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Fidelity Salem Street Trust – ‘N-CSR’ for 2/29/24

On:  Monday, 4/22/24, at 10:13am ET   ·   Effective:  4/22/24   ·   For:  2/29/24   ·   Accession #:  35315-24-348   ·   File #:  811-02105

Previous ‘N-CSR’:  ‘N-CSR’ on 3/21/24 for 1/31/24   ·   Latest ‘N-CSR’:  This Filing

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  As Of               Filer                 Filing    For·On·As Docs:Size

 4/22/24  Fidelity Salem Street Trust       N-CSR       2/29/24    4:4.6M
          → Fidelity Intermediate Treasury Bond Index Fund FUAMXFidelity Long-Term Treasury Bond Index Fund FNBGXFidelity SAI Long-Term Treasury Bond Index Fund FBLTXFidelity SAI U.S. Treasury Bond Index Fund FUTBXFidelity Series Long-Term Treasury Bond Index Fund FTLTXFidelity Short-Term Treasury Bond Index Fund FUMBX

Annual Certified Shareholder Report by an Investment Company   —   Form N-CSR   —   ICA’40

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: N-CSR       Annual Certified Shareholder Report by an           HTML   2.85M 
                Investment Company                                               
 3: EX-99.906 CERT  Certification -- §906 - SOA'02 -- ex99906cert   HTML      7K 
 2: EX-99.CERT  Certification -- §302 - SOA'02 -- ex99cert          HTML     17K 
 4: EX-99.CODE ETH  Code of Ethics -- code                          HTML     21K 


‘N-CSR’   —   Annual Certified Shareholder Report by an Investment Company

Document Table of Contents

Page (sequential)   (alphabetic) Top
 
11st Page  –  Filing Submission
"Performance
"Management's Discussion of Fund Performance
"Fidelity(R) Short-Term Treasury Bond Index Fund
"Investment Summary
"Schedule of Investments
"Financial Statements
"Fidelity(R) Intermediate Treasury Bond Index Fund
"Fidelity(R) Long-Term Treasury Bond Index Fund
"Notes to Financial Statements
"Report of Independent Registered Public Accounting Firm
"Trustees and Officers
"Shareholder Expense Example
"Distributions
"Board Approval of Investment Advisory Contracts
"Liquidity Risk Management Program
"Proxy Voting Results

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES



Investment Company Act file number   811-02105



Fidelity Salem Street Trust

 (Exact name of registrant as specified in charter)



245 Summer St., Boston, Massachusetts 02210

 (Address of principal executive offices)       (Zip code)



Margaret Carey, Secretary

245 Summer St.

Boston, Massachusetts  02210

(Name and address of agent for service)





Registrant's telephone number, including area code:

617-563-7000





Date of fiscal year end:

February 29





Date of reporting period:

February 29, 2024







Item 1.

Reports to Stockholders







Fidelity® Short-Term Treasury Bond Index Fund
Fidelity® Intermediate Treasury Bond Index Fund
Fidelity® Long-Term Treasury Bond Index Fund
 
 
Annual Report
February 29, 2024

Contents

Performance

Management's Discussion of Fund Performance

Fidelity® Short-Term Treasury Bond Index Fund

Investment Summary

Schedule of Investments

Financial Statements

Fidelity® Intermediate Treasury Bond Index Fund

Investment Summary

Schedule of Investments

Financial Statements

Fidelity® Long-Term Treasury Bond Index Fund

Investment Summary

Schedule of Investments

Financial Statements

Notes to Financial Statements

Report of Independent Registered Public Accounting Firm

Trustees and Officers

Shareholder Expense Example

Distributions

Board Approval of Investment Advisory Contracts

Liquidity Risk Management Program

Proxy Voting Results

To view a fund's proxy voting guidelines and proxy voting record for the 12-month period ended June 30, visit http://www.fidelity.com/proxyvotingresults or visit the Securities and Exchange Commission's (SEC) web site at http://www.sec.gov.
 
 
You may also call 1-800-544-8544 to request a free copy of the proxy voting guidelines.
BLOOMBERG ® is a trademark and service mark of Bloomberg Finance L.P. and its affiliates (collectively "Bloomberg"). Bloomberg or Bloomberg's licensors own all proprietary rights in the Bloomberg Indices. Neither Bloomberg nor Bloomberg's licensors approves or endorses this material, or guarantees the accuracy or completeness of any information herein, or makes any warranty, express or implied, as to the results to be obtained therefrom and, to the maximum extent allowed by law, neither shall have any liability or responsibility for injury or damages arising in connection therewith.
Standard & Poor's, S&P and S&P 500 are registered service marks of The McGraw-Hill Companies, Inc. and have been licensed for use by Fidelity Distributors Corporation.
Other third-party marks appearing herein are the property of their respective owners.
All other marks appearing herein are registered or unregistered trademarks or service marks of FMR LLC or an affiliated company. © 2024 FMR LLC. All rights reserved.
 
This report and the financial statements contained herein are submitted for the general information of the shareholders of the Funds. This report is not authorized for distribution to prospective investors in the Funds unless preceded or accompanied by an effective prospectus.
A fund files its complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. Forms N-PORT are available on the SEC's web site at http://www.sec.gov. A fund's Forms N-PORT may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information regarding the operation of the SEC's Public Reference Room may be obtained by calling 1-800-SEC-0330.
For a complete list of a fund's portfolio holdings, view the most recent holdings listing, semiannual report, or annual report on Fidelity's web site at http://www.fidelity.com, http://www.institutional.fidelity.com, or http://www.401k.com, as applicable.
NOT FDIC INSURED •MAY LOSE VALUE •NO BANK GUARANTEE
Neither the Funds nor Fidelity Distributors Corporation is a bank.
 
Fidelity® Short-Term Treasury Bond Index Fund
Performance: The Bottom Line
Average annual total return reflects the change in the value of an investment, assuming reinvestment of distributions from dividend income and capital gains (the profits earned upon the sale of securities that have grown in value, if any) and assuming a constant rate of performance each year. The hypothetical investment and the average annual total returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. During periods of reimbursement by Fidelity, a fund's total return will be greater than it would be had the reimbursement not occurred. How a fund did yesterday is no guarantee of how it will do tomorrow.
Average Annual Total Returns
 
 
 
 
Periods ended February 29, 2024
 
Past 1
year
Past 5
years
Past 10
years
Fidelity® Short-Term Treasury Bond Index Fund
4.03%
0.99%
0.96%
 
 
The initial offering of Fidelity Short-Term Treasury Bond Index Fund (formerly named Institutional Premium Class) took place on October 4, 2017. Returns prior to October 4, 2017, are those of the former Premium Class and have not been restated to reflect current expenses.
 $10,000 Over 10 Years
 
Let's say hypothetically that $10,000 was invested in Fidelity® Short-Term Treasury Bond Index Fund on February 28, 2014.
 
The chart shows how the value of your investment would have changed, and also shows how the Bloomberg U.S. 1-5 Year Treasury Bond Index performed over the same period.
 
 
Fidelity® Intermediate Treasury Bond Index Fund
Performance: The Bottom Line
Average annual total return reflects the change in the value of an investment, assuming reinvestment of distributions from dividend income and capital gains (the profits earned upon the sale of securities that have grown in value, if any) and assuming a constant rate of performance each year. The hypothetical investment and the average annual total returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. During periods of reimbursement by Fidelity, a fund's total return will be greater than it would be had the reimbursement not occurred. How a fund did yesterday is no guarantee of how it will do tomorrow.
Average Annual Total Returns
 
 
 
 
Periods ended February 29, 2024
 
Past 1
year
Past 5
years
Past 10
years
Fidelity® Intermediate Treasury Bond Index Fund
2.39%
0.24%
1.12%
 
 
The initial offering of Fidelity Intermediate Treasury Bond Index Fund (formerly named Institutional Premium Class) took place on October 4, 2017. Returns prior to October 4, 2017, are those of the former Premium Class and have not been restated to reflect current expenses.
 $10,000 Over 10 Years
 
Let's say hypothetically that $10,000 was invested in Fidelity® Intermediate Treasury Bond Index Fund on February 28, 2014.
 
The chart shows how the value of your investment would have changed, and also shows how the Bloomberg U.S. 5-10 Year Treasury Bond Index performed over the same period.
 
 
Fidelity® Long-Term Treasury Bond Index Fund
Performance: The Bottom Line
Average annual total return reflects the change in the value of an investment, assuming reinvestment of distributions from dividend income and capital gains (the profits earned upon the sale of securities that have grown in value, if any) and assuming a constant rate of performance each year. The hypothetical investment and the average annual total returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. During periods of reimbursement by Fidelity, a fund's total return will be greater than it would be had the reimbursement not occurred. How a fund did yesterday is no guarantee of how it will do tomorrow.
Average Annual Total Returns
 
 
 
 
Periods ended February 29, 2024
 
Past 1
year
Past 5
years
Past 10
years
Fidelity® Long-Term Treasury Bond Index Fund
-2.96%
-2.07%
1.10%
 
 
The initial offering of Fidelity Long-Term Treasury Bond Index Fund (formerly named Institutional Premium Class) took place on October 4, 2017. Returns prior to October 4, 2017, are those of the former Premium Class and have not been restated to reflect current expenses.
 $10,000 Over 10 Years
 
Let's say hypothetically that $10,000 was invested in Fidelity® Long-Term Treasury Bond Index Fund on February 28, 2014.
 
The chart shows how the value of your investment would have changed, and also shows how the Bloomberg U.S. Long Treasury Bond Index performed over the same period.
 
Management's Discussion of Fund Performance
Market Recap:
U.S. taxable investment-grade bonds gained 3.33% for the 12 months ending February 29, 2024, as measured by the Bloomberg U.S. Aggregate Bond Index. The advance was driven by a powerful rally in the final two months of 2023, but the 12-month period was marked by high levels of volatility. The early months saw the bond market start to rebound from the historic downturn that began in early 2022, when the U.S. Federal Reserve began an aggressive series of interest rate hikes to combat persistent inflation. The index advanced in March and April of 2023 on optimism the central bank would soon be done with its hiking cycle, only to fall back in each of the next six months, as cooling but still-high inflation and a strong labor market suggested it may need to keep raising rates. Bonds saw particularly sharp sell-offs in September (-2.54%) and October (-1.58%). At its committee meeting in November, though, the Fed struck a new, more optimistic tone, and then in December signaled to the market that, if disinflation trends hold, it expected to begin cutting interest rates in 2024. The index gained 4.53% in November, its best month since the 1980s, and a further 3.83% in December but fell in January (-0.27%) and February (-1.41%) as disinflation stalled. For the full 12 months, short-term bonds outperformed long-term issues, while lower-quality bonds bettered higher-quality debt, and risk assets, including corporate bonds and asset-backed securities, notably outpaced U.S. Treasurys.
Comments from Co-Portfolio Managers Brandon Bettencourt and Richard Munclinger:
For the fiscal year, the Fidelity Treasury Bond Index Short-Term Fund, Intermediate Fund and Long-Term Fund posted results that were nearly in line, net of fees, with the returns of their respective benchmarks (For specific portfolio results, please refer to the Performance sections of this report). These results met our goal of producing monthly returns, before expenses, that closely match the benchmark return. We construct the portfolios using optimization. This approach minimizes the differences between risk exposures of the funds relative to the index. Exposures include duration, key rate durations, and other factors. Treasurys were under pressure throughout much of the past 12 months, particularly summer and early fall 2023, as well as early 2024, amid heightened concern the Fed would hold rates higher and for significantly longer than expected. For the 12 months overall, Treasurys with short durations (less interest rate sensitivity) posted the biggest gains this period, while long-duration Treasurys declined.
 
 
 
The views expressed above reflect those of the portfolio manager(s) only through the end of the period as stated on the cover of this report and do not necessarily represent the views of Fidelity or any other person in the Fidelity organization. Any such views are subject to change at any time based upon market or other conditions and Fidelity disclaims any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Fidelity fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any Fidelity fund.
 
Fidelity® Short-Term Treasury Bond Index Fund 
Investment Summary February 29, 2024 (Unaudited)
Coupon Distribution (% of Fund's Investments)
 
0.01 - 0.99%
43.0
 
1 - 1.99%
18.8
 
2 - 2.99%
10.2
 
3 - 3.99%
8.3
 
4 - 4.99%
15.5
 
5 - 5.99%
0.3
 
6 - 6.99%
2.2
 
 
Coupon distribution shows the range of stated interest rates on the fund's investments, excluding short-term investments.
 
 
Asset Allocation (% of Fund's net assets)
 
Fidelity® Short-Term Treasury Bond Index Fund
Schedule of Investments February 29, 2024
Showing Percentage of Net Assets     
U.S. Government and Government Agency Obligations - 99.3%
 
 
Principal
Amount (a)
 
Value ($)
 
U.S. Treasury Obligations - 99.3%
 
 
 
U.S. Treasury Bonds:
 
 
 
 5.5% 8/15/28
 
11,500,000
12,059,277
 6% 2/15/26
 
56,000,000
57,465,625
 6.375% 8/15/27
 
13,450,000
14,304,285
 6.5% 11/15/26
 
4,300,000
4,523,566
U.S. Treasury Notes:
 
 
 
 0.25% 5/15/24
 
4,000
3,958
 0.25% 5/31/25
 
70,999,000
67,019,173
 0.25% 6/30/25
 
167,297,000
157,429,087
 0.25% 7/31/25
 
66,709,000
62,555,323
 0.25% 8/31/25
 
1,777,000
1,661,009
 0.25% 9/30/25
 
73,948,000
68,892,961
 0.25% 10/31/25
 
65,108,000
60,453,795
 0.375% 4/30/25
 
48,530,000
46,044,733
 0.375% 11/30/25
 
74,272,000
68,904,688
 0.375% 12/31/25 (b)
 
44,806,000
41,452,551
 0.375% 1/31/26
 
53,641,000
49,462,869
 0.375% 7/31/27
 
69,145,000
60,431,650
 0.375% 9/30/27
 
49,700,000
43,194,348
 0.5% 3/31/25
 
64,156,000
61,143,676
 0.5% 2/28/26
 
108,901,000
100,401,617
 0.5% 5/31/27
 
38,450,000
33,956,156
 0.5% 6/30/27
 
42,550,000
37,475,580
 0.5% 8/31/27
 
4,638,000
4,061,149
 0.5% 10/31/27
 
38,100,000
33,167,836
 0.625% 7/31/26
 
114,762,000
104,630,667
 0.625% 3/31/27
 
42,900,000
38,284,899
 0.625% 11/30/27
 
17,100,000
14,921,086
 0.625% 12/31/27
 
72,400,000
62,976,688
 0.75% 3/31/26
 
37,599,000
34,764,388
 0.75% 4/30/26
 
111,232,000
102,546,345
 0.75% 5/31/26
 
28,334,000
26,047,358
 0.75% 8/31/26
 
32,555,000
29,696,264
 0.75% 1/31/28
 
70,000,000
61,042,188
 0.875% 6/30/26
 
11,468,000
10,551,904
 0.875% 9/30/26
 
25,000,000
22,832,031
 1% 7/31/28
 
57,300,000
49,761,469
 1.125% 10/31/26
 
52,000,000
47,659,219
 1.125% 2/29/28
 
6,900,000
6,095,449
 1.25% 11/30/26
 
33,550,000
30,789,988
 1.25% 12/31/26
 
86,000,000
78,794,141
 1.25% 3/31/28
 
6,800,000
6,025,172
 1.25% 4/30/28
 
43,450,000
38,407,424
 1.25% 5/31/28
 
94,500,000
83,363,028
 1.25% 6/30/28
 
5,100,000
4,488,797
 1.25% 9/30/28
 
69,650,000
60,908,381
 1.5% 1/31/27
 
43,913,000
40,423,975
 1.625% 2/15/26
 
18,261,000
17,240,239
 1.625% 5/15/26
 
31,645,000
29,701,799
 1.625% 10/31/26
 
57,250,000
53,188,828
 1.875% 7/31/26
 
8,900,000
8,366,695
 1.875% 2/28/27
 
23,400,000
21,740,063
 1.875% 2/28/29
 
89,550,000
79,968,849
 2% 5/31/24
 
28,000
27,769
 2% 8/15/25
 
22,242,000
21,367,959
 2.125% 9/30/24
 
17,000
16,697
 2.125% 5/15/25
 
12,159,000
11,764,307
 2.125% 5/31/26
 
12,650,000
11,996,746
 2.25% 4/30/24
 
29,000
28,853
 2.25% 11/15/25
 
34,438,000
33,047,028
 2.25% 2/15/27
 
8,100,000
7,615,898
 2.25% 8/15/27
 
14,900,000
13,894,250
 2.25% 11/15/27
 
24,300,000
22,567,676
 2.5% 5/15/24
 
24,000
23,858
 2.5% 3/31/27
 
35,100,000
33,188,695
 2.625% 3/31/25
 
30,200,000
29,449,719
 2.625% 4/15/25
 
6,750,000
6,577,031
 2.625% 12/31/25
 
1,150,000
1,108,807
 2.625% 1/31/26
 
21,100,000
20,324,410
 2.625% 5/31/27
 
47,250,000
44,725,078
 2.75% 6/30/25
 
34,100,000
33,184,894
 2.75% 4/30/27
 
15,400,000
14,653,461
 2.75% 7/31/27
 
14,000,000
13,280,313
 2.75% 2/15/28
 
11,700,000
11,030,906
 2.875% 11/30/25
 
29,550,000
28,643,877
 3% 7/15/25
 
7,450,000
7,267,533
 3.125% 8/15/25
 
30,400,000
29,681,563
 3.125% 8/31/27
 
6,444,000
6,183,471
 3.25% 6/30/27
 
9,050,000
8,735,018
 3.5% 1/31/28
 
59,350,000
57,567,182
 3.5% 4/30/28
 
1,600,000
1,550,375
 3.75% 4/15/26
 
11,500,000
11,304,590
 3.75% 12/31/28
 
117,000,000
114,340,078
 3.875% 11/30/27
 
56,350,000
55,414,502
 4% 12/15/25
 
26,650,000
26,324,162
 4% 2/29/28
 
7,500,000
7,407,715
 4.125% 6/15/26
 
4,050,000
4,012,348
 4.125% 9/30/27
 
20,050,000
19,887,877
 4.125% 10/31/27
 
24,500,000
24,299,024
 4.375% 12/15/26
 
16,850,000
16,815,773
 4.375% 8/31/28
 
120,850,000
121,237,097
 4.375% 11/30/28
 
105,850,000
106,296,555
 4.625% 6/30/25
 
58,150,000
57,966,010
 4.625% 9/15/26
 
63,550,000
63,726,252
 4.625% 10/15/26
 
27,900,000
27,991,547
 4.625% 11/15/26
 
1,950,000
1,957,313
 4.875% 10/31/28
 
64,400,000
65,974,781
 
 
 
 
 
TOTAL U.S. GOVERNMENT AND GOVERNMENT AGENCY OBLIGATIONS
 (Cost $3,525,649,805)
 
 
 
3,445,741,244
 
 
 
 
Money Market Funds - 1.6%
 
 
Shares
Value ($)
 
Fidelity Cash Central Fund 5.39% (c)
 
21,928,306
21,932,692
Fidelity Securities Lending Cash Central Fund 5.39% (c)(d)
 
33,869,193
33,872,580
 
TOTAL MONEY MARKET FUNDS
 (Cost $55,805,272)
 
 
55,805,272
 
 
 
 
 
TOTAL INVESTMENT IN SECURITIES - 100.9%
 (Cost $3,581,455,077)
 
 
 
3,501,546,516
NET OTHER ASSETS (LIABILITIES) - (0.9)%  
(30,601,463)
NET ASSETS - 100.0%
3,470,945,053
 
 
 
Legend
 
(a)
Amount is stated in United States dollars unless otherwise noted.
 
(b)
Security or a portion of the security is on loan at period end.
 
(c)
Affiliated fund that is generally available only to investment companies and other accounts managed by Fidelity Investments. The rate quoted is the annualized seven-day yield of the fund at period end. A complete unaudited listing of the fund's holdings as of its most recent quarter end is available upon request. In addition, each Fidelity Central Fund's financial statements, which are not covered by the Fund's Report of Independent Registered Public Accounting Firm, are available on the SEC's website or upon request.
 
(d)
Investment made with cash collateral received from securities on loan.
 
 
 
Affiliated Central Funds
 
Fiscal year to date information regarding the Fund's investments in Fidelity Central Funds, including the ownership percentage, is presented below.
 
 
Affiliate
Value,
beginning
of period ($)
Purchases ($)
Sales
Proceeds ($)
Dividend
Income ($)
Realized
Gain (loss) ($)
Change in
Unrealized
appreciation
(depreciation) ($)
Value,
end
of period ($)
% ownership,
end
of period
Fidelity Cash Central Fund 5.39%
10,146,929
549,485,169
537,699,406
536,424
-
-
21,932,692
0.0%
Fidelity Securities Lending Cash Central Fund 5.39%
201,134,716
613,875,681
781,137,817
29,090
-
-
33,872,580
0.1%
Total
211,281,645
1,163,360,850
1,318,837,223
565,514
-
-
55,805,272
 
 
 
 
 
 
 
 
 
 
Amounts in the dividend income column in the above table include any capital gain distributions from underlying funds, which are presented in the corresponding line item in the Statement of Operations, if applicable.
 
Amounts in the dividend income column for Fidelity Securities Lending Cash Central Fund represents the income earned on investing cash collateral, less rebates paid to borrowers and any lending agent fees associated with the loan, plus any premium payments received for lending certain types of securities.
 
Amounts included in the purchases and sales proceeds columns may include in-kind transactions, if applicable.
 
Investment Valuation
 
The following is a summary of the inputs used, as of February 29, 2024, involving the Fund's assets and liabilities carried at fair value. The inputs or methodology used for valuing securities may not be an indication of the risk associated with investing in those securities. For more information on valuation inputs, and their aggregation into the levels used below, please refer to the Investment Valuation section in the accompanying Notes to Financial Statements.
 
Valuation Inputs at Reporting Date:
Description
Total ($)
Level 1 ($)
Level 2 ($)
Level 3 ($)
 Investments in Securities:
 
 
 
 
 U.S. Government and Government Agency Obligations
3,445,741,244
-
3,445,741,244
-
  Money Market Funds
55,805,272
55,805,272
-
-
 Total Investments in Securities:
3,501,546,516
55,805,272
3,445,741,244
-
Fidelity® Short-Term Treasury Bond Index Fund
Financial Statements
Statement of Assets and Liabilities
 
 
 
 
 
 
 
 
Assets
 
 
 
 
Investment in securities, at value  (including  securities loaned of $33,161,435) - See accompanying schedule:
 
 
 
 
Unaffiliated issuers (cost $3,525,649,805)
$
3,445,741,244
 
 
Fidelity Central Funds (cost $55,805,272)
55,805,272
 
 
 
 
 
 
 
 
 
 
 
 
Total Investment in Securities (cost $3,581,455,077)
 
 
$
3,501,546,516
Receivable for investments sold
 
 
114,600,127
Receivable for fund shares sold
 
 
3,111,577
Interest receivable
 
 
13,453,762
Distributions receivable from Fidelity Central Funds
 
 
49,512
  Total assets
 
 
3,632,761,494
Liabilities
 
 
 
 
Payable for investments purchased
$
124,790,676
 
 
Payable for fund shares redeemed
1,847,297
 
 
Distributions payable
1,219,183
 
 
Accrued management fee
86,705
 
 
Collateral on securities loaned
33,872,580
 
 
  Total Liabilities
 
 
 
161,816,441
Net Assets  
 
 
$
3,470,945,053
Net Assets consist of:
 
 
 
 
Paid in capital
 
 
$
3,657,546,306
Total accumulated earnings (loss)
 
 
 
(186,601,253)
Net Assets
 
 
$
3,470,945,053
Net Asset Value, offering price and redemption price per share ($3,470,945,053 ÷ 345,609,207 shares)
 
 
$
10.04
Statement of Operations
 
 
 
Year ended
Investment Income
 
 
 
 
Interest  
 
 
$
116,080,302
Income from Fidelity Central Funds (including $29,090 from security lending)
 
 
565,514
 Total Income
 
 
 
116,645,816
Expenses
 
 
 
 
Management fee
$
1,150,164
 
 
Independent trustees' fees and expenses
12,994
 
 
 Total expenses before reductions
 
1,163,158
 
 
 Expense reductions
 
(125)
 
 
 Total expenses after reductions
 
 
 
1,163,033
Net Investment income (loss)
 
 
 
115,482,783
Realized and Unrealized Gain (Loss)
 
 
 
 
Net realized gain (loss) on:
 
 
 
 
 Investment Securities:
 
 
 
 
   Unaffiliated issuers  
 
(85,090,999)
 
 
Total net realized gain (loss)
 
 
 
(85,090,999)
Change in net unrealized appreciation (depreciation) on investment securities
 
 
 
133,588,040
Net gain (loss)
 
 
 
48,497,041
Net increase (decrease) in net assets resulting from operations
 
 
$
163,979,824
Statement of Changes in Net Assets
 
 
Year ended
 
Year ended
Increase (Decrease) in Net Assets
 
 
 
 
Operations
 
 
 
Net investment income (loss)
$
115,482,783
$
61,541,099
Net realized gain (loss)
 
(85,090,999)
 
 
(89,024,350)
 
Change in net unrealized appreciation (depreciation)
 
133,588,040
 
(132,404,510)
 
Net increase (decrease) in net assets resulting from operations
 
163,979,824
 
 
(159,887,761)
 
Distributions to shareholders
 
(66,054,224)
 
 
(45,142,094)
 
 
 
 
 
 
Share transactions
 
 
 
 
Proceeds from sales of shares
 
2,018,014,533
 
3,110,410,601
  Reinvestment of distributions
 
52,204,755
 
 
35,908,118
 
Cost of shares redeemed
 
(2,958,447,612)
 
(2,591,370,911)
 
 
 
 
 
  Net increase (decrease) in net assets resulting from share transactions
 
(888,228,324)
 
 
554,947,808
 
Total increase (decrease) in net assets
 
(790,302,724)
 
 
349,917,953
 
 
 
 
 
 
Net Assets
 
 
 
 
Beginning of period
 
4,261,247,777
 
3,911,329,824
 
End of period
$
3,470,945,053
$
4,261,247,777
 
 
 
 
 
Other Information
 
 
 
 
Shares
 
 
 
 
Sold
 
202,462,371
 
313,032,641
  Issued in reinvestment of distributions
 
5,229,439
 
 
3,615,322
 
Redeemed
 
(295,927,816)
 
(259,451,335)
Net increase (decrease)
 
(88,236,006)
 
57,196,628
 
 
 
 
 
 
Financial Highlights
Fidelity® Short-Term Treasury Bond Index Fund
 
Years ended February 28,
 
2024 A 
 
2023 
 
2022  
 
2021 
 
2020 A
  Selected Per-Share Data 
 
 
 
 
 
 
 
 
 
 
  Net asset value, beginning of period
$
9.82
$
10.38
$
10.76
$
10.72
$
10.30
  Income from Investment Operations
 
 
 
 
 
 
 
 
 
 
     Net investment income (loss) B,C
 
.300
 
.164
 
.087
 
.127
 
.217
     Net realized and unrealized gain (loss)
 
.094
 
(.606)
 
(.333)
 
.068
 
.402
  Total from investment operations
 
.394  
 
(.442)  
 
(.246)  
 
.195  
 
.619
  Distributions from net investment income
 
(.174)
 
(.118)
 
(.086)
 
(.125)
 
(.199)
  Distributions from net realized gain
 
-
 
-
 
(.048)
 
(.030)
 
-
     Total distributions
 
(.174)
 
(.118)
 
(.134)
 
(.155)
 
(.199)
  Net asset value, end of period
$
10.04
$
9.82
$
10.38
$
10.76
$
10.72
 Total Return D
 
4.03%
 
(4.26)%
 
(2.31)%
 
1.82%
 
6.06%
 Ratios to Average Net Assets C,E,F
 
 
 
 
 
 
 
 
 
 
    Expenses before reductions
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Expenses net of fee waivers, if any
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Expenses net of all reductions
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Net investment income (loss)
 
3.01%
 
1.65%
 
.82%
 
1.17%
 
2.07%
 Supplemental Data
 
 
 
 
 
 
 
 
 
 
    Net assets, end of period (000 omitted)
$
3,470,945
$
4,261,248
$
3,911,330
$
3,870,957
$
2,570,535
    Portfolio turnover rate G
 
69%
 
60%
 
48%
 
54%
 
46%
 
AFor the year ended February 29.
 
BCalculated based on average shares outstanding during the period.
 
CNet investment income (loss) is affected by the timing of the declaration of dividends by any underlying mutual funds or exchange-traded funds (ETFs). Net investment income (loss) of any mutual funds or ETFs is not included in the Fund's net investment income (loss) ratio.
 
DTotal returns would have been lower if certain expenses had not been reduced during the applicable periods shown.
 
EFees and expenses of any underlying mutual funds or exchange-traded funds (ETFs) are not included in the Fund's expense ratio. The Fund indirectly bears its proportionate share of these expenses. For additional expense information related to investments in Fidelity Central Funds, please refer to the "Investments in Fidelity Central Funds" note found in the Notes to Financial Statements section of the most recent Annual or Semi-Annual report.
 
FExpense ratios reflect operating expenses of the class. Expenses before reductions do not reflect amounts reimbursed, waived, or reduced through arrangements with the investment adviser, brokerage services, or other offset arrangements, if applicable, and do not represent the amount paid by the class during periods when reimbursements, waivers or reductions occur.
 
GAmount does not include the portfolio activity of any underlying mutual funds or exchange-traded funds (ETFs).
 
 
Fidelity® Intermediate Treasury Bond Index Fund 
Investment Summary February 29, 2024 (Unaudited)
Coupon Distribution (% of Fund's Investments)
 
0.01 - 0.99%
13.6
 
1 - 1.99%
25.2
 
2 - 2.99%
11.4
 
3 - 3.99%
18.3
 
4 - 4.99%
22.1
 
5 - 5.99%
3.3
 
6 - 6.99%
5.2
 
 
Coupon distribution shows the range of stated interest rates on the fund's investments, excluding short-term investments.
 
 
Asset Allocation (% of Fund's net assets)
 
Fidelity® Intermediate Treasury Bond Index Fund
Schedule of Investments February 29, 2024
Showing Percentage of Net Assets     
U.S. Government and Government Agency Obligations - 99.4%
 
 
Principal
Amount (a)
 
Value ($)
 
U.S. Treasury Obligations - 99.4%
 
 
 
U.S. Treasury Bonds:
 
 
 
 5.25% 2/15/29
 
192,494,000
201,065,998
 5.375% 2/15/31
 
63,650,000
68,145,281
 5.5% 8/15/28
 
41,000
42,994
 6.125% 8/15/29
 
263,150,000
285,898,083
 6.25% 5/15/30
 
124,504,000
137,752,004
 6.375% 8/15/27
 
3,000
3,191
 6.625% 2/15/27
 
315,000
334,712
U.S. Treasury Notes:
 
 
 
 0.375% 7/31/27
 
17,000
14,858
 0.375% 9/30/27
 
28,000
24,335
 0.5% 4/30/27
 
48,000
42,527
 0.5% 6/30/27
 
26,000
22,899
 0.5% 10/31/27
 
38,000
33,081
 0.625% 11/30/27
 
115,000
100,346
 0.625% 12/31/27
 
2,000
1,740
 0.625% 5/15/30
 
319,155,000
256,209,157
 0.625% 8/15/30
 
491,822,000
391,536,420
 0.875% 11/15/30
 
577,791,000
465,054,044
 1% 7/31/28
 
43,000
37,343
 1.125% 2/15/31
 
212,188,000
173,024,395
 1.25% 3/31/28
 
77,000
68,226
 1.25% 5/31/28
 
34,000
29,993
 1.25% 8/15/31
 
465,608,000
376,887,848
 1.375% 11/15/31
 
357,485,000
290,163,314
 1.5% 2/15/30
 
317,987,000
272,027,941
 1.625% 8/15/29
 
307,376,000
268,881,957
 1.625% 5/15/31
 
240,066,000
201,158,429
 1.75% 11/15/29
 
253,086,000
221,993,990
 1.875% 2/15/32
 
306,022,000
256,915,047
 2.375% 5/15/29
 
193,998,000
176,954,973
 2.625% 7/31/29
 
82,150,000
75,658,224
 2.75% 5/31/29
 
64,500,000
59,916,973
 2.75% 8/15/32
 
279,400,000
249,440,899
 2.875% 5/15/28
 
20,000
18,898
 2.875% 5/15/32
 
412,100,000
372,467,568
 3.125% 8/31/29
 
62,800,000
59,267,500
 3.25% 6/30/29
 
134,250,000
127,705,313
 3.375% 5/15/33
 
389,600,000
363,454,186
 3.5% 4/30/30
 
61,000,000
58,436,094
 3.5% 2/15/33
 
375,350,000
354,075,278
 3.625% 3/31/30
 
120,200,000
115,993,000
 3.875% 9/30/29
 
46,800,000
45,860,344
 3.875% 11/30/29
 
79,350,000
77,722,705
 3.875% 12/31/29
 
26,700,000
26,146,184
 3.875% 8/15/33
 
273,250,000
265,095,195
 4% 10/31/29
 
50,800,000
50,075,703
 4% 2/28/30
 
32,650,000
32,158,975
 4% 7/31/30
 
250,400,000
246,448,375
 4% 1/31/31
 
225,850,000
222,179,938
 4% 2/15/34
 
155,050,000
152,021,680
 4.125% 8/31/30
 
36,000,000
35,675,156
 4.125% 11/15/32
 
226,850,000
224,448,580
 4.25% 2/28/31
 
181,200,000
180,973,500
 4.375% 11/30/30
 
113,600,000
114,203,500
 4.5% 11/15/33
 
386,800,000
394,112,938
 4.875% 10/31/30
 
148,700,000
153,718,625
 
 
 
 
 
TOTAL U.S. GOVERNMENT AND GOVERNMENT AGENCY OBLIGATIONS
 (Cost $8,447,679,227)
 
 
 
8,101,700,457
 
 
 
 
Money Market Funds - 0.8%
 
 
Shares
Value ($)
 
Fidelity Cash Central Fund 5.39% (b)
 
 (Cost $66,409,718)
 
 
66,396,439
66,409,718
 
 
 
 
 
TOTAL INVESTMENT IN SECURITIES - 100.2%
 (Cost $8,514,088,945)
 
 
 
8,168,110,175
NET OTHER ASSETS (LIABILITIES) - (0.2)%  
(20,193,033)
NET ASSETS - 100.0%
8,147,917,142
 
 
 
Legend
 
(a)
Amount is stated in United States dollars unless otherwise noted.
 
(b)
Affiliated fund that is generally available only to investment companies and other accounts managed by Fidelity Investments. The rate quoted is the annualized seven-day yield of the fund at period end. A complete unaudited listing of the fund's holdings as of its most recent quarter end is available upon request. In addition, each Fidelity Central Fund's financial statements, which are not covered by the Fund's Report of Independent Registered Public Accounting Firm, are available on the SEC's website or upon request.
 
 
 
Affiliated Central Funds
 
Fiscal year to date information regarding the Fund's investments in Fidelity Central Funds, including the ownership percentage, is presented below.
 
 
Affiliate
Value,
beginning
of period ($)
Purchases ($)
Sales
Proceeds ($)
Dividend
Income ($)
Realized
Gain (loss) ($)
Change in
Unrealized
appreciation
(depreciation) ($)
Value,
end
of period ($)
% ownership,
end
of period
Fidelity Cash Central Fund 5.39%
24,956,860
996,379,568
954,926,710
1,435,861
-
-
66,409,718
0.1%
Fidelity Securities Lending Cash Central Fund 5.39%
-
1,290,151,372
1,290,151,372
52,001
-
-
-
0.0%
Total
24,956,860
2,286,530,940
2,245,078,082
1,487,862
-
-
66,409,718
 
 
 
 
 
 
 
 
 
 
Amounts in the dividend income column in the above table include any capital gain distributions from underlying funds, which are presented in the corresponding line item in the Statement of Operations, if applicable.
 
Amounts in the dividend income column for Fidelity Securities Lending Cash Central Fund represents the income earned on investing cash collateral, less rebates paid to borrowers and any lending agent fees associated with the loan, plus any premium payments received for lending certain types of securities.
 
Amounts included in the purchases and sales proceeds columns may include in-kind transactions, if applicable.
 
Investment Valuation
 
The following is a summary of the inputs used, as of February 29, 2024, involving the Fund's assets and liabilities carried at fair value. The inputs or methodology used for valuing securities may not be an indication of the risk associated with investing in those securities. For more information on valuation inputs, and their aggregation into the levels used below, please refer to the Investment Valuation section in the accompanying Notes to Financial Statements.
 
Valuation Inputs at Reporting Date:
Description
Total ($)
Level 1 ($)
Level 2 ($)
Level 3 ($)
 Investments in Securities:
 
 
 
 
 U.S. Government and Government Agency Obligations
8,101,700,457
-
8,101,700,457
-
  Money Market Funds
66,409,718
66,409,718
-
-
 Total Investments in Securities:
8,168,110,175
66,409,718
8,101,700,457
-
Fidelity® Intermediate Treasury Bond Index Fund
Financial Statements
Statement of Assets and Liabilities
 
 
 
 
 
 
 
 
Assets
 
 
 
 
Investment in securities, at value  - See accompanying schedule:
 
 
 
 
Unaffiliated issuers (cost $8,447,679,227)
$
8,101,700,457
 
 
Fidelity Central Funds (cost $66,409,718)
66,409,718
 
 
 
 
 
 
 
 
 
 
 
 
Total Investment in Securities (cost $8,514,088,945)
 
 
$
8,168,110,175
Receivable for investments sold
 
 
337,290,705
Receivable for fund shares sold
 
 
4,518,875
Interest receivable
 
 
41,628,129
Distributions receivable from Fidelity Central Funds
 
 
172,467
  Total assets
 
 
8,551,720,351
Liabilities
 
 
 
 
Payable for investments purchased
$
396,660,754
 
 
Payable for fund shares redeemed
4,731,479
 
 
Distributions payable
2,207,145
 
 
Accrued management fee
203,831
 
 
  Total Liabilities
 
 
 
403,803,209
Net Assets  
 
 
$
8,147,917,142
Net Assets consist of:
 
 
 
 
Paid in capital
 
 
$
8,879,970,199
Total accumulated earnings (loss)
 
 
 
(732,053,057)
Net Assets
 
 
$
8,147,917,142
Net Asset Value, offering price and redemption price per share ($8,147,917,142 ÷ 853,464,599 shares)
 
 
$
9.55
Statement of Operations
 
 
 
Year ended
Investment Income
 
 
 
 
Interest  
 
 
$
237,769,591
Income from Fidelity Central Funds (including $52,001 from security lending)
 
 
1,487,862
 Total Income
 
 
 
239,257,453
Expenses
 
 
 
 
Management fee
$
2,158,232
 
 
Independent trustees' fees and expenses
22,301
 
 
 Total expenses before reductions
 
2,180,533
 
 
 Expense reductions
 
(23)
 
 
 Total expenses after reductions
 
 
 
2,180,510
Net Investment income (loss)
 
 
 
237,076,943
Realized and Unrealized Gain (Loss)
 
 
 
 
Net realized gain (loss) on:
 
 
 
 
 Investment Securities:
 
 
 
 
   Unaffiliated issuers  
 
(256,157,570)
 
 
Total net realized gain (loss)
 
 
 
(256,157,570)
Change in net unrealized appreciation (depreciation) on investment securities
 
 
 
162,127,103
Net gain (loss)
 
 
 
(94,030,467)
Net increase (decrease) in net assets resulting from operations
 
 
$
143,046,476
Statement of Changes in Net Assets
 
 
Year ended
 
Year ended
Increase (Decrease) in Net Assets
 
 
 
 
Operations
 
 
 
Net investment income (loss)
$
237,076,943
$
87,716,548
Net realized gain (loss)
 
(256,157,570)
 
 
(204,344,494)
 
Change in net unrealized appreciation (depreciation)
 
162,127,103
 
(394,241,058)
 
Net increase (decrease) in net assets resulting from operations
 
143,046,476
 
 
(510,869,004)
 
Distributions to shareholders
 
(171,642,129)
 
 
(74,113,793)
 
 
 
 
 
 
Share transactions
 
 
 
 
Proceeds from sales of shares
 
4,605,616,582
 
4,023,207,126
  Reinvestment of distributions
 
147,718,337
 
 
62,294,822
 
Cost of shares redeemed
 
(2,219,320,181)
 
(2,254,532,105)
 
 
 
 
 
  Net increase (decrease) in net assets resulting from share transactions
 
2,534,014,738
 
 
1,830,969,843
 
Total increase (decrease) in net assets
 
2,505,419,085
 
 
1,245,987,046
 
 
 
 
 
 
Net Assets
 
 
 
 
Beginning of period
 
5,642,498,057
 
4,396,511,011
 
End of period
$
8,147,917,142
$
5,642,498,057
 
 
 
 
 
Other Information
 
 
 
 
Shares
 
 
 
 
Sold
 
479,453,157
 
407,895,188
  Issued in reinvestment of distributions
 
15,423,695
 
 
6,332,883
 
Redeemed
 
(232,163,347)
 
(228,090,762)
Net increase (decrease)
 
262,713,505
 
186,137,309
 
 
 
 
 
 
Financial Highlights
Fidelity® Intermediate Treasury Bond Index Fund
 
Years ended February 28,
 
2024 A 
 
2023 
 
2022  
 
2021 
 
2020 A
  Selected Per-Share Data 
 
 
 
 
 
 
 
 
 
 
  Net asset value, beginning of period
$
9.55
$
10.87
$
11.38
$
11.65
$
10.54
  Income from Investment Operations
 
 
 
 
 
 
 
 
 
 
     Net investment income (loss) B,C
 
.315
 
.196
 
.151
 
.174
 
.255
     Net realized and unrealized gain (loss)
 
(.089)
 
(1.352)
 
(.443)
 
(.092)
 
1.092
  Total from investment operations
 
.226  
 
(1.156)  
 
(.292)  
 
.082  
 
1.347
  Distributions from net investment income
 
(.226)
 
(.164)
 
(.148)
 
(.171)
 
(.237)
  Distributions from net realized gain
 
-
 
-
 
(.070)
 
(.181)
 
-
     Total distributions
 
(.226)
 
(.164)
 
(.218)
 
(.352)
 
(.237)
  Net asset value, end of period
$
9.55
$
9.55
$
10.87
$
11.38
$
11.65
 Total Return D
 
2.39%
 
(10.67)%
 
(2.60)%
 
.63%
 
12.91%
 Ratios to Average Net Assets C,E,F
 
 
 
 
 
 
 
 
 
 
    Expenses before reductions
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Expenses net of fee waivers, if any
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Expenses net of all reductions
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Net investment income (loss)
 
3.30%
 
1.97%
 
1.35%
 
1.46%
 
2.30%
 Supplemental Data
 
 
 
 
 
 
 
 
 
 
    Net assets, end of period (000 omitted)
$
8,147,917
$
5,642,498
$
4,396,511
$
4,571,767
$
3,508,883
    Portfolio turnover rate G
 
48%
 
41%
 
54%
 
56%
 
58%
 
AFor the year ended February 29.
 
BCalculated based on average shares outstanding during the period.
 
CNet investment income (loss) is affected by the timing of the declaration of dividends by any underlying mutual funds or exchange-traded funds (ETFs). Net investment income (loss) of any mutual funds or ETFs is not included in the Fund's net investment income (loss) ratio.
 
DTotal returns would have been lower if certain expenses had not been reduced during the applicable periods shown.
 
EFees and expenses of any underlying mutual funds or exchange-traded funds (ETFs) are not included in the Fund's expense ratio. The Fund indirectly bears its proportionate share of these expenses. For additional expense information related to investments in Fidelity Central Funds, please refer to the "Investments in Fidelity Central Funds" note found in the Notes to Financial Statements section of the most recent Annual or Semi-Annual report.
 
FExpense ratios reflect operating expenses of the class. Expenses before reductions do not reflect amounts reimbursed, waived, or reduced through arrangements with the investment adviser, brokerage services, or other offset arrangements, if applicable, and do not represent the amount paid by the class during periods when reimbursements, waivers or reductions occur.
 
GAmount does not include the portfolio activity of any underlying mutual funds or exchange-traded funds (ETFs).
 
 
Fidelity® Long-Term Treasury Bond Index Fund 
Investment Summary February 29, 2024 (Unaudited)
Coupon Distribution (% of Fund's Investments)
 
1 - 1.99%
18.3
 
2 - 2.99%
26.3
 
3 - 3.99%
37.1
 
4 - 4.99%
16.9
 
5 - 5.99%
0.3
 
 
Coupon distribution shows the range of stated interest rates on the fund's investments, excluding short-term investments.
 
 
Asset Allocation (% of Fund's net assets)
 
Fidelity® Long-Term Treasury Bond Index Fund
Schedule of Investments February 29, 2024
Showing Percentage of Net Assets     
U.S. Government and Government Agency Obligations - 99.3%
 
 
Principal
Amount (a)
 
Value ($)
 
U.S. Treasury Obligations - 99.3%
 
 
 
U.S. Treasury Bonds:
 
 
 
 1.125% 5/15/40
 
34,209,000
21,109,358
 1.125% 8/15/40
 
65,704,000
40,146,170
 1.25% 5/15/50
 
99,203,000
50,384,273
 1.375% 11/15/40
 
98,738,000
62,706,343
 1.375% 8/15/50
 
231,295,000
121,411,806
 1.625% 11/15/50
 
130,631,000
73,362,573
 1.75% 8/15/41
 
87,455,000
58,242,980
 1.875% 2/15/41
 
141,748,000
97,678,768
 1.875% 2/15/51
 
178,310,000
106,742,216
 1.875% 11/15/51
 
198,350,000
118,173,211
 2% 11/15/41
 
77,050,000
53,345,086
 2% 2/15/50
 
98,616,900
61,400,577
 2% 8/15/51
 
94,504,000
58,197,483
 2.25% 5/15/41
 
102,827,000
75,079,777
 2.25% 8/15/46
 
9,663,000
6,563,291
 2.25% 8/15/49
 
68,509,000
45,368,479
 2.25% 2/15/52
 
118,300,000
77,384,835
 2.375% 2/15/42
 
79,900,000
58,701,531
 2.375% 11/15/49
 
87,745,000
59,718,013
 2.375% 5/15/51
 
193,347,000
130,471,462
 2.5% 2/15/45
 
22,364,000
16,210,406
 2.5% 2/15/46
 
18,123,000
13,007,500
 2.5% 5/15/46
 
41,212,000
29,497,167
 2.75% 8/15/42
 
20,787,000
16,172,448
 2.75% 11/15/42
 
30,225,000
23,420,833
 2.75% 8/15/47
 
21,492,000
15,973,761
 2.75% 11/15/47
 
10,975,000
8,143,364
 2.875% 5/15/43
 
78,118,000
61,484,358
 2.875% 8/15/45
 
75,587,500
58,370,675
 2.875% 11/15/46
 
72,529,000
55,490,351
 2.875% 5/15/49
 
84,540,000
63,923,468
 2.875% 5/15/52
 
121,700,000
91,636,297
 3% 5/15/42
 
57,501,000
46,609,502
 3% 11/15/44
 
45,937,000
36,433,783
 3% 5/15/45
 
51,614,000
40,811,351
 3% 11/15/45
 
62,732,000
49,433,306
 3% 2/15/47
 
31,990,000
24,990,938
 3% 5/15/47
 
11,507,000
8,980,404
 3% 2/15/48
 
85,947,000
66,786,862
 3% 8/15/48
 
105,591,000
81,936,141
 3% 2/15/49
 
1,900,000
1,472,203
 3% 8/15/52
 
99,150,000
76,651,471
 3.125% 11/15/41
 
64,820,000
53,965,182
 3.125% 2/15/42
 
106,856,000
88,623,695
 3.125% 2/15/43
 
47,347,000
38,857,831
 3.125% 8/15/44
 
10,234,300
8,302,976
 3.125% 5/15/48
 
88,953,000
70,679,413
 3.25% 5/15/42
 
162,850,000
136,946,674
 3.375% 8/15/42
 
45,700,000
39,084,211
 3.375% 5/15/44
 
17,129,300
14,481,619
 3.375% 11/15/48
 
77,544,000
64,425,130
 3.625% 8/15/43
 
123,303,000
108,699,301
 3.625% 2/15/44
 
73,325,000
64,462,986
 3.625% 2/15/53
 
79,900,000
69,856,321
 3.625% 5/15/53
 
117,000,000
102,365,860
 3.75% 8/15/41
 
95,131,000
86,799,606
 3.75% 11/15/43
 
80,368,000
72,054,935
 3.875% 8/15/40
 
19,822,000
18,539,764
 3.875% 2/15/43
 
7,850,000
7,186,736
 3.875% 5/15/43
 
43,450,000
39,709,229
 4% 11/15/42
 
103,350,000
96,474,802
 4% 11/15/52
 
81,900,000
76,685,273
 4.125% 8/15/53
 
121,650,000
116,460,867
 4.25% 5/15/39
 
12,631,000
12,494,822
 4.25% 11/15/40
 
37,399,000
36,564,827
 4.375% 11/15/39
 
16,793,000
16,790,376
 4.375% 5/15/40
 
23,064,000
22,982,015
 4.375% 5/15/41
 
61,803,000
61,156,000
 4.375% 8/15/43
 
25,800,000
25,259,813
 4.5% 2/15/36
 
20,315,000
21,022,851
 4.5% 5/15/38
 
510,000
521,555
 4.5% 8/15/39
 
3,983,000
4,045,546
 4.625% 2/15/40
 
16,572,000
17,025,141
 4.75% 2/15/37
 
18,378,000
19,412,480
 4.75% 2/15/41
 
38,071,000
39,486,765
 4.75% 11/15/43
 
28,400,000
29,225,375
 4.75% 11/15/53
 
90,550,000
96,336,711
 5% 5/15/37
 
10,719,000
11,571,914
 
TOTAL U.S. GOVERNMENT AND GOVERNMENT AGENCY OBLIGATIONS
 (Cost $4,897,502,248)
 
 
 
4,052,183,423
 
 
 
 
Money Market Funds - 1.1%
 
 
Shares
Value ($)
 
Fidelity Cash Central Fund 5.39% (b)
 
 (Cost $45,152,929)
 
 
45,143,900
45,152,929
 
 
 
 
 
TOTAL INVESTMENT IN SECURITIES - 100.4%
 (Cost $4,942,655,177)
 
 
 
4,097,336,352
NET OTHER ASSETS (LIABILITIES) - (0.4)%  
(14,634,425)
NET ASSETS - 100.0%
4,082,701,927
 
 
 
Legend
 
(a)
Amount is stated in United States dollars unless otherwise noted.
 
(b)
Affiliated fund that is generally available only to investment companies and other accounts managed by Fidelity Investments. The rate quoted is the annualized seven-day yield of the fund at period end. A complete unaudited listing of the fund's holdings as of its most recent quarter end is available upon request. In addition, each Fidelity Central Fund's financial statements, which are not covered by the Fund's Report of Independent Registered Public Accounting Firm, are available on the SEC's website or upon request.
 
 
 
Affiliated Central Funds
 
Fiscal year to date information regarding the Fund's investments in Fidelity Central Funds, including the ownership percentage, is presented below.
 
 
Affiliate
Value,
beginning
of period ($)
Purchases ($)
Sales
Proceeds ($)
Dividend
Income ($)
Realized
Gain (loss) ($)
Change in
Unrealized
appreciation
(depreciation) ($)
Value,
end
of period ($)
% ownership,
end
of period
Fidelity Cash Central Fund 5.39%
30,440,344
647,385,944
632,673,359
769,727
-
-
45,152,929
0.1%
Fidelity Securities Lending Cash Central Fund 5.39%
-
154,018,343
154,018,343
43,702
-
-
-
0.0%
Total
30,440,344
801,404,287
786,691,702
813,429
-
-
45,152,929
 
 
 
 
 
 
 
 
 
 
Amounts in the dividend income column in the above table include any capital gain distributions from underlying funds, which are presented in the corresponding line item in the Statement of Operations, if applicable.
 
Amounts in the dividend income column for Fidelity Securities Lending Cash Central Fund represents the income earned on investing cash collateral, less rebates paid to borrowers and any lending agent fees associated with the loan, plus any premium payments received for lending certain types of securities.
 
Amounts included in the purchases and sales proceeds columns may include in-kind transactions, if applicable.
 
Investment Valuation
 
The following is a summary of the inputs used, as of February 29, 2024, involving the Fund's assets and liabilities carried at fair value. The inputs or methodology used for valuing securities may not be an indication of the risk associated with investing in those securities. For more information on valuation inputs, and their aggregation into the levels used below, please refer to the Investment Valuation section in the accompanying Notes to Financial Statements.
 
Valuation Inputs at Reporting Date:
Description
Total ($)
Level 1 ($)
Level 2 ($)
Level 3 ($)
 Investments in Securities:
 
 
 
 
 U.S. Government and Government Agency Obligations
4,052,183,423
-
4,052,183,423
-
  Money Market Funds
45,152,929
45,152,929
-
-
 Total Investments in Securities:
4,097,336,352
45,152,929
4,052,183,423
-
Fidelity® Long-Term Treasury Bond Index Fund
Financial Statements
Statement of Assets and Liabilities
 
 
 
 
 
 
 
 
Assets
 
 
 
 
Investment in securities, at value  - See accompanying schedule:
 
 
 
 
Unaffiliated issuers (cost $4,897,502,248)
$
4,052,183,423
 
 
Fidelity Central Funds (cost $45,152,929)
45,152,929
 
 
 
 
 
 
 
 
 
 
 
 
Total Investment in Securities (cost $4,942,655,177)
 
 
$
4,097,336,352
Receivable for fund shares sold
 
 
79,557,778
Interest receivable
 
 
26,011,766
Distributions receivable from Fidelity Central Funds
 
 
104,145
  Total assets
 
 
4,203,010,041
Liabilities
 
 
 
 
Payable for investments purchased
$
113,931,049
 
 
Payable for fund shares redeemed
5,503,672
 
 
Distributions payable
772,985
 
 
Accrued management fee
100,408
 
 
  Total Liabilities
 
 
 
120,308,114
Net Assets  
 
 
$
4,082,701,927
Net Assets consist of:
 
 
 
 
Paid in capital
 
 
$
5,342,608,829
Total accumulated earnings (loss)
 
 
 
(1,259,906,902)
Net Assets
 
 
$
4,082,701,927
Net Asset Value, offering price and redemption price per share ($4,082,701,927 ÷ 422,494,380 shares)
 
 
$
9.66
Statement of Operations
 
 
 
Year ended
Investment Income
 
 
 
 
Interest  
 
 
$
131,519,298
Income from Fidelity Central Funds (including $43,702 from security lending)
 
 
813,429
 Total Income
 
 
 
132,332,727
Expenses
 
 
 
 
Management fee
$
1,090,742
 
 
Independent trustees' fees and expenses
11,585
 
 
 Total expenses before reductions
 
1,102,327
 
 
 Expense reductions
 
(723)
 
 
 Total expenses after reductions
 
 
 
1,101,604
Net Investment income (loss)
 
 
 
131,231,123
Realized and Unrealized Gain (Loss)
 
 
 
 
Net realized gain (loss) on:
 
 
 
 
 Investment Securities:
 
 
 
 
   Unaffiliated issuers  
 
(200,459,923)
 
 
Total net realized gain (loss)
 
 
 
(200,459,923)
Change in net unrealized appreciation (depreciation) on investment securities
 
 
 
(32,466,761)
Net gain (loss)
 
 
 
(232,926,684)
Net increase (decrease) in net assets resulting from operations
 
 
$
(101,695,561)
Statement of Changes in Net Assets
 
 
Year ended
 
Year ended
Increase (Decrease) in Net Assets
 
 
 
 
Operations
 
 
 
Net investment income (loss)
$
131,231,123
$
92,144,080
Net realized gain (loss)
 
(200,459,923)
 
 
(214,222,439)
 
Change in net unrealized appreciation (depreciation)
 
(32,466,761)
 
(820,112,215)
 
Net increase (decrease) in net assets resulting from operations
 
(101,695,561)
 
 
(942,190,574)
 
Distributions to shareholders
 
(120,865,981)
 
 
(88,406,732)
 
 
 
 
 
 
Share transactions
 
 
 
 
Proceeds from sales of shares
 
2,242,343,907
 
1,586,555,265
  Reinvestment of distributions
 
113,470,210
 
 
83,448,932
 
Cost of shares redeemed
 
(1,253,838,113)
 
(1,294,379,641)
 
 
 
 
 
  Net increase (decrease) in net assets resulting from share transactions
 
1,101,976,004
 
 
375,624,556
 
Total increase (decrease) in net assets
 
879,414,462
 
 
(654,972,750)
 
 
 
 
 
 
Net Assets
 
 
 
 
Beginning of period
 
3,203,287,465
 
3,858,260,215
 
End of period
$
4,082,701,927
$
3,203,287,465
 
 
 
 
 
Other Information
 
 
 
 
Shares
 
 
 
 
Sold
 
228,087,448
 
142,018,890
  Issued in reinvestment of distributions
 
11,509,987
 
 
7,594,098
 
Redeemed
 
(128,464,955)
 
(114,947,506)
Net increase (decrease)
 
111,132,480
 
34,665,482
 
 
 
 
 
 
Financial Highlights
Fidelity® Long-Term Treasury Bond Index Fund
 
Years ended February 28,
 
2024 A 
 
2023 
 
2022  
 
2021 
 
2020 A
  Selected Per-Share Data 
 
 
 
 
 
 
 
 
 
 
  Net asset value, beginning of period
$
10.29
$
13.94
$
14.49
$
16.10
$
12.53
  Income from Investment Operations
 
 
 
 
 
 
 
 
 
 
     Net investment income (loss) B,C
 
.357
 
.320
 
.310
 
.336
 
.378
     Net realized and unrealized gain (loss)
 
(.659)
 
(3.663)
 
(.448)
 
(1.296)
 
3.562
  Total from investment operations
 
(.302)  
 
(3.343)  
 
(.138)  
 
(.960)  
 
3.940
  Distributions from net investment income
 
(.328)
 
(.307)
 
(.301)
 
(.330)
 
(.370)
  Distributions from net realized gain
 
-
 
-
 
(.111)
 
(.320)
 
-
     Total distributions
 
(.328)
 
(.307)
 
(.412)
 
(.650)
 
(.370)
  Net asset value, end of period
$
9.66
$
10.29
$
13.94
$
14.49
$
16.10
 Total Return D
 
(2.96)%
 
(24.10)%
 
(1.02)%
 
(6.32)%
 
31.86%
 Ratios to Average Net Assets C,E,F
 
 
 
 
 
 
 
 
 
 
    Expenses before reductions
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Expenses net of fee waivers, if any
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Expenses net of all reductions
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Net investment income (loss)
 
3.61%
 
2.85%
 
2.15%
 
2.04%
 
2.69%
 Supplemental Data
 
 
 
 
 
 
 
 
 
 
    Net assets, end of period (000 omitted)
$
4,082,702
$
3,203,287
$
3,858,260
$
3,011,856
$
2,691,210
    Portfolio turnover rate G
 
17%
 
26%
 
22%
 
41%
 
54%
 
AFor the year ended February 29.
 
BCalculated based on average shares outstanding during the period.
 
CNet investment income (loss) is affected by the timing of the declaration of dividends by any underlying mutual funds or exchange-traded funds (ETFs). Net investment income (loss) of any mutual funds or ETFs is not included in the Fund's net investment income (loss) ratio.
 
DTotal returns would have been lower if certain expenses had not been reduced during the applicable periods shown.
 
EFees and expenses of any underlying mutual funds or exchange-traded funds (ETFs) are not included in the Fund's expense ratio. The Fund indirectly bears its proportionate share of these expenses. For additional expense information related to investments in Fidelity Central Funds, please refer to the "Investments in Fidelity Central Funds" note found in the Notes to Financial Statements section of the most recent Annual or Semi-Annual report.
 
FExpense ratios reflect operating expenses of the class. Expenses before reductions do not reflect amounts reimbursed, waived, or reduced through arrangements with the investment adviser, brokerage services, or other offset arrangements, if applicable, and do not represent the amount paid by the class during periods when reimbursements, waivers or reductions occur.
 
GAmount does not include the portfolio activity of any underlying mutual funds or exchange-traded funds (ETFs).
 
Notes to Financial Statements
For the period ended February 29, 2024
 
1. Organization.
Fidelity Short-Term Treasury Bond Index Fund, Fidelity Intermediate Treasury Bond Index Fund and Fidelity Long-Term Treasury Bond Index Fund (the Funds) are funds of Fidelity Salem Street Trust (the Trust). Each Fund is authorized to issue an unlimited number of shares. Share transactions on the Statement of Changes in Net Assets may contain exchanges between affiliated funds. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Massachusetts business trust.
2. Investments in Fidelity Central Funds.
Funds may invest in Fidelity Central Funds, which are open-end investment companies generally available only to other investment companies and accounts managed by the investment adviser and its affiliates. The Schedule of Investments lists any Fidelity Central Funds held as an investment as of period end, but does not include the underlying holdings of each Fidelity Central Fund. An investing fund indirectly bears its proportionate share of the expenses of the underlying Fidelity Central Funds.
 
Based on its investment objective, each Fidelity Central Fund may invest or participate in various investment vehicles or strategies that are similar to those of the investing fund. These strategies are consistent with the investment objectives of the investing fund and may involve certain economic risks which may cause a decline in value of each of the Fidelity Central Funds and thus a decline in the value of the investing fund.
 
Fidelity Central Fund
Investment Manager
Investment Objective
Investment Practices
Expense RatioA
Fidelity Money Market Central Funds
Fidelity Management & Research Company LLC (FMR)
Each fund seeks to obtain a high level of current income consistent with the preservation of capital and liquidity.
Short-term Investments
Less than .005%
 
A Expenses expressed as a percentage of average net assets and are as of each underlying Central Fund's most recent annual or semi-annual shareholder report.
 
A complete unaudited list of holdings for each Fidelity Central Fund is available upon request or at the Securities and Exchange Commission website at www.sec.gov. In addition, the financial statements of the Fidelity Central Funds which contain the significant accounting policies (including investment valuation policies) of those funds, and are not covered by the Report of Independent Registered Public Accounting Firm, are available on the Securities and Exchange Commission website or upon request.
3. Significant Accounting Policies.
Each Fund is an investment company and applies the accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies. The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP), which require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from those estimates. Subsequent events, if any, through the date that the financial statements were issued have been evaluated in the preparation of the financial statements. Each Fund's Schedule of Investments lists any underlying mutual funds or exchange-traded funds (ETFs) but does not include the underlying holdings of these funds. The following summarizes the significant accounting policies of each Fund:
 
Investment Valuation. Investments are valued as of 4:00 p.m. Eastern time on the last calendar day of the period. The Board of Trustees (the Board) has designated each Fund's investment adviser as the valuation designee responsible for the fair valuation function and performing fair value determinations as needed. The investment adviser has established a Fair Value Committee (the Committee) to carry out the day-to-day fair valuation responsibilities and has adopted policies and procedures to govern the fair valuation process and the activities of the Committee. In accordance with these fair valuation policies and procedures, which have been approved by the Board, each Fund attempts to obtain prices from one or more third party pricing services or brokers to value its investments. When current market prices, quotations or currency exchange rates are not readily available or reliable, investments will be fair valued in good faith by the Committee, in accordance with the policies and procedures. Factors used in determining fair value vary by investment type and may include market or investment specific events, transaction data, estimated cash flows, and market observations of comparable investments. The frequency that the fair valuation procedures are used cannot be predicted and they may be utilized to a significant extent. The Committee manages each Fund's fair valuation practices and maintains the fair valuation policies and procedures. Each Fund's investment adviser reports to the Board information regarding the fair valuation process and related material matters.
 
Each Fund categorizes the inputs to valuation techniques used to value its investments into a disclosure hierarchy consisting of three levels as shown below:
 
Level 1 - unadjusted quoted prices in active markets for identical investments
Level 2 - other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, etc.)
Level 3 - unobservable inputs (including the Fund's own assumptions based on the best information available)
 
Valuation techniques used to value each Fund's investments by major category are as follows:
 
Debt securities, including restricted securities, are valued based on evaluated prices received from third party pricing services or from brokers who make markets in such securities. U.S. government and government agency obligations are valued by pricing services who utilize matrix pricing which considers yield or price of bonds of comparable quality, coupon, maturity and type or by broker-supplied prices. When independent prices are unavailable or unreliable, debt securities may be valued utilizing pricing methodologies which consider similar factors that would be used by third party pricing services. Debt securities are generally categorized as Level 2 in the hierarchy but may be Level 3 depending on the circumstances.
 
Investments in open-end mutual funds, including the Fidelity Central Funds, are valued at their closing net asset value (NAV) each business day and are categorized as Level 1 in the hierarchy.
 
Changes in valuation techniques may result in transfers in or out of an assigned level within the disclosure hierarchy. The aggregate value of investments by input level as of February 29, 2024 is included at the end of each Fund's Schedule of Investments.
 
Investment Transactions and Income. For financial reporting purposes, the Funds' investment holdings and NAV include trades executed through the end of the last business day of the period. The NAV per share for processing shareholder transactions is calculated as of the close of business of the New York Stock Exchange (NYSE), normally 4:00 p.m. Eastern time and includes trades executed through the end of the prior business day. Gains and losses on securities sold are determined on the basis of identified cost.  Income and capital gain distributions from Fidelity Central Funds, if any, are recorded on the ex-dividend date. Interest income is accrued as earned and includes coupon interest and amortization of premium and accretion of discount on debt securities as applicable.
 
Expenses. Expenses directly attributable to a fund are charged to that fund. Expenses attributable to more than one fund are allocated among the respective funds on the basis of relative net assets or other appropriate methods. Expenses included in the accompanying financial statements reflect the expenses of that fund and do not include any expenses associated with any underlying mutual funds or exchange-traded funds. Although not included in a fund's expenses, a fund indirectly bears its proportionate share of these expenses through the net asset value of each underlying mutual fund or exchange-traded fund. Expense estimates are accrued in the period to which they relate and adjustments are made when actual amounts are known.
 
Income Tax Information and Distributions to Shareholders. Each year, each Fund intends to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code, including distributing substantially all of its taxable income and realized gains. As a result, no provision for U.S. Federal income taxes is required. As of February 29, 2024, each Fund did not have any unrecognized tax benefits in the financial statements; nor is each Fund aware of any tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Each Fund files a U.S. federal tax return, in addition to state and local tax returns as required. Each Fund's federal income tax returns are subject to examination by the Internal Revenue Service (IRS) for a period of three fiscal years after they are filed. State and local tax returns may be subject to examination for an additional fiscal year depending on the jurisdiction.
 
Distributions are declared and recorded daily and paid monthly from net investment income. Distributions from realized gains, if any, are declared and recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP.
 
Capital accounts within the financial statements are adjusted for permanent book-tax differences. These adjustments have no impact on net assets or the results of operations. Capital accounts are not adjusted for temporary book-tax differences which will reverse in a subsequent period.
 
Book-tax differences are primarily due to market discount, capital loss carryforwards, and losses deferred due to wash sales.
 
As of period end, the cost and unrealized appreciation (depreciation) in securities, and derivatives if applicable, for federal income tax purposes were as follows for each Fund:
 
 
Tax cost
Gross unrealized appreciation
Gross unrealized depreciation
Net unrealized appreciation (depreciation)
Fidelity Short-Term Treasury Bond Index Fund 
$3,531,432,300
$35,079,725
$(64,965,509)
$(29,885,784)
Fidelity Intermediate Treasury Bond Index Fund 
8,481,294,743
31,564,397
(344,748,965)
(313,184,568)
Fidelity Long-Term Treasury Bond Index Fund 
4,973,982,722
25,270,319
(901,916,689)
(876,646,370)
 
The tax-based components of distributable earnings as of period end were as follows for each Fund:
 
 
Undistributed ordinary income
Capital loss carryforward
Net unrealized appreciation (depreciation) on securities and other investments
Fidelity Short-Term Treasury Bond Index Fund 
$3,568,231
$(160,283,701)
$(29,885,784)
Fidelity Intermediate Treasury Bond Index Fund 
3,321,168
(422,189,656)
(313,184,568)
Fidelity Long-Term Treasury Bond Index Fund 
-
(382,455,605)
(876,646,370)
 
 
Capital loss carryforwards are only available to offset future capital gains of the Funds to the extent provided by regulations and may be limited. The capital loss carryforward information presented below, including any applicable limitation, is estimated as of fiscal period end and is subject to adjustment.
 
 
Short-term
Long-term
Total capital loss carryforward
Fidelity Short-Term Treasury Bond Index Fund 
$(38,319,683)  
$(121,964,018)
$(160,283,701)
Fidelity Intermediate Treasury Bond Index Fund 
(69,810,934)
(352,378,722)
(422,189,656)
Fidelity Long-Term Treasury Bond Index Fund 
(41,694,286)
(340,761,319)
(382,455,605)
 
 
 
 
The tax character of distributions paid was as follows:
 
 
 
 
Ordinary Income
Total
Fidelity Short-Term Treasury Bond Index Fund 
$66,054,224
$66,054,224
Fidelity Intermediate Treasury Bond Index Fund 
 171,642,129
 171,642,129
Fidelity Long-Term Treasury Bond Index Fund 
 120,865,981
 120,865,981
 
 
 
 
Ordinary Income
Total
Fidelity Short-Term Treasury Bond Index Fund 
$45,142,094
$45,142,094
Fidelity Intermediate Treasury Bond Index Fund 
 74,113,793
 74,113,793
Fidelity Long-Term Treasury Bond Index Fund 
 88,406,732
 88,406,732
4. Fees and Other Transactions with Affiliates.
Management Fee. Fidelity Management & Research Company LLC (the investment adviser) and its affiliates provide the Funds with investment management related services for which the Funds pay a monthly management fee. The management fee is based on an annual rate of .03% of each Fund's average net assets. Under the management contract, the investment adviser pays all other operating expenses, except the compensation of the independent Trustees and certain other expenses such as interest expense.
 
Interfund Trades. Funds may purchase from or sell securities to other Fidelity Funds under procedures adopted by the Board. The procedures have been designed to ensure these interfund trades are executed in accordance with Rule 17a-7 of the 1940 Act. Any interfund trades are included within the respective purchases and sales amounts shown in the Purchases and Sales of Investments note. During the period, there were no interfund trades.
 
Subsequent Event - Sub-Advisory Arrangements. Effective March 1, 2024, each Fund's sub-advisory agreements with FMR Investment Management (UK) Limited, Fidelity Management & Research (Hong Kong) Limited, and Fidelity Management & Research (Japan) Limited will be amended to provide that the investment adviser will pay each sub-adviser monthly fees equal to 110% of the sub-adviser's costs for providing sub-advisory services.
5. Committed Line of Credit.
Certain Funds participate with other funds managed by the investment adviser or an affiliate in a $4.25 billion credit facility (the "line of credit") to be utilized for temporary or emergency purposes to fund shareholder redemptions or for other short-term liquidity purposes. The commitment fees on the pro-rata portion of the line of credit are borne by the investment adviser. During the period, there were no borrowings on this line of credit.
6. Security Lending.
Funds lend portfolio securities from time to time in order to earn additional income. Lending agents are used, including National Financial Services (NFS), an affiliate of the investment adviser. Pursuant to a securities lending agreement, NFS will receive a fee, which is capped at 9.9% of a fund's daily lending revenue, for its services as lending agent. A fund may lend securities to certain qualified borrowers, including NFS. On the settlement date of the loan, a fund receives collateral (in the form of U.S. Treasury obligations, letters of credit and/or cash) against the loaned securities and maintains collateral in an amount not less than 100% of the market value of the loaned securities during the period of the loan. The market value of the loaned securities is determined at the close of business of a fund and any additional required collateral is delivered to a fund on the next business day. A fund or borrower may terminate the loan at any time, and if the borrower defaults on its obligation to return the securities loaned because of insolvency or other reasons, a fund may apply collateral received from the borrower against the obligation. A fund may experience delays and costs in recovering the securities loaned. Any cash collateral received is invested in the Fidelity Securities Lending Cash Central Fund. Any loaned securities are identified as such in the Schedule of Investments, and the value of loaned securities and cash collateral at period end, as applicable, are presented in the Statement of Assets and Liabilities. Security lending income represents the income earned on investing cash collateral, less rebates paid to borrowers and any lending agent fees associated with the loan, plus any premium payments received for lending certain types of securities. Security lending income is presented in the Statement of Operations as a component of income from Fidelity Central Funds. Affiliated security lending activity, if any, was as follows:
 
 
Total Security Lending Fees Paid to NFS
Security Lending Income From Securities Loaned to NFS
Value of Securities Loaned to NFS at Period End
Fidelity Short-Term Treasury Bond Index Fund
$3,095
$-
$-
Fidelity Intermediate Treasury Bond Index Fund
$5,660
-
-
Fidelity Long-Term Treasury Bond Index Fund
$4,645
-
-
7. Expense Reductions.
Through arrangements with each applicable Fund's custodian, credits realized as a result of certain uninvested cash balances were used to reduce each applicable Fund's expenses. All of the applicable expense reductions are noted in the table below.
 
 
Custodian credits
Fidelity Short-Term Treasury Bond Index Fund 
$125
Fidelity Intermediate Treasury Bond Index Fund 
 23
Fidelity Long-Term Treasury Bond Index Fund 
 723
8. Other.
A fund's organizational documents provide former and current trustees and officers with a limited indemnification against liabilities arising in connection with the performance of their duties to the fund. In the normal course of business, a fund may also enter into contracts that provide general indemnifications. A fund's maximum exposure under these arrangements is unknown as this would be dependent on future claims that may be made against a fund. The risk of material loss from such claims is considered remote.
 
At the end of the period, the following mutual funds managed by the investment adviser or its affiliates were the owners of record of 10% or more of the total outstanding shares.
 
 
Strategic Advisers Fidelity Core Income Fund
Fidelity Short-Term Treasury Bond Index Fund
12%
Fidelity Intermediate Treasury Bond Index Fund
29%
9. Risk and Uncertainties.
Many factors affect a fund's performance. Developments that disrupt global economies and financial markets, such as pandemics, epidemics, outbreaks of infectious diseases, war, terrorism, and environmental disasters, may significantly affect a fund's investment performance. The effects of these developments to a fund will be impacted by the types of securities in which a fund invests, the financial condition, industry, economic sector, and geographic location of an issuer, and a fund's level of investment in the securities of that issuer. Significant concentrations in security types, issuers, industries, sectors, and geographic locations may magnify the factors that affect a fund's performance.
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Fidelity Salem Street Trust and Shareholders of Fidelity Short-Term Treasury Bond Index Fund, Fidelity Intermediate Treasury Bond Index Fund and Fidelity Long-Term Treasury Bond Index Fund
Opinions on the Financial Statements
We have audited the accompanying statements of assets and liabilities, including the schedules of investments, of Fidelity Short-Term Treasury Bond Index Fund, Fidelity Intermediate Treasury Bond Index Fund and Fidelity Long-Term Treasury Bond Index Fund (three of the funds constituting Fidelity Salem Street Trust, hereafter collectively referred to as the "Funds") as of February 29, 2024, the related statements of operations for the year ended February 29, 2024, the statements of changes in net assets for each of the two years in the period ended February 29, 2024, including the related notes, and the financial highlights for each of the five years in the period ended February 29, 2024 (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of each of the Funds as of February 29, 2024, the results of each of their operations for the year then ended, the changes in each of their net assets for each of the two years in the period ended February 29, 2024 and each of the financial highlights for each of the five years in the period ended February 29, 2024 in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinions
These financial statements are the responsibility of the Funds' management. Our responsibility is to express an opinion on the Funds' financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Funds in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of February 29, 2024 by correspondence with the custodian and brokers; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinions.
/s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
April 12, 2024
We have served as the auditor of one or more investment companies in the Fidelity group of funds since 1932.
Trustees and Officers
TRUSTEES AND OFFICERS
The Trustees, Members of the Advisory Board (if any), and officers of the trust and funds, as applicable, are listed below. The Board of Trustees governs each fund and is responsible for protecting the interests of shareholders. The Trustees are experienced executives who meet periodically throughout the year to oversee each fund's activities, review contractual arrangements with companies that provide services to each fund, oversee management of the risks associated with such activities and contractual arrangements, and review each fund's performance. Except for Jonathan Chiel, each of the Trustees oversees 315 funds. Mr. Chiel oversees 192 funds.
The Trustees hold office without limit in time except that (a) any Trustee may resign; (b) any Trustee may be removed by written instrument, signed by at least two-thirds of the number of Trustees prior to such removal; (c) any Trustee who requests to be retired or who has become incapacitated by illness or injury may be retired by written instrument signed by a majority of the other Trustees; and (d) any Trustee may be removed at any special meeting of shareholders by a two-thirds vote of the outstanding voting securities of the trust. Each Trustee who is not an interested person (as defined in the 1940 Act) of the trust and the funds is referred to herein as an Independent Trustee. Each Independent Trustee shall retire not later than the last day of the calendar year in which his or her 75th birthday occurs. The Independent Trustees may waive this mandatory retirement age policy with respect to individual Trustees. Officers and Advisory Board Members hold office without limit in time, except that any officer or Advisory Board Member may resign or may be removed by a vote of a majority of the Trustees at any regular meeting or any special meeting of the Trustees. Except as indicated, each individual has held the office shown or other offices in the same company for the past five years.
The funds' Statement of Additional Information (SAI) includes more information about the Trustees. To request a free copy, call Fidelity at 1-800-544-8544.
Experience, Skills, Attributes, and Qualifications of the Trustees. The Governance and Nominating Committee has adopted a statement of policy that describes the experience, qualifications, attributes, and skills that are necessary and desirable for potential Independent Trustee candidates (Statement of Policy). The Board believes that each Trustee satisfied at the time he or she was initially elected or appointed a Trustee, and continues to satisfy, the standards contemplated by the Statement of Policy. The Governance and Nominating Committee also engages professional search firms to help identify potential Independent Trustee candidates who have the experience, qualifications, attributes, and skills consistent with the Statement of Policy. From time to time, additional criteria based on the composition and skills of the current Independent Trustees, as well as experience or skills that may be appropriate in light of future changes to board composition, business conditions, and regulatory or other developments, have also been considered by the professional search firms and the Governance and Nominating Committee. In addition, the Board takes into account the Trustees' commitment and participation in Board and committee meetings, as well as their leadership of standing and ad hoc committees throughout their tenure.
In determining that a particular Trustee was and continues to be qualified to serve as a Trustee, the Board has considered a variety of criteria, none of which, in isolation, was controlling. The Board believes that, collectively, the Trustees have balanced and diverse experience, qualifications, attributes, and skills, which allow the Board to operate effectively in governing each fund and protecting the interests of shareholders. Information about the specific experience, skills, attributes, and qualifications of each Trustee, which in each case led to the Board's conclusion that the Trustee should serve (or continue to serve) as a trustee of the funds, is provided below.
Board Structure and Oversight Function. Abigail P. Johnson is an interested person and currently serves as Chairman. The Trustees have determined that an interested Chairman is appropriate and benefits shareholders because an interested Chairman has a personal and professional stake in the quality and continuity of services provided to the funds. Independent Trustees exercise their informed business judgment to appoint an individual of their choosing to serve as Chairman, regardless of whether the Trustee happens to be independent or a member of management. The Independent Trustees have determined that they can act independently and effectively without having an Independent Trustee serve as Chairman and that a key structural component for assuring that they are in a position to do so is for the Independent Trustees to constitute a substantial majority for the Board. The Independent Trustees also regularly meet in executive session. Michael E. Kenneally serves as Chairman of the Independent Trustees and as such (i) acts as a liaison between the Independent Trustees and management with respect to matters important to the Independent Trustees and (ii) with management prepares agendas for Board meetings.
Fidelity® funds are overseen by different Boards of Trustees. The funds' Board oversees Fidelity's investment-grade bond, money market, asset allocation and certain equity funds, and other Boards oversee Fidelity's alternative investment, high income and other equity funds. The asset allocation funds may invest in Fidelity® funds that are overseen by such other Boards. The use of separate Boards, each with its own committee structure, allows the Trustees of each group of Fidelity® funds to focus on the unique issues of the funds they oversee, including common research, investment, and operational issues. On occasion, the separate Boards establish joint committees to address issues of overlapping consequences for the Fidelity® funds overseen by each Board.
The Trustees operate using a system of committees to facilitate the timely and efficient consideration of all matters of importance to the Trustees, each fund, and fund shareholders and to facilitate compliance with legal and regulatory requirements and oversight of the funds' activities and associated risks. The Board, acting through its committees, has charged FMR and its affiliates with (i) identifying events or circumstances the occurrence of which could have demonstrably adverse effects on the funds' business and/or reputation; (ii) implementing processes and controls to lessen the possibility that such events or circumstances occur or to mitigate the effects of such events or circumstances if they do occur; and (iii) creating and maintaining a system designed to evaluate continuously business and market conditions in order to facilitate the identification and implementation processes described in (i) and (ii) above. Because the day-to-day operations and activities of the funds are carried out by or through FMR, its affiliates, and other service providers, the funds' exposure to risks is mitigated but not eliminated by the processes overseen by the Trustees. While each of the Board's committees has responsibility for overseeing different aspects of the funds' activities, oversight is exercised primarily through the Operations and Audit Committees. In addition, an ad hoc Board committee of Independent Trustees has worked with FMR to enhance the Board's oversight of investment and financial risks, legal and regulatory risks, technology risks, and operational risks, including the development of additional risk reporting to the Board. Appropriate personnel, including but not limited to the funds' Chief Compliance Officer (CCO), FMR's internal auditor, the independent accountants, the funds' Treasurer and portfolio management personnel, make periodic reports to the Board's committees, as appropriate, including an annual review of Fidelity's risk management program for the Fidelity® funds. The responsibilities of each standing committee, including their oversight responsibilities, are described further under "Standing Committees of the Trustees."
Interested Trustees*:
Correspondence intended for a Trustee who is an interested person may be sent to Fidelity Investments, 245 Summer Street, Boston, Massachusetts 02210.
Name, Year of Birth; Principal Occupations and Other Relevant Experience+
Jonathan Chiel (1957)
Year of Election or Appointment: 2016
Trustee
Mr. Chiel also serves as Trustee of other Fidelity® funds. Mr. Chiel is Senior Counsel at Fidelity Investments (diversified financial services company, 2024-present). Previously, Mr. Chiel served as General Counsel (2012-2024) and Head of Legal, Risk and Compliance (2022-2024) for Fidelity Investments; Executive Vice President and General Counsel for FMR LLC (diversified financial services company, 2012-2024); Director and President of OH Company LLC (holding company, 2018-2024); General Counsel (2004-2012) and Senior Vice President and Deputy General Counsel (2000-2004) for John Hancock Financial Services; a partner with Choate, Hall & Stewart (law firm, 1996-2000); and an Assistant United States Attorney for the United States Attorney's Office of the District of Massachusetts (1986-1995), including Chief of the Criminal Division (1993-1995). Mr. Chiel is a director on the boards of the Harvard Law School Center on the Legal Profession and the U.S. Chamber Litigation Center.
Abigail P. Johnson (1961)
Year of Election or Appointment: 2009
Trustee
Chairman of the Board of Trustees
Ms. Johnson also serves as Trustee of other Fidelity® funds. Ms. Johnson serves as Chairman (2016-present), Chief Executive Officer (2014-present), and Director (2007-present) of FMR LLC (diversified financial services company), President of Fidelity Financial Services (2012-present) and President of Personal, Workplace and Institutional Services (2005-present). Ms. Johnson is Chairman and Director of Fidelity Management & Research Company LLC (investment adviser firm, 2011-present). Previously, Ms. Johnson served as Chairman and Director of FMR Co., Inc. (investment adviser firm, 2011-2019), Vice Chairman (2007-2016) and President (2013-2016) of FMR LLC, President and a Director of Fidelity Management & Research Company (2001-2005), a Trustee of other investment companies advised by Fidelity Management & Research Company, Fidelity Investments Money Management, Inc. (investment adviser firm), and FMR Co., Inc. (2001-2005), Senior Vice President of the Fidelity® funds (2001-2005), and managed a number of Fidelity® funds.
Jennifer Toolin McAuliffe (1959)
Year of Election or Appointment: 2016
Trustee
Ms. McAuliffe also serves as Trustee of other Fidelity® funds and as Trustee of Fidelity Charitable (2020-present). Previously, Ms. McAuliffe served as Co-Head of Fixed Income of Fidelity Investments Limited (now known as FIL Limited (FIL)) (diversified financial services company), Director of Research for FIL's credit and quantitative teams in London, Hong Kong and Tokyo and Director of Research for taxable and municipal bonds at Fidelity Investments Money Management, Inc. Ms. McAuliffe previously served as a member of the Advisory Board of certain Fidelity® funds (2016). Ms. McAuliffe was previously a lawyer at Ropes & Gray LLP and an international banker at Chemical Bank NA (now JPMorgan Chase & Co.). Ms. McAuliffe also currently serves as director or trustee of several not-for-profit entities.
Christine J. Thompson (1958)
Year of Election or Appointment: 2023
Trustee
Ms. Thompson also serves as a Trustee of other Fidelity® funds. Ms. Thompson serves as Leader of Advanced Technologies for Investment Management at Fidelity Investments (2018-present). Previously, Ms. Thompson served as Chief Investment Officer in the Bond group at Fidelity Management & Research Company (2010-2018) and held various other roles including Director of municipal bond portfolio managers and Portfolio Manager of certain Fidelity® funds.
* Determined to be an "Interested Trustee" by virtue of, among other things, his or her affiliation with the trust or various entities under common control with FMR.
+ The information includes the Trustee's principal occupation during the last five years and other information relating to the experience, attributes, and skills relevant to the Trustee's qualifications to serve as a Trustee, which led to the conclusion that the Trustee should serve as a Trustee for each fund.
Independent Trustees:
Correspondence intended for an Independent Trustee may be sent to Fidelity Investments, P.O. Box 55235, Boston, Massachusetts 02205-5235.
Name, Year of Birth; Principal Occupations and Other Relevant Experience+
Elizabeth S. Acton (1951)
Year of Election or Appointment: 2013
Trustee
Ms. Acton also serves as Trustee of other Fidelity® funds. Prior to her retirement, Ms. Acton served as Executive Vice President, Finance (2011-2012), Executive Vice President, Chief Financial Officer (2002-2011) and Treasurer (2004-2005) of Comerica Incorporated (financial services). Prior to joining Comerica, Ms. Acton held a variety of positions at Ford Motor Company (1983-2002), including Vice President and Treasurer (2000-2002) and Executive Vice President and Chief Financial Officer of Ford Motor Credit Company (1998-2000). Ms. Acton currently serves as a member of the Board and Audit and Finance Committees of Beazer Homes USA, Inc. (homebuilding, 2012-present). Ms. Acton previously served as a member of the Advisory Board of certain Fidelity® funds (2013-2016).
Laura M. Bishop (1961)
Year of Election or Appointment: 2023
Trustee
Ms. Bishop also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Prior to her retirement, Ms. Bishop held a variety of positions at United Services Automobile Association (2001-2020), including Executive Vice President and Chief Financial Officer (2014-2020) and Senior Vice President and Deputy Chief Financial Officer (2012-2014). Ms. Bishop currently serves as a member of the Audit Committee and Compensation and Personnel Committee (2021-present) of the Board of Directors of Korn Ferry (global organizational consulting). Previously, Ms. Bishop served as a Member of the Advisory Board of certain Fidelity® funds (2022-2023).    
Ann E. Dunwoody (1953)
Year of Election or Appointment: 2018
Trustee
General Dunwoody also serves as Trustee of other Fidelity® funds. General Dunwoody (United States Army, Retired) was the first woman in U.S. military history to achieve the rank of four-star general and prior to her retirement in 2012 held a variety of positions within the U.S. Army, including Commanding General, U.S. Army Material Command (2008-2012). General Dunwoody currently serves as a member of the Board, Chair of Nomination Committee and a member of the Corporate Governance Committee of Kforce Inc. (professional staffing services, 2016-present) and a member of the Board of Automattic Inc. (software engineering, 2018-present). Previously, General Dunwoody served as President of First to Four LLC (leadership and mentoring services, 2012-2022), a member of the Advisory Board and Nominating and Corporate Governance Committee of L3 Technologies, Inc. (communication, electronic, sensor and aerospace systems, 2013-2019) and a member of the Board and Audit and Sustainability and Corporate Responsibility Committees of Republic Services, Inc. (waste collection, disposal and recycling, 2013-2016). General Dunwoody also serves on several boards for non-profit organizations, including as a member of the Board, Chair of the Nomination and Governance Committee and a member of the Audit Committee of the Noble Reach Foundation (formerly Logistics Management Institute) (consulting non-profit, 2012-present) and a member of the Board of ThanksUSA (military family education non-profit, 2014-present). Previously, General Dunwoody served as a member of the Board of Florida Institute of Technology (2015-2022) and a member of the Council of Trustees for the Association of the United States Army (advocacy non-profit, 2013-2021). General Dunwoody previously served as a member of the Advisory Board of certain Fidelity® funds (2018).
Robert F. Gartland (1951)
Year of Election or Appointment: 2010
Trustee
Mr. Gartland also serves as Trustee of other Fidelity® funds. Prior to his retirement, Mr. Gartland held a variety of positions at Morgan Stanley (financial services, 1979-2007), including Managing Director (1987-2007) and Chase Manhattan Bank (1975-1978). Mr. Gartland previously served as Chairman and an investor in Gartland & Mellina Group Corp. (consulting, 2009-2019), as a member of the Board of National Securities Clearing Corporation (1993-1996) and as Chairman of TradeWeb (2003-2004).
Robert W. Helm (1957)
Year of Election or Appointment: 2023
Trustee
Mr. Helm also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Mr. Helm was formerly Deputy Chairman (2003-2020), partner (1991-2020) and an associate (1984-1991) of Dechert LLP (formerly Dechert Price & Rhoads). Mr. Helm currently serves on boards and committees of several not-for-profit organizations, including as a Trustee and member of the Executive Committee of the Baltimore Council on Foreign Affairs, a member of the Board of Directors of the St. Vincent de Paul Society of Baltimore and a member of the Life Guard Society of Mt. Vernon. Previously, Mr. Helm served as a Member of the Advisory Board of certain Fidelity® funds (2021-2023).     
Michael E. Kenneally (1954)
Year of Election or Appointment: 2009
Trustee
Chairman of the Independent Trustees
Mr. Kenneally also serves as Trustee of other Fidelity® funds and was Vice Chairman (2018-2021) of the Independent Trustees of certain Fidelity® funds. Prior to retirement in 2005, he was Chairman and Global Chief Executive Officer of Credit Suisse Asset Management, the worldwide fund management and institutional investment business of Credit Suisse Group. Previously, Mr. Kenneally was an Executive Vice President and the Chief Investment Officer for Bank of America. In this role, he was responsible for the investment management, strategy and products delivered to the bank's institutional, high-net-worth and retail clients. Earlier, Mr. Kenneally directed the organization's equity and quantitative research groups. He began his career as a research analyst and then spent more than a dozen years as a portfolio manager for endowments, pension plans and mutual funds. He earned the Chartered Financial Analyst (CFA) designation in 1991.     
Mark A. Murray (1954)
Year of Election or Appointment: 2016
Trustee
Mr. Murray also serves as Trustee of other Fidelity® funds. Previously, Mr. Murray served as Co-Chief Executive Officer (2013-2016), President (2006-2013) and Vice Chairman (2013-2020) of Meijer, Inc. Mr. Murray serves as a member of the Board (2009-present) and Public Policy and Responsibility Committee (2009-present) and Chair of the Nuclear Review Committee (2019-present) of DTE Energy Company (diversified energy company). Mr. Murray previously served as a member of the Board of Spectrum Health (not-for-profit health system, 2015-2019) and as a member of the Board and Audit Committee and Chairman of the Nominating and Corporate Governance Committee of Universal Forest Products, Inc. (manufacturer and distributor of wood and wood-alternative products, 2004-2016). Mr. Murray also serves as a member of the Board of many community and professional organizations. Mr. Murray previously served as a member of the Advisory Board of certain Fidelity® funds (2016).
Carol J. Zierhoffer (1960)
Year of Election or Appointment: 2023
Trustee
Ms. Zierhoffer also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Prior to her retirement, Ms. Zierhoffer held a variety of positions at Bechtel Corporation (engineering company, 2013-2019), including Principal Vice President and Chief Information Officer (2013-2016) and Senior Vice President and Chief Information Officer (2016-2019). Ms. Zierhoffer currently serves as a member of the Board of Directors, Audit Committee and Compensation Committee of Allscripts Healthcare Solutions, Inc. (healthcare technology, 2020-present) and as a member of the Board of Directors, Audit and Finance Committee and Nominating and Governance Committee of Atlas Air Worldwide Holdings, Inc. (aviation operating services, 2021-present). Previously, Ms. Zierhoffer served as a member of the Board of Directors and Audit Committee and as the founding Chair of the Information Technology Committee of MedAssets, Inc. (healthcare technology, 2013-2016), and as a Member of the Advisory Board of certain Fidelity® funds (2023).    
+ The information includes the Trustee's principal occupation during the last five years and other information relating to the experience, attributes, and skills relevant to the Trustee's qualifications to serve as a Trustee, which led to the conclusion that the Trustee should serve as a Trustee for each fund.
Advisory Board Members and Officers:
Correspondence intended for a Member of the Advisory Board (if any) may be sent to Fidelity Investments, P.O. Box 55235, Boston, Massachusetts 02205-5235. Correspondence intended for an officer may be sent to Fidelity Investments, 245 Summer Street, Boston, Massachusetts 02210.
Name, Year of Birth; Principal Occupations+
Lester Owens (1957)
Year of Election or Appointment: 2024
Member of the Advisory Board
Mr. Owens also serves as a Member of the Advisory Board of other Fidelity® funds. Prior to his retirement, Mr. Owens served as Senior Executive Vice President, Head of Operations, and member of the Operating Committee of Wells Fargo & Company (financial services, 2020-2023). Mr. Owens currently serves as Chairman of the Board of Directors of Robert Wood Johnson Barnabas Health, Inc. (academic healthcare system, 2022-present). Previously, Mr. Owens served as Senior Executive Vice President and Head of Operations at Bank of New York Mellon (financial services, 2019-2020) and held various roles at JPMorgan Chase & Co. (financial services, 2007-2019), including Managing Director for Wholesale Banking Operations. Mr. Owens also previously served as a member of the Board of Directors of the Depository Trust & Clearing Corporation (financial services, 2016) and as Chairman of the Board of Directors of the Clearing House Interbank Payments System (private clearing system, 2015-2016).        
Heather Bonner (1977)
Year of Election or Appointment: 2023
Assistant Treasurer
Ms. Bonner also serves as an officer of other funds. Ms. Bonner is a Senior Vice President (2022-present) and is an employee of Fidelity Investments (2022-present). Ms. Bonner serves as Senior Vice President, Vice President, Treasurer, or Director of certain Fidelity entities. Prior to joining Fidelity, Ms. Bonner served as Managing Director at AQR Capital Management (2013-2022) and was the Treasurer and Principal Financial Officer of the AQR Funds (2013-2022).
Craig S. Brown (1977)
Year of Election or Appointment: 2019
Assistant Treasurer
Mr. Brown also serves as an officer of other funds. Mr. Brown is a Vice President (2015-present) and is an employee of Fidelity Investments. Mr. Brown serves as Assistant Treasurer of FIMM, LLC (2021-present). Previously, Mr. Brown served as Assistant Treasurer of certain Fidelity® funds (2019-2022).     
John J. Burke III (1964)
Year of Election or Appointment: 2018
Chief Financial Officer
Mr. Burke also serves as Chief Financial Officer of other funds. Mr. Burke is Head of Fidelity Fund and Investment Operations (2018-present) and is an employee of Fidelity Investments. Mr. Burke serves as President, Executive Vice President, or Director of certain Fidelity entities. Previously Mr. Burke served as head of Asset Management Investment Operations (2012-2018).
Margaret Carey (1973)
Year of Election or Appointment: 2023
Secretary and Chief Legal Officer (CLO)
Ms. Carey also serves as an officer of other funds and as CLO of certain Fidelity entities. Ms. Carey is a Senior Vice President, Deputy General Counsel (2019-present) and is an employee of Fidelity Investments.        
David J. Carter (1973)
Year of Election or Appointment: 2020
Assistant Secretary
Mr. Carter also serves as Assistant Secretary of other funds. Mr. Carter is a Senior Vice President, Deputy General Counsel (2022-present) and is an employee of Fidelity Investments. Mr. Carter serves as Chief Legal Officer of Fidelity Investments Institutional Operations Company LLC - Shareholder Division (transfer agent, 2020-present).
Jonathan Davis (1968)
Year of Election or Appointment: 2010
Assistant Treasurer
Mr. Davis also serves as an officer of other funds. Mr. Davis is a Vice President (2006-present) and is an employee of Fidelity Investments. Mr. Davis serves as Assistant Treasurer or Director of certain Fidelity entities.        
Laura M. Del Prato (1964)
Year of Election or Appointment: 2018
President and Treasurer
Ms. Del Prato also serves as an officer of other funds. Ms. Del Prato is a Senior Vice President (2017-present) and is an employee of Fidelity Investments. Ms. Del Prato serves as Vice President or Assistant Treasurer of certain Fidelity entities. Previously, Ms. Del Prato served as President and Treasurer of The North Carolina Capital Management Trust: Cash Portfolio and Term Portfolio (2018-2020).     
Robin Foley (1964)
Year of Election or Appointment: 2023
Vice President
Ms. Foley also serves as Vice President of other funds. Ms. Foley serves as Head of Fidelity's Fixed Income division (2023-present) and is an employee of Fidelity Investments. Previously, Ms. Foley served as Chief Investment Officer of Bonds (2017-2023).     
Christopher M. Gouveia (1973)
Year of Election or Appointment: 2023
Chief Compliance Officer
Mr. Gouveia also serves as Chief Compliance Officer of other funds. Mr. Gouveia is a Senior Vice President of Asset Management Compliance (2019-present) and is an employee of Fidelity Investments. Mr. Gouveia serves as Compliance Officer of Fidelity Management Trust Company (2023-present). Previously, Mr. Gouveia served as Chief Compliance Officer of the North Carolina Capital Management Trust (2016-2019).          
Colm A. Hogan (1973)
Year of Election or Appointment: 2016
Assistant Treasurer
Mr. Hogan also serves as an officer of other funds. Mr. Hogan is a Vice President (2016-present) and is an employee of Fidelity Investments. Mr. Hogan serves as Assistant Treasurer of certain Fidelity entities. Previously, Mr. Hogan served as Deputy Treasurer of certain Fidelity® funds (2016-2020) and Assistant Treasurer of certain Fidelity® funds (2016-2018). 
Chris Maher (1972)
Year of Election or Appointment: 2013
Assistant Treasurer
Mr. Maher also serves as an officer of other funds. Mr. Maher is a Vice President (2008-present) and is an employee of Fidelity Investments. Mr. Maher serves as Assistant Treasurer of certain Fidelity entities. Previously, Mr. Maher served as Assistant Treasurer of certain funds (2013-2020).     
Brett Segaloff (1972)
Year of Election or Appointment: 2021
Anti-Money Laundering (AML) Officer
Mr. Segaloff also serves as AML Officer of other funds. Mr. Segaloff is a Vice President (2022-present) and is an employee of Fidelity Investments. Mr. Segaloff serves as Anti Money Laundering Compliance Officer or Anti Money Laundering/Bank Secrecy Act Compliance Officer of certain Fidelity entities.          
Stacie M. Smith (1974)
Year of Election or Appointment: 2013
Assistant Treasurer
Ms. Smith also serves as an officer of other funds. Ms. Smith is a Senior Vice President (2016-present) and is an employee of Fidelity Investments. Ms. Smith serves as Assistant Treasurer of certain Fidelity entities and has served in other fund officer roles.
Jim Wegmann (1979)
Year of Election or Appointment: 2021
Deputy Treasurer
Mr. Wegmann also serves as an officer of other funds. Mr. Wegmann is a Vice President (2016-present) and is an employee of Fidelity Investments. Mr. Wegmann serves as Assistant Treasurer of FIMM, LLC (2021-present). Previously, Mr. Wegmann served as Assistant Treasurer of certain Fidelity® funds (2019-2021).          
+ The information includes principal occupation during the last five years. 
Shareholder Expense Example  
As a shareholder, you incur two types of costs: (1) transaction costs, which may include sales charges (loads) on purchase payments or redemption proceeds, as applicable and (2) ongoing costs, which generally include management fees, distribution and/or service (12b-1) fees and other Fund expenses. This Example is intended to help you understand your ongoing costs (in dollars) of investing in a fund and to compare these costs with the ongoing costs of investing in other mutual funds.
 
The Example is based on an investment of $1,000 invested at the beginning of the period and held for the entire period (September 1, 2023 to February 29, 2024).
 
Actual Expenses
The first line of the accompanying table provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000.00 (for example, an $8,600 account value divided by $1,000.00 = 8.6), then multiply the result by the number in the first line for a class/Fund under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If any fund is a shareholder of any underlying mutual funds or exchange-traded funds (ETFs) (the Underlying Funds), such fund indirectly bears its proportional share of the expenses of the Underlying Funds in addition to the direct expenses incurred presented in the table. These fees and expenses are not included in the annualized expense ratio used to calculate the expense estimate in the table below.
 
Hypothetical Example for Comparison Purposes
The second line of the accompanying table provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. If any fund is a shareholder of any Underlying Funds, such fund indirectly bears its proportional share of the expenses of the Underlying Funds in addition to the direct expenses as presented in the table. These fees and expenses are not included in the annualized expense ratio used to calculate the expense estimate in the table below.
Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transaction costs. Therefore, the second line of the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher.
 
 
 
 
 
Annualized Expense Ratio- A
 
Beginning Account Value September 1, 2023
 
Ending Account Value February 29, 2024
 
Expenses Paid During Period- C September 1, 2023 to February 29, 2024
 
 
 
 
 
 
 
 
 
 
Fidelity® Short-Term Treasury Bond Index Fund
 
 
 
.03%
 
 
 
 
 
 
Actual
 
 
 
 
 
$ 1,000
 
$ 1,023.50
 
$ .15
Hypothetical-B
 
 
 
 
 
$ 1,000
 
$ 1,024.71
 
$ .15
 
 
 
 
 
 
 
 
 
 
Fidelity® Intermediate Treasury Bond Index Fund
 
 
 
.03%
 
 
 
 
 
 
Actual
 
 
 
 
 
$ 1,000
 
$ 1,016.00
 
$ .15
Hypothetical-B
 
 
 
 
 
$ 1,000
 
$ 1,024.71
 
$ .15
 
 
 
 
 
 
 
 
 
 
Fidelity® Long-Term Treasury Bond Index Fund
 
 
 
.03%
 
 
 
 
 
 
Actual
 
 
 
 
 
$ 1,000
 
$ 997.00
 
$ .15
Hypothetical-B
 
 
 
 
 
$ 1,000
 
$ 1,024.71
 
$ .15
 
A   Annualized expense ratio reflects expenses net of applicable fee waivers.
 
B   5% return per year before expenses
 
C   Expenses are equal to the annualized expense ratio, multiplied by the average account value over the period, multiplied by 182/ 366 (to reflect the one-half year period). The fees and expenses of any Underlying Funds are not included in each annualized expense ratio.
 
 
 
Distributions (Unaudited)
The dividend and capital gains distributions for the fund(s) are available on Fidelity.com or Institutional.Fidelity.com.
 
A percentage of the dividends distributed during the fiscal year for the following funds were derived from interest on U.S. Government securities which is generally exempt from state income tax:
 
Fidelity® Short-Term Treasury Bond Index Fund
99.56%
Fidelity® Intermediate Treasury Bond Index Fund
99.43%
Fidelity® Long-Term Treasury Bond Index Fund
99.44%
 
The funds hereby designate the amounts noted below as distributions paid in the calendar year 2023 as qualifying to be taxed as interest-related dividends for nonresident alien shareholders:
 
Fidelity® Short-Term Treasury Bond Index Fund
$66,476,884
Fidelity® Intermediate Treasury Bond Index Fund
$150,996,870
Fidelity® Long-Term Treasury Bond Index Fund
$111,959,841
 
The funds hereby designate the amounts noted below as distributions paid during the fiscal year ended 2024 as qualifying to be taxed as section 163(j) interest dividends:
 
Fidelity® Short-Term Treasury Bond Index Fund
$66,054,224
Fidelity® Intermediate Treasury Bond Index Fund
$171,642,129
Fidelity® Long-Term Treasury Bond Index Fund
$120,865,981
 
The funds will notify shareholders in January 2025 of amounts for use in preparing 2024 income tax returns.
 
 
Board Approval of Investment Advisory Contracts
 
Board Approval of Investment Advisory Contracts and Management Fees
Fidelity Intermediate Treasury Bond Index Fund
Fidelity Long-Term Treasury Bond Index Fund
Fidelity Short-Term Treasury Bond Index Fund
 
Each year, the Board of Trustees, including the Independent Trustees (together, the Board), considers the renewal of each fund's management contract with Fidelity Management & Research Company LLC (FMR) and the sub-advisory agreements (together, the Advisory Contracts) for each fund. FMR and the sub-advisers are referred to herein as the Investment Advisers. The Board, assisted by the advice of fund counsel and Independent Trustees' counsel, requests and considers a broad range of information relevant to the renewal of the Advisory Contracts throughout the year.
The Board meets regularly and, at each of its meetings, covers an extensive agenda of topics and materials and considers factors that are relevant to its annual consideration of the renewal of each fund's Advisory Contracts, including the services and support provided to each fund and its shareholders. The Board's Operations Committee, of which all the Independent Trustees are members, meets regularly throughout the year and requests, receives and considers, among other matters, information related to the annual consideration of the renewal of each fund's Advisory Contracts before making its recommendation to the Board. The Board also meets as needed to review matters specifically related to the Board's annual consideration of the renewal of the Advisory Contracts. Members of the Board may also meet from time to time with trustees of other Fidelity funds through joint ad hoc committees to discuss certain matters relevant to all of the Fidelity funds.
At its September 2023 meeting, the Board unanimously determined to renew each fund's Advisory Contracts. In reaching its determination, the Board considered all factors it believed relevant, including (i) the nature, extent, and quality of the services provided to each fund and its shareholders (including the investment performance of each fund); (ii) the competitiveness relative to peer funds of each fund's management fee and total expense ratio; (iii) the total costs of the services provided by and the profits realized by FMR and its affiliates (Fidelity) from its relationships with each fund; and (iv) the extent to which, if any, economies of scale exist and are realized as each fund grows, and whether any economies of scale are appropriately shared with fund shareholders. The Board also considered the broad range of investment choices available to shareholders from FMR's competitors and that each fund's shareholders have chosen to invest in each fund, which is part of the Fidelity family of funds. The Board's decision to renew the Advisory Contracts was not based on any single factor.
The Board reached a determination, with the assistance of fund counsel and Independent Trustees' counsel and through the exercise of its business judgment, that the renewal of the Advisory Contracts was in the best interests of each fund and its shareholders and that the compensation payable under the Advisory Contracts was fair and reasonable in light of all of the surrounding circumstances.
Nature, Extent, and Quality of Services Provided. The Board considered Fidelity's staffing as it relates to the funds, including the backgrounds and experience of investment personnel, and also considered the Investment Advisers' implementation of each fund's investment program. The Independent Trustees also had discussions with senior management of Fidelity's investment operations and investment groups. The Board considered the structure of the investment personnel compensation program and whether this structure provides appropriate incentives to act in the best interests of each fund. Additionally, the Board considered the portfolio managers' investments, if any, in the funds that they manage.
Resources Dedicated to Investment Management and Support Services. The Board reviewed the general qualifications and capabilities of Fidelity's investment staff, including its size, education, experience, and resources, as well as Fidelity's approach to recruiting, managing, training, and compensating investment personnel. The Board noted the resources devoted to Fidelity's global investment organization, and that Fidelity's analysts have extensive resources, tools and capabilities that allow them to conduct quantitative and fundamental analysis, as well as credit analysis of issuers, counterparties and guarantors. Further, the Board considered that Fidelity's investment professionals have sufficient access to global information and data so as to provide competitive investment results over time, and that those professionals also have access to sophisticated tools that permit them to assess portfolio construction and risk and performance attribution characteristics continuously, as well as to transmit new information and research conclusions rapidly around the world. Additionally, in its deliberations, the Board considered Fidelity's trading, risk management, compliance, cybersecurity, and technology and operations capabilities and resources, which are integral parts of the investment management process.
Shareholder and Administrative Services. The Board considered (i) the nature, extent, quality, and cost of advisory, administrative, and shareholder services performed by the Investment Advisers and their affiliates under the Advisory Contracts and under separate agreements covering transfer agency, pricing and bookkeeping, and securities lending services for each fund; (ii) the nature and extent of Fidelity's supervision of third party service providers, principally custodians, subcustodians, and pricing vendors; and (iii) the resources devoted by Fidelity to, and the record of compliance with, each fund's compliance policies and procedures. The Board also considered each fund's securities lending activities and any payments made to Fidelity relating to securities lending.
The Board noted that the growth of fund assets over time across the complex allows Fidelity to reinvest in the development of services designed to enhance the value and convenience of the Fidelity funds as investment vehicles. These services include 24-hour access to account information and market information over the Internet and through telephone representatives, investor education materials and asset allocation tools. The Board also considered that it reviews customer service metrics such as telephone response times, continuity of services on the website and metrics addressing services at Fidelity Investor Centers.
Investment in a Large Fund Family. The Board considered the benefits to shareholders of investing in a fund that is part of a large family of funds offering a variety of investment disciplines and providing a large variety of fund investor services. The Board noted that Fidelity had taken, or had made recommendations to the Board that resulted in the Fidelity funds taking, a number of actions over the previous year that benefited particular funds and/or the Fidelity funds in general.
Investment Performance. The Board took into account discussions that occur with representatives of the Investment Advisers, and reports that it receives, at Board meetings throughout the year relating to fund investment performance. In this regard the Board noted that as part of regularly scheduled fund reviews and other reports to the Board on fund performance, the Board considered annualized return information for each fund for different time periods, measured against the securities market index each fund seeks to track (benchmark index) and an appropriate peer group of funds with similar objectives (peer group). The Board also periodically considers each fund's tracking error versus its benchmark index. In its evaluation of fund investment performance at meetings throughout the year, the Board gave particular attention to information indicating underperformance of certain Fidelity funds over different time periods and discussed with the Investment Advisers the reasons for such underperformance.
In addition to reviewing absolute and relative fund performance, the Independent Trustees periodically consider the appropriateness of fund performance metrics in evaluating the results achieved. In general, the Independent Trustees believe that an index fund's performance should be evaluated based on gross performance (before fees and expenses but after transaction costs) of each fund compared to each fund's benchmark index, over appropriate time periods taking into account relevant factors including the following: general market conditions; the characteristics of each fund's benchmark index; the extent to which statistical sampling is employed; any securities lending revenues; and fund cash flows and other factors.
Based on its review, the Board concluded that the nature, extent, and quality of services provided to each fund under the Advisory Contracts should continue to benefit the shareholders of each fund.
Competitiveness of Management Fee and Total Expense Ratio. The Board was provided with information regarding industry trends in management fees and expenses. In its review of each fund's management fee and total expense ratio, the Board considered each fund's management fee rate as well as other fund or class expenses, as applicable, such as transfer agent fees, pricing and bookkeeping fees, and custodial, legal, and audit fees. The Board noted that Fidelity may agree to waive fees or reimburse expenses from time to time, and the extent to which, if any, it has done so for each fund.
Comparisons of Management Fees and Total Expense Ratios. Among other things, the Board reviewed data for selected groups of competitive funds and classes (referred to as "mapped groups") that were compiled by Fidelity based on combining similar investment objective categories (as classified by Lipper) that have comparable investment mandates. The data reviewed by the Board included (i) gross management fee comparisons (before taking into account expense reimbursements or caps) relative to the total universe of funds within the mapped group; (ii) gross management fee comparisons relative to a subset of non-Fidelity funds in the mapped group that are similar in size and management fee structure to each fund (referred to as the "asset size peer group"); (iii) total expense comparisons of each fund relative to funds and classes in the mapped group that have a similar sales load structure to each fund (referred to as the "similar sales load structure group"); and (iv) total expense comparisons of each fund relative to funds and classes in the similar sales load structure group that are similar in size and management fee structure to each fund (referred to as the "total expense asset size peer group"). The total expense asset size peer group comparison excludes performance adjustments and fund-paid 12b-1 fees to eliminate variability in fee structures.
The information provided to the Board indicated that each fund's management fee rate ranked below the competitive median of the mapped group for 2022 and below the competitive median of the asset size peer group for 2022. Further, the information provided to the Board indicated that the total expense ratio of each fund ranked below the competitive median of the similar sales load structure group for 2022 and below the competitive median of the total expense asset size peer group for 2022.
Fees Charged to Other Fidelity Clients. The Board also considered Fidelity fee structures and other information with respect to clients of Fidelity, such as other funds advised or subadvised by Fidelity, pension plan clients, and other institutional clients with similar mandates. The Board noted that a joint ad hoc committee created by it and the boards of other Fidelity funds periodically reviews and compares Fidelity's institutional investment advisory business with its business of providing services to the Fidelity funds and also noted the most recent findings of the committee. The Board noted that the committee's review included a consideration of the differences in services provided, fees charged, and costs incurred, as well as competition in the markets serving the different categories of clients.
Based on its review, the Board concluded that each fund's management fee is fair and reasonable in light of the services that each fund receives and the other factors considered. Further, based on its review of total expense ratios and fees charged to other Fidelity clients, the Board concluded that each fund's total expense ratio was reasonable in light of the services that each fund and its shareholders receive and the other factors considered.
Costs of the Services and Profitability. The Board considered the revenues earned and the expenses incurred by Fidelity in conducting the business of developing, marketing, distributing, managing, administering and servicing each fund and servicing each fund's shareholders. The Board also considered the level of Fidelity's profits in respect of all the Fidelity funds.
On an annual basis, Fidelity presents to the Board information about the profitability of its relationships with each fund. Fidelity calculates profitability information for each fund, as well as aggregate profitability information for groups of Fidelity funds and all Fidelity funds, using a series of detailed revenue and cost allocation methodologies which originate with the books and records of Fidelity on which Fidelity's audited financial statements are based. The Audit Committee of the Board reviews any significant changes from the prior year's methodologies and the full Board approves such changes.
A public accounting firm has been engaged annually by the Board as part of the Board's assessment of Fidelity's profitability analysis. The engagement includes the review and assessment of the methodologies used by Fidelity in determining the revenues and expenses attributable to Fidelity's fund business, and completion of agreed-upon procedures in respect of the mathematical accuracy of certain fund profitability information and its conformity to established allocation methodologies. After considering the reports issued under the engagement and information provided by Fidelity, the Board concluded that while other allocation methods may also be reasonable, Fidelity's profitability methodologies are reasonable in all material respects.
The Board also reviewed Fidelity's non-fund businesses and potential indirect benefits such businesses may have received as a result of their association with Fidelity's fund business (i.e., fall-out benefits) as well as cases where Fidelity's affiliates may benefit from the funds' business. The Board considered areas where potential indirect benefits to the Fidelity funds from their relationships with Fidelity may exist. The Board's consideration of these matters was informed by the findings of a joint ad hoc committee created by it and the boards of other Fidelity funds to evaluate potential fall-out benefits.
The Board considered the costs of the services provided by and the profits realized by Fidelity in connection with the operation of each fund and was satisfied that the profitability was not excessive.
Economies of Scale. The Board considered whether there have been economies of scale in respect of the management of the Fidelity funds, whether the Fidelity funds (including each fund) have appropriately benefited from any such economies of scale, and whether there is potential for realization of any further economies of scale. The Board considered the extent to which each fund will benefit from economies of scale as assets grow through increased services to each fund, through waivers or reimbursements, or through fee or expense ratio reductions. The Board recognized that, due to each fund's current contractual arrangements, its expense ratio will not decline if each fund's operating costs decrease as assets grow, or rise as assets decrease. The Board also noted that a committee created by it and the boards of other Fidelity funds periodically analyzes whether Fidelity attains economies of scale in respect of the management and servicing of the Fidelity funds, whether the Fidelity funds have appropriately benefited from such economies of scale, and whether there is potential for realization of any further economies of scale.
The Board concluded, taking into account the analysis of the committee, that economies of scale, if any, are being appropriately shared between fund shareholders and Fidelity.
Additional Information Requested by the Board. In order to develop fully the factual basis for consideration of the Fidelity funds' advisory contracts, the Board requested and received additional information on certain topics, including: (i) Fidelity's fund profitability methodology, profitability trends for certain funds, the allocation of various costs to different funds, and the impact of certain factors on fund profitability results; (ii) portfolio manager changes that have occurred during the past year and Fidelity's views regarding portfolio manager investment in the Fidelity funds that they manage; (iii) hiring, training, and retaining personnel; (iv) the arrangements with and compensation paid to certain fund sub-advisers and the treatment of such compensation within Fidelity's fund profitability methodology; (v) the terms of the funds' various management fee structures, including the basic group fee and the terms of Fidelity's voluntary expense limitation arrangements; (vi) Fidelity's transfer agent, pricing and bookkeeping fees, expense and service structures for different funds and classes relative to competitive trends and market conditions; (vii) the impact on fund profitability of recent industry trends, such as the growth in passively managed funds and the changes in flows for different types of funds; (viii) the types of management fee and total expense comparisons provided, and the challenges and limitations associated with such information; (ix) explanations regarding the relative total expense ratios and management fees of certain funds and classes, total expense and management fee competitive trends, and methodologies for total expense and management fee competitive comparisons; (x) information concerning expense limitations applicable to certain funds; and (xi) matters related to money market funds, exchange-traded funds, and target date funds.
Conclusion. Based on its evaluation of all of the conclusions noted above, and after considering all factors it believed relevant, the Board, including the Independent Trustees, concluded that the advisory and sub-advisory fee arrangements are fair and reasonable in light of all of the surrounding circumstances and that each fund's Advisory Contracts should be renewed through September 30, 2024.
Board Approval of Investment Advisory Contracts
Fidelity Intermediate Treasury Bond Index Fund
Fidelity Long-Term Treasury Bond Index Fund
Fidelity Short-Term Treasury Bond Index Fund
At its January 2024 meeting, the Board of Trustees, including the Independent Trustees (together, the Board), approved amended and restated sub-advisory agreements (the Sub-Advisory Contracts) for each fund, including each fund's sub-advisory agreements with FMR Investment Management (UK) Limited (FMR UK), Fidelity Management & Research (Hong Kong) Limited (FMR H.K.), and Fidelity Management & Research (Japan) Limited (FMR Japan). The Sub-Advisory Contracts will be effective March 1, 2024. The Board will consider the annual renewal of each fund's Sub-Advisory Contracts in September 2024, following its review of additional materials provided by FMR.
The Board considered the Sub-Advisory Contracts, which changed the arrangements for fees paid by FMR to the sub-advisers under the agreements. The Board noted that the agreements with FMR UK, FMR H.K., and FMR Japan were amended to provide that FMR will compensate each sub-adviser at a fee equal to 110% of the sub-adviser's costs incurred in providing services under the agreement. The Board considered that, under the Sub-Advisory Contracts, FMR, and not each fund, will continue to pay the sub-advisory fees to each applicable sub-adviser, and that the management fee paid by the funds under the management contracts with FMR will remain unchanged.
The Board considered that the approval of each fund's Sub-Advisory Contracts will not result in any changes in the investment process or strategies employed in the management of each fund's assets or the day-to-day management of each fund or the persons primarily responsible for such management. Further, the Board considered that the Sub-Advisory Contracts would not change the obligations and services of FMR and its affiliates on behalf of each fund, and, in particular, there would be no change in the nature and level of services provided to each fund by FMR and its affiliates.
In connection with its consideration of future renewals of each fund's advisory contracts, the Board will consider: (i) the nature, extent and quality of services provided to the funds, including shareholder and administrative services and investment performance; (ii) the competitiveness of the management fee and total expenses for each fund; (iii) the costs of the services and profitability, including the revenues earned and the expenses incurred in conducting the business of developing, marketing, distributing, managing, administering, and servicing each fund and its shareholders, to the extent applicable; and (iv) whether there have been economies of scale in respect of the Fidelity funds, whether the Fidelity funds (including the funds) have appropriately benefited from any such economies of scale, and whether there is the potential for realization of any further economies.
Based on its evaluation of all of the conclusions noted above, and after considering all factors it believed relevant, the Board concluded that each fund's management fee structure is fair and reasonable, and that the funds' Sub-Advisory Contracts should be approved.
 
Liquidity Risk Management Program
The Securities and Exchange Commission adopted Rule 22e-4 under the Investment Company Act of 1940 (the Liquidity Rule) to promote effective liquidity risk management throughout the open-end investment company industry, thereby reducing the risk that funds will be unable to meet their redemption obligations and mitigating dilution of the interests of fund shareholders.
The Funds have adopted and implemented a liquidity risk management program (the Program) reasonably designed to assess and manage each Fund's liquidity risk and to comply with the requirements of the Liquidity Rule. Each Fund's Board of Trustees (the Board) has designated each Fund's investment adviser as administrator of the Program. The Fidelity advisers have established a Liquidity Risk Management Committee (the LRM Committee) to manage the Program for each of the Fidelity Funds. The LRM Committee monitors the adequacy and effectiveness of implementation of the Program and on a periodic basis assesses each Fund's liquidity risk based on a variety of factors including (1) the Fund's investment strategy, (2) portfolio liquidity and cash flow projections during normal and reasonably foreseeable stressed conditions, (3) shareholder redemptions, (4) borrowings and other funding sources and (5) certain factor specific to ETFs including the effect of the Fund's prices and spreads, market participants, and basket compositions on the overall liquidity of the Fund's portfolio, as applicable. 
In accordance with the Program, each of the Fund's portfolio investments is classified into one of four defined liquidity categories based on a determination of a reasonable expectation for how long it would take to convert the investment to cash (or sell or dispose of the investment) without significantly changing its market value.
Liquidity classification determinations take into account a variety of factors including various market, trading and investment-specific considerations, as well as market depth, and generally utilize analysis from a third-party liquidity metrics service.
The Liquidity Rule places a 15% limit on a fund's illiquid investments and requires funds that do not primarily hold assets that are highly liquid investments to determine and maintain a minimum percentage of the fund's net assets to be invested in highly liquid investments (highly liquid investment minimum or HLIM).  The Program includes provisions reasonably designed to comply with the 15% limit on illiquid investments and for determining, periodically reviewing and complying with the HLIM requirement as applicable.
At a recent meeting of the Fund's Board of Trustees, the LRM Committee provided a written report to the Board pertaining to the operation, adequacy, and effectiveness of the Program for the period December 1, 2022 through November 30, 2023.  The report concluded that the Program is operating effectively and is reasonably designed to assess and manage the Fund's liquidity risk.  
Proxy Voting Results
A special meeting of shareholders was held on October 18, 2023. The results of votes taken among shareholders on the proposal before them are reported below. Each vote reported represents one dollar of net asset value held on the record date for the meeting.
Proposal 1
To elect a Board of Trustees.
 
# of
Votes
% of
Votes
Abigail P. Johnson
Affirmative
378,729,502,260.01
97.58
Withheld
9,407,876,478.96
2.42
TOTAL
388,137,378,738.97
100.00
Jennifer Toolin McAuliffe
Affirmative
378,454,868,010.95
97.51
Withheld
9,682,510,728.02
2.49
TOTAL
388,137,378,738.97
100.00
Christine J. Thompson
Affirmative
378,837,121,274.52
97.60
Withheld
9,300,257,464.45
2.40
TOTAL
388,137,378,738.97
100.00
Elizabeth S. Acton
Affirmative
378,262,110,794.85
97.46
Withheld
9,875,267,944.12
2.54
TOTAL
388,137,378,738.97
100.00
Laura M. Bishop
Affirmative
380,482,113,171.06
98.03
Withheld
7,655,265,567.91
1.97
TOTAL
388,137,378,738.97
100.00
Ann E. Dunwoody
Affirmative
380,016,034,008.12
97.91
Withheld
8,121,344,730.85
2.09
TOTAL
388,137,378,738.97
100.00
John Engler
Affirmative
379,432,488,394.20
97.76
Withheld
8,704,890,344.77
2.24
TOTAL
388,137,378,738.97
100.00
Robert F. Gartland
Affirmative
378,741,819,600.60
97.58
Withheld
9,395,559,138.37
2.42
TOTAL
388,137,378,738.97
100.00
Robert W. Helm
Affirmative
380,389,324,755.07
98.00
Withheld
7,748,053,983.90
2.00
TOTAL
388,137,378,738.97
100.00
Arthur E. Johnson
Affirmative
378,427,694,151.67
97.50
Withheld
9,709,684,587.30
2.50
TOTAL
388,137,378,738.97
100.00
Michael E. Kenneally
Affirmative
377,842,228,145.18
97.35
Withheld
10,295,150,593.79
2.65
TOTAL
388,137,378,738.97
100.00
Mark A. Murray
Affirmative
380,158,432,703.37
97.94
Withheld
7,978,946,035.60
2.06
TOTAL
388,137,378,738.97
100.00
Carol J. Zierhoffer
Affirmative
380,522,113,360.24
98.04
Withheld
7,615,265,378.73
1.96
TOTAL
388,137,378,738.97
100.00
 
 
 
Proposal 1 reflects trust wide proposal and voting results.
 
 
 
1.9885078.106
LBX-I-ANN-0424
Fidelity® Series Long-Term Treasury Bond Index Fund
 
 
Annual Report
February 29, 2024

Contents

Performance

Management's Discussion of Fund Performance

Investment Summary

Schedule of Investments

Financial Statements

Notes to Financial Statements

Report of Independent Registered Public Accounting Firm

Trustees and Officers

Shareholder Expense Example

Distributions

Board Approval of Investment Advisory Contracts

Liquidity Risk Management Program

Proxy Voting Results

To view a fund's proxy voting guidelines and proxy voting record for the 12-month period ended June 30, visit http://www.fidelity.com/proxyvotingresults or visit the Securities and Exchange Commission's (SEC) web site at http://www.sec.gov.
 
 
You may also call 1-800-544-8544 to request a free copy of the proxy voting guidelines.
BLOOMBERG ® is a trademark and service mark of Bloomberg Finance L.P. and its affiliates (collectively "Bloomberg"). Bloomberg or Bloomberg's licensors own all proprietary rights in the Bloomberg Indices. Neither Bloomberg nor Bloomberg's licensors approves or endorses this material, or guarantees the accuracy or completeness of any information herein, or makes any warranty, express or implied, as to the results to be obtained therefrom and, to the maximum extent allowed by law, neither shall have any liability or responsibility for injury or damages arising in connection therewith.
Standard & Poor's, S&P and S&P 500 are registered service marks of The McGraw-Hill Companies, Inc. and have been licensed for use by Fidelity Distributors Corporation.
Other third-party marks appearing herein are the property of their respective owners.
All other marks appearing herein are registered or unregistered trademarks or service marks of FMR LLC or an affiliated company. © 2024 FMR LLC. All rights reserved.
 
This report and the financial statements contained herein are submitted for the general information of the shareholders of the Fund. This report is not authorized for distribution to prospective investors in the Fund unless preceded or accompanied by an effective prospectus.
A fund files its complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. Forms N-PORT are available on the SEC's web site at http://www.sec.gov. A fund's Forms N-PORT may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information regarding the operation of the SEC's Public Reference Room may be obtained by calling 1-800-SEC-0330.
For a complete list of a fund's portfolio holdings, view the most recent holdings listing, semiannual report, or annual report on Fidelity's web site at http://www.fidelity.com, http://www.institutional.fidelity.com, or http://www.401k.com, as applicable.
NOT FDIC INSURED •MAY LOSE VALUE •NO BANK GUARANTEE
Neither the Fund nor Fidelity Distributors Corporation is a bank.
 
Performance: The Bottom Line
Average annual total return reflects the change in the value of an investment, assuming reinvestment of distributions from dividend income and capital gains (the profits earned upon the sale of securities that have grown in value, if any) and assuming a constant rate of performance each year. The hypothetical investment and the average annual total returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. During periods of reimbursement by Fidelity, a fund's total return will be greater than it would be had the reimbursement not occurred. How a fund did yesterday is no guarantee of how it will do tomorrow.
Average Annual Total Returns
 
 
 
 
Periods ended February 29, 2024
 
Past 1
year
Past 5
years
Life of
Fund A
Fidelity® Series Long-Term Treasury Bond Index Fund
-2.77%
-2.07%
-2.67%
 
A   From July 7, 2016
 $10,000 Over Life of Fund
 
Let's say hypothetically that $10,000 was invested in Fidelity® Series Long-Term Treasury Bond Index Fund, on July 7, 2016, when the fund started.
 
The chart shows how the value of your investment would have changed, and also shows how the Bloomberg U.S. Long Treasury Bond Index performed over the same period.
 
Management's Discussion of Fund Performance
Market Recap:
U.S. taxable investment-grade bonds gained 3.33% for the 12 months ending February 29, 2024, as measured by the Bloomberg U.S. Aggregate Bond Index. The advance was driven by a powerful rally in the final two months of 2023, but the 12-month period was marked by high levels of volatility. The early months saw the bond market start to rebound from the historic downturn that began in early 2022, when the U.S. Federal Reserve began an aggressive series of interest rate hikes to combat persistent inflation. The index advanced in March and April of 2023 on optimism the central bank would soon be done with its hiking cycle, only to fall back in each of the next six months, as cooling but still-high inflation and a strong labor market suggested it may need to keep raising rates. Bonds saw particularly sharp sell-offs in September (-2.54%) and October (-1.58%). At its committee meeting in November, though, the Fed struck a new, more optimistic tone, and then in December signaled to the market that, if disinflation trends hold, it expected to begin cutting interest rates in 2024. The index gained 4.53% in November, its best month since the 1980s, and a further 3.83% in December but fell in January (-0.27%) and February (-1.41%) as disinflation stalled. For the full 12 months, short-term bonds outperformed long-term issues, while lower-quality bonds bettered higher-quality debt, and risk assets, including corporate bonds and asset-backed securities, notably outpaced U.S. Treasurys.
Comments from Co-Portfolio Managers Brandon Bettencourt and Richard Munclinger:
For the fiscal year, the fund returned -2.77% versus the -2.83% result of the benchmark, the Bloomberg US Long-Term Treasury Bond Index. These results met our goal of producing monthly returns, before expenses, that closely match the benchmark return. We construct the portfolio using optimization. This approach minimizes the differences between risk exposures of the fund relative to the index. Exposures include duration, key rate durations, and other factors. Treasurys were under pressure throughout much of the past 12 months, particularly summer and early fall 2023, as well as early 2024, amid heightened concern the Fed would hold rates higher and for significantly longer than expected. For the 12 months overall, Treasurys with short durations (less interest rate sensitivity) posted the biggest gains this period, while long-duration Treasurys declined.
 
 
 
The views expressed above reflect those of the portfolio manager(s) only through the end of the period as stated on the cover of this report and do not necessarily represent the views of Fidelity or any other person in the Fidelity organization. Any such views are subject to change at any time based upon market or other conditions and Fidelity disclaims any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Fidelity fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any Fidelity fund.
 
Investment Summary February 29, 2024 (Unaudited)
Coupon Distribution (% of Fund's Investments)
 
1 - 1.99%
11.8
 
2 - 2.99%
39.1
 
3 - 3.99%
32.9
 
4 - 4.99%
14.0
 
5 - 5.99%
0.8
 
 
Coupon distribution shows the range of stated interest rates on the fund's investments, excluding short-term investments.
 
 
Asset Allocation (% of Fund's net assets)
 
Schedule of Investments February 29, 2024
Showing Percentage of Net Assets  
U.S. Government and Government Agency Obligations - 99.0%
 
 
Principal
Amount (a)
 
Value ($)
 
U.S. Treasury Obligations - 99.0%
 
 
 
U.S. Treasury Bonds:
 
 
 
 1.125% 5/15/40
 
54,517,000
33,640,822
 1.125% 8/15/40
 
117,470,000
71,776,005
 1.25% 5/15/50
 
51,868,000
26,343,271
 1.375% 11/15/40
 
821,263,000
521,566,162
 1.375% 8/15/50
 
11,528,000
6,051,299
 1.625% 11/15/50
 
200,693,000
112,709,502
 1.75% 8/15/41
 
455,540,000
303,378,962
 1.875% 2/15/41
 
633,606,000
436,618,883
 1.875% 2/15/51
 
671,205,000
401,805,335
 1.875% 11/15/51
 
729,220,000
434,455,603
 2% 11/15/41
 
915,080,000
633,549,919
 2% 2/15/50
 
424,749,000
264,456,029
 2% 8/15/51
 
861,520,000
530,541,513
 2.25% 5/15/41
 
881,582,000
643,692,607
 2.25% 8/15/46
 
172,941,000
117,464,770
 2.25% 8/15/49
 
311,947,000
206,579,589
 2.25% 2/15/52
 
1,405,440,000
919,355,393
 2.375% 2/15/42
 
1,283,560,000
943,015,487
 2.375% 11/15/49
 
827,992,000
563,519,714
 2.375% 5/15/51
 
635,974,000
429,158,238
 2.5% 2/15/45
 
707,149,000
512,572,533
 2.5% 2/15/46
 
117,718,000
84,490,256
 2.5% 5/15/46
 
136,970,000
98,035,208
 2.75% 8/15/42
 
252,260,000
196,260,250
 2.75% 11/15/42
 
193,274,000
149,764,700
 2.75% 8/15/47
 
458,264,000
340,601,139
 2.75% 11/15/47
 
316,957,000
235,179,619
 2.875% 5/15/43
 
241,482,000
190,063,313
 2.875% 8/15/45
 
36,432,000
28,133,758
 2.875% 11/15/46
 
25,000
19,127
 2.875% 5/15/49
 
634,799,000
479,992,352
 2.875% 5/15/52
 
237,580,000
178,890,316
 3% 5/15/42
 
119,579,000
96,929,056
 3% 11/15/44
 
172,537,000
136,843,408
 3% 5/15/45
 
158,044,000
124,965,884
 3% 11/15/45
 
381,862,000
300,910,238
 3% 2/15/47
 
489,794,000
382,632,431
 3% 5/15/47
 
234,862,000
183,293,278
 3% 2/15/48
 
595,209,000
462,519,242
 3% 8/15/48
 
203,982,000
158,285,251
 3% 2/15/49
 
527,487,000
408,720,005
 3% 8/15/52
 
656,180,000
507,283,532
 3.125% 11/15/41
 
59,163,000
49,255,508
 3.125% 2/15/42
 
154,840,000
128,420,425
 3.125% 2/15/43
 
170,521,000
139,947,117
 3.125% 8/15/44
 
77,966,000
63,252,963
 3.125% 5/15/48
 
306,342,000
243,410,258
 3.25% 5/15/42
 
379,100,000
318,799,406
 3.375% 8/15/42
 
534,560,000
457,174,090
 3.375% 5/15/44
 
122,930,000
103,928,672
 3.375% 11/15/48
 
187,191,000
155,522,085
 3.5% 2/15/39
 
128,034,000
116,490,935
 3.625% 8/15/43
 
393,132,000
346,570,429
 3.625% 2/15/44
 
142,857,000
125,591,392
 3.625% 2/15/53
 
342,780,000
299,691,485
 3.625% 5/15/53
 
790,000,000
691,188,285
 3.75% 8/15/41
 
107,358,000
97,955,788
 3.75% 11/15/43
 
103,069,000
92,407,800
 3.875% 2/15/43
 
264,800,000
242,426,468
 3.875% 5/15/43
 
106,500,000
97,331,021
 4% 11/15/42
 
176,720,000
164,963,978
 4% 11/15/52
 
371,200,000
347,564,998
 4.125% 8/15/53
 
476,900,000
456,557,234
 4.25% 5/15/39
 
7,357,000
7,277,682
 4.25% 11/15/40
 
47,867,000
46,799,341
 4.25% 2/15/54
 
116,700,000
114,511,875
 4.375% 2/15/38
 
82,124,000
83,086,391
 4.375% 11/15/39
 
17,280,000
17,277,300
 4.375% 5/15/40
 
164,823,000
164,237,105
 4.375% 5/15/41
 
84,468,000
83,583,726
 4.375% 8/15/43
 
129,270,000
126,563,409
 4.5% 2/15/36
 
70,718,000
73,182,080
 4.5% 5/15/38
 
29,300,000
29,963,828
 4.5% 8/15/39
 
89,444,000
90,848,550
 4.625% 2/15/40
 
35,743,000
36,720,348
 4.75% 2/15/37
 
35,563,000
37,564,808
 4.75% 2/15/41
 
71,173,000
73,819,746
 4.75% 11/15/43
 
251,100,000
258,397,594
 4.75% 11/15/53
 
536,700,000
570,998,484
 5% 5/15/37
 
151,627,000
163,692,007
 
TOTAL U.S. GOVERNMENT AND GOVERNMENT AGENCY OBLIGATIONS
 (Cost $24,622,863,444)
 
 
 
19,573,038,610
 
 
 
 
Money Market Funds - 1.3%
 
 
Shares
Value ($)
 
Fidelity Cash Central Fund 5.39% (b)
 
 (Cost $253,791,208)
 
 
253,740,460
253,791,208
 
 
 
 
 
TOTAL INVESTMENT IN SECURITIES - 100.3%
 (Cost $24,876,654,652)
 
 
 
19,826,829,818
NET OTHER ASSETS (LIABILITIES) - (0.3)%  
(63,287,437)
NET ASSETS - 100.0%
19,763,542,381
 
 
 
Legend
 
(a)
Amount is stated in United States dollars unless otherwise noted.
 
(b)
Affiliated fund that is generally available only to investment companies and other accounts managed by Fidelity Investments. The rate quoted is the annualized seven-day yield of the fund at period end. A complete unaudited listing of the fund's holdings as of its most recent quarter end is available upon request. In addition, each Fidelity Central Fund's financial statements, which are not covered by the Fund's Report of Independent Registered Public Accounting Firm, are available on the SEC's website or upon request.
 
 
 
Affiliated Central Funds
 
Fiscal year to date information regarding the Fund's investments in Fidelity Central Funds, including the ownership percentage, is presented below.
 
 
Affiliate
Value,
beginning
of period ($)
Purchases ($)
Sales
Proceeds ($)
Dividend
Income ($)
Realized
Gain (loss) ($)
Change in
Unrealized
appreciation
(depreciation) ($)
Value,
end
of period ($)
% ownership,
end
of period
Fidelity Cash Central Fund 5.39%
220,005,277
1,300,110,691
1,266,324,760
6,212,603
-
-
253,791,208
0.5%
Fidelity Securities Lending Cash Central Fund 5.39%
91,383,143
1,163,523,941
1,254,907,084
170,469
-
-
-
0.0%
Total
311,388,420
2,463,634,632
2,521,231,844
6,383,072
-
-
253,791,208
 
 
 
 
 
 
 
 
 
 
Amounts in the dividend income column in the above table include any capital gain distributions from underlying funds, which are presented in the corresponding line item in the Statement of Operations, if applicable.
 
Amounts in the dividend income column for Fidelity Securities Lending Cash Central Fund represents the income earned on investing cash collateral, less rebates paid to borrowers and any lending agent fees associated with the loan, plus any premium payments received for lending certain types of securities.
 
Amounts included in the purchases and sales proceeds columns may include in-kind transactions, if applicable.
 
Investment Valuation
 
The following is a summary of the inputs used, as of February 29, 2024, involving the Fund's assets and liabilities carried at fair value. The inputs or methodology used for valuing securities may not be an indication of the risk associated with investing in those securities. For more information on valuation inputs, and their aggregation into the levels used below, please refer to the Investment Valuation section in the accompanying Notes to Financial Statements.
 
Valuation Inputs at Reporting Date:
Description
Total ($)
Level 1 ($)
Level 2 ($)
Level 3 ($)
 Investments in Securities:
 
 
 
 
 U.S. Government and Government Agency Obligations
19,573,038,610
-
19,573,038,610
-
  Money Market Funds
253,791,208
253,791,208
-
-
 Total Investments in Securities:
19,826,829,818
253,791,208
19,573,038,610
-
Financial Statements
Statement of Assets and Liabilities
 
 
 
 
 
 
 
 
Assets
 
 
 
 
Investment in securities, at value  - See accompanying schedule:
 
 
 
 
Unaffiliated issuers (cost $24,622,863,444)
$
19,573,038,610
 
 
Fidelity Central Funds (cost $253,791,208)
253,791,208
 
 
 
 
 
 
 
 
 
 
 
 
Total Investment in Securities (cost $24,876,654,652)
 
 
$
19,826,829,818
Receivable for fund shares sold
 
 
669,418,688
Interest receivable
 
 
108,229,179
Distributions receivable from Fidelity Central Funds
 
 
806,170
  Total assets
 
 
20,605,283,855
Liabilities
 
 
 
 
Payable for investments purchased
$
673,515,684
 
 
Payable for fund shares redeemed
168,158,347
 
 
Distributions payable
168
 
 
Other payables and accrued expenses
67,275
 
 
  Total Liabilities
 
 
 
841,741,474
Net Assets  
 
 
$
19,763,542,381
Net Assets consist of:
 
 
 
 
Paid in capital
 
 
$
25,948,573,049
Total accumulated earnings (loss)
 
 
 
(6,185,030,668)
Net Assets
 
 
$
19,763,542,381
Net Asset Value, offering price and redemption price per share ($19,763,542,381 ÷ 3,535,367,278 shares)
 
 
$
5.59
Statement of Operations
 
 
 
Year ended
Investment Income
 
 
 
 
Interest  
 
 
$
648,874,780
Income from Fidelity Central Funds (including $170,469 from security lending)
 
 
6,383,072
 Total Income
 
 
 
655,257,852
Expenses
 
 
 
 
Custodian fees and expenses
$
158,186
 
 
Independent trustees' fees and expenses
60,141
 
 
Miscellaneous
86
 
 
 Total expenses before reductions
 
218,413
 
 
 Expense reductions
 
(1,420)
 
 
 Total expenses after reductions
 
 
 
216,993
Net Investment income (loss)
 
 
 
655,040,859
Realized and Unrealized Gain (Loss)
 
 
 
 
Net realized gain (loss) on:
 
 
 
 
 Investment Securities:
 
 
 
 
   Unaffiliated issuers  
 
(724,264,803)
 
 
Total net realized gain (loss)
 
 
 
(724,264,803)
Change in net unrealized appreciation (depreciation) on investment securities
 
 
 
(364,854,037)
Net gain (loss)
 
 
 
(1,089,118,840)
Net increase (decrease) in net assets resulting from operations
 
 
$
(434,077,981)
Statement of Changes in Net Assets
 
 
Year ended
 
Year ended
Increase (Decrease) in Net Assets
 
 
 
 
Operations
 
 
 
Net investment income (loss)
$
655,040,859
$
475,693,836
Net realized gain (loss)
 
(724,264,803)
 
 
(466,967,551)
 
Change in net unrealized appreciation (depreciation)
 
(364,854,037)
 
(4,409,523,731)
 
Net increase (decrease) in net assets resulting from operations
 
(434,077,981)
 
 
(4,400,797,446)
 
Distributions to shareholders
 
(606,523,970)
 
 
(449,770,175)
 
 
 
 
 
 
Share transactions
 
 
 
 
Proceeds from sales of shares
 
5,632,851,217
 
9,182,425,036
  Reinvestment of distributions
 
606,520,433
 
 
449,255,711
 
Cost of shares redeemed
 
(2,980,965,139)
 
(2,364,393,486)
 
 
 
 
 
  Net increase (decrease) in net assets resulting from share transactions
 
3,258,406,511
 
 
7,267,287,261
 
Total increase (decrease) in net assets
 
2,217,804,560
 
 
2,416,719,640
 
 
 
 
 
 
Net Assets
 
 
 
 
Beginning of period
 
17,545,737,821
 
15,129,018,181
 
End of period
$
19,763,542,381
$
17,545,737,821
 
 
 
 
 
Other Information
 
 
 
 
Shares
 
 
 
 
Sold
 
993,209,134
 
1,373,818,678
  Issued in reinvestment of distributions
 
106,407,571
 
 
71,082,578
 
Redeemed
 
(517,708,239)
 
(369,851,700)
Net increase (decrease)
 
581,908,466
 
1,075,049,556
 
 
 
 
 
 
Financial Highlights
Fidelity® Series Long-Term Treasury Bond Index Fund
 
Years ended February 28,
 
2024 A 
 
2023 
 
2022  
 
2021 
 
2020 A
  Selected Per-Share Data 
 
 
 
 
 
 
 
 
 
 
  Net asset value, beginning of period
$
5.94
$
8.05
$
8.33
$
10.06
$
8.43
  Income from Investment Operations
 
 
 
 
 
 
 
 
 
 
     Net investment income (loss) B,C
 
.202
 
.185
 
.175
 
.201
 
.249
     Net realized and unrealized gain (loss)
 
(.365)
 
(2.121)
 
(.253)
 
(.752)
 
2.319
  Total from investment operations
 
(.163)  
 
(1.936)  
 
(.078)  
 
(.551)  
 
2.568
  Distributions from net investment income
 
(.187)
 
(.174)
 
(.169)
 
(.199)
 
(.243)
  Distributions from net realized gain
 
-
 
-
 
(.033)
 
(.980)
 
(.695)
     Total distributions
 
(.187)
 
(.174)
 
(.202)
 
(1.179)
 
(.938)
  Net asset value, end of period
$
5.59
$
5.94
$
8.05
$
8.33
$
10.06
 Total Return D
 
(2.77)%
 
(24.16)%
 
(1.01)%
 
(6.47)%
 
31.91%
 Ratios to Average Net Assets C,E,F
 
 
 
 
 
 
 
 
 
 
    Expenses before reductions G
 
-%
 
-%
 
-%
 
-%
 
-%
    Expenses net of fee waivers, if any G
 
-%
 
-%
 
-%
 
-%
 
-%
    Expenses net of all reductions G
 
-%
 
-%
 
-%
 
-%
 
-%
    Net investment income (loss)
 
3.53%
 
2.87%
 
2.10%
 
2.03%
 
2.68%
 Supplemental Data
 
 
 
 
 
 
 
 
 
 
    Net assets, end of period (000 omitted)
$
19,763,542
$
17,545,738
$
15,129,018
$
9,356,431
$
7,414,223
    Portfolio turnover rate H
 
11%
 
10%
 
18%
 
56%
 
33% I
 
AFor the year ended February 29.
 
BCalculated based on average shares outstanding during the period.
 
CNet investment income (loss) is affected by the timing of the declaration of dividends by any underlying mutual funds or exchange-traded funds (ETFs). Net investment income (loss) of any mutual funds or ETFs is not included in the Fund's net investment income (loss) ratio.
 
DTotal returns would have been lower if certain expenses had not been reduced during the applicable periods shown.
 
EFees and expenses of any underlying mutual funds or exchange-traded funds (ETFs) are not included in the Fund's expense ratio. The Fund indirectly bears its proportionate share of these expenses. For additional expense information related to investments in Fidelity Central Funds, please refer to the "Investments in Fidelity Central Funds" note found in the Notes to Financial Statements section of the most recent Annual or Semi-Annual report.
 
FExpense ratios reflect operating expenses of the class. Expenses before reductions do not reflect amounts reimbursed, waived, or reduced through arrangements with the investment adviser, brokerage services, or other offset arrangements, if applicable, and do not represent the amount paid by the class during periods when reimbursements, waivers or reductions occur.
 
GAmount represents less than .005%.
 
HAmount does not include the portfolio activity of any underlying mutual funds or exchange-traded funds (ETFs).
 
IPortfolio turnover rate excludes securities received or delivered in-kind.
 
Notes to Financial Statements
For the period ended February 29, 2024
 
1. Organization.
Fidelity Series Long-Term Treasury Bond Index Fund (the Fund) is a fund of Fidelity Salem Street Trust (the Trust) and is authorized to issue an unlimited number of shares. Shares are offered only to certain other Fidelity funds, Fidelity managed 529 plans, and Fidelity managed collective investment trusts. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Massachusetts business trust.
2. Investments in Fidelity Central Funds.
Funds may invest in Fidelity Central Funds, which are open-end investment companies generally available only to other investment companies and accounts managed by the investment adviser and its affiliates. The Schedule of Investments lists any Fidelity Central Funds held as an investment as of period end, but does not include the underlying holdings of each Fidelity Central Fund. An investing fund indirectly bears its proportionate share of the expenses of the underlying Fidelity Central Funds.
 
Based on its investment objective, each Fidelity Central Fund may invest or participate in various investment vehicles or strategies that are similar to those of the investing fund. These strategies are consistent with the investment objectives of the investing fund and may involve certain economic risks which may cause a decline in value of each of the Fidelity Central Funds and thus a decline in the value of the investing fund.
 
Fidelity Central Fund
Investment Manager
Investment Objective
Investment Practices
Expense RatioA
Fidelity Money Market Central Funds
Fidelity Management & Research Company LLC (FMR)
Each fund seeks to obtain a high level of current income consistent with the preservation of capital and liquidity.
Short-term Investments
Less than .005%
 
A Expenses expressed as a percentage of average net assets and are as of each underlying Central Fund's most recent annual or semi-annual shareholder report.
 
A complete unaudited list of holdings for each Fidelity Central Fund is available upon request or at the Securities and Exchange Commission website at www.sec.gov. In addition, the financial statements of the Fidelity Central Funds which contain the significant accounting policies (including investment valuation policies) of those funds, and are not covered by the Report of Independent Registered Public Accounting Firm, are available on the Securities and Exchange Commission website or upon request.
3. Significant Accounting Policies.
The Fund is an investment company and applies the accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies. The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP), which require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from those estimates. Subsequent events, if any, through the date that the financial statements were issued have been evaluated in the preparation of the financial statements. The Fund's Schedule of Investments lists any underlying mutual funds or exchange-traded funds (ETFs) but does not include the underlying holdings of these funds. The following summarizes the significant accounting policies of the Fund:
 
Investment Valuation. Investments are valued as of 4:00 p.m. Eastern time on the last calendar day of the period. The Board of Trustees (the Board) has designated the Fund's investment adviser as the valuation designee responsible for the fair valuation function and performing fair value determinations as needed. The investment adviser has established a Fair Value Committee (the Committee) to carry out the day-to-day fair valuation responsibilities and has adopted policies and procedures to govern the fair valuation process and the activities of the Committee. In accordance with these fair valuation policies and procedures, which have been approved by the Board, the Fund attempts to obtain prices from one or more third party pricing services or brokers to value its investments. When current market prices, quotations or currency exchange rates are not readily available or reliable, investments will be fair valued in good faith by the Committee, in accordance with the policies and procedures. Factors used in determining fair value vary by investment type and may include market or investment specific events, transaction data, estimated cash flows, and market observations of comparable investments. The frequency that the fair valuation procedures are used cannot be predicted and they may be utilized to a significant extent. The Committee manages the Fund's fair valuation practices and maintains the fair valuation policies and procedures. The Fund's investment adviser reports to the Board information regarding the fair valuation process and related material matters.
 
The Fund categorizes the inputs to valuation techniques used to value its investments into a disclosure hierarchy consisting of three levels as shown below:
 
Level 1 - unadjusted quoted prices in active markets for identical investments
Level 2 - other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, etc.)
Level 3 - unobservable inputs (including the Fund's own assumptions based on the best information available)
 
Valuation techniques used to value the Fund's investments by major category are as follows:
 
Debt securities, including restricted securities, are valued based on evaluated prices received from third party pricing services or from brokers who make markets in such securities. U.S. government and government agency obligations are valued by pricing services who utilize matrix pricing which considers yield or price of bonds of comparable quality, coupon, maturity and type or by broker-supplied prices. When independent prices are unavailable or unreliable, debt securities may be valued utilizing pricing methodologies which consider similar factors that would be used by third party pricing services. Debt securities are generally categorized as Level 2 in the hierarchy but may be Level 3 depending on the circumstances.
 
Investments in open-end mutual funds, including the Fidelity Central Funds, are valued at their closing net asset value (NAV) each business day and are categorized as Level 1 in the hierarchy.
 
Changes in valuation techniques may result in transfers in or out of an assigned level within the disclosure hierarchy. The aggregate value of investments by input level as of February 29, 2024 is included at the end of the Fund's Schedule of Investments.
 
 
Investment Transactions and Income. For financial reporting purposes, the Fund's investment holdings and NAV include trades executed through the end of the last business day of the period. The NAV per share for processing shareholder transactions is calculated as of the close of business of the New York Stock Exchange (NYSE), normally 4:00 p.m. Eastern time and includes trades executed through the end of the prior business day. Gains and losses on securities sold are determined on the basis of identified cost. Income and capital gain distributions from Fidelity Central Funds, if any, are recorded on the ex-dividend date. Interest income is accrued as earned and includes coupon interest and amortization of premium and accretion of discount on debt securities as applicable.
 
Expenses. Expenses directly attributable to a fund are charged to that fund. Expenses attributable to more than one fund are allocated among the respective funds on the basis of relative net assets or other appropriate methods. Expenses included in the accompanying financial statements reflect the expenses of that fund and do not include any expenses associated with any underlying mutual funds or exchange-traded funds. Although not included in a fund's expenses, a fund indirectly bears its proportionate share of these expenses through the net asset value of each underlying mutual fund or exchange-traded fund. Expense estimates are accrued in the period to which they relate and adjustments are made when actual amounts are known.
 
Income Tax Information and Distributions to Shareholders. Each year, the Fund intends to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code, including distributing substantially all of its taxable income and realized gains. As a result, no provision for U.S. Federal income taxes is required. As of February 29, 2024, the Fund did not have any unrecognized tax benefits in the financial statements; nor is the Fund aware of any tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. The Fund files a U.S. federal tax return, in addition to state and local tax returns as required. The Fund's federal income tax returns are subject to examination by the Internal Revenue Service (IRS) for a period of three fiscal years after they are filed. State and local tax returns may be subject to examination for an additional fiscal year depending on the jurisdiction.
 
Distributions are declared and recorded daily and paid monthly from net investment income. Distributions from realized gains, if any, are declared and recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP.
 
Capital accounts within the financial statements are adjusted for permanent book-tax differences. These adjustments have no impact on net assets or the results of operations. Capital accounts are not adjusted for temporary book-tax differences which will reverse in a subsequent period.
 
Book-tax differences are primarily due to market discount, capital loss carryforwards and losses deferred due to wash sales.
As of period end, the cost and unrealized appreciation (depreciation) in securities, and derivatives if applicable, for federal income tax purposes were as follows:
 
Gross unrealized appreciation
$88,614,740
Gross unrealized depreciation
(5,091,117,721)
Net unrealized appreciation (depreciation)
$(5,002,502,981)
Tax Cost
$24,829,332,799
 
The tax-based components of distributable earnings as of period end were as follows:
 
Capital loss carryforward
$(1,178,409,167)
Net unrealized appreciation (depreciation) on securities and other investments
$(5,002,502,981)
 
Capital loss carryforwards are only available to offset future capital gains of the Fund to the extent provided by regulations and may be limited. The capital loss carryforward information presented below, including any applicable limitation, is estimated as of fiscal period end and is subject to adjustment.
 
 Short-term
$(183,630,013)
 Long-term
(994,779,154)
Total capital loss carryforward
$(1,178,409,167)
 
The tax character of distributions paid was as follows:
 
 
Ordinary Income
$606,523,970
$ 449,770,175
4. Fees and Other Transactions with Affiliates.
Management Fee. Fidelity Management & Research Company LLC (the investment adviser) and its affiliates provide the Fund with investment management related services for which the Fund does not pay a management fee. Under the management contract, the investment adviser or an affiliate pays all ordinary operating expenses of the Fund, except custody fees, fees and expenses of the independent Trustees, and certain miscellaneous expenses such as proxy and shareholder meeting expenses.
 
Interfund Trades. Funds may purchase from or sell securities to other Fidelity Funds under procedures adopted by the Board. The procedures have been designed to ensure these interfund trades are executed in accordance with Rule 17a-7 of the 1940 Act. Any interfund trades are included within the respective purchases and sales amounts shown in the Purchases and Sales of Investments note. During the period, there were no interfund trades.
 
Subsequent Event - Sub-Advisory Arrangements. Effective March 1, 2024, the Fund's sub-advisory agreements with FMR Investment Management (UK) Limited, Fidelity Management & Research (Hong Kong) Limited, and Fidelity Management & Research (Japan) Limited will be amended to provide that the investment adviser will pay each sub-adviser monthly fees equal to 110% of the sub-adviser's costs for providing sub-advisory services.
5. Committed Line of Credit.
Certain Funds participate with other funds managed by the investment adviser or an affiliate in a $4.25 billion credit facility (the "line of credit") to be utilized for temporary or emergency purposes to fund shareholder redemptions or for other short-term liquidity purposes. The commitment fees on the pro-rata portion of the line of credit are borne by the investment adviser. During the period, there were no borrowings on this line of credit.
6. Security Lending.
Funds lend portfolio securities from time to time in order to earn additional income. Lending agents are used, including National Financial Services (NFS), an affiliate of the investment adviser. Pursuant to a securities lending agreement, NFS will receive a fee, which is capped at 9.9% of a fund's daily lending revenue, for its services as lending agent. A fund may lend securities to certain qualified borrowers, including NFS. On the settlement date of the loan, a fund receives collateral (in the form of U.S. Treasury obligations, letters of credit and/or cash) against the loaned securities and maintains collateral in an amount not less than 100% of the market value of the loaned securities during the period of the loan. The market value of the loaned securities is determined at the close of business of a fund and any additional required collateral is delivered to a fund on the next business day. A fund or borrower may terminate the loan at any time, and if the borrower defaults on its obligation to return the securities loaned because of insolvency or other reasons, a fund may apply collateral received from the borrower against the obligation. A fund may experience delays and costs in recovering the securities loaned. Any cash collateral received is invested in the Fidelity Securities Lending Cash Central Fund. Any loaned securities are identified as such in the Schedule of Investments, and the value of loaned securities and cash collateral at period end, as applicable, are presented in the Statement of Assets and Liabilities. Security lending income represents the income earned on investing cash collateral, less rebates paid to borrowers and any lending agent fees associated with the loan, plus any premium payments received for lending certain types of securities. Security lending income is presented in the Statement of Operations as a component of income from Fidelity Central Funds. Affiliated security lending activity, if any, was as follows:
 
 
Total Security Lending Fees Paid to NFS
Security Lending Income From Securities Loaned to NFS
Value of Securities Loaned to NFS at Period End
Fidelity Series Long-Term Treasury Bond Index Fund
$18,474
$-
$-
7. Expense Reductions.
Through arrangements with the Fund's custodian, credits realized as a result of certain uninvested cash balances were used to reduce the Fund's expenses by $1,420.
8. Other.
A fund's organizational documents provide former and current trustees and officers with a limited indemnification against liabilities arising in connection with the performance of their duties to the fund. In the normal course of business, a fund may also enter into contracts that provide general indemnifications. A fund's maximum exposure under these arrangements is unknown as this would be dependent on future claims that may be made against a fund. The risk of material loss from such claims is considered remote.
 
At the end of the period, mutual funds and accounts managed by the investment adviser or its affiliates were the owners of record of all of the outstanding shares of the Fund.
9. Risk and Uncertainties.
Many factors affect a fund's performance. Developments that disrupt global economies and financial markets, such as pandemics, epidemics, outbreaks of infectious diseases, war, terrorism, and environmental disasters, may significantly affect a fund's investment performance. The effects of these developments to a fund will be impacted by the types of securities in which a fund invests, the financial condition, industry, economic sector, and geographic location of an issuer, and a fund's level of investment in the securities of that issuer. Significant concentrations in security types, issuers, industries, sectors, and geographic locations may magnify the factors that affect a fund's performance.
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Fidelity Salem Street Trust and Shareholders of Fidelity Series Long-Term Treasury Bond Index Fund
Opinion on the Financial Statements
We have audited the accompanying statement of assets and liabilities, including the schedule of investments, of Fidelity Series Long-Term Treasury Bond Index Fund (one of the funds constituting Fidelity Salem Street Trust, referred to hereafter as the "Fund") as of February 29, 2024, the related statement of operations for the year ended February 29, 2024, the statement of changes in net assets for each of the two years in the period ended February 29, 2024, including the related notes, and the financial highlights for each of the five years in the period ended February 29, 2024 (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund as of February 29, 2024, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period ended February 29, 2024 and the financial highlights for each of the five years in the period ended February 29, 2024 in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Fund's management. Our responsibility is to express an opinion on the Fund's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of February 29, 2024 by correspondence with the custodian and brokers; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.
/s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
April 15, 2024
We have served as the auditor of one or more investment companies in the Fidelity group of funds since 1932.
Trustees and Officers
TRUSTEES AND OFFICERS
The Trustees, Members of the Advisory Board (if any), and officers of the trust and fund, as applicable, are listed below. The Board of Trustees governs the fund and is responsible for protecting the interests of shareholders. The Trustees are experienced executives who meet periodically throughout the year to oversee the fund's activities, review contractual arrangements with companies that provide services to the fund, oversee management of the risks associated with such activities and contractual arrangements, and review the fund's performance. Except for Jonathan Chiel, each of the Trustees oversees 315 funds. Mr. Chiel oversees 192 funds.
The Trustees hold office without limit in time except that (a) any Trustee may resign; (b) any Trustee may be removed by written instrument, signed by at least two-thirds of the number of Trustees prior to such removal; (c) any Trustee who requests to be retired or who has become incapacitated by illness or injury may be retired by written instrument signed by a majority of the other Trustees; and (d) any Trustee may be removed at any special meeting of shareholders by a two-thirds vote of the outstanding voting securities of the trust. Each Trustee who is not an interested person (as defined in the 1940 Act) of the trust and the fund is referred to herein as an Independent Trustee. Each Independent Trustee shall retire not later than the last day of the calendar year in which his or her 75th birthday occurs. The Independent Trustees may waive this mandatory retirement age policy with respect to individual Trustees. Officers and Advisory Board Members hold office without limit in time, except that any officer or Advisory Board Member may resign or may be removed by a vote of a majority of the Trustees at any regular meeting or any special meeting of the Trustees. Except as indicated, each individual has held the office shown or other offices in the same company for the past five years.
The fund's Statement of Additional Information (SAI) includes more information about the Trustees. To request a free copy, call Fidelity at 1-800-544-8544.
Experience, Skills, Attributes, and Qualifications of the Trustees. The Governance and Nominating Committee has adopted a statement of policy that describes the experience, qualifications, attributes, and skills that are necessary and desirable for potential Independent Trustee candidates (Statement of Policy). The Board believes that each Trustee satisfied at the time he or she was initially elected or appointed a Trustee, and continues to satisfy, the standards contemplated by the Statement of Policy. The Governance and Nominating Committee also engages professional search firms to help identify potential Independent Trustee candidates who have the experience, qualifications, attributes, and skills consistent with the Statement of Policy. From time to time, additional criteria based on the composition and skills of the current Independent Trustees, as well as experience or skills that may be appropriate in light of future changes to board composition, business conditions, and regulatory or other developments, have also been considered by the professional search firms and the Governance and Nominating Committee. In addition, the Board takes into account the Trustees' commitment and participation in Board and committee meetings, as well as their leadership of standing and ad hoc committees throughout their tenure.
In determining that a particular Trustee was and continues to be qualified to serve as a Trustee, the Board has considered a variety of criteria, none of which, in isolation, was controlling. The Board believes that, collectively, the Trustees have balanced and diverse experience, qualifications, attributes, and skills, which allow the Board to operate effectively in governing the fund and protecting the interests of shareholders. Information about the specific experience, skills, attributes, and qualifications of each Trustee, which in each case led to the Board's conclusion that the Trustee should serve (or continue to serve) as a trustee of the fund, is provided below.
Board Structure and Oversight Function. Abigail P. Johnson is an interested person and currently serves as Chairman. The Trustees have determined that an interested Chairman is appropriate and benefits shareholders because an interested Chairman has a personal and professional stake in the quality and continuity of services provided to the fund. Independent Trustees exercise their informed business judgment to appoint an individual of their choosing to serve as Chairman, regardless of whether the Trustee happens to be independent or a member of management. The Independent Trustees have determined that they can act independently and effectively without having an Independent Trustee serve as Chairman and that a key structural component for assuring that they are in a position to do so is for the Independent Trustees to constitute a substantial majority for the Board. The Independent Trustees also regularly meet in executive session. Michael E. Kenneally serves as Chairman of the Independent Trustees and as such (i) acts as a liaison between the Independent Trustees and management with respect to matters important to the Independent Trustees and (ii) with management prepares agendas for Board meetings.
Fidelity® funds are overseen by different Boards of Trustees. The fund's Board oversees Fidelity's investment-grade bond, money market, asset allocation and certain equity funds, and other Boards oversee Fidelity's alternative investment, high income and other equity funds. The asset allocation funds may invest in Fidelity® funds that are overseen by such other Boards. The use of separate Boards, each with its own committee structure, allows the Trustees of each group of Fidelity® funds to focus on the unique issues of the funds they oversee, including common research, investment, and operational issues. On occasion, the separate Boards establish joint committees to address issues of overlapping consequences for the Fidelity® funds overseen by each Board.
The Trustees operate using a system of committees to facilitate the timely and efficient consideration of all matters of importance to the Trustees, the fund, and fund shareholders and to facilitate compliance with legal and regulatory requirements and oversight of the fund's activities and associated risks. The Board, acting through its committees, has charged FMR and its affiliates with (i) identifying events or circumstances the occurrence of which could have demonstrably adverse effects on the fund's business and/or reputation; (ii) implementing processes and controls to lessen the possibility that such events or circumstances occur or to mitigate the effects of such events or circumstances if they do occur; and (iii) creating and maintaining a system designed to evaluate continuously business and market conditions in order to facilitate the identification and implementation processes described in (i) and (ii) above. Because the day-to-day operations and activities of the fund are carried out by or through FMR, its affiliates, and other service providers, the fund's exposure to risks is mitigated but not eliminated by the processes overseen by the Trustees. While each of the Board's committees has responsibility for overseeing different aspects of the fund's activities, oversight is exercised primarily through the Operations and Audit Committees. In addition, an ad hoc Board committee of Independent Trustees has worked with FMR to enhance the Board's oversight of investment and financial risks, legal and regulatory risks, technology risks, and operational risks, including the development of additional risk reporting to the Board. Appropriate personnel, including but not limited to the fund's Chief Compliance Officer (CCO), FMR's internal auditor, the independent accountants, the fund's Treasurer and portfolio management personnel, make periodic reports to the Board's committees, as appropriate, including an annual review of Fidelity's risk management program for the Fidelity® funds. The responsibilities of each standing committee, including their oversight responsibilities, are described further under "Standing Committees of the Trustees."
Interested Trustees*:
Correspondence intended for a Trustee who is an interested person may be sent to Fidelity Investments, 245 Summer Street, Boston, Massachusetts 02210.
Name, Year of Birth; Principal Occupations and Other Relevant Experience+
Jonathan Chiel (1957)
Year of Election or Appointment: 2016
Trustee
Mr. Chiel also serves as Trustee of other Fidelity® funds. Mr. Chiel is Senior Counsel at Fidelity Investments (diversified financial services company, 2024-present). Previously, Mr. Chiel served as General Counsel (2012-2024) and Head of Legal, Risk and Compliance (2022-2024) for Fidelity Investments; Executive Vice President and General Counsel for FMR LLC (diversified financial services company, 2012-2024); Director and President of OH Company LLC (holding company, 2018-2024); General Counsel (2004-2012) and Senior Vice President and Deputy General Counsel (2000-2004) for John Hancock Financial Services; a partner with Choate, Hall & Stewart (law firm, 1996-2000); and an Assistant United States Attorney for the United States Attorney's Office of the District of Massachusetts (1986-1995), including Chief of the Criminal Division (1993-1995). Mr. Chiel is a director on the boards of the Harvard Law School Center on the Legal Profession and the U.S. Chamber Litigation Center.
Abigail P. Johnson (1961)
Year of Election or Appointment: 2009
Trustee
Chairman of the Board of Trustees
Ms. Johnson also serves as Trustee of other Fidelity® funds. Ms. Johnson serves as Chairman (2016-present), Chief Executive Officer (2014-present), and Director (2007-present) of FMR LLC (diversified financial services company), President of Fidelity Financial Services (2012-present) and President of Personal, Workplace and Institutional Services (2005-present). Ms. Johnson is Chairman and Director of Fidelity Management & Research Company LLC (investment adviser firm, 2011-present). Previously, Ms. Johnson served as Chairman and Director of FMR Co., Inc. (investment adviser firm, 2011-2019), Vice Chairman (2007-2016) and President (2013-2016) of FMR LLC, President and a Director of Fidelity Management & Research Company (2001-2005), a Trustee of other investment companies advised by Fidelity Management & Research Company, Fidelity Investments Money Management, Inc. (investment adviser firm), and FMR Co., Inc. (2001-2005), Senior Vice President of the Fidelity® funds (2001-2005), and managed a number of Fidelity® funds.
Jennifer Toolin McAuliffe (1959)
Year of Election or Appointment: 2016
Trustee
Ms. McAuliffe also serves as Trustee of other Fidelity® funds and as Trustee of Fidelity Charitable (2020-present). Previously, Ms. McAuliffe served as Co-Head of Fixed Income of Fidelity Investments Limited (now known as FIL Limited (FIL)) (diversified financial services company), Director of Research for FIL's credit and quantitative teams in London, Hong Kong and Tokyo and Director of Research for taxable and municipal bonds at Fidelity Investments Money Management, Inc. Ms. McAuliffe previously served as a member of the Advisory Board of certain Fidelity® funds (2016). Ms. McAuliffe was previously a lawyer at Ropes & Gray LLP and an international banker at Chemical Bank NA (now JPMorgan Chase & Co.). Ms. McAuliffe also currently serves as director or trustee of several not-for-profit entities.
Christine J. Thompson (1958)
Year of Election or Appointment: 2023
Trustee
Ms. Thompson also serves as a Trustee of other Fidelity® funds. Ms. Thompson serves as Leader of Advanced Technologies for Investment Management at Fidelity Investments (2018-present). Previously, Ms. Thompson served as Chief Investment Officer in the Bond group at Fidelity Management & Research Company (2010-2018) and held various other roles including Director of municipal bond portfolio managers and Portfolio Manager of certain Fidelity® funds.
* Determined to be an "Interested Trustee" by virtue of, among other things, his or her affiliation with the trust or various entities under common control with FMR.
+ The information includes the Trustee's principal occupation during the last five years and other information relating to the experience, attributes, and skills relevant to the Trustee's qualifications to serve as a Trustee, which led to the conclusion that the Trustee should serve as a Trustee for the fund.
Independent Trustees:
Correspondence intended for an Independent Trustee may be sent to Fidelity Investments, P.O. Box 55235, Boston, Massachusetts 02205-5235.
Name, Year of Birth; Principal Occupations and Other Relevant Experience+
Elizabeth S. Acton (1951)
Year of Election or Appointment: 2013
Trustee
Ms. Acton also serves as Trustee of other Fidelity® funds. Prior to her retirement, Ms. Acton served as Executive Vice President, Finance (2011-2012), Executive Vice President, Chief Financial Officer (2002-2011) and Treasurer (2004-2005) of Comerica Incorporated (financial services). Prior to joining Comerica, Ms. Acton held a variety of positions at Ford Motor Company (1983-2002), including Vice President and Treasurer (2000-2002) and Executive Vice President and Chief Financial Officer of Ford Motor Credit Company (1998-2000). Ms. Acton currently serves as a member of the Board and Audit and Finance Committees of Beazer Homes USA, Inc. (homebuilding, 2012-present). Ms. Acton previously served as a member of the Advisory Board of certain Fidelity® funds (2013-2016).
Laura M. Bishop (1961)
Year of Election or Appointment: 2023
Trustee
Ms. Bishop also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Prior to her retirement, Ms. Bishop held a variety of positions at United Services Automobile Association (2001-2020), including Executive Vice President and Chief Financial Officer (2014-2020) and Senior Vice President and Deputy Chief Financial Officer (2012-2014). Ms. Bishop currently serves as a member of the Audit Committee and Compensation and Personnel Committee (2021-present) of the Board of Directors of Korn Ferry (global organizational consulting). Previously, Ms. Bishop served as a Member of the Advisory Board of certain Fidelity® funds (2022-2023).    
Ann E. Dunwoody (1953)
Year of Election or Appointment: 2018
Trustee
General Dunwoody also serves as Trustee of other Fidelity® funds. General Dunwoody (United States Army, Retired) was the first woman in U.S. military history to achieve the rank of four-star general and prior to her retirement in 2012 held a variety of positions within the U.S. Army, including Commanding General, U.S. Army Material Command (2008-2012). General Dunwoody currently serves as a member of the Board, Chair of Nomination Committee and a member of the Corporate Governance Committee of Kforce Inc. (professional staffing services, 2016-present) and a member of the Board of Automattic Inc. (software engineering, 2018-present). Previously, General Dunwoody served as President of First to Four LLC (leadership and mentoring services, 2012-2022), a member of the Advisory Board and Nominating and Corporate Governance Committee of L3 Technologies, Inc. (communication, electronic, sensor and aerospace systems, 2013-2019) and a member of the Board and Audit and Sustainability and Corporate Responsibility Committees of Republic Services, Inc. (waste collection, disposal and recycling, 2013-2016). General Dunwoody also serves on several boards for non-profit organizations, including as a member of the Board, Chair of the Nomination and Governance Committee and a member of the Audit Committee of the Noble Reach Foundation (formerly Logistics Management Institute) (consulting non-profit, 2012-present) and a member of the Board of ThanksUSA (military family education non-profit, 2014-present). Previously, General Dunwoody served as a member of the Board of Florida Institute of Technology (2015-2022) and a member of the Council of Trustees for the Association of the United States Army (advocacy non-profit, 2013-2021). General Dunwoody previously served as a member of the Advisory Board of certain Fidelity® funds (2018).
Robert F. Gartland (1951)
Year of Election or Appointment: 2010
Trustee
Mr. Gartland also serves as Trustee of other Fidelity® funds. Prior to his retirement, Mr. Gartland held a variety of positions at Morgan Stanley (financial services, 1979-2007), including Managing Director (1987-2007) and Chase Manhattan Bank (1975-1978). Mr. Gartland previously served as Chairman and an investor in Gartland & Mellina Group Corp. (consulting, 2009-2019), as a member of the Board of National Securities Clearing Corporation (1993-1996) and as Chairman of TradeWeb (2003-2004).
Robert W. Helm (1957)
Year of Election or Appointment: 2023
Trustee
Mr. Helm also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Mr. Helm was formerly Deputy Chairman (2003-2020), partner (1991-2020) and an associate (1984-1991) of Dechert LLP (formerly Dechert Price & Rhoads). Mr. Helm currently serves on boards and committees of several not-for-profit organizations, including as a Trustee and member of the Executive Committee of the Baltimore Council on Foreign Affairs, a member of the Board of Directors of the St. Vincent de Paul Society of Baltimore and a member of the Life Guard Society of Mt. Vernon. Previously, Mr. Helm served as a Member of the Advisory Board of certain Fidelity® funds (2021-2023).     
Michael E. Kenneally (1954)
Year of Election or Appointment: 2009
Trustee
Chairman of the Independent Trustees
Mr. Kenneally also serves as Trustee of other Fidelity® funds and was Vice Chairman (2018-2021) of the Independent Trustees of certain Fidelity® funds. Prior to retirement in 2005, he was Chairman and Global Chief Executive Officer of Credit Suisse Asset Management, the worldwide fund management and institutional investment business of Credit Suisse Group. Previously, Mr. Kenneally was an Executive Vice President and the Chief Investment Officer for Bank of America. In this role, he was responsible for the investment management, strategy and products delivered to the bank's institutional, high-net-worth and retail clients. Earlier, Mr. Kenneally directed the organization's equity and quantitative research groups. He began his career as a research analyst and then spent more than a dozen years as a portfolio manager for endowments, pension plans and mutual funds. He earned the Chartered Financial Analyst (CFA) designation in 1991.     
Mark A. Murray (1954)
Year of Election or Appointment: 2016
Trustee
Mr. Murray also serves as Trustee of other Fidelity® funds. Previously, Mr. Murray served as Co-Chief Executive Officer (2013-2016), President (2006-2013) and Vice Chairman (2013-2020) of Meijer, Inc. Mr. Murray serves as a member of the Board (2009-present) and Public Policy and Responsibility Committee (2009-present) and Chair of the Nuclear Review Committee (2019-present) of DTE Energy Company (diversified energy company). Mr. Murray previously served as a member of the Board of Spectrum Health (not-for-profit health system, 2015-2019) and as a member of the Board and Audit Committee and Chairman of the Nominating and Corporate Governance Committee of Universal Forest Products, Inc. (manufacturer and distributor of wood and wood-alternative products, 2004-2016). Mr. Murray also serves as a member of the Board of many community and professional organizations. Mr. Murray previously served as a member of the Advisory Board of certain Fidelity® funds (2016).
Carol J. Zierhoffer (1960)
Year of Election or Appointment: 2023
Trustee
Ms. Zierhoffer also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Prior to her retirement, Ms. Zierhoffer held a variety of positions at Bechtel Corporation (engineering company, 2013-2019), including Principal Vice President and Chief Information Officer (2013-2016) and Senior Vice President and Chief Information Officer (2016-2019). Ms. Zierhoffer currently serves as a member of the Board of Directors, Audit Committee and Compensation Committee of Allscripts Healthcare Solutions, Inc. (healthcare technology, 2020-present) and as a member of the Board of Directors, Audit and Finance Committee and Nominating and Governance Committee of Atlas Air Worldwide Holdings, Inc. (aviation operating services, 2021-present). Previously, Ms. Zierhoffer served as a member of the Board of Directors and Audit Committee and as the founding Chair of the Information Technology Committee of MedAssets, Inc. (healthcare technology, 2013-2016), and as a Member of the Advisory Board of certain Fidelity® funds (2023).    
+ The information includes the Trustee's principal occupation during the last five years and other information relating to the experience, attributes, and skills relevant to the Trustee's qualifications to serve as a Trustee, which led to the conclusion that the Trustee should serve as a Trustee for the fund.
Advisory Board Members and Officers:
Correspondence intended for a Member of the Advisory Board (if any) may be sent to Fidelity Investments, P.O. Box 55235, Boston, Massachusetts 02205-5235. Correspondence intended for an officer may be sent to Fidelity Investments, 245 Summer Street, Boston, Massachusetts 02210.
Name, Year of Birth; Principal Occupations+
Lester Owens (1957)
Year of Election or Appointment: 2024
Member of the Advisory Board
Mr. Owens also serves as a Member of the Advisory Board of other Fidelity® funds. Prior to his retirement, Mr. Owens served as Senior Executive Vice President, Head of Operations, and member of the Operating Committee of Wells Fargo & Company (financial services, 2020-2023). Mr. Owens currently serves as Chairman of the Board of Directors of Robert Wood Johnson Barnabas Health, Inc. (academic healthcare system, 2022-present). Previously, Mr. Owens served as Senior Executive Vice President and Head of Operations at Bank of New York Mellon (financial services, 2019-2020) and held various roles at JPMorgan Chase & Co. (financial services, 2007-2019), including Managing Director for Wholesale Banking Operations. Mr. Owens also previously served as a member of the Board of Directors of the Depository Trust & Clearing Corporation (financial services, 2016) and as Chairman of the Board of Directors of the Clearing House Interbank Payments System (private clearing system, 2015-2016).        
Heather Bonner (1977)
Year of Election or Appointment: 2023
Assistant Treasurer
Ms. Bonner also serves as an officer of other funds. Ms. Bonner is a Senior Vice President (2022-present) and is an employee of Fidelity Investments (2022-present). Ms. Bonner serves as Senior Vice President, Vice President, Treasurer, or Director of certain Fidelity entities. Prior to joining Fidelity, Ms. Bonner served as Managing Director at AQR Capital Management (2013-2022) and was the Treasurer and Principal Financial Officer of the AQR Funds (2013-2022).
Craig S. Brown (1977)
Year of Election or Appointment: 2019
Assistant Treasurer
Mr. Brown also serves as an officer of other funds. Mr. Brown is a Vice President (2015-present) and is an employee of Fidelity Investments. Mr. Brown serves as Assistant Treasurer of FIMM, LLC (2021-present). Previously, Mr. Brown served as Assistant Treasurer of certain Fidelity® funds (2019-2022).     
John J. Burke III (1964)
Year of Election or Appointment: 2018
Chief Financial Officer
Mr. Burke also serves as Chief Financial Officer of other funds. Mr. Burke is Head of Fidelity Fund and Investment Operations (2018-present) and is an employee of Fidelity Investments. Mr. Burke serves as President, Executive Vice President, or Director of certain Fidelity entities. Previously Mr. Burke served as head of Asset Management Investment Operations (2012-2018).
Margaret Carey (1973)
Year of Election or Appointment: 2023
Secretary and Chief Legal Officer (CLO)
Ms. Carey also serves as an officer of other funds and as CLO of certain Fidelity entities. Ms. Carey is a Senior Vice President, Deputy General Counsel (2019-present) and is an employee of Fidelity Investments.        
David J. Carter (1973)
Year of Election or Appointment: 2020
Assistant Secretary
Mr. Carter also serves as Assistant Secretary of other funds. Mr. Carter is a Senior Vice President, Deputy General Counsel (2022-present) and is an employee of Fidelity Investments. Mr. Carter serves as Chief Legal Officer of Fidelity Investments Institutional Operations Company LLC - Shareholder Division (transfer agent, 2020-present).
Jonathan Davis (1968)
Year of Election or Appointment: 2010
Assistant Treasurer
Mr. Davis also serves as an officer of other funds. Mr. Davis is a Vice President (2006-present) and is an employee of Fidelity Investments. Mr. Davis serves as Assistant Treasurer or Director of certain Fidelity entities.        
Laura M. Del Prato (1964)
Year of Election or Appointment: 2018
President and Treasurer
Ms. Del Prato also serves as an officer of other funds. Ms. Del Prato is a Senior Vice President (2017-present) and is an employee of Fidelity Investments. Ms. Del Prato serves as Vice President or Assistant Treasurer of certain Fidelity entities. Previously, Ms. Del Prato served as President and Treasurer of The North Carolina Capital Management Trust: Cash Portfolio and Term Portfolio (2018-2020).     
Robin Foley (1964)
Year of Election or Appointment: 2023
Vice President
Ms. Foley also serves as Vice President of other funds. Ms. Foley serves as Head of Fidelity's Fixed Income division (2023-present) and is an employee of Fidelity Investments. Previously, Ms. Foley served as Chief Investment Officer of Bonds (2017-2023).     
Christopher M. Gouveia (1973)
Year of Election or Appointment: 2023
Chief Compliance Officer
Mr. Gouveia also serves as Chief Compliance Officer of other funds. Mr. Gouveia is a Senior Vice President of Asset Management Compliance (2019-present) and is an employee of Fidelity Investments. Mr. Gouveia serves as Compliance Officer of Fidelity Management Trust Company (2023-present). Previously, Mr. Gouveia served as Chief Compliance Officer of the North Carolina Capital Management Trust (2016-2019).          
Colm A. Hogan (1973)
Year of Election or Appointment: 2016
Assistant Treasurer
Mr. Hogan also serves as an officer of other funds. Mr. Hogan is a Vice President (2016-present) and is an employee of Fidelity Investments. Mr. Hogan serves as Assistant Treasurer of certain Fidelity entities. Previously, Mr. Hogan served as Deputy Treasurer of certain Fidelity® funds (2016-2020) and Assistant Treasurer of certain Fidelity® funds (2016-2018). 
Chris Maher (1972)
Year of Election or Appointment: 2013
Assistant Treasurer
Mr. Maher also serves as an officer of other funds. Mr. Maher is a Vice President (2008-present) and is an employee of Fidelity Investments. Mr. Maher serves as Assistant Treasurer of certain Fidelity entities. Previously, Mr. Maher served as Assistant Treasurer of certain funds (2013-2020).     
Brett Segaloff (1972)
Year of Election or Appointment: 2021
Anti-Money Laundering (AML) Officer
Mr. Segaloff also serves as AML Officer of other funds. Mr. Segaloff is a Vice President (2022-present) and is an employee of Fidelity Investments. Mr. Segaloff serves as Anti Money Laundering Compliance Officer or Anti Money Laundering/Bank Secrecy Act Compliance Officer of certain Fidelity entities.          
Stacie M. Smith (1974)
Year of Election or Appointment: 2013
Assistant Treasurer
Ms. Smith also serves as an officer of other funds. Ms. Smith is a Senior Vice President (2016-present) and is an employee of Fidelity Investments. Ms. Smith serves as Assistant Treasurer of certain Fidelity entities and has served in other fund officer roles.
Jim Wegmann (1979)
Year of Election or Appointment: 2021
Deputy Treasurer
Mr. Wegmann also serves as an officer of other funds. Mr. Wegmann is a Vice President (2016-present) and is an employee of Fidelity Investments. Mr. Wegmann serves as Assistant Treasurer of FIMM, LLC (2021-present). Previously, Mr. Wegmann served as Assistant Treasurer of certain Fidelity® funds (2019-2021).          
+ The information includes principal occupation during the last five years. 
Shareholder Expense Example  
As a shareholder, you incur two types of costs: (1) transaction costs, which may include sales charges (loads) on purchase payments or redemption proceeds, as applicable and (2) ongoing costs, which generally include management fees, distribution and/or service (12b-1) fees and other Fund expenses. This Example is intended to help you understand your ongoing costs (in dollars) of investing in a fund and to compare these costs with the ongoing costs of investing in other mutual funds.
 
The Example is based on an investment of $1,000 invested at the beginning of the period and held for the entire period (September 1, 2023 to February 29, 2024).
 
Actual Expenses
The first line of the accompanying table provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000.00 (for example, an $8,600 account value divided by $1,000.00 = 8.6), then multiply the result by the number in the first line for a class/Fund under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If any fund is a shareholder of any underlying mutual funds or exchange-traded funds (ETFs) (the Underlying Funds), such fund indirectly bears its proportional share of the expenses of the Underlying Funds in addition to the direct expenses incurred presented in the table. These fees and expenses are not included in the annualized expense ratio used to calculate the expense estimate in the table below.
 
Hypothetical Example for Comparison Purposes
The second line of the accompanying table provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. If any fund is a shareholder of any Underlying Funds, such fund indirectly bears its proportional share of the expenses of the Underlying Funds in addition to the direct expenses as presented in the table. These fees and expenses are not included in the annualized expense ratio used to calculate the expense estimate in the table below.
Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transaction costs. Therefore, the second line of the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher.
 
 
 
 
 
Annualized Expense Ratio- A
 
Beginning Account Value September 1, 2023
 
Ending Account Value February 29, 2024
 
Expenses Paid During Period- C September 1, 2023 to February 29, 2024
 
 
 
 
 
 
 
 
 
 
Fidelity® Series Long-Term Treasury Bond Index Fund
 
 
 
-%-D
 
 
 
 
 
 
Actual
 
 
 
 
 
$ 1,000
 
$ 997.70
 
$-E
 
Hypothetical-B
 
 
 
 
 
$ 1,000
 
$ 1,024.86
 
$-E
 
 
A   Annualized expense ratio reflects expenses net of applicable fee waivers.
 
B   5% return per year before expenses
 
C   Expenses are equal to the annualized expense ratio, multiplied by the average account value over the period, multiplied by 182/ 366 (to reflect the one-half year period). The fees and expenses of any Underlying Funds are not included in each annualized expense ratio.
D   Amount represents less than .005%.
 
E   Amount represents less than $.005.
 
 
 
 
Distributions (Unaudited)
 
The dividend and capital gains distributions for the fund(s) are available on Fidelity.com or Institutional.Fidelity.com.
 
A total of 99.11% of the dividends distributed during the fiscal year was derived from interest on U.S. Government securities which is generally exempt from state income tax.
 
The fund designates $606,523,970 of distributions paid during the fiscal year ended 2024 as qualifying to be taxed as section 163(j) interest dividends.
 
The fund will notify shareholders in January 2025 of amounts for use in preparing 2024 income tax returns.
 
 
Board Approval of Investment Advisory Contracts
 
Board Approval of Investment Advisory Contracts and Management Fees
Fidelity Series Long-Term Treasury Bond Index Fund
Each year, the Board of Trustees, including the Independent Trustees (together, the Board), considers the renewal of the fund's management contract with Fidelity Management & Research Company LLC (FMR) and the sub-advisory agreements (together, the Advisory Contracts) for the fund. FMR and the sub-advisers are referred to herein as the Investment Advisers. The Board, assisted by the advice of fund counsel and Independent Trustees' counsel, requests and considers a broad range of information relevant to the renewal of the Advisory Contracts throughout the year.
The Board meets regularly and, at each of its meetings, covers an extensive agenda of topics and materials and considers factors that are relevant to its annual consideration of the renewal of the fund's Advisory Contracts, including the services and support provided to the fund and its shareholders. The Board's Operations Committee, of which all the Independent Trustees are members, meets regularly throughout the year and requests, receives and considers, among other matters, information related to the annual consideration of the renewal of the fund's Advisory Contracts before making its recommendation to the Board. The Board also meets as needed to review matters specifically related to the Board's annual consideration of the renewal of the Advisory Contracts. Members of the Board may also meet from time to time with trustees of other Fidelity funds through joint ad hoc committees to discuss certain matters relevant to all of the Fidelity funds.
At its September 2023 meeting, the Board unanimously determined to renew the fund's Advisory Contracts. The Board considered all factors it believed relevant and reached a determination, with the assistance of fund counsel and Independent Trustees' counsel and through the exercise of its business judgment, that the renewal of the Advisory Contracts was in the best interests of the fund and its shareholders and the fact that no fee is payable under the management contract was fair and reasonable in light of all of the surrounding circumstances.
Nature, Extent, and Quality of Services Provided. The Board considered staffing as it relates to the fund, including the backgrounds and experience of investment personnel of the Investment Advisers, and also considered the Investment Advisers' implementation of the fund's investment program. The Independent Trustees also had discussions with senior management of Fidelity's investment operations and investment groups. The Board considered the structure of the investment personnel compensation program and whether this structure provides appropriate incentives to act in the best interests of the fund.
Resources Dedicated to Investment Management and Support Services. The Board reviewed the general qualifications and capabilities of Fidelity's investment staff, including its size, education, experience, and resources, as well as Fidelity's approach to recruiting, training, managing, and compensating investment personnel. The Board noted the resources devoted to Fidelity's global investment organization, and that Fidelity's analysts have extensive resources, tools and capabilities that allow them to conduct quantitative and fundamental analysis, as well as credit analysis of issuers, counterparties and guarantors. Further, the Board considered that Fidelity's investment professionals have sufficient access to global information and data so as to provide competitive investment results over time, and that those professionals also have access to sophisticated tools that permit them to assess portfolio construction and risk and performance attribution characteristics continuously, as well as to transmit new information and research conclusions rapidly around the world. Additionally, in its deliberations, the Board considered Fidelity's trading, risk management, compliance, cybersecurity, and technology and operations capabilities and resources, which are integral parts of the investment management process.
Administrative Services. The Board considered (i) the nature, extent, quality, and cost of advisory and administrative services performed by the Investment Advisers and their affiliates under the Advisory Contracts and under separate agreements covering transfer agency, pricing and bookkeeping, and securities lending services for the fund; (ii) the nature and extent of Fidelity's supervision of third party service providers, principally custodians, subcustodians, and pricing vendors; and (iii) the resources devoted by Fidelity to, and the record of compliance with, the fund's compliance policies and procedures. The Board also considered the fund's securities lending activities and any payments made to Fidelity relating to securities lending.
Investment Performance. The Board reviewed the fund's absolute investment performance, as well as the fund's relative investment performance. In this regard, the Board noted that the fund is designed to offer an investment option for other investment companies, collective investment trusts, and 529 plans managed by Fidelity and ultimately to enhance the performance of those investment companies, collective investment trusts, and 529 plans.
Based on its review, the Board concluded that the nature, extent, and quality of services provided to the fund under the Advisory Contracts should continue to benefit the shareholders of the fund.
Competitiveness of Management Fee and Total Expense Ratio. The Board considered that the fund does not pay FMR a management fee for investment advisory services, but that FMR receives fees for providing services to funds, collective investment trusts, and 529 plans that invest in the fund. The Board also noted that FMR or an affiliate undertakes to pay all operating expenses of the fund, except transfer agent fees, 12b-1 fees, Independent Trustee fees and expenses, custodian fees and expenses, proxy and shareholder meeting expenses, interest, taxes, and extraordinary expenses (such as litigation expenses). The Board further noted that the fund pays its non-operating expenses, including brokerage commissions and fees and expenses associated with the fund's securities lending program, if applicable.
The Board further considered that FMR has contractually agreed to reimburse the fund to the extent that total operating expenses, with certain exceptions, as a percentage of its average net assets, exceed 0.003% through June 30, 2026.
Based on its review, the Board considered that the fund does not pay a management fee and concluded that the fund's total expense ratio was reasonable in light of the services that the fund and its shareholders receive and the other factors considered.
Costs of the Services and Profitability. The Board considered the level of Fidelity's profits in respect of all the Fidelity funds.
A public accounting firm has been engaged annually by the Board as part of the Board's assessment of Fidelity's profitability analysis. The engagement includes the review and assessment of the methodologies used by Fidelity in determining the revenues and expenses attributable to Fidelity's fund business, and completion of agreed-upon procedures in respect of the mathematical accuracy of certain fund profitability information and its conformity to established allocation methodologies. After considering the reports issued under the engagement and information provided by Fidelity, the Board concluded that while other allocation methods may also be reasonable, Fidelity's profitability methodologies are reasonable in all material respects.
The Board also reviewed Fidelity's non-fund businesses and potential indirect benefits such businesses may have received as a result of their association with Fidelity's fund business (i.e., fall-out benefits) as well as cases where Fidelity's affiliates may benefit from the funds' business. The Board considered areas where potential indirect benefits to the Fidelity funds from their relationships with Fidelity may exist. The Board's consideration of these matters was informed by the findings of a joint ad hoc committee created by it and the boards of other Fidelity funds to evaluate potential fall-out benefits.
The Board concluded that the costs of the services provided by and the profits realized by Fidelity in connection with the operation of the fund were not relevant to the renewal of the Advisory Contracts because the fund pays no advisory fees and FMR or an affiliate bears all expenses of the fund, with limited exceptions.
Economies of Scale. The Board concluded that because the fund pays no advisory fees and FMR or an affiliate bears all expenses of the fund with certain limited exceptions, the realization of economies of scale was not a material factor in the Board's decision to renew the fund's Advisory Contracts.
Additional Information Requested by the Board. In order to develop fully the factual basis for consideration of the Fidelity funds' advisory contracts, the Board requested and received additional information on certain topics, including: (i) Fidelity's fund profitability methodology, profitability trends for certain funds, the allocation of various costs to different funds, and the impact of certain factors on fund profitability results; (ii) portfolio manager changes that have occurred during the past year and Fidelity's views regarding portfolio manager investment in the Fidelity funds that they manage; (iii) hiring, training, and retaining personnel; (iv) the arrangements with and compensation paid to certain fund sub-advisers and the treatment of such compensation within Fidelity's fund profitability methodology; (v) the terms of the funds' various management fee structures, including the basic group fee and the terms of Fidelity's voluntary expense limitation arrangements; (vi) Fidelity's transfer agent, pricing and bookkeeping fees, expense and service structures for different funds and classes relative to competitive trends and market conditions; (vii) the impact on fund profitability of recent industry trends, such as the growth in passively managed funds and the changes in flows for different types of funds; (viii) the types of management fee and total expense comparisons provided, and the challenges and limitations associated with such information; (ix) explanations regarding the relative total expense ratios and management fees of certain funds and classes, total expense and management fee competitive trends, and methodologies for total expense and management fee competitive comparisons; (x) information concerning expense limitations applicable to certain funds; and (xi) matters related to money market funds, exchange-traded funds, and target date funds.
Conclusion. Based on its evaluation of all of the conclusions noted above, and after considering all factors it believed relevant, the Board, including the Independent Trustees, concluded that the advisory and sub-advisory fee arrangements are fair and reasonable in light of all of the surrounding circumstances and that the fund's Advisory Contracts should be renewed through September 30, 2024.
Board Approval of Investment Advisory Contracts
Fidelity Series Long-Term Treasury Bond Index Fund
At its January 2024 meeting, the Board of Trustees, including the Independent Trustees (together, the Board), approved amended and restated sub-advisory agreements (the Sub-Advisory Contracts) for the fund, including the fund's sub-advisory agreements with FMR Investment Management (UK) Limited (FMR UK), Fidelity Management & Research (Hong Kong) Limited (FMR H.K.), and Fidelity Management & Research (Japan) Limited (FMR Japan). The Sub-Advisory Contracts will be effective March 1, 2024. The Board will consider the annual renewal of the fund's Sub-Advisory Contracts in September 2024, following its review of additional materials provided by FMR.
The Board considered the Sub-Advisory Contracts, which changed the arrangements for fees paid by FMR to the sub-advisers under the agreements. The Board noted that the agreements with FMR UK, FMR H.K., and FMR Japan were amended to provide that FMR will compensate each sub-adviser at a fee equal to 110% of the sub-adviser's costs incurred in providing services under the agreement. The Board considered that, under the Sub-Advisory Contracts, FMR, and not the fund, will continue to pay the sub-advisory fees to each applicable sub-adviser, and that the management fee paid by the fund under the management contract with FMR will remain unchanged.
The Board considered that the approval of the fund's Sub-Advisory Contracts will not result in any changes in the investment process or strategies employed in the management of the fund's assets or the day-to-day management of the fund or the persons primarily responsible for such management. Further, the Board considered that the Sub-Advisory Contracts would not change the obligations and services of FMR and its affiliates on behalf of the fund, and, in particular, there would be no change in the nature and level of services provided to the fund by FMR and its affiliates.
In connection with its consideration of future renewals of the fund's advisory contracts, the Board will consider: (i) the nature, extent and quality of services provided to the funds, including shareholder and administrative services and investment performance; (ii) the competitiveness of the management fee and total expenses for the fund; (iii) the costs of the services and profitability, including the revenues earned and the expenses incurred in conducting the business of developing, marketing, distributing, managing, administering, and servicing the fund and its shareholders, to the extent applicable; and (iv) whether there have been economies of scale in respect of the Fidelity funds, whether the Fidelity funds (including the fund) have appropriately benefited from any such economies of scale, and whether there is the potential for realization of any further economies.
Based on its evaluation of all of the conclusions noted above, and after considering all factors it believed relevant, the Board concluded that the fund's management fee structure is fair and reasonable, and that the fund's Sub-Advisory Contracts should be approved.
 
Liquidity Risk Management Program
The Securities and Exchange Commission adopted Rule 22e-4 under the Investment Company Act of 1940 (the Liquidity Rule) to promote effective liquidity risk management throughout the open-end investment company industry, thereby reducing the risk that funds will be unable to meet their redemption obligations and mitigating dilution of the interests of fund shareholders.
The Fund has adopted and implemented a liquidity risk management program (the Program) reasonably designed to assess and manage the Fund's liquidity risk and to comply with the requirements of the Liquidity Rule. The Fund's Board of Trustees (the Board) has designated the Fund's investment adviser as administrator of the Program. The Fidelity advisers have established a Liquidity Risk Management Committee (the LRM Committee) to manage the Program for each of the Fidelity Funds. The LRM Committee monitors the adequacy and effectiveness of implementation of the Program and on a periodic basis assesses each Fund's liquidity risk based on a variety of factors including (1) the Fund's investment strategy, (2) portfolio liquidity and cash flow projections during normal and reasonably foreseeable stressed conditions, (3) shareholder redemptions, (4) borrowings and other funding sources and (5) certain factors specific to ETFs including the effect of the Fund's prices and spreads, market participants, and basket compositions on the overall liquidity of the Fund's portfolio, as applicable.
In accordance with the Program, each of the Fund's portfolio investments is classified into one of four defined liquidity categories based on a determination of a reasonable expectation for how long it would take to convert the investment to cash (or sell or dispose of the investment) without significantly changing its market value.
Liquidity classification determinations take into account a variety of factors including various market, trading and investment-specific considerations, as well as market depth, and generally utilize analysis from a third-party liquidity metrics service.
The Liquidity Rule places a 15% limit on a fund's illiquid investments and requires funds that do not primarily hold assets that are highly liquid investments to determine and maintain a minimum percentage of the fund's net assets to be invested in highly liquid investments (highly liquid investment minimum or HLIM).  The Program includes provisions reasonably designed to comply with the 15% limit on illiquid investments and for determining, periodically reviewing and complying with the HLIM requirement as applicable.
At a recent meeting of the Fund's Board of Trustees, the LRM Committee provided a written report to the Board pertaining to the operation, adequacy, and effectiveness of the Program for the period December 1, 2022 through November 30, 2023.  The report concluded that the Program is operating effectively and is reasonably designed to assess and manage the Fund's liquidity risk.  
Proxy Voting Results
A special meeting of shareholders was held on October 18, 2023. The results of votes taken among shareholders on the proposal before them are reported below. Each vote reported represents one dollar of net asset value held on the record date for the meeting.
Proposal 1
To elect a Board of Trustees.
 
# of
Votes
% of
Votes
Abigail P. Johnson
Affirmative
378,729,502,260.01
97.58
Withheld
9,407,876,478.96
2.42
TOTAL
388,137,378,738.97
100.00
Jennifer Toolin McAuliffe
Affirmative
378,454,868,010.95
97.51
Withheld
9,682,510,728.02
2.49
TOTAL
388,137,378,738.97
100.00
Christine J. Thompson
Affirmative
378,837,121,274.52
97.60
Withheld
9,300,257,464.45
2.40
TOTAL
388,137,378,738.97
100.00
Elizabeth S. Acton
Affirmative
378,262,110,794.85
97.46
Withheld
9,875,267,944.12
2.54
TOTAL
388,137,378,738.97
100.00
Laura M. Bishop
Affirmative
380,482,113,171.06
98.03
Withheld
7,655,265,567.91
1.97
TOTAL
388,137,378,738.97
100.00
Ann E. Dunwoody
Affirmative
380,016,034,008.12
97.91
Withheld
8,121,344,730.85
2.09
TOTAL
388,137,378,738.97
100.00
John Engler
Affirmative
379,432,488,394.20
97.76
Withheld
8,704,890,344.77
2.24
TOTAL
388,137,378,738.97
100.00
Robert F. Gartland
Affirmative
378,741,819,600.60
97.58
Withheld
9,395,559,138.37
2.42
TOTAL
388,137,378,738.97
100.00
Robert W. Helm
Affirmative
380,389,324,755.07
98.00
Withheld
7,748,053,983.90
2.00
TOTAL
388,137,378,738.97
100.00
Arthur E. Johnson
Affirmative
378,427,694,151.67
97.50
Withheld
9,709,684,587.30
2.50
TOTAL
388,137,378,738.97
100.00
Michael E. Kenneally
Affirmative
377,842,228,145.18
97.35
Withheld
10,295,150,593.79
2.65
TOTAL
388,137,378,738.97
100.00
Mark A. Murray
Affirmative
380,158,432,703.37
97.94
Withheld
7,978,946,035.60
2.06
TOTAL
388,137,378,738.97
100.00
Carol J. Zierhoffer
Affirmative
380,522,113,360.24
98.04
Withheld
7,615,265,378.73
1.96
TOTAL
388,137,378,738.97
100.00
 
 
 
Proposal 1 reflects trust wide proposal and voting results.
 
 
 
1.9872674.107
XS8-ANN-0424
Fidelity® SAI U.S. Treasury Bond Index Fund
 
 
Annual Report
February 29, 2024
 
Offered exclusively to certain clients of the Adviser, or its affiliates, including Strategic Advisers LLC (Strategic Advisers) - not available for sale to the general public. Fidelity® SAI is a product name of Fidelity® funds dedicated to certain programs affiliated with Strategic Advisers.

Contents

Performance

Management's Discussion of Fund Performance

Investment Summary

Schedule of Investments

Financial Statements

Notes to Financial Statements

Report of Independent Registered Public Accounting Firm

Trustees and Officers

Shareholder Expense Example

Distributions

Board Approval of Investment Advisory Contracts

Liquidity Risk Management Program

Proxy Voting Results

To view a fund's proxy voting guidelines and proxy voting record for the 12-month period ended June 30, visit http://www.fidelity.com/proxyvotingresults or visit the Securities and Exchange Commission's (SEC) web site at http://www.sec.gov.
 
 
You may also call 1-800-544-3455 to request a free copy of the proxy voting guidelines.
BLOOMBERG ® is a trademark and service mark of Bloomberg Finance L.P. and its affiliates (collectively "Bloomberg"). Bloomberg or Bloomberg's licensors own all proprietary rights in the Bloomberg Indices. Neither Bloomberg nor Bloomberg's licensors approves or endorses this material, or guarantees the accuracy or completeness of any information herein, or makes any warranty, express or implied, as to the results to be obtained therefrom and, to the maximum extent allowed by law, neither shall have any liability or responsibility for injury or damages arising in connection therewith.
Standard & Poor's, S&P and S&P 500 are registered service marks of The McGraw-Hill Companies, Inc. and have been licensed for use by Fidelity Distributors Corporation.
Other third-party marks appearing herein are the property of their respective owners.
All other marks appearing herein are registered or unregistered trademarks or service marks of FMR LLC or an affiliated company. © 2024 FMR LLC. All rights reserved.
 
This report and the financial statements contained herein are submitted for the general information of the shareholders of the Fund. This report is not authorized for distribution to prospective investors in the Fund unless preceded or accompanied by an effective prospectus.
A fund files its complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. Forms N-PORT are available on the SEC's web site at http://www.sec.gov. A fund's Forms N-PORT may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information regarding the operation of the SEC's Public Reference Room may be obtained by calling 1-800-SEC-0330.
For a complete list of a fund's portfolio holdings, view the most recent holdings listing, semiannual report, or annual report on Fidelity's web site at http://www.fidelity.com, http://www.institutional.fidelity.com, or http://www.401k.com, as applicable.
NOT FDIC INSURED •MAY LOSE VALUE •NO BANK GUARANTEE
Neither the Fund nor Fidelity Distributors Corporation is a bank.
 
Performance: The Bottom Line
Average annual total return reflects the change in the value of an investment, assuming reinvestment of distributions from dividend income and capital gains (the profits earned upon the sale of securities that have grown in value, if any) and assuming a constant rate of performance each year. The hypothetical investment and the average annual total returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. During periods of reimbursement by Fidelity, a fund's total return will be greater than it would be had the reimbursement not occurred. How a fund did yesterday is no guarantee of how it will do tomorrow.
Average Annual Total Returns
 
 
 
 
Periods ended February 29, 2024
 
Past 1
year
Past 5
years
Life of
Fund A
Fidelity® SAI U.S. Treasury Bond Index Fund
2.25%
0.13%
0.29%
 
A   From March 1, 2016
 $10,000 Over Life of Fund
 
Let's say hypothetically that $10,000 was invested in Fidelity® SAI U.S. Treasury Bond Index Fund, on March 1, 2016, when the fund started.
 
The chart shows how the value of your investment would have changed, and also shows how the Bloomberg U.S. Treasury Index performed over the same period.
 
Management's Discussion of Fund Performance
Market Recap:
U.S. taxable investment-grade bonds gained 3.33% for the 12 months ending February 29, 2024, as measured by the Bloomberg U.S. Aggregate Bond Index. The advance was driven by a powerful rally in the final two months of 2023, but the 12-month period was marked by high levels of volatility. The early months saw the bond market start to rebound from the historic downturn that began in early 2022, when the U.S. Federal Reserve began an aggressive series of interest rate hikes to combat persistent inflation. The index advanced in March and April of 2023 on optimism the central bank would soon be done with its hiking cycle, only to fall back in each of the next six months, as cooling but still-high inflation and a strong labor market suggested it may need to keep raising rates. Bonds saw particularly sharp sell-offs in September (-2.54%) and October (-1.58%). At its committee meeting in November, though, the Fed struck a new, more optimistic tone, and then in December signaled to the market that, if disinflation trends hold, it expected to begin cutting interest rates in 2024. The index gained 4.53% in November, its best month since the 1980s, and a further 3.83% in December but fell in January (-0.27%) and February (-1.41%) as disinflation stalled. For the full 12 months, short-term bonds outperformed long-term issues, while lower-quality bonds bettered higher-quality debt, and risk assets, including corporate bonds and asset-backed securities, notably outpaced U.S. Treasurys.
Comments from Co-Portfolio Managers Brandon Bettencourt and Richard Munclinger:
For the fiscal year, the fund gained 2.25% versus the 2.29% advance of the benchmark, the Bloomberg US 1-30 Year Treasury Bond Index. These results met our goal of producing monthly returns, before expenses, that closely match the benchmark return. We construct the portfolio using optimization. This approach minimizes the differences between risk exposures of the fund relative to the index. Exposures include duration, key rate durations, and other factors. Treasurys were under pressure throughout much of the past 12 months, particularly summer and early fall 2023, as well as early 2024, amid heightened concern the Fed would hold rates higher and for significantly longer than expected. For the 12 months overall, Treasurys with short durations (less interest rate sensitivity) posted the biggest gains this period, while long-duration Treasurys declined.
 
 
 
The views expressed above reflect those of the portfolio manager(s) only through the end of the period as stated on the cover of this report and do not necessarily represent the views of Fidelity or any other person in the Fidelity organization. Any such views are subject to change at any time based upon market or other conditions and Fidelity disclaims any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Fidelity fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any Fidelity fund.
 
Investment Summary February 29, 2024 (Unaudited)
Coupon Distribution (% of Fund's Investments)
 
0.01 - 0.99%
17.1
 
1 - 1.99%
22.3
 
2 - 2.99%
18.4
 
3 - 3.99%
16.1
 
4 - 4.99%
18.7
 
5 - 5.99%
2.2
 
6 - 6.99%
3.2
 
 
Coupon distribution shows the range of stated interest rates on the fund's investments, excluding short-term investments.
 
 
Asset Allocation (% of Fund's net assets)
 
Schedule of Investments February 29, 2024
Showing Percentage of Net Assets  
U.S. Government and Government Agency Obligations - 99.0%
 
 
Principal
Amount (a)
 
Value ($)
 
U.S. Treasury Obligations - 99.0%
 
 
 
U.S. Treasury Bonds:
 
 
 
 1.125% 5/15/40
 
21,884,000
13,503,967
 1.125% 8/15/40
 
121,437,000
74,199,904
 1.25% 5/15/50
 
12,672,000
6,435,990
 1.375% 11/15/40
 
89,634,300
56,924,783
 1.375% 8/15/50
 
4,170,000
2,188,924
 1.625% 11/15/50
 
120,537,500
67,694,048
 1.75% 8/15/41
 
169,627,000
112,967,606
 1.875% 2/15/41
 
14,329,000
9,874,136
 1.875% 2/15/51
 
158,731,000
95,021,585
 1.875% 11/15/51
 
90,363,000
53,836,581
 2% 11/15/41
 
95,700,000
66,257,297
 2% 2/15/50
 
94,678,000
58,948,150
 2% 8/15/51
 
124,145,000
76,451,012
 2.25% 5/15/41
 
75,633,000
55,223,908
 2.25% 8/15/46
 
1,600,000
1,086,750
 2.25% 8/15/49
 
63,180,000
41,839,474
 2.25% 2/15/52
 
138,800,000
90,794,718
 2.375% 2/15/42
 
97,200,000
71,411,625
 2.375% 11/15/49
 
35,960,000
24,473,870
 2.375% 5/15/51
 
204,437,000
137,955,046
 2.5% 2/15/45
 
4,601,000
3,335,006
 2.5% 2/15/46
 
15,623,000
11,213,164
 2.5% 5/15/46
 
24,683,000
17,666,664
 2.75% 8/15/42
 
59,738,000
46,476,631
 2.75% 11/15/42
 
32,626,000
25,281,327
 2.75% 8/15/47
 
12,031,000
8,941,947
 2.75% 11/15/47
 
318,000
235,954
 2.875% 5/15/43
 
56,884,000
44,771,708
 2.875% 8/15/45
 
47,454,000
36,645,239
 2.875% 11/15/46
 
4,289,000
3,281,420
 2.875% 5/15/49
 
34,911,000
26,397,353
 2.875% 5/15/52
 
33,900,000
25,525,641
 3% 5/15/42
 
31,038,000
25,158,966
 3% 11/15/44
 
29,700,000
23,555,813
 3% 5/15/45
 
39,700,000
31,390,914
 3% 11/15/45
 
57,800,000
45,546,851
 3% 2/15/47
 
77,389,000
60,457,133
 3% 5/15/47
 
82,292,000
64,223,120
 3% 2/15/48
 
36,059,000
28,020,378
 3% 8/15/48
 
106,508,000
82,647,711
 3% 2/15/49
 
128,911,000
99,885,883
 3% 8/15/52
 
88,500,000
68,418,106
 3.125% 11/15/41
 
50,864,000
42,346,267
 3.125% 2/15/42
 
11,800,000
9,786,625
 3.125% 2/15/43
 
67,701,000
55,562,422
 3.125% 5/15/48
 
99,204,500
78,824,950
 3.25% 5/15/42
 
182,400,000
153,387,000
 3.375% 8/15/42
 
60,100,000
51,399,586
 3.375% 5/15/44
 
61,800,000
52,247,555
 3.375% 11/15/48
 
8,391,300
6,971,662
 3.5% 2/15/39
 
315,000
286,601
 3.625% 8/15/43
 
33,301,000
29,356,913
 3.625% 2/15/44
 
38,656,000
33,984,060
 3.625% 2/15/53
 
63,100,000
55,168,133
 3.625% 5/15/53
 
95,300,000
83,380,055
 3.75% 11/15/43
 
12,484,000
11,192,686
 3.875% 2/15/43
 
57,200,000
52,367,047
 4% 11/15/42
 
127,500,000
119,018,261
 4% 11/15/52
 
138,800,000
129,962,343
 4.125% 8/15/53
 
79,800,000
76,396,031
 4.25% 5/15/39
 
8,898,000
8,802,068
 4.25% 11/15/40
 
17,780,000
17,383,423
 4.25% 2/15/54
 
29,600,000
29,045,000
 4.375% 2/15/38
 
6,284,000
6,357,641
 4.375% 11/15/39
 
4,140,000
4,139,353
 4.375% 5/15/41
 
7,517,000
7,438,306
 4.375% 8/15/43
 
6,500,000
6,363,906
 4.5% 2/15/36
 
24,732,200
25,593,963
 4.5% 5/15/38
 
24,300,000
24,850,547
 4.5% 8/15/39
 
3,831,000
3,891,159
 4.625% 2/15/40
 
4,405,000
4,525,449
 4.75% 2/15/37
 
13,000
13,732
 4.75% 2/15/41
 
33,300,000
34,538,344
 4.75% 11/15/53
 
37,400,000
39,790,094
 5% 5/15/37
 
1,967,000
2,123,515
 5.25% 11/15/28
 
31,601,000
32,866,274
 5.25% 2/15/29
 
10,374,000
10,835,967
 5.375% 2/15/31
 
3,562,000
3,813,566
 5.5% 8/15/28
 
154,965,000
162,501,383
 6% 2/15/26
 
3,771,000
3,869,694
 6.125% 11/15/27
 
139,604,000
148,007,506
 6.125% 8/15/29
 
47,344,000
51,436,667
 6.25% 5/15/30
 
201,878,000
223,359,081
 6.375% 8/15/27
 
21,500,000
22,865,586
 6.5% 11/15/26
 
39,000
41,028
 6.625% 2/15/27
 
9,550,000
10,147,621
 6.75% 8/15/26
 
56,623,000
59,469,633
 6.875% 8/15/25
 
91,000
93,833
U.S. Treasury Notes:
 
 
 
 0.25% 5/31/25
 
12,744,000
12,029,639
 0.25% 6/30/25
 
115,476,400
108,665,096
 0.25% 7/31/25
 
157,226,000
147,436,226
 0.25% 8/31/25
 
124,344,000
116,227,639
 0.25% 9/30/25
 
150,380,000
140,100,116
 0.25% 10/31/25
 
127,321,300
118,219,816
 0.375% 4/15/24
 
49,000
48,699
 0.375% 4/30/25
 
11,267,000
10,690,006
 0.375% 11/30/25
 
32,600,000
30,244,141
 0.375% 12/31/25 (b)
 
86,183,100
79,732,834
 0.375% 1/31/26
 
123,905,000
114,253,963
 0.375% 7/31/27
 
141,814,000
123,943,221
 0.375% 9/30/27
 
61,826,000
53,733,073
 0.5% 3/31/25
 
97,681,000
93,094,572
 0.5% 2/28/26
 
156,611,000
144,388,000
 0.5% 4/30/27
 
119,444,000
105,824,584
 0.5% 5/31/27
 
38,920,000
34,371,225
 0.5% 6/30/27
 
25,881,000
22,794,489
 0.5% 8/31/27
 
76,109,000
66,642,943
 0.625% 7/31/26
 
129,205,000
117,798,621
 0.625% 3/31/27
 
17,704,000
15,799,437
 0.625% 11/30/27
 
28,200,700
24,607,314
 0.625% 12/31/27
 
15,039,900
13,082,363
 0.625% 5/15/30
 
191,927,000
154,073,898
 0.625% 8/15/30
 
182,194,900
145,044,221
 0.75% 3/31/26
 
114,616,000
105,975,029
 0.75% 4/30/26
 
79,288,000
73,096,722
 0.75% 5/31/26
 
144,299,000
132,653,620
 0.75% 8/31/26
 
57,499,000
52,449,869
 0.75% 1/31/28
 
122,528,000
106,848,245
 0.875% 6/30/26
 
32,001,000
29,444,670
 0.875% 9/30/26
 
199,077,000
181,813,291
 0.875% 11/15/30
 
64,580,900
51,980,056
 1% 7/31/28
 
142,409,000
123,673,316
 1.125% 2/28/25
 
16,425,900
15,803,512
 1.125% 10/31/26
 
107,215,000
98,265,061
 1.125% 2/28/27
 
89,038,000
80,899,370
 1.125% 2/29/28
 
29,970,000
26,475,451
 1.125% 8/31/28
 
190,807,000
166,255,505
 1.125% 2/15/31
 
30,498,000
24,868,975
 1.25% 11/30/26
 
76,047,000
69,790,946
 1.25% 12/31/26
 
85,700,000
78,519,278
 1.25% 3/31/28
 
39,508,000
35,006,249
 1.25% 4/30/28
 
120,599,000
106,602,920
 1.25% 5/31/28
 
169,074,000
149,148,365
 1.25% 6/30/28
 
159,735,000
140,591,759
 1.25% 9/30/28
 
131,538,000
115,028,954
 1.25% 8/15/31
 
211,866,000
171,495,595
 1.375% 8/31/26
 
132,600,000
122,893,266
 1.375% 10/31/28
 
131,200,000
115,204,875
 1.375% 12/31/28
 
23,700,000
20,723,613
 1.375% 11/15/31
 
85,946,000
69,760,623
 1.5% 2/15/25
 
12,900,000
12,466,137
 1.5% 8/15/26
 
102,770,000
95,636,317
 1.5% 1/31/27
 
129,900,000
119,579,040
 1.5% 11/30/28
 
67,400,000
59,419,945
 1.5% 2/15/30
 
30,793,000
26,342,449
 1.625% 2/15/26
 
29,244,000
27,609,306
 1.625% 9/30/26
 
75,600,000
70,432,031
 1.625% 10/31/26
 
87,777,000
81,550,319
 1.625% 11/30/26
 
9,625,000
8,927,188
 1.625% 8/15/29
 
116,062,000
101,527,047
 1.625% 5/15/31
 
276,993,000
232,100,657
 1.75% 3/15/25
 
127,700,000
123,455,009
 1.75% 12/31/26
 
39,400,000
36,606,601
 1.75% 1/31/29
 
76,700,000
68,185,102
 1.75% 11/15/29
 
21,907,000
19,215,691
 1.875% 8/31/24
 
1,000
983
 1.875% 6/30/26
 
30,005,000
28,271,508
 1.875% 7/31/26
 
63,142,000
59,358,413
 1.875% 2/28/27
 
71,600,000
66,520,875
 1.875% 2/28/29
 
2,900,000
2,589,723
 1.875% 2/15/32
 
128,600,000
107,963,725
 2% 2/15/25
 
6,597,000
6,406,305
 2% 8/15/25
 
54,627,000
52,480,329
 2% 11/15/26
 
30,050,000
28,184,787
 2.125% 5/15/25
 
5,400,000
5,224,711
 2.125% 5/31/26
 
37,900,000
35,942,821
 2.25% 4/30/24
 
1,000
995
 2.25% 11/15/25
 
54,523,000
52,320,782
 2.25% 2/15/27
 
44,880,000
42,197,719
 2.25% 8/15/27
 
28,284,000
26,374,830
 2.25% 11/15/27
 
43,000,000
39,934,570
 2.375% 4/30/26
 
44,609,000
42,598,110
 2.375% 5/15/27
 
7,901,000
7,426,631
 2.375% 5/15/29
 
93,199,000
85,011,322
 2.5% 2/28/26
 
2,000
1,920
 2.625% 3/31/25
 
16,295,000
15,890,171
 2.625% 4/15/25
 
118,500,000
115,463,438
 2.625% 12/31/25
 
83,200,000
80,219,750
 2.625% 1/31/26
 
28,504,000
27,456,255
 2.625% 5/31/27
 
40,400,000
38,241,125
 2.625% 2/15/29
 
76,744,000
71,111,110
 2.625% 7/31/29
 
29,600,000
27,260,906
 2.75% 2/28/25
 
16,080,000
15,723,225
 2.75% 5/15/25
 
11,800,000
11,501,313
 2.75% 6/30/25
 
89,960,000
87,545,839
 2.75% 8/31/25
 
17,437,000
16,918,658
 2.75% 4/30/27
 
83,900,000
79,832,817
 2.75% 7/31/27
 
12,400,000
11,762,563
 2.75% 2/15/28
 
86,418,200
81,476,159
 2.75% 5/31/29
 
53,900,000
50,070,152
 2.75% 8/15/32
 
129,700,000
115,792,715
 2.875% 4/30/25
 
80,986,000
79,097,381
 2.875% 5/31/25
 
5,889,000
5,745,226
 2.875% 6/15/25
 
56,500,000
55,074,258
 2.875% 7/31/25
 
120,897,000
117,676,229
 2.875% 11/30/25
 
93,000,000
90,148,242
 2.875% 5/15/28
 
113,885,000
107,607,979
 2.875% 8/15/28
 
92,876,000
87,528,375
 2.875% 4/30/29
 
74,400,000
69,613,406
 2.875% 5/15/32
 
201,400,000
182,030,983
 3% 7/15/25
 
28,400,000
27,704,422
 3% 9/30/25
 
81,060,000
78,881,513
 3% 10/31/25
 
72,984,000
70,954,133
 3.125% 8/15/25
 
31,000,000
30,267,383
 3.125% 8/31/27
 
9,600,000
9,211,875
 3.125% 11/15/28
 
26,503,000
25,196,485
 3.125% 8/31/29
 
12,300,000
11,608,125
 3.25% 6/30/27
 
46,500,000
44,881,582
 3.25% 6/30/29
 
51,100,000
48,608,875
 3.375% 5/15/33
 
146,700,000
136,855,054
 3.5% 2/15/33
 
151,300,000
142,724,363
 3.625% 3/31/28
 
128,600,000
125,239,321
 3.75% 12/31/28
 
182,200,000
178,057,796
 3.75% 6/30/30
 
76,200,000
73,958,649
 3.875% 1/15/26
 
34,100,000
33,612,476
 3.875% 11/30/27
 
6,500,000
6,392,090
 3.875% 12/31/27
 
35,600,000
34,999,578
 3.875% 9/30/29
 
4,900,000
4,801,617
 3.875% 11/30/29
 
32,200,000
31,539,649
 3.875% 12/31/29
 
69,900,000
68,450,121
 3.875% 8/15/33
 
152,600,000
148,045,844
 4% 12/15/25
 
53,800,000
53,142,211
 4% 2/15/26
 
82,200,000
81,220,664
 4% 1/15/27
 
132,200,000
130,650,781
 4% 1/31/29 (b)
 
65,200,000
64,446,125
 4% 10/31/29
 
16,600,000
16,363,320
 4% 2/28/30
 
28,500,000
28,071,387
 4% 7/31/30
 
96,800,000
95,272,375
 4% 1/31/31
 
130,300,000
128,182,625
 4% 2/15/34
 
68,000,000
66,671,875
 4.125% 9/30/27
 
94,400,000
93,636,687
 4.125% 7/31/28
 
123,300,000
122,437,863
 4.125% 8/31/30
 
74,800,000
74,125,047
 4.125% 11/15/32
 
112,900,000
111,704,847
 4.25% 10/15/25
 
7,500,000
7,439,648
 4.25% 12/31/25
 
137,800,000
136,723,823
 4.375% 8/15/26
 
125,600,000
125,182,969
 4.375% 12/15/26
 
66,000,000
65,865,938
 4.375% 8/31/28
 
122,400,000
122,792,062
 4.375% 11/30/28
 
117,700,000
118,196,547
 4.375% 11/30/30
 
35,900,000
36,090,719
 4.5% 11/15/25
 
13,300,000
13,249,086
 4.5% 7/15/26
 
107,600,000
107,524,344
 4.5% 11/15/33
 
159,600,000
162,617,438
 4.625% 6/30/25
 
94,800,000
94,500,047
 4.625% 10/15/26
 
118,500,000
118,888,828
 4.625% 9/30/30
 
104,700,000
106,736,742
 4.875% 10/31/28
 
85,100,000
87,180,961
 4.875% 10/31/30
 
83,800,000
86,628,250
 5% 10/31/25
 
133,700,000
134,214,852
 
 
 
 
 
TOTAL U.S. GOVERNMENT AND GOVERNMENT AGENCY OBLIGATIONS
 (Cost $16,794,223,255)
 
 
 
15,674,485,295
 
 
 
 
Money Market Funds - 2.0%
 
 
Shares
Value ($)
 
Fidelity Cash Central Fund 5.39% (c)
 
202,034,345
202,074,752
Fidelity Securities Lending Cash Central Fund 5.39% (c)(d)
 
117,887,970
117,899,759
 
TOTAL MONEY MARKET FUNDS
 (Cost $319,974,511)
 
 
319,974,511
 
 
 
 
 
TOTAL INVESTMENT IN SECURITIES - 101.0%
 (Cost $17,114,197,766)
 
 
 
15,994,459,806
NET OTHER ASSETS (LIABILITIES) - (1.0)%  
(151,221,194)
NET ASSETS - 100.0%
15,843,238,612
 
 
 
Legend
 
(a)
Amount is stated in United States dollars unless otherwise noted.
 
(b)
Security or a portion of the security is on loan at period end.
 
(c)
Affiliated fund that is generally available only to investment companies and other accounts managed by Fidelity Investments. The rate quoted is the annualized seven-day yield of the fund at period end. A complete unaudited listing of the fund's holdings as of its most recent quarter end is available upon request. In addition, each Fidelity Central Fund's financial statements, which are not covered by the Fund's Report of Independent Registered Public Accounting Firm, are available on the SEC's website or upon request.
 
(d)
Investment made with cash collateral received from securities on loan.
 
 
 
Affiliated Central Funds
 
Fiscal year to date information regarding the Fund's investments in Fidelity Central Funds, including the ownership percentage, is presented below.
 
 
Affiliate
Value,
beginning
of period ($)
Purchases ($)
Sales
Proceeds ($)
Dividend
Income ($)
Realized
Gain (loss) ($)
Change in
Unrealized
appreciation
(depreciation) ($)
Value,
end
of period ($)
% ownership,
end
of period
Fidelity Cash Central Fund 5.39%
58,458,024
1,556,665,553
1,413,048,825
1,860,059
-
-
202,074,752
0.4%
Fidelity Securities Lending Cash Central Fund 5.39%
104,033,885
1,383,044,132
1,369,178,258
96,603
-
-
117,899,759
0.4%
Total
162,491,909
2,939,709,685
2,782,227,083
1,956,662
-
-
319,974,511
 
 
 
 
 
 
 
 
 
 
Amounts in the dividend income column in the above table include any capital gain distributions from underlying funds, which are presented in the corresponding line item in the Statement of Operations, if applicable.
 
Amounts in the dividend income column for Fidelity Securities Lending Cash Central Fund represents the income earned on investing cash collateral, less rebates paid to borrowers and any lending agent fees associated with the loan, plus any premium payments received for lending certain types of securities.
 
Amounts included in the purchases and sales proceeds columns may include in-kind transactions, if applicable.
 
Investment Valuation
 
The following is a summary of the inputs used, as of February 29, 2024, involving the Fund's assets and liabilities carried at fair value. The inputs or methodology used for valuing securities may not be an indication of the risk associated with investing in those securities. For more information on valuation inputs, and their aggregation into the levels used below, please refer to the Investment Valuation section in the accompanying Notes to Financial Statements.
 
Valuation Inputs at Reporting Date:
Description
Total ($)
Level 1 ($)
Level 2 ($)
Level 3 ($)
 Investments in Securities:
 
 
 
 
 U.S. Government and Government Agency Obligations
15,674,485,295
-
15,674,485,295
-
  Money Market Funds
319,974,511
319,974,511
-
-
 Total Investments in Securities:
15,994,459,806
319,974,511
15,674,485,295
-
Financial Statements
Statement of Assets and Liabilities
 
 
 
 
 
 
 
 
Assets
 
 
 
 
Investment in securities, at value  (including  securities loaned of $115,342,123) - See accompanying schedule:
 
 
 
 
Unaffiliated issuers (cost $16,794,223,255)
$
15,674,485,295
 
 
Fidelity Central Funds (cost $319,974,511)
319,974,511
 
 
 
 
 
 
 
 
 
 
 
 
Total Investment in Securities (cost $17,114,197,766)
 
 
$
15,994,459,806
Receivable for investments sold
 
 
205,097,188
Receivable for fund shares sold
 
 
219,717,703
Interest receivable
 
 
80,748,050
Distributions receivable from Fidelity Central Funds
 
 
370,689
Prepaid expenses
 
 
8,982
Receivable from investment adviser for expense reductions
 
 
645,886
  Total assets
 
 
16,501,048,304
Liabilities
 
 
 
 
Payable for investments purchased
$
528,334,609
 
 
Payable for fund shares redeemed
9,049,178
 
 
Distributions payable
1,622,561
 
 
Accrued management fee
490,073
 
 
Other payables and accrued expenses
413,512
 
 
Collateral on securities loaned
117,899,759
 
 
  Total Liabilities
 
 
 
657,809,692
Net Assets  
 
 
$
15,843,238,612
Net Assets consist of:
 
 
 
 
Paid in capital
 
 
$
17,874,420,228
Total accumulated earnings (loss)
 
 
 
(2,031,181,616)
Net Assets
 
 
$
15,843,238,612
Net Asset Value, offering price and redemption price per share ($15,843,238,612 ÷ 1,829,995,396 shares)
 
 
$
8.66
Statement of Operations
 
 
 
Year ended
Investment Income
 
 
 
 
Interest  
 
 
$
420,437,429
Income from Fidelity Central Funds (including $96,603 from security lending)
 
 
1,956,662
 Total Income
 
 
 
422,394,091
Expenses
 
 
 
 
Management fee
$
5,630,277
 
 
Custodian fees and expenses
120,208
 
 
Independent trustees' fees and expenses
45,855
 
 
Registration fees
813,794
 
 
Audit
60,665
 
 
Legal
8,284
 
 
Miscellaneous
69,815
 
 
 Total expenses before reductions
 
6,748,898
 
 
 Expense reductions
 
(2,473,221)
 
 
 Total expenses after reductions
 
 
 
4,275,677
Net Investment income (loss)
 
 
 
418,118,414
Realized and Unrealized Gain (Loss)
 
 
 
 
Net realized gain (loss) on:
 
 
 
 
 Investment Securities:
 
 
 
 
   Unaffiliated issuers  
 
(414,743,660)
 
 
Total net realized gain (loss)
 
 
 
(414,743,660)
Change in net unrealized appreciation (depreciation) on investment securities
 
 
 
231,592,953
Net gain (loss)
 
 
 
(183,150,707)
Net increase (decrease) in net assets resulting from operations
 
 
$
234,967,707
Statement of Changes in Net Assets
 
 
Year ended
 
Year ended
Increase (Decrease) in Net Assets
 
 
 
 
Operations
 
 
 
Net investment income (loss)
$
418,118,414
$
263,915,621
Net realized gain (loss)
 
(414,743,660)
 
 
(563,513,094)
 
Change in net unrealized appreciation (depreciation)
 
231,592,953
 
(1,059,635,332)
 
Net increase (decrease) in net assets resulting from operations
 
234,967,707
 
 
(1,359,232,805)
 
Distributions to shareholders
 
(313,253,523)
 
 
(209,327,205)
 
 
 
 
 
 
Share transactions
 
 
 
 
Proceeds from sales of shares
 
8,204,835,452
 
13,241,194,566
  Reinvestment of distributions
 
281,774,224
 
 
182,738,336
 
Cost of shares redeemed
 
(6,022,265,993)
 
(9,625,546,014)
 
 
 
 
 
  Net increase (decrease) in net assets resulting from share transactions
 
2,464,343,683
 
 
3,798,386,888
 
Total increase (decrease) in net assets
 
2,386,057,867
 
 
2,229,826,878
 
 
 
 
 
 
Net Assets
 
 
 
 
Beginning of period
 
13,457,180,745
 
11,227,353,867
 
End of period
$
15,843,238,612
$
13,457,180,745
 
 
 
 
 
Other Information
 
 
 
 
Shares
 
 
 
 
Sold
 
941,510,346
 
1,470,547,195
  Issued in reinvestment of distributions
 
32,477,756
 
 
20,547,113
 
Redeemed
 
(698,661,878)
 
(1,083,249,754)
Net increase (decrease)
 
275,326,224
 
407,844,554
 
 
 
 
 
 
Financial Highlights
Fidelity® SAI U.S. Treasury Bond Index Fund
 
Years ended February 28,
 
2024 A 
 
2023 
 
2022  
 
2021 
 
2020 A
  Selected Per-Share Data 
 
 
 
 
 
 
 
 
 
 
  Net asset value, beginning of period
$
8.66
$
9.79
$
10.10
$
10.60
$
9.65
  Income from Investment Operations
 
 
 
 
 
 
 
 
 
 
     Net investment income (loss) B,C
 
.257
 
.184
 
.106
 
.168
 
.229
     Net realized and unrealized gain (loss)
 
(.063)
 
(1.170)
 
(.316)
 
(.191)
 
.937
  Total from investment operations
 
.194  
 
(.986)  
 
(.210)  
 
(.023)  
 
1.166
  Distributions from net investment income
 
(.194)
 
(.144)
 
(.098)
 
(.175)
 
(.216)
  Distributions from net realized gain
 
-
 
-
 
(.002)
 
(.302)
 
-
     Total distributions
 
(.194)
 
(.144)
 
(.100)
 
(.477)
 
(.216)
  Net asset value, end of period
$
8.66
$
8.66
$
9.79
$
10.10
$
10.60
 Total Return D
 
2.25%
 
(10.10)%
 
(2.09)%
 
(.33)%
 
12.21%
 Ratios to Average Net Assets C,E,F
 
 
 
 
 
 
 
 
 
 
    Expenses before reductions
 
.05%
 
.05%
 
.05%
 
.05%
 
.08%
    Expenses net of fee waivers, if any
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Expenses net of all reductions
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Net investment income (loss)
 
2.97%
 
2.05%
 
1.06%
 
1.56%
 
2.27%
 Supplemental Data
 
 
 
 
 
 
 
 
 
 
    Net assets, end of period (000 omitted)
$
15,843,239
$
13,457,181
$
11,227,354
$
9,575,368
$
9,284,624
    Portfolio turnover rate G
 
37%
 
60%
 
45%
 
167%
 
23%
 
AFor the year ended February 29.
 
BCalculated based on average shares outstanding during the period.
 
CNet investment income (loss) is affected by the timing of the declaration of dividends by any underlying mutual funds or exchange-traded funds (ETFs). Net investment income (loss) of any mutual funds or ETFs is not included in the Fund's net investment income (loss) ratio.
 
DTotal returns would have been lower if certain expenses had not been reduced during the applicable periods shown.
 
EFees and expenses of any underlying mutual funds or exchange-traded funds (ETFs) are not included in the Fund's expense ratio. The Fund indirectly bears its proportionate share of these expenses. For additional expense information related to investments in Fidelity Central Funds, please refer to the "Investments in Fidelity Central Funds" note found in the Notes to Financial Statements section of the most recent Annual or Semi-Annual report.
 
FExpense ratios reflect operating expenses of the class. Expenses before reductions do not reflect amounts reimbursed, waived, or reduced through arrangements with the investment adviser, brokerage services, or other offset arrangements, if applicable, and do not represent the amount paid by the class during periods when reimbursements, waivers or reductions occur.
 
GAmount does not include the portfolio activity of any underlying mutual funds or exchange-traded funds (ETFs).
 
Notes to Financial Statements
For the period ended February 29, 2024
 
1. Organization.
Fidelity SAI U.S. Treasury Bond Index Fund (the Fund) is a fund of Fidelity Salem Street Trust (the Trust) and is authorized to issue an unlimited number of shares. Shares are offered exclusively to certain clients of Fidelity Management & Research Company LLC (FMR) or its affiliates. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Massachusetts business trust.
2. Investments in Fidelity Central Funds.
Funds may invest in Fidelity Central Funds, which are open-end investment companies generally available only to other investment companies and accounts managed by the investment adviser and its affiliates. The Schedule of Investments lists any Fidelity Central Funds held as an investment as of period end, but does not include the underlying holdings of each Fidelity Central Fund. An investing fund indirectly bears its proportionate share of the expenses of the underlying Fidelity Central Funds.
 
Based on its investment objective, each Fidelity Central Fund may invest or participate in various investment vehicles or strategies that are similar to those of the investing fund. These strategies are consistent with the investment objectives of the investing fund and may involve certain economic risks which may cause a decline in value of each of the Fidelity Central Funds and thus a decline in the value of the investing fund.
 
Fidelity Central Fund
Investment Manager
Investment Objective
Investment Practices
Expense RatioA
Fidelity Money Market Central Funds
Fidelity Management & Research Company LLC (FMR)
Each fund seeks to obtain a high level of current income consistent with the preservation of capital and liquidity.
Short-term Investments
Less than .005%
 
A Expenses expressed as a percentage of average net assets and are as of each underlying Central Fund's most recent annual or semi-annual shareholder report.
 
A complete unaudited list of holdings for each Fidelity Central Fund is available upon request or at the Securities and Exchange Commission website at www.sec.gov. In addition, the financial statements of the Fidelity Central Funds which contain the significant accounting policies (including investment valuation policies) of those funds, and are not covered by the Report of Independent Registered Public Accounting Firm, are available on the Securities and Exchange Commission website or upon request.
3. Significant Accounting Policies.
The Fund is an investment company and applies the accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies. The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP), which require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from those estimates. Subsequent events, if any, through the date that the financial statements were issued have been evaluated in the preparation of the financial statements. The Fund's Schedule of Investments lists any underlying mutual funds or exchange-traded funds (ETFs) but does not include the underlying holdings of these funds. The following summarizes the significant accounting policies of the Fund:
 
Investment Valuation. Investments are valued as of 4:00 p.m. Eastern time on the last calendar day of the period. The Board of Trustees (the Board) has designated the Fund's investment adviser as the valuation designee responsible for the fair valuation function and performing fair value determinations as needed. The investment adviser has established a Fair Value Committee (the Committee) to carry out the day-to-day fair valuation responsibilities and has adopted policies and procedures to govern the fair valuation process and the activities of the Committee. In accordance with these fair valuation policies and procedures, which have been approved by the Board, the Fund attempts to obtain prices from one or more third party pricing services or brokers to value its investments. When current market prices, quotations or currency exchange rates are not readily available or reliable, investments will be fair valued in good faith by the Committee, in accordance with the policies and procedures. Factors used in determining fair value vary by investment type and may include market or investment specific events, transaction data, estimated cash flows, and market observations of comparable investments. The frequency that the fair valuation procedures are used cannot be predicted and they may be utilized to a significant extent. The Committee manages the Fund's fair valuation practices and maintains the fair valuation policies and procedures. The Fund's investment adviser reports to the Board information regarding the fair valuation process and related material matters.
 
The Fund categorizes the inputs to valuation techniques used to value its investments into a disclosure hierarchy consisting of three levels as shown below:
 
Level 1 - unadjusted quoted prices in active markets for identical investments
Level 2 - other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, etc.)
Level 3 - unobservable inputs (including the Fund's own assumptions based on the best information available)
 
Valuation techniques used to value the Fund's investments by major category are as follows:
 
Debt securities, including restricted securities, are valued based on evaluated prices received from third party pricing services or from brokers who make markets in such securities. U.S. government and government agency obligations are valued by pricing services who utilize matrix pricing which considers yield or price of bonds of comparable quality, coupon, maturity and type or by broker-supplied prices. When independent prices are unavailable or unreliable, debt securities may be valued utilizing pricing methodologies which consider similar factors that would be used by third party pricing services. Debt securities are generally categorized as Level 2 in the hierarchy but may be Level 3 depending on the circumstances.
 
Investments in open-end mutual funds, including the Fidelity Central Funds, are valued at their closing net asset value (NAV) each business day and are categorized as Level 1 in the hierarchy.
 
Changes in valuation techniques may result in transfers in or out of an assigned level within the disclosure hierarchy. The aggregate value of investments by input level as of February 29, 2024 is included at the end of the Fund's Schedule of Investments.
 
Investment Transactions and Income. For financial reporting purposes, the Fund's investment holdings and NAV include trades executed through the end of the last business day of the period. The NAV per share for processing shareholder transactions is calculated as of the close of business of the New York Stock Exchange (NYSE), normally 4:00 p.m. Eastern time and includes trades executed through the end of the prior business day. Gains and losses on securities sold are determined on the basis of identified cost. Income and capital gain distributions from Fidelity Central Funds, if any, are recorded on the ex-dividend date. Interest income is accrued as earned and includes coupon interest and amortization of premium and accretion of discount on debt securities as applicable.
 
Expenses. Expenses directly attributable to a fund are charged to that fund. Expenses attributable to more than one fund are allocated among the respective funds on the basis of relative net assets or other appropriate methods. Expenses included in the accompanying financial statements reflect the expenses of that fund and do not include any expenses associated with any underlying mutual funds or exchange-traded funds. Although not included in a fund's expenses, a fund indirectly bears its proportionate share of these expenses through the net asset value of each underlying mutual fund or exchange-traded fund. Expense estimates are accrued in the period to which they relate and adjustments are made when actual amounts are known.
 
Income Tax Information and Distributions to Shareholders. Each year, the Fund intends to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code, including distributing substantially all of its taxable income and realized gains. As a result, no provision for U.S. Federal income taxes is required. As of February 29, 2024, the Fund did not have any unrecognized tax benefits in the financial statements; nor is the Fund aware of any tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. The Fund files a U.S. federal tax return, in addition to state and local tax returns as required. The Fund's federal income tax returns are subject to examination by the Internal Revenue Service (IRS) for a period of three fiscal years after they are filed. State and local tax returns may be subject to examination for an additional fiscal year depending on the jurisdiction.
 
Distributions are declared and recorded daily and paid monthly from net investment income. Distributions from realized gains, if any, are declared and recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP.
 
Capital accounts within the financial statements are adjusted for permanent book-tax differences. These adjustments have no impact on net assets or the results of operations. Capital accounts are not adjusted for temporary book-tax differences which will reverse in a subsequent period.
 
Book-tax differences are primarily due to market discount, capital loss carryforwards and losses deferred due to wash sales.
 
As of period end, the cost and unrealized appreciation (depreciation) in securities, and derivatives if applicable, for federal income tax purposes were as follows:
 
 
 
Gross unrealized appreciation
$44,854,961
Gross unrealized depreciation
(1,044,548,909)
Net unrealized appreciation (depreciation)
$(999,693,948)
Tax Cost
$16,994,153,754
 
 
 
The tax-based components of distributable earnings as of period end were as follows:
 
Undistributed tax-exempt income
$1,663,050
Undistributed ordinary income
$(1,033,150,718)
Net unrealized appreciation (depreciation) on securities and other investments
$(999,693,948)
 
Capital loss carryforwards are only available to offset future capital gains of the Fund to the extent provided by regulations and may be limited. The capital loss carryforward information presented below, including any applicable limitation, is estimated as of fiscal period end and is subject to adjustment.
 
 Short-term
$(368,834,696)
 Long-term
(664,316,022)
Total capital loss carryforward
$(1,033,150,718)
 
 
The tax character of distributions paid was as follows:
 
 
Ordinary Income
$313,253,523
$209,327,205
4. Fees and Other Transactions with Affiliates.
Management Fee. Fidelity Management & Research Company LLC (the investment adviser) and its affiliates provide the Fund with investment management related services for which the Fund pays a monthly management fee that is based on an annual rate of .04% of the Fund's average net assets.
 
Interfund Trades. Funds may purchase from or sell securities to other Fidelity Funds under procedures adopted by the Board. The procedures have been designed to ensure these interfund trades are executed in accordance with Rule 17a-7 of the 1940 Act. Any interfund trades are included within the respective purchases and sales amounts shown in the Purchases and Sales of Investments note. During the period, there were no interfund trades.
 
Subsequent Event - Sub-Advisory Arrangements. Effective March 1, 2024, the Fund's sub-advisory agreements with FMR Investment Management (UK) Limited, Fidelity Management & Research (Hong Kong) Limited, and Fidelity Management & Research (Japan) Limited will be amended to provide that the investment adviser will pay each sub-adviser monthly fees equal to 110% of the sub-adviser's costs for providing sub-advisory services.
5. Committed Line of Credit.
Certain Funds participate with other funds managed by the investment adviser or an affiliate in a $4.25 billion credit facility (the "line of credit") to be utilized for temporary or emergency purposes to fund shareholder redemptions or for other short-term liquidity purposes. The participating funds have agreed to pay commitment fees on their pro-rata portion of the line of credit, which are reflected in Miscellaneous expenses on the Statement of Operations, and are listed below. During the period, there were no borrowings on this line of credit.
 
 
Amount
Fidelity SAI U.S. Treasury Bond Index Fund
$24,168
6. Security Lending.
Funds lend portfolio securities from time to time in order to earn additional income. Lending agents are used, including National Financial Services (NFS), an affiliate of the investment adviser. Pursuant to a securities lending agreement, NFS will receive a fee, which is capped at 9.9% of a fund's daily lending revenue, for its services as lending agent. A fund may lend securities to certain qualified borrowers, including NFS. On the settlement date of the loan, a fund receives collateral (in the form of U.S. Treasury obligations, letters of credit and/or cash) against the loaned securities and maintains collateral in an amount not less than 100% of the market value of the loaned securities during the period of the loan. The market value of the loaned securities is determined at the close of business of a fund and any additional required collateral is delivered to a fund on the next business day. A fund or borrower may terminate the loan at any time, and if the borrower defaults on its obligation to return the securities loaned because of insolvency or other reasons, a fund may apply collateral received from the borrower against the obligation. A fund may experience delays and costs in recovering the securities loaned. Any cash collateral received is invested in the Fidelity Securities Lending Cash Central Fund. Any loaned securities are identified as such in the Schedule of Investments, and the value of loaned securities and cash collateral at period end, as applicable, are presented in the Statement of Assets and Liabilities. Security lending income represents the income earned on investing cash collateral, less rebates paid to borrowers and any lending agent fees associated with the loan, plus any premium payments received for lending certain types of securities. Security lending income is presented in the Statement of Operations as a component of income from Fidelity Central Funds. Affiliated security lending activity, if any, was as follows:
 
 
Total Security Lending Fees Paid to NFS
Security Lending Income From Securities Loaned to NFS
Value of Securities Loaned to NFS at Period End
Fidelity SAI U.S. Treasury Bond Index Fund
$10,504
$-
$-
7. Expense Reductions.
The investment adviser contractually agreed to reimburse the Fund to the extent annual operating expenses exceeded .03% of average net assets. This reimbursement will remain in place through June 30, 2025. Some expenses, for example the compensation of the independent Trustees, and certain miscellaneous expenses such as proxy and shareholder meeting expenses, are excluded from this reimbursement. During the period this reimbursement reduced the Fund's expenses by $2,472,744.
 
Through arrangements with the Fund's custodian, credits realized as a result of certain uninvested cash balances were used to reduce the Fund's expenses by $477.
8. Other.
A fund's organizational documents provide former and current trustees and officers with a limited indemnification against liabilities arising in connection with the performance of their duties to the fund. In the normal course of business, a fund may also enter into contracts that provide general indemnifications. A fund's maximum exposure under these arrangements is unknown as this would be dependent on future claims that may be made against a fund. The risk of material loss from such claims is considered remote.
 
At the end of the period, the following mutual funds managed by the investment adviser or its affiliates were the owners of record of 10% or more of the total outstanding shares.
 
 
Strategic Advisers Core Income Fund
Strategic Advisers Fidelity Core Income Fund
Fidelity SAI U.S. Treasury Bond Index Fund
14%
39%
 
Mutual funds managed by the investment adviser or its affiliates, in aggregate, were the owners of record of more than 20% of the total outstanding shares.
 
Fund
% of shares held
Fidelity SAI U.S. Treasury Bond Index Fund
53%
9. Risk and Uncertainties.
Many factors affect a fund's performance. Developments that disrupt global economies and financial markets, such as pandemics, epidemics, outbreaks of infectious diseases, war, terrorism, and environmental disasters, may significantly affect a fund's investment performance. The effects of these developments to a fund will be impacted by the types of securities in which a fund invests, the financial condition, industry, economic sector, and geographic location of an issuer, and a fund's level of investment in the securities of that issuer. Significant concentrations in security types, issuers, industries, sectors, and geographic locations may magnify the factors that affect a fund's performance.
 
 
 
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Fidelity Salem Street Trust and the Shareholders of Fidelity SAI U.S. Treasury Bond Index Fund:
Opinion on the Financial Statements and Financial Highlights
We have audited the accompanying statement of assets and liabilities of Fidelity SAI U.S. Treasury Bond Index Fund (the "Fund"), a fund of Fidelity Salem Street Trust, including the schedule of investments, as of February 29, 2024, the related statement of operations for the year then ended, the statement of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended, and the related notes. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Fund as of February 29, 2024, and the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on the Fund's financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements and financial highlights. Our procedures included confirmation of securities owned as of February 29, 2024, by correspondence with the custodian and brokers; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.
/s/ Deloitte & Touche LLP
Boston, Massachusetts
April 10, 2024
We have served as the auditor of one or more of the Fidelity investment companies since 1999.
Trustees and Officers
TRUSTEES AND OFFICERS
The Trustees, Members of the Advisory Board (if any), and officers of the trust and fund, as applicable, are listed below. The Board of Trustees governs the fund and is responsible for protecting the interests of shareholders. The Trustees are experienced executives who meet periodically throughout the year to oversee the fund's activities, review contractual arrangements with companies that provide services to the fund, oversee management of the risks associated with such activities and contractual arrangements, and review the fund's performance. Except for Jonathan Chiel, each of the Trustees oversees 315 funds. Mr. Chiel oversees 192 funds.
The Trustees hold office without limit in time except that (a) any Trustee may resign; (b) any Trustee may be removed by written instrument, signed by at least two-thirds of the number of Trustees prior to such removal; (c) any Trustee who requests to be retired or who has become incapacitated by illness or injury may be retired by written instrument signed by a majority of the other Trustees; and (d) any Trustee may be removed at any special meeting of shareholders by a two-thirds vote of the outstanding voting securities of the trust. Each Trustee who is not an interested person (as defined in the 1940 Act) of the trust and the fund is referred to herein as an Independent Trustee. Each Independent Trustee shall retire not later than the last day of the calendar year in which his or her 75th birthday occurs. The Independent Trustees may waive this mandatory retirement age policy with respect to individual Trustees. Officers and Advisory Board Members hold office without limit in time, except that any officer or Advisory Board Member may resign or may be removed by a vote of a majority of the Trustees at any regular meeting or any special meeting of the Trustees. Except as indicated, each individual has held the office shown or other offices in the same company for the past five years.
The fund's Statement of Additional Information (SAI) includes more information about the Trustees. To request a free copy, call Fidelity at 1-800-544-3455.
Experience, Skills, Attributes, and Qualifications of the Trustees. The Governance and Nominating Committee has adopted a statement of policy that describes the experience, qualifications, attributes, and skills that are necessary and desirable for potential Independent Trustee candidates (Statement of Policy). The Board believes that each Trustee satisfied at the time he or she was initially elected or appointed a Trustee, and continues to satisfy, the standards contemplated by the Statement of Policy. The Governance and Nominating Committee also engages professional search firms to help identify potential Independent Trustee candidates who have the experience, qualifications, attributes, and skills consistent with the Statement of Policy. From time to time, additional criteria based on the composition and skills of the current Independent Trustees, as well as experience or skills that may be appropriate in light of future changes to board composition, business conditions, and regulatory or other developments, have also been considered by the professional search firms and the Governance and Nominating Committee. In addition, the Board takes into account the Trustees' commitment and participation in Board and committee meetings, as well as their leadership of standing and ad hoc committees throughout their tenure.
In determining that a particular Trustee was and continues to be qualified to serve as a Trustee, the Board has considered a variety of criteria, none of which, in isolation, was controlling. The Board believes that, collectively, the Trustees have balanced and diverse experience, qualifications, attributes, and skills, which allow the Board to operate effectively in governing the fund and protecting the interests of shareholders. Information about the specific experience, skills, attributes, and qualifications of each Trustee, which in each case led to the Board's conclusion that the Trustee should serve (or continue to serve) as a trustee of the fund, is provided below.
Board Structure and Oversight Function. Abigail P. Johnson is an interested person and currently serves as Chairman. The Trustees have determined that an interested Chairman is appropriate and benefits shareholders because an interested Chairman has a personal and professional stake in the quality and continuity of services provided to the fund. Independent Trustees exercise their informed business judgment to appoint an individual of their choosing to serve as Chairman, regardless of whether the Trustee happens to be independent or a member of management. The Independent Trustees have determined that they can act independently and effectively without having an Independent Trustee serve as Chairman and that a key structural component for assuring that they are in a position to do so is for the Independent Trustees to constitute a substantial majority for the Board. The Independent Trustees also regularly meet in executive session. Michael E. Kenneally serves as Chairman of the Independent Trustees and as such (i) acts as a liaison between the Independent Trustees and management with respect to matters important to the Independent Trustees and (ii) with management prepares agendas for Board meetings.
Fidelity® funds are overseen by different Boards of Trustees. The fund's Board oversees Fidelity's investment-grade bond, money market, asset allocation and certain equity funds, and other Boards oversee Fidelity's alternative investment, high income and other equity funds. The asset allocation funds may invest in Fidelity® funds that are overseen by such other Boards. The use of separate Boards, each with its own committee structure, allows the Trustees of each group of Fidelity® funds to focus on the unique issues of the funds they oversee, including common research, investment, and operational issues. On occasion, the separate Boards establish joint committees to address issues of overlapping consequences for the Fidelity® funds overseen by each Board.
The Trustees operate using a system of committees to facilitate the timely and efficient consideration of all matters of importance to the Trustees, the fund, and fund shareholders and to facilitate compliance with legal and regulatory requirements and oversight of the fund's activities and associated risks. The Board, acting through its committees, has charged FMR and its affiliates with (i) identifying events or circumstances the occurrence of which could have demonstrably adverse effects on the fund's business and/or reputation; (ii) implementing processes and controls to lessen the possibility that such events or circumstances occur or to mitigate the effects of such events or circumstances if they do occur; and (iii) creating and maintaining a system designed to evaluate continuously business and market conditions in order to facilitate the identification and implementation processes described in (i) and (ii) above. Because the day-to-day operations and activities of the fund are carried out by or through FMR, its affiliates, and other service providers, the fund's exposure to risks is mitigated but not eliminated by the processes overseen by the Trustees. While each of the Board's committees has responsibility for overseeing different aspects of the fund's activities, oversight is exercised primarily through the Operations and Audit Committees. In addition, an ad hoc Board committee of Independent Trustees has worked with FMR to enhance the Board's oversight of investment and financial risks, legal and regulatory risks, technology risks, and operational risks, including the development of additional risk reporting to the Board. Appropriate personnel, including but not limited to the fund's Chief Compliance Officer (CCO), FMR's internal auditor, the independent accountants, the fund's Treasurer and portfolio management personnel, make periodic reports to the Board's committees, as appropriate, including an annual review of Fidelity's risk management program for the Fidelity® funds. The responsibilities of each standing committee, including their oversight responsibilities, are described further under "Standing Committees of the Trustees."
Interested Trustees*:
Correspondence intended for a Trustee who is an interested person may be sent to Fidelity Investments, 245 Summer Street, Boston, Massachusetts 02210.
Name, Year of Birth; Principal Occupations and Other Relevant Experience+
Jonathan Chiel (1957)
Year of Election or Appointment: 2016
Trustee
Mr. Chiel also serves as Trustee of other Fidelity® funds. Mr. Chiel is Senior Counsel at Fidelity Investments (diversified financial services company, 2024-present). Previously, Mr. Chiel served as General Counsel (2012-2024) and Head of Legal, Risk and Compliance (2022-2024) for Fidelity Investments; Executive Vice President and General Counsel for FMR LLC (diversified financial services company, 2012-2024); Director and President of OH Company LLC (holding company, 2018-2024); General Counsel (2004-2012) and Senior Vice President and Deputy General Counsel (2000-2004) for John Hancock Financial Services; a partner with Choate, Hall & Stewart (law firm, 1996-2000); and an Assistant United States Attorney for the United States Attorney's Office of the District of Massachusetts (1986-1995), including Chief of the Criminal Division (1993-1995). Mr. Chiel is a director on the boards of the Harvard Law School Center on the Legal Profession and the U.S. Chamber Litigation Center.
Abigail P. Johnson (1961)
Year of Election or Appointment: 2009
Trustee
Chairman of the Board of Trustees
Ms. Johnson also serves as Trustee of other Fidelity® funds. Ms. Johnson serves as Chairman (2016-present), Chief Executive Officer (2014-present), and Director (2007-present) of FMR LLC (diversified financial services company), President of Fidelity Financial Services (2012-present) and President of Personal, Workplace and Institutional Services (2005-present). Ms. Johnson is Chairman and Director of Fidelity Management & Research Company LLC (investment adviser firm, 2011-present). Previously, Ms. Johnson served as Chairman and Director of FMR Co., Inc. (investment adviser firm, 2011-2019), Vice Chairman (2007-2016) and President (2013-2016) of FMR LLC, President and a Director of Fidelity Management & Research Company (2001-2005), a Trustee of other investment companies advised by Fidelity Management & Research Company, Fidelity Investments Money Management, Inc. (investment adviser firm), and FMR Co., Inc. (2001-2005), Senior Vice President of the Fidelity® funds (2001-2005), and managed a number of Fidelity® funds.
Jennifer Toolin McAuliffe (1959)
Year of Election or Appointment: 2016
Trustee
Ms. McAuliffe also serves as Trustee of other Fidelity® funds and as Trustee of Fidelity Charitable (2020-present). Previously, Ms. McAuliffe served as Co-Head of Fixed Income of Fidelity Investments Limited (now known as FIL Limited (FIL)) (diversified financial services company), Director of Research for FIL's credit and quantitative teams in London, Hong Kong and Tokyo and Director of Research for taxable and municipal bonds at Fidelity Investments Money Management, Inc. Ms. McAuliffe previously served as a member of the Advisory Board of certain Fidelity® funds (2016). Ms. McAuliffe was previously a lawyer at Ropes & Gray LLP and an international banker at Chemical Bank NA (now JPMorgan Chase & Co.). Ms. McAuliffe also currently serves as director or trustee of several not-for-profit entities.
Christine J. Thompson (1958)
Year of Election or Appointment: 2023
Trustee
Ms. Thompson also serves as a Trustee of other Fidelity® funds. Ms. Thompson serves as Leader of Advanced Technologies for Investment Management at Fidelity Investments (2018-present). Previously, Ms. Thompson served as Chief Investment Officer in the Bond group at Fidelity Management & Research Company (2010-2018) and held various other roles including Director of municipal bond portfolio managers and Portfolio Manager of certain Fidelity® funds.
* Determined to be an "Interested Trustee" by virtue of, among other things, his or her affiliation with the trust or various entities under common control with FMR.
+ The information includes the Trustee's principal occupation during the last five years and other information relating to the experience, attributes, and skills relevant to the Trustee's qualifications to serve as a Trustee, which led to the conclusion that the Trustee should serve as a Trustee for the fund.
Independent Trustees:
Correspondence intended for an Independent Trustee may be sent to Fidelity Investments, P.O. Box 55235, Boston, Massachusetts 02205-5235.
Name, Year of Birth; Principal Occupations and Other Relevant Experience+
Elizabeth S. Acton (1951)
Year of Election or Appointment: 2013
Trustee
Ms. Acton also serves as Trustee of other Fidelity® funds. Prior to her retirement, Ms. Acton served as Executive Vice President, Finance (2011-2012), Executive Vice President, Chief Financial Officer (2002-2011) and Treasurer (2004-2005) of Comerica Incorporated (financial services). Prior to joining Comerica, Ms. Acton held a variety of positions at Ford Motor Company (1983-2002), including Vice President and Treasurer (2000-2002) and Executive Vice President and Chief Financial Officer of Ford Motor Credit Company (1998-2000). Ms. Acton currently serves as a member of the Board and Audit and Finance Committees of Beazer Homes USA, Inc. (homebuilding, 2012-present). Ms. Acton previously served as a member of the Advisory Board of certain Fidelity® funds (2013-2016).
Laura M. Bishop (1961)
Year of Election or Appointment: 2023
Trustee
Ms. Bishop also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Prior to her retirement, Ms. Bishop held a variety of positions at United Services Automobile Association (2001-2020), including Executive Vice President and Chief Financial Officer (2014-2020) and Senior Vice President and Deputy Chief Financial Officer (2012-2014). Ms. Bishop currently serves as a member of the Audit Committee and Compensation and Personnel Committee (2021-present) of the Board of Directors of Korn Ferry (global organizational consulting). Previously, Ms. Bishop served as a Member of the Advisory Board of certain Fidelity® funds (2022-2023).    
Ann E. Dunwoody (1953)
Year of Election or Appointment: 2018
Trustee
General Dunwoody also serves as Trustee of other Fidelity® funds. General Dunwoody (United States Army, Retired) was the first woman in U.S. military history to achieve the rank of four-star general and prior to her retirement in 2012 held a variety of positions within the U.S. Army, including Commanding General, U.S. Army Material Command (2008-2012). General Dunwoody currently serves as a member of the Board, Chair of Nomination Committee and a member of the Corporate Governance Committee of Kforce Inc. (professional staffing services, 2016-present) and a member of the Board of Automattic Inc. (software engineering, 2018-present). Previously, General Dunwoody served as President of First to Four LLC (leadership and mentoring services, 2012-2022), a member of the Advisory Board and Nominating and Corporate Governance Committee of L3 Technologies, Inc. (communication, electronic, sensor and aerospace systems, 2013-2019) and a member of the Board and Audit and Sustainability and Corporate Responsibility Committees of Republic Services, Inc. (waste collection, disposal and recycling, 2013-2016). General Dunwoody also serves on several boards for non-profit organizations, including as a member of the Board, Chair of the Nomination and Governance Committee and a member of the Audit Committee of the Noble Reach Foundation (formerly Logistics Management Institute) (consulting non-profit, 2012-present) and a member of the Board of ThanksUSA (military family education non-profit, 2014-present). Previously, General Dunwoody served as a member of the Board of Florida Institute of Technology (2015-2022) and a member of the Council of Trustees for the Association of the United States Army (advocacy non-profit, 2013-2021). General Dunwoody previously served as a member of the Advisory Board of certain Fidelity® funds (2018).
Robert F. Gartland (1951)
Year of Election or Appointment: 2010
Trustee
Mr. Gartland also serves as Trustee of other Fidelity® funds. Prior to his retirement, Mr. Gartland held a variety of positions at Morgan Stanley (financial services, 1979-2007), including Managing Director (1987-2007) and Chase Manhattan Bank (1975-1978). Mr. Gartland previously served as Chairman and an investor in Gartland & Mellina Group Corp. (consulting, 2009-2019), as a member of the Board of National Securities Clearing Corporation (1993-1996) and as Chairman of TradeWeb (2003-2004).
Robert W. Helm (1957)
Year of Election or Appointment: 2023
Trustee
Mr. Helm also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Mr. Helm was formerly Deputy Chairman (2003-2020), partner (1991-2020) and an associate (1984-1991) of Dechert LLP (formerly Dechert Price & Rhoads). Mr. Helm currently serves on boards and committees of several not-for-profit organizations, including as a Trustee and member of the Executive Committee of the Baltimore Council on Foreign Affairs, a member of the Board of Directors of the St. Vincent de Paul Society of Baltimore and a member of the Life Guard Society of Mt. Vernon. Previously, Mr. Helm served as a Member of the Advisory Board of certain Fidelity® funds (2021-2023).     
Michael E. Kenneally (1954)
Year of Election or Appointment: 2009
Trustee
Chairman of the Independent Trustees
Mr. Kenneally also serves as Trustee of other Fidelity® funds and was Vice Chairman (2018-2021) of the Independent Trustees of certain Fidelity® funds. Prior to retirement in 2005, he was Chairman and Global Chief Executive Officer of Credit Suisse Asset Management, the worldwide fund management and institutional investment business of Credit Suisse Group. Previously, Mr. Kenneally was an Executive Vice President and the Chief Investment Officer for Bank of America. In this role, he was responsible for the investment management, strategy and products delivered to the bank's institutional, high-net-worth and retail clients. Earlier, Mr. Kenneally directed the organization's equity and quantitative research groups. He began his career as a research analyst and then spent more than a dozen years as a portfolio manager for endowments, pension plans and mutual funds. He earned the Chartered Financial Analyst (CFA) designation in 1991.     
Mark A. Murray (1954)
Year of Election or Appointment: 2016
Trustee
Mr. Murray also serves as Trustee of other Fidelity® funds. Previously, Mr. Murray served as Co-Chief Executive Officer (2013-2016), President (2006-2013) and Vice Chairman (2013-2020) of Meijer, Inc. Mr. Murray serves as a member of the Board (2009-present) and Public Policy and Responsibility Committee (2009-present) and Chair of the Nuclear Review Committee (2019-present) of DTE Energy Company (diversified energy company). Mr. Murray previously served as a member of the Board of Spectrum Health (not-for-profit health system, 2015-2019) and as a member of the Board and Audit Committee and Chairman of the Nominating and Corporate Governance Committee of Universal Forest Products, Inc. (manufacturer and distributor of wood and wood-alternative products, 2004-2016). Mr. Murray also serves as a member of the Board of many community and professional organizations. Mr. Murray previously served as a member of the Advisory Board of certain Fidelity® funds (2016).
Carol J. Zierhoffer (1960)
Year of Election or Appointment: 2023
Trustee
Ms. Zierhoffer also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Prior to her retirement, Ms. Zierhoffer held a variety of positions at Bechtel Corporation (engineering company, 2013-2019), including Principal Vice President and Chief Information Officer (2013-2016) and Senior Vice President and Chief Information Officer (2016-2019). Ms. Zierhoffer currently serves as a member of the Board of Directors, Audit Committee and Compensation Committee of Allscripts Healthcare Solutions, Inc. (healthcare technology, 2020-present) and as a member of the Board of Directors, Audit and Finance Committee and Nominating and Governance Committee of Atlas Air Worldwide Holdings, Inc. (aviation operating services, 2021-present). Previously, Ms. Zierhoffer served as a member of the Board of Directors and Audit Committee and as the founding Chair of the Information Technology Committee of MedAssets, Inc. (healthcare technology, 2013-2016), and as a Member of the Advisory Board of certain Fidelity® funds (2023).    
+ The information includes the Trustee's principal occupation during the last five years and other information relating to the experience, attributes, and skills relevant to the Trustee's qualifications to serve as a Trustee, which led to the conclusion that the Trustee should serve as a Trustee for the fund.
Advisory Board Members and Officers:
Correspondence intended for a Member of the Advisory Board (if any) may be sent to Fidelity Investments, P.O. Box 55235, Boston, Massachusetts 02205-5235. Correspondence intended for an officer may be sent to Fidelity Investments, 245 Summer Street, Boston, Massachusetts 02210.
Name, Year of Birth; Principal Occupations+
Lester Owens (1957)
Year of Election or Appointment: 2024
Member of the Advisory Board
Mr. Owens also serves as a Member of the Advisory Board of other Fidelity® funds. Prior to his retirement, Mr. Owens served as Senior Executive Vice President, Head of Operations, and member of the Operating Committee of Wells Fargo & Company (financial services, 2020-2023). Mr. Owens currently serves as Chairman of the Board of Directors of Robert Wood Johnson Barnabas Health, Inc. (academic healthcare system, 2022-present). Previously, Mr. Owens served as Senior Executive Vice President and Head of Operations at Bank of New York Mellon (financial services, 2019-2020) and held various roles at JPMorgan Chase & Co. (financial services, 2007-2019), including Managing Director for Wholesale Banking Operations. Mr. Owens also previously served as a member of the Board of Directors of the Depository Trust & Clearing Corporation (financial services, 2016) and as Chairman of the Board of Directors of the Clearing House Interbank Payments System (private clearing system, 2015-2016).        
Heather Bonner (1977)
Year of Election or Appointment: 2023
Assistant Treasurer
Ms. Bonner also serves as an officer of other funds. Ms. Bonner is a Senior Vice President (2022-present) and is an employee of Fidelity Investments (2022-present). Ms. Bonner serves as Senior Vice President, Vice President, Treasurer, or Director of certain Fidelity entities. Prior to joining Fidelity, Ms. Bonner served as Managing Director at AQR Capital Management (2013-2022) and was the Treasurer and Principal Financial Officer of the AQR Funds (2013-2022).
Craig S. Brown (1977)
Year of Election or Appointment: 2019
Assistant Treasurer
Mr. Brown also serves as an officer of other funds. Mr. Brown is a Vice President (2015-present) and is an employee of Fidelity Investments. Mr. Brown serves as Assistant Treasurer of FIMM, LLC (2021-present). Previously, Mr. Brown served as Assistant Treasurer of certain Fidelity® funds (2019-2022).     
John J. Burke III (1964)
Year of Election or Appointment: 2018
Chief Financial Officer
Mr. Burke also serves as Chief Financial Officer of other funds. Mr. Burke is Head of Fidelity Fund and Investment Operations (2018-present) and is an employee of Fidelity Investments. Mr. Burke serves as President, Executive Vice President, or Director of certain Fidelity entities. Previously Mr. Burke served as head of Asset Management Investment Operations (2012-2018).
Margaret Carey (1973)
Year of Election or Appointment: 2023
Secretary and Chief Legal Officer (CLO)
Ms. Carey also serves as an officer of other funds and as CLO of certain Fidelity entities. Ms. Carey is a Senior Vice President, Deputy General Counsel (2019-present) and is an employee of Fidelity Investments.        
David J. Carter (1973)
Year of Election or Appointment: 2020
Assistant Secretary
Mr. Carter also serves as Assistant Secretary of other funds. Mr. Carter is a Senior Vice President, Deputy General Counsel (2022-present) and is an employee of Fidelity Investments. Mr. Carter serves as Chief Legal Officer of Fidelity Investments Institutional Operations Company LLC - Shareholder Division (transfer agent, 2020-present).
Jonathan Davis (1968)
Year of Election or Appointment: 2010
Assistant Treasurer
Mr. Davis also serves as an officer of other funds. Mr. Davis is a Vice President (2006-present) and is an employee of Fidelity Investments. Mr. Davis serves as Assistant Treasurer or Director of certain Fidelity entities.        
Laura M. Del Prato (1964)
Year of Election or Appointment: 2018
President and Treasurer
Ms. Del Prato also serves as an officer of other funds. Ms. Del Prato is a Senior Vice President (2017-present) and is an employee of Fidelity Investments. Ms. Del Prato serves as Vice President or Assistant Treasurer of certain Fidelity entities. Previously, Ms. Del Prato served as President and Treasurer of The North Carolina Capital Management Trust: Cash Portfolio and Term Portfolio (2018-2020).     
Robin Foley (1964)
Year of Election or Appointment: 2023
Vice President
Ms. Foley also serves as Vice President of other funds. Ms. Foley serves as Head of Fidelity's Fixed Income division (2023-present) and is an employee of Fidelity Investments. Previously, Ms. Foley served as Chief Investment Officer of Bonds (2017-2023).     
Christopher M. Gouveia (1973)
Year of Election or Appointment: 2023
Chief Compliance Officer
Mr. Gouveia also serves as Chief Compliance Officer of other funds. Mr. Gouveia is a Senior Vice President of Asset Management Compliance (2019-present) and is an employee of Fidelity Investments. Mr. Gouveia serves as Compliance Officer of Fidelity Management Trust Company (2023-present). Previously, Mr. Gouveia served as Chief Compliance Officer of the North Carolina Capital Management Trust (2016-2019).          
Colm A. Hogan (1973)
Year of Election or Appointment: 2016
Assistant Treasurer
Mr. Hogan also serves as an officer of other funds. Mr. Hogan is a Vice President (2016-present) and is an employee of Fidelity Investments. Mr. Hogan serves as Assistant Treasurer of certain Fidelity entities. Previously, Mr. Hogan served as Deputy Treasurer of certain Fidelity® funds (2016-2020) and Assistant Treasurer of certain Fidelity® funds (2016-2018). 
Chris Maher (1972)
Year of Election or Appointment: 2013
Assistant Treasurer
Mr. Maher also serves as an officer of other funds. Mr. Maher is a Vice President (2008-present) and is an employee of Fidelity Investments. Mr. Maher serves as Assistant Treasurer of certain Fidelity entities. Previously, Mr. Maher served as Assistant Treasurer of certain funds (2013-2020).     
Brett Segaloff (1972)
Year of Election or Appointment: 2021
Anti-Money Laundering (AML) Officer
Mr. Segaloff also serves as AML Officer of other funds. Mr. Segaloff is a Vice President (2022-present) and is an employee of Fidelity Investments. Mr. Segaloff serves as Anti Money Laundering Compliance Officer or Anti Money Laundering/Bank Secrecy Act Compliance Officer of certain Fidelity entities.          
Stacie M. Smith (1974)
Year of Election or Appointment: 2013
Assistant Treasurer
Ms. Smith also serves as an officer of other funds. Ms. Smith is a Senior Vice President (2016-present) and is an employee of Fidelity Investments. Ms. Smith serves as Assistant Treasurer of certain Fidelity entities and has served in other fund officer roles.
Jim Wegmann (1979)
Year of Election or Appointment: 2021
Deputy Treasurer
Mr. Wegmann also serves as an officer of other funds. Mr. Wegmann is a Vice President (2016-present) and is an employee of Fidelity Investments. Mr. Wegmann serves as Assistant Treasurer of FIMM, LLC (2021-present). Previously, Mr. Wegmann served as Assistant Treasurer of certain Fidelity® funds (2019-2021).          
+ The information includes principal occupation during the last five years. 
Shareholder Expense Example  
As a shareholder, you incur two types of costs: (1) transaction costs, which may include sales charges (loads) on purchase payments or redemption proceeds, as applicable and (2) ongoing costs, which generally include management fees, distribution and/or service (12b-1) fees and other Fund expenses. This Example is intended to help you understand your ongoing costs (in dollars) of investing in a fund and to compare these costs with the ongoing costs of investing in other mutual funds.
 
The Example is based on an investment of $1,000 invested at the beginning of the period and held for the entire period (September 1, 2023 to February 29, 2024).
 
Actual Expenses
The first line of the accompanying table provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000.00 (for example, an $8,600 account value divided by $1,000.00 = 8.6), then multiply the result by the number in the first line for a class/Fund under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If any fund is a shareholder of any underlying mutual funds or exchange-traded funds (ETFs) (the Underlying Funds), such fund indirectly bears its proportional share of the expenses of the Underlying Funds in addition to the direct expenses incurred presented in the table. These fees and expenses are not included in the annualized expense ratio used to calculate the expense estimate in the table below.
 
Hypothetical Example for Comparison Purposes
The second line of the accompanying table provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. If any fund is a shareholder of any Underlying Funds, such fund indirectly bears its proportional share of the expenses of the Underlying Funds in addition to the direct expenses as presented in the table. These fees and expenses are not included in the annualized expense ratio used to calculate the expense estimate in the table below.
Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transaction costs. Therefore, the second line of the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher.
 
 
 
 
 
Annualized Expense Ratio- A
 
Beginning Account Value September 1, 2023
 
Ending Account Value February 29, 2024
 
Expenses Paid During Period- C September 1, 2023 to February 29, 2024
 
 
 
 
 
 
 
 
 
 
Fidelity® SAI U.S. Treasury Bond Index Fund
 
 
 
.03%
 
 
 
 
 
 
Actual
 
 
 
 
 
$ 1,000
 
$ 1,016.80
 
$ .15
Hypothetical-B
 
 
 
 
 
$ 1,000
 
$ 1,024.71
 
$ .15
 
A   Annualized expense ratio reflects expenses net of applicable fee waivers.
 
B   5% return per year before expenses
 
C   Expenses are equal to the annualized expense ratio, multiplied by the average account value over the period, multiplied by 182/ 366 (to reflect the one-half year period). The fees and expenses of any Underlying Funds are not included in each annualized expense ratio.
 
 
 
Distributions (Unaudited)
 
The dividend and capital gains distributions for the fund(s) are available on Fidelity.com or Institutional.Fidelity.com.
 
A total of 99.58% of the dividends distributed during the fiscal year was derived from interest on U.S. Government securities which is generally exempt from state income tax.
 
The fund designates $313,253,523 of distributions paid during the fiscal year ended 2024 as qualifying to be taxed as section 163(j) interest dividends.
 
The fund will notify shareholders in January 2025 of amounts for use in preparing 2024 income tax returns.
 
 
Board Approval of Investment Advisory Contracts
 
Board Approval of Investment Advisory Contracts and Management Fees
Fidelity SAI U.S. Treasury Bond Index Fund
Each year, the Board of Trustees, including the Independent Trustees (together, the Board), considers the renewal of the fund's management contract with Fidelity Management & Research Company LLC (FMR) and the sub-advisory agreements (together, the Advisory Contracts) for the fund. FMR and the sub-advisers are referred to herein as the Investment Advisers. The Board, assisted by the advice of fund counsel and Independent Trustees' counsel, requests and considers a broad range of information relevant to the renewal of the Advisory Contracts throughout the year.
The Board meets regularly and, at each of its meetings, covers an extensive agenda of topics and materials and considers factors that are relevant to its annual consideration of the renewal of the fund's Advisory Contracts, including the services and support provided to the fund and its shareholders. The Board's Operations Committee, of which all the Independent Trustees are members, meets regularly throughout the year and requests, receives and considers, among other matters, information related to the annual consideration of the renewal of the fund's Advisory Contracts before making its recommendation to the Board. The Board also meets as needed to review matters specifically related to the Board's annual consideration of the renewal of the Advisory Contracts. Members of the Board may also meet from time to time with trustees of other Fidelity funds through joint ad hoc committees to discuss certain matters relevant to all of the Fidelity funds.
At its September 2023 meeting, the Board unanimously determined to renew the fund's Advisory Contracts. In reaching its determination, the Board considered all factors it believed relevant, including (i) the nature, extent, and quality of the services provided to the fund and its shareholders (including the investment performance of the fund); (ii) the competitiveness relative to peer funds of the fund's management fee and total expense ratio; (iii) the total costs of the services provided by and the profits realized by FMR and its affiliates (Fidelity) from its relationships with the fund; and (iv) the extent to which, if any, economies of scale exist and are realized as the fund grows, and whether any economies of scale are appropriately shared with fund shareholders. The Board also considered the broad range of investment choices available to shareholders from FMR's competitors and that the fund's shareholders have chosen to invest in the fund, which is part of the Fidelity family of funds. The Board's decision to renew the Advisory Contracts was not based on any single factor.
The Board reached a determination, with the assistance of fund counsel and Independent Trustees' counsel and through the exercise of its business judgment, that the renewal of the Advisory Contracts was in the best interests of the fund and its shareholders and that the compensation payable under the Advisory Contracts was fair and reasonable in light of all of the surrounding circumstances.
Nature, Extent, and Quality of Services Provided. The Board considered Fidelity's staffing as it relates to the fund, including the backgrounds and experience of investment personnel, and also considered the Investment Advisers' implementation of the fund's investment program. The Independent Trustees also had discussions with senior management of Fidelity's investment operations and investment groups. The Board considered the structure of the investment personnel compensation program and whether this structure provides appropriate incentives to act in the best interests of the fund. Additionally, the Board considered the portfolio managers' investments, if any, in the funds that they manage.
Resources Dedicated to Investment Management and Support Services. The Board reviewed the general qualifications and capabilities of Fidelity's investment staff, including its size, education, experience, and resources, as well as Fidelity's approach to recruiting, training, managing, and compensating investment personnel. The Board noted the resources devoted to Fidelity's global investment organization, and that Fidelity's analysts have extensive resources, tools and capabilities that allow them to conduct quantitative and fundamental analysis, as well as credit analysis of issuers, counterparties and guarantors. Further, the Board considered that Fidelity's investment professionals have sufficient access to global information and data so as to provide competitive investment results over time, and that those professionals also have access to sophisticated tools that permit them to assess portfolio construction and risk and performance attribution characteristics continuously, as well as to transmit new information and research conclusions rapidly around the world. Additionally, in its deliberations, the Board considered Fidelity's trading, risk management, compliance, cybersecurity, and technology and operations capabilities and resources, which are integral parts of the investment management process.
Shareholder and Administrative Services. The Board considered (i) the nature, extent, quality, and cost of advisory, administrative, and shareholder services performed by the Investment Advisers and their affiliates under the Advisory Contracts and under separate agreements covering transfer agency, pricing and bookkeeping, and securities lending services for the fund; (ii) the nature and extent of Fidelity's supervision of third party service providers, principally custodians, subcustodians, and pricing vendors; and (iii) the resources devoted by Fidelity to, and the record of compliance with, the fund's compliance policies and procedures. The Board also considered the fund's securities lending activities and any payments made to Fidelity relating to securities lending.
The Board noted that the growth of fund assets over time across the complex allows Fidelity to reinvest in the development of services designed to enhance the value and convenience of the Fidelity funds as investment vehicles. These services include 24-hour access to account information and market information over the Internet and through telephone representatives, investor education materials and asset allocation tools. The Board also considered that it reviews customer service metrics such as telephone response times, continuity of services on the website and metrics addressing services at Fidelity Investor Centers.
Investment in a Large Fund Family. The Board considered the benefits to shareholders of investing in a fund that is part of a large family of funds offering a variety of investment disciplines and providing a large variety of fund investor services. The Board noted that Fidelity had taken, or had made recommendations to the Board that resulted in the Fidelity funds taking, a number of actions over the previous year that benefited particular funds and/or the Fidelity funds in general.
Investment Performance. The Board took into account discussions that occur with representatives of the Investment Advisers, and reports that it receives, at Board meetings throughout the year relating to fund investment performance. In this regard the Board noted that as part of regularly scheduled fund reviews and other reports to the Board on fund performance, the Board considered annualized return information for the fund for different time periods, measured against the securities market index the fund seeks to track (benchmark index) and an appropriate peer group of funds with similar objectives (peer group). The Board also periodically considers the fund's tracking error versus its benchmark index. In its evaluation of fund investment performance at meetings throughout the year, the Board gave particular attention to information indicating underperformance of certain Fidelity funds over different time periods and discussed with the Investment Advisers the reasons for such underperformance.
In addition to reviewing absolute and relative fund performance, the Independent Trustees periodically consider the appropriateness of fund performance metrics in evaluating the results achieved. In general, the Independent Trustees believe that an index fund's performance should be evaluated based on gross performance (before fees and expenses but after transaction costs) of the fund compared to the fund's benchmark index, over appropriate time periods taking into account relevant factors including the following: general market conditions; the characteristics of the fund's benchmark index; the extent to which statistical sampling is employed; any securities lending revenues; and fund cash flows and other factors.
Based on its review, the Board concluded that the nature, extent, and quality of services provided to the fund under the Advisory Contracts should continue to benefit the shareholders of the fund.
Competitiveness of Management Fee and Total Expense Ratio. The Board was provided with information regarding industry trends in management fees and expenses. In its review of the fund's management fee and total expense ratio, the Board considered the fund's management fee rate as well as other fund or class expenses, as applicable, such as transfer agent fees, pricing and bookkeeping fees, and custodial, legal, and audit fees. The Board noted that Fidelity may agree to waive fees or reimburse expenses from time to time, and the extent to which, if any, it has done so for the fund.
Comparisons of Management Fees and Total Expense Ratios. Among other things, the Board reviewed data for selected groups of competitive funds and classes (referred to as "mapped groups") that were compiled by Fidelity based on combining similar investment objective categories (as classified by Lipper) that have comparable investment mandates. The data reviewed by the Board included (i) gross management fee comparisons (before taking into account expense reimbursements or caps) relative to the total universe of funds within the mapped group; (ii) gross management fee comparisons relative to a subset of non-Fidelity funds in the mapped group that are similar in size and management fee structure to the fund (referred to as the "asset size peer group"); (iii) total expense comparisons of the fund relative to funds and classes in the mapped group that have a similar sales load structure to the fund (referred to as the "similar sales load structure group"); and (iv) total expense comparisons of the fund relative to funds and classes in the similar sales load structure group that are similar in size and management fee structure to the fund (referred to as the "total expense asset size peer group"). The total expense asset size peer group comparison excludes performance adjustments and fund-paid 12b-1 fees to eliminate variability in fee structures.
The information provided to the Board indicated that the fund's management fee rate ranked below the competitive median of the mapped group for 2022 and below the competitive median of the asset size peer group for 2022. Further, the information provided to the Board indicated that the total expense ratio of the fund ranked below the competitive median of the similar sales load structure group for 2022 and below the competitive median of the total expense asset size peer group for 2022.
Other Contractual Arrangements. The Board further considered that FMR has contractually agreed to reimburse the fund to the extent that total operating expenses, with certain exceptions, as a percentage of its average net assets, exceed 0.03% through June 30, 2024.
Fees Charged to Other Fidelity Clients. The Board also considered Fidelity fee structures and other information with respect to clients of Fidelity, such as other funds advised or subadvised by Fidelity, pension plan clients, and other institutional clients with similar mandates. The Board noted that a joint ad hoc committee created by it and the boards of other Fidelity funds periodically reviews and compares Fidelity's institutional investment advisory business with its business of providing services to the Fidelity funds and also noted the most recent findings of the committee. The Board noted that the committee's review included a consideration of the differences in services provided, fees charged, and costs incurred, as well as competition in the markets serving the different categories of clients.
Based on its review, the Board concluded that the fund's management fee is fair and reasonable in light of the services that the fund receives and the other factors considered. Further, based on its review of total expense ratios and fees charged to other Fidelity clients, the Board concluded that the fund's total expense ratio was reasonable in light of the services that the fund and its shareholders receive and the other factors considered.
Costs of the Services and Profitability. The Board considered the revenues earned and the expenses incurred by Fidelity in conducting the business of developing, marketing, distributing, managing, administering and servicing the fund and servicing the fund's shareholders. The Board also considered the level of Fidelity's profits in respect of all the Fidelity funds.
On an annual basis, Fidelity presents to the Board information about the profitability of its relationships with the fund. Fidelity calculates profitability information for each fund, as well as aggregate profitability information for groups of Fidelity funds and all Fidelity funds, using a series of detailed revenue and cost allocation methodologies which originate with the books and records of Fidelity on which Fidelity's audited financial statements are based. The Audit Committee of the Board reviews any significant changes from the prior year's methodologies and the full Board approves such changes.
A public accounting firm has been engaged annually by the Board as part of the Board's assessment of Fidelity's profitability analysis. The engagement includes the review and assessment of the methodologies used by Fidelity in determining the revenues and expenses attributable to Fidelity's fund business, and completion of agreed-upon procedures in respect of the mathematical accuracy of certain fund profitability information and its conformity to established allocation methodologies. After considering the reports issued under the engagement and information provided by Fidelity, the Board concluded that while other allocation methods may also be reasonable, Fidelity's profitability methodologies are reasonable in all material respects.
The Board also reviewed Fidelity's non-fund businesses and potential indirect benefits such businesses may have received as a result of their association with Fidelity's fund business (i.e., fall-out benefits) as well as cases where Fidelity's affiliates may benefit from the funds' business. The Board considered areas where potential indirect benefits to the Fidelity funds from their relationships with Fidelity may exist. The Board's consideration of these matters was informed by the findings of a joint ad hoc committee created by it and the boards of other Fidelity funds to evaluate potential fall-out benefits.
The Board considered the costs of the services provided by and the profits realized by Fidelity in connection with the operation of the fund and was satisfied that the profitability was not excessive.
Economies of Scale. The Board considered whether there have been economies of scale in respect of the management of the Fidelity funds, whether the Fidelity funds (including the fund) have appropriately benefited from any such economies of scale, and whether there is potential for realization of any further economies of scale. The Board considered the extent to which the fund will benefit from economies of scale as assets grow through increased services to the fund, through waivers or reimbursements, or through fee or expense ratio reductions. The Board also noted that a committee created by it and the boards of other Fidelity funds periodically analyzes whether Fidelity attains economies of scale in respect of the management and servicing of the Fidelity funds, whether the Fidelity funds have appropriately benefited from such economies of scale, and whether there is potential for realization of any further economies of scale.
The Board concluded, taking into account the analysis of the committee, that economies of scale, if any, are being appropriately shared between fund shareholders and Fidelity.
Additional Information Requested by the Board. In order to develop fully the factual basis for consideration of the Fidelity funds' advisory contracts, the Board requested and received additional information on certain topics, including: (i) Fidelity's fund profitability methodology, profitability trends for certain funds, the allocation of various costs to different funds, and the impact of certain factors on fund profitability results; (ii) portfolio manager changes that have occurred during the past year and Fidelity's views regarding portfolio manager investment in the Fidelity funds that they manage; (iii) hiring, training, and retaining personnel; (iv) the arrangements with and compensation paid to certain fund sub-advisers and the treatment of such compensation within Fidelity's fund profitability methodology; (v) the terms of the funds' various management fee structures, including the basic group fee and the terms of Fidelity's voluntary expense limitation arrangements; (vi) Fidelity's transfer agent, pricing and bookkeeping fees, expense and service structures for different funds and classes relative to competitive trends and market conditions; (vii) the impact on fund profitability of recent industry trends, such as the growth in passively managed funds and the changes in flows for different types of funds; (viii) the types of management fee and total expense comparisons provided, and the challenges and limitations associated with such information; (ix) explanations regarding the relative total expense ratios and management fees of certain funds and classes, total expense and management fee competitive trends, and methodologies for total expense and management fee competitive comparisons; (x) information concerning expense limitations applicable to certain funds; and (xi) matters related to money market funds, exchange-traded funds, and target date funds.
Conclusion. Based on its evaluation of all of the conclusions noted above, and after considering all factors it believed relevant, the Board, including the Independent Trustees, concluded that the advisory and sub-advisory fee arrangements are fair and reasonable in light of all of the surrounding circumstances and that the fund's Advisory Contracts should be renewed through September 30, 2024.
Board Approval of Investment Advisory Contracts
Fidelity SAI U.S. Treasury Bond Index Fund
At its January 2024 meeting, the Board of Trustees, including the Independent Trustees (together, the Board), approved amended and restated sub-advisory agreements (the Sub-Advisory Contracts) for the fund, including the fund's sub-advisory agreements with FMR Investment Management (UK) Limited (FMR UK), Fidelity Management & Research (Hong Kong) Limited (FMR H.K.), and Fidelity Management & Research (Japan) Limited (FMR Japan). The Sub-Advisory Contracts will be effective March 1, 2024. The Board will consider the annual renewal of the fund's Sub-Advisory Contracts in September 2024, following its review of additional materials provided by FMR.
The Board considered the Sub-Advisory Contracts, which changed the arrangements for fees paid by FMR to the sub-advisers under the agreements. The Board noted that the agreements with FMR UK, FMR H.K., and FMR Japan were amended to provide that FMR will compensate each sub-adviser at a fee equal to 110% of the sub-adviser's costs incurred in providing services under the agreement. The Board considered that, under the Sub-Advisory Contracts, FMR, and not the fund, will continue to pay the sub-advisory fees to each applicable sub-adviser, and that the management fee paid by the fund under the management contract with FMR will remain unchanged.
The Board considered that the approval of the fund's Sub-Advisory Contracts will not result in any changes in the investment process or strategies employed in the management of the fund's assets or the day-to-day management of the fund or the persons primarily responsible for such management. Further, the Board considered that the Sub-Advisory Contracts would not change the obligations and services of FMR and its affiliates on behalf of the fund, and, in particular, there would be no change in the nature and level of services provided to the fund by FMR and its affiliates.
In connection with its consideration of future renewals of the fund's advisory contracts, the Board will consider: (i) the nature, extent and quality of services provided to the funds, including shareholder and administrative services and investment performance; (ii) the competitiveness of the management fee and total expenses for the fund; (iii) the costs of the services and profitability, including the revenues earned and the expenses incurred in conducting the business of developing, marketing, distributing, managing, administering, and servicing the fund and its shareholders, to the extent applicable; and (iv) whether there have been economies of scale in respect of the Fidelity funds, whether the Fidelity funds (including the fund) have appropriately benefited from any such economies of scale, and whether there is the potential for realization of any further economies.
Based on its evaluation of all of the conclusions noted above, and after considering all factors it believed relevant, the Board concluded that the fund's management fee structure is fair and reasonable, and that the fund's Sub-Advisory Contracts should be approved.
 
Liquidity Risk Management Program
The Securities and Exchange Commission adopted Rule 22e-4 under the Investment Company Act of 1940 (the Liquidity Rule) to promote effective liquidity risk management throughout the open-end investment company industry, thereby reducing the risk that funds will be unable to meet their redemption obligations and mitigating dilution of the interests of fund shareholders.
The Fund has adopted and implemented a liquidity risk management program (the Program) reasonably designed to assess and manage the Fund's liquidity risk and to comply with the requirements of the Liquidity Rule. The Fund's Board of Trustees (the Board) has designated the Fund's investment adviser as administrator of the Program. The Fidelity advisers have established a Liquidity Risk Management Committee (the LRM Committee) to manage the Program for each of the Fidelity Funds. The LRM Committee monitors the adequacy and effectiveness of implementation of the Program and on a periodic basis assesses each Fund's liquidity risk based on a variety of factors including (1) the Fund's investment strategy, (2) portfolio liquidity and cash flow projections during normal and reasonably foreseeable stressed conditions, (3) shareholder redemptions, (4) borrowings and other funding sources and (5) certain factors specific to ETFs including the effect of the Fund's prices and spreads, market participants, and basket compositions on the overall liquidity of the Fund's portfolio, as applicable.
In accordance with the Program, each of the Fund's portfolio investments is classified into one of four defined liquidity categories based on a determination of a reasonable expectation for how long it would take to convert the investment to cash (or sell or dispose of the investment) without significantly changing its market value.
Liquidity classification determinations take into account a variety of factors including various market, trading and investment-specific considerations, as well as market depth, and generally utilize analysis from a third-party liquidity metrics service.
The Liquidity Rule places a 15% limit on a fund's illiquid investments and requires funds that do not primarily hold assets that are highly liquid investments to determine and maintain a minimum percentage of the fund's net assets to be invested in highly liquid investments (highly liquid investment minimum or HLIM).  The Program includes provisions reasonably designed to comply with the 15% limit on illiquid investments and for determining, periodically reviewing and complying with the HLIM requirement as applicable.
At a recent meeting of the Fund's Board of Trustees, the LRM Committee provided a written report to the Board pertaining to the operation, adequacy, and effectiveness of the Program for the period December 1, 2022 through November 30, 2023.  The report concluded that the Program is operating effectively and is reasonably designed to assess and manage the Fund's liquidity risk.  
Proxy Voting Results
A special meeting of shareholders was held on October 18, 2023. The results of votes taken among shareholders on the proposal before them are reported below. Each vote reported represents one dollar of net asset value held on the record date for the meeting.
Proposal 1
To elect a Board of Trustees.
 
# of
Votes
% of
Votes
Abigail P. Johnson
Affirmative
378,729,502,260.01
97.58
Withheld
9,407,876,478.96
2.42
TOTAL
388,137,378,738.97
100.00
Jennifer Toolin McAuliffe
Affirmative
378,454,868,010.95
97.51
Withheld
9,682,510,728.02
2.49
TOTAL
388,137,378,738.97
100.00
Christine J. Thompson
Affirmative
378,837,121,274.52
97.60
Withheld
9,300,257,464.45
2.40
TOTAL
388,137,378,738.97
100.00
Elizabeth S. Acton
Affirmative
378,262,110,794.85
97.46
Withheld
9,875,267,944.12
2.54
TOTAL
388,137,378,738.97
100.00
Laura M. Bishop
Affirmative
380,482,113,171.06
98.03
Withheld
7,655,265,567.91
1.97
TOTAL
388,137,378,738.97
100.00
Ann E. Dunwoody
Affirmative
380,016,034,008.12
97.91
Withheld
8,121,344,730.85
2.09
TOTAL
388,137,378,738.97
100.00
John Engler
Affirmative
379,432,488,394.20
97.76
Withheld
8,704,890,344.77
2.24
TOTAL
388,137,378,738.97
100.00
Robert F. Gartland
Affirmative
378,741,819,600.60
97.58
Withheld
9,395,559,138.37
2.42
TOTAL
388,137,378,738.97
100.00
Robert W. Helm
Affirmative
380,389,324,755.07
98.00
Withheld
7,748,053,983.90
2.00
TOTAL
388,137,378,738.97
100.00
Arthur E. Johnson
Affirmative
378,427,694,151.67
97.50
Withheld
9,709,684,587.30
2.50
TOTAL
388,137,378,738.97
100.00
Michael E. Kenneally
Affirmative
377,842,228,145.18
97.35
Withheld
10,295,150,593.79
2.65
TOTAL
388,137,378,738.97
100.00
Mark A. Murray
Affirmative
380,158,432,703.37
97.94
Withheld
7,978,946,035.60
2.06
TOTAL
388,137,378,738.97
100.00
Carol J. Zierhoffer
Affirmative
380,522,113,360.24
98.04
Withheld
7,615,265,378.73
1.96
TOTAL
388,137,378,738.97
100.00
 
 
 
Proposal 1 reflects trust wide proposal and voting results.
 
 
 
1.9872606.107
UYB-ANN-0424
Fidelity® SAI Long-Term Treasury Bond Index Fund
 
 
Annual Report
February 29, 2024
 
Offered exclusively to certain clients of the Adviser, or its affiliates, including Strategic Advisers LLC (Strategic Advisers) - not available for sale to the general public. Fidelity® SAI is a product name of Fidelity® funds dedicated to certain programs affiliated with Strategic Advisers.

Contents

Performance

Management's Discussion of Fund Performance

Investment Summary

Schedule of Investments

Financial Statements

Notes to Financial Statements

Report of Independent Registered Public Accounting Firm

Trustees and Officers

Shareholder Expense Example

Distributions

Board Approval of Investment Advisory Contracts

Liquidity Risk Management Program

Proxy Voting Results

To view a fund's proxy voting guidelines and proxy voting record for the 12-month period ended June 30, visit http://www.fidelity.com/proxyvotingresults or visit the Securities and Exchange Commission's (SEC) web site at http://www.sec.gov.
 
 
You may also call 1-800-544-3455 to request a free copy of the proxy voting guidelines.
BLOOMBERG ® is a trademark and service mark of Bloomberg Finance L.P. and its affiliates (collectively "Bloomberg"). Bloomberg or Bloomberg's licensors own all proprietary rights in the Bloomberg Indices. Neither Bloomberg nor Bloomberg's licensors approves or endorses this material, or guarantees the accuracy or completeness of any information herein, or makes any warranty, express or implied, as to the results to be obtained therefrom and, to the maximum extent allowed by law, neither shall have any liability or responsibility for injury or damages arising in connection therewith.
Standard & Poor's, S&P and S&P 500 are registered service marks of The McGraw-Hill Companies, Inc. and have been licensed for use by Fidelity Distributors Corporation.
Other third-party marks appearing herein are the property of their respective owners.
All other marks appearing herein are registered or unregistered trademarks or service marks of FMR LLC or an affiliated company. © 2024 FMR LLC. All rights reserved.
 
This report and the financial statements contained herein are submitted for the general information of the shareholders of the Fund. This report is not authorized for distribution to prospective investors in the Fund unless preceded or accompanied by an effective prospectus.
A fund files its complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. Forms N-PORT are available on the SEC's web site at http://www.sec.gov. A fund's Forms N-PORT may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information regarding the operation of the SEC's Public Reference Room may be obtained by calling 1-800-SEC-0330.
For a complete list of a fund's portfolio holdings, view the most recent holdings listing, semiannual report, or annual report on Fidelity's web site at http://www.fidelity.com, http://www.institutional.fidelity.com, or http://www.401k.com, as applicable.
NOT FDIC INSURED •MAY LOSE VALUE •NO BANK GUARANTEE
Neither the Fund nor Fidelity Distributors Corporation is a bank.
 
Performance: The Bottom Line
Average annual total return reflects the change in the value of an investment, assuming reinvestment of distributions from dividend income and capital gains (the profits earned upon the sale of securities that have grown in value, if any) and assuming a constant rate of performance each year. The hypothetical investment and the average annual total returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. During periods of reimbursement by Fidelity, a fund's total return will be greater than it would be had the reimbursement not occurred. How a fund did yesterday is no guarantee of how it will do tomorrow.
Average Annual Total Returns
 
 
 
 
Periods ended February 29, 2024
 
Past 1
year
Past 5
years
Life of
Fund A
Fidelity® SAI Long-Term Treasury Bond Index Fund
-3.91%
-2.58%
-0.71%
 
A   From October 8, 2015
 $10,000 Over Life of Fund
 
Let's say hypothetically that $10,000 was invested in Fidelity® SAI Long-Term Treasury Bond Index Fund, on October 8, 2015, when the fund started.
 
The chart shows how the value of your investment would have changed, and also shows how the Bloomberg U.S. 20+ Year Treasury Bond Index performed over the same period.
 
Management's Discussion of Fund Performance
Market Recap:
U.S. taxable investment-grade bonds gained 3.33% for the 12 months ending February 29, 2024, as measured by the Bloomberg U.S. Aggregate Bond Index. The advance was driven by a powerful rally in the final two months of 2023, but the 12-month period was marked by high levels of volatility. The early months saw the bond market start to rebound from the historic downturn that began in early 2022, when the U.S. Federal Reserve began an aggressive series of interest rate hikes to combat persistent inflation. The index advanced in March and April of 2023 on optimism the central bank would soon be done with its hiking cycle, only to fall back in each of the next six months, as cooling but still-high inflation and a strong labor market suggested it may need to keep raising rates. Bonds saw particularly sharp sell-offs in September (-2.54%) and October (-1.58%). At its committee meeting in November, though, the Fed struck a new, more optimistic tone, and then in December signaled to the market that, if disinflation trends hold, it expected to begin cutting interest rates in 2024. The index gained 4.53% in November, its best month since the 1980s, and a further 3.83% in December but fell in January (-0.27%) and February (-1.41%) as disinflation stalled. For the full 12 months, short-term bonds outperformed long-term issues, while lower-quality bonds bettered higher-quality debt, and risk assets, including corporate bonds and asset-backed securities, notably outpaced U.S. Treasurys.
Comments from Co-Portfolio Managers Brandon Bettencourt and Richard Munclinger:
For the fiscal year, the fund returned -3.91% versus the -3.97% result of the benchmark, the Bloomberg US 20+ Year Treasury Bond Index. These results met our goal of producing monthly returns, before expenses, that closely match the benchmark return. We construct the portfolio using optimization. This approach minimizes the differences between risk exposures of the fund relative to the index. Exposures include duration, key rate durations, and other factors. Treasurys were under pressure throughout much of the past 12 months, particularly summer and early fall 2023, as well as early 2024, amid heightened concern the Fed would hold rates higher and for significantly longer than expected. For the 12 months overall, Treasurys with short durations (less interest rate sensitivity) posted the biggest gains this period, while long-duration Treasurys declined.
 
 
 
The views expressed above reflect those of the portfolio manager(s) only through the end of the period as stated on the cover of this report and do not necessarily represent the views of Fidelity or any other person in the Fidelity organization. Any such views are subject to change at any time based upon market or other conditions and Fidelity disclaims any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Fidelity fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any Fidelity fund.
 
Investment Summary February 29, 2024 (Unaudited)
Coupon Distribution (% of Fund's Investments)
 
1 - 1.99%
11.1
 
2 - 2.99%
45.3
 
3 - 3.99%
31.3
 
4 - 4.99%
11.3
 
 
Coupon distribution shows the range of stated interest rates on the fund's investments, excluding short-term investments.
 
 
Asset Allocation (% of Fund's net assets)
 
Schedule of Investments February 29, 2024
Showing Percentage of Net Assets  
U.S. Government and Government Agency Obligations - 99.3%
 
 
Principal
Amount (a)
 
Value ($)
 
U.S. Treasury Obligations - 99.3%
 
 
 
U.S. Treasury Bonds:
 
 
 
 1.25% 5/15/50
 
253,000
128,496
 1.625% 11/15/50
 
148,642,000
83,477,579
 1.875% 2/15/51
 
254,713,000
152,479,559
 1.875% 11/15/51
 
229,500,000
136,731,797
 2% 2/15/50
 
165,843,800
103,257,201
 2% 8/15/51
 
224,588,000
138,305,852
 2.25% 8/15/46
 
109,454,000
74,343,209
 2.25% 2/15/52
 
91,300,000
59,723,039
 2.375% 11/15/49
 
103,225,000
70,253,484
 2.375% 5/15/51
 
474,770,000
320,377,017
 2.5% 2/15/45
 
91,179,700
66,091,036
 2.5% 2/15/46
 
107,485,000
77,145,680
 2.5% 5/15/46
 
59,700,000
42,729,809
 2.75% 8/15/42
 
3,500
2,723
 2.75% 8/15/47
 
232,357,000
172,697,526
 2.75% 11/15/47
 
70,354,000
52,202,119
 2.875% 5/15/43
 
20,200
15,899
 2.875% 8/15/45
 
43,359,100
33,483,049
 2.875% 11/15/46
 
40,096,000
30,676,572
 2.875% 5/15/49
 
154,018,000
116,458,063
 2.875% 5/15/52
 
210,200,000
158,274,031
 3% 11/15/44
 
800
635
 3% 5/15/45
 
36,846,800
29,134,880
 3% 11/15/45
 
135,806,000
107,016,189
 3% 2/15/47
 
59,046,000
46,127,381
 3% 5/15/47
 
50,348,000
39,293,074
 3% 2/15/48
 
128,187,000
99,610,312
 3% 8/15/48
 
122,455,000
95,022,210
 3% 2/15/49
 
51,759,000
40,105,138
 3% 8/15/52
 
278,900,000
215,613,669
 3.125% 2/15/42
 
68,100
56,480
 3.125% 8/15/44
 
15,364,300
12,464,889
 3.125% 5/15/48
 
154,814,000
123,010,608
 3.375% 5/15/44
 
17,923,800
15,153,313
 3.625% 2/15/53
 
215,300,000
188,236,118
 3.625% 5/15/53
 
41,700,000
36,484,242
 4% 11/15/52
 
170,300,000
159,456,679
 4.125% 8/15/53
 
226,600,000
216,934,094
 4.75% 11/15/53
 
600,000
638,344
 
TOTAL U.S. GOVERNMENT AND GOVERNMENT AGENCY OBLIGATIONS
 (Cost $3,836,027,283)
 
 
 
3,313,211,995
 
 
 
 
Money Market Funds - 1.0%
 
 
Shares
Value ($)
 
Fidelity Cash Central Fund 5.39% (b)
 
 (Cost $33,489,230)
 
 
33,482,533
33,489,230
 
 
 
 
 
TOTAL INVESTMENT IN SECURITIES - 100.3%
 (Cost $3,869,516,513)
 
 
 
3,346,701,225
NET OTHER ASSETS (LIABILITIES) - (0.3)%  
(8,594,267)
NET ASSETS - 100.0%
3,338,106,958
 
 
 
Legend
 
(a)
Amount is stated in United States dollars unless otherwise noted.
 
(b)
Affiliated fund that is generally available only to investment companies and other accounts managed by Fidelity Investments. The rate quoted is the annualized seven-day yield of the fund at period end. A complete unaudited listing of the fund's holdings as of its most recent quarter end is available upon request. In addition, each Fidelity Central Fund's financial statements, which are not covered by the Fund's Report of Independent Registered Public Accounting Firm, are available on the SEC's website or upon request.
 
 
 
Affiliated Central Funds
 
Fiscal year to date information regarding the Fund's investments in Fidelity Central Funds, including the ownership percentage, is presented below.
 
 
Affiliate
Value,
beginning
of period ($)
Purchases ($)
Sales
Proceeds ($)
Dividend
Income ($)
Realized
Gain (loss) ($)
Change in
Unrealized
appreciation
(depreciation) ($)
Value,
end
of period ($)
% ownership,
end
of period
Fidelity Cash Central Fund 5.39%
36,864,367
232,527,559
235,902,696
649,466
-
-
33,489,230
0.1%
Fidelity Securities Lending Cash Central Fund 5.39%
-
78,756,729
78,756,729
2,805
-
-
-
0.0%
Total
36,864,367
311,284,288
314,659,425
652,271
-
-
33,489,230
 
 
 
 
 
 
 
 
 
 
Amounts in the dividend income column in the above table include any capital gain distributions from underlying funds, which are presented in the corresponding line item in the Statement of Operations, if applicable.
 
Amounts in the dividend income column for Fidelity Securities Lending Cash Central Fund represents the income earned on investing cash collateral, less rebates paid to borrowers and any lending agent fees associated with the loan, plus any premium payments received for lending certain types of securities.
 
Amounts included in the purchases and sales proceeds columns may include in-kind transactions, if applicable.
 
Investment Valuation
 
The following is a summary of the inputs used, as of February 29, 2024, involving the Fund's assets and liabilities carried at fair value. The inputs or methodology used for valuing securities may not be an indication of the risk associated with investing in those securities. For more information on valuation inputs, and their aggregation into the levels used below, please refer to the Investment Valuation section in the accompanying Notes to Financial Statements.
 
Valuation Inputs at Reporting Date:
Description
Total ($)
Level 1 ($)
Level 2 ($)
Level 3 ($)
 Investments in Securities:
 
 
 
 
 U.S. Government and Government Agency Obligations
3,313,211,995
-
3,313,211,995
-
  Money Market Funds
33,489,230
33,489,230
-
-
 Total Investments in Securities:
3,346,701,225
33,489,230
3,313,211,995
-
Financial Statements
Statement of Assets and Liabilities
 
 
 
 
 
 
 
 
Assets
 
 
 
 
Investment in securities, at value  - See accompanying schedule:
 
 
 
 
Unaffiliated issuers (cost $3,836,027,283)
$
3,313,211,995
 
 
Fidelity Central Funds (cost $33,489,230)
33,489,230
 
 
 
 
 
 
 
 
 
 
 
 
Total Investment in Securities (cost $3,869,516,513)
 
 
$
3,346,701,225
Receivable for investments sold
 
 
54,459,714
Receivable for fund shares sold
 
 
79,043
Interest receivable
 
 
19,146,801
Distributions receivable from Fidelity Central Funds
 
 
93,390
Prepaid expenses
 
 
2,112
Receivable from investment adviser for expense reductions
 
 
37,801
  Total assets
 
 
3,420,520,086
Liabilities
 
 
 
 
Payable for investments purchased
$
78,913,703
 
 
Payable for fund shares redeemed
3,259,565
 
 
Distributions payable
79,622
 
 
Accrued management fee
112,048
 
 
Other payables and accrued expenses
48,190
 
 
  Total Liabilities
 
 
 
82,413,128
Net Assets  
 
 
$
3,338,106,958
Net Assets consist of:
 
 
 
 
Paid in capital
 
 
$
6,155,115,649
Total accumulated earnings (loss)
 
 
 
(2,817,008,691)
Net Assets
 
 
$
3,338,106,958
Net Asset Value, offering price and redemption price per share ($3,338,106,958 ÷ 465,213,598 shares)
 
 
$
7.18
Statement of Operations
 
 
 
Year ended
Investment Income
 
 
 
 
Interest  
 
 
$
142,714,116
Income from Fidelity Central Funds (including $2,805 from security lending)
 
 
652,271
 Total Income
 
 
 
143,366,387
Expenses
 
 
 
 
Management fee
$
1,475,889
 
 
Custodian fees and expenses
4,323
 
 
Independent trustees' fees and expenses
11,793
 
 
Registration fees
60,696
 
 
Audit
60,271
 
 
Legal
2,097
 
 
Miscellaneous
22,900
 
 
 Total expenses before reductions
 
1,637,969
 
 
 Expense reductions
 
(511,822)
 
 
 Total expenses after reductions
 
 
 
1,126,147
Net Investment income (loss)
 
 
 
142,240,240
Realized and Unrealized Gain (Loss)
 
 
 
 
Net realized gain (loss) on:
 
 
 
 
 Investment Securities:
 
 
 
 
   Unaffiliated issuers  
 
(285,914,913)
 
 
Total net realized gain (loss)
 
 
 
(285,914,913)
Change in net unrealized appreciation (depreciation) on investment securities
 
 
 
88,170,554
Net gain (loss)
 
 
 
(197,744,359)
Net increase (decrease) in net assets resulting from operations
 
 
$
(55,504,119)
Statement of Changes in Net Assets
 
 
Year ended
 
Year ended
Increase (Decrease) in Net Assets
 
 
 
 
Operations
 
 
 
Net investment income (loss)
$
142,240,240
$
141,418,609
Net realized gain (loss)
 
(285,914,913)
 
 
(1,997,160,741)
 
Change in net unrealized appreciation (depreciation)
 
88,170,554
 
(377,370,992)
 
Net increase (decrease) in net assets resulting from operations
 
(55,504,119)
 
 
(2,233,113,124)
 
Distributions to shareholders
 
(126,136,529)
 
 
(133,766,281)
 
 
 
 
 
 
Share transactions
 
 
 
 
Proceeds from sales of shares
 
1,571,655,121
 
4,729,413,945
  Reinvestment of distributions
 
124,963,502
 
 
133,514,177
 
Cost of shares redeemed
 
(1,415,721,451)
 
(6,343,836,524)
 
 
 
 
 
  Net increase (decrease) in net assets resulting from share transactions
 
280,897,172
 
 
(1,480,908,402)
 
Total increase (decrease) in net assets
 
99,256,524
 
 
(3,847,787,807)
 
 
 
 
 
 
Net Assets
 
 
 
 
Beginning of period
 
3,238,850,434
 
7,086,638,241
 
End of period
$
3,338,106,958
$
3,238,850,434
 
 
 
 
 
Other Information
 
 
 
 
Shares
 
 
 
 
Sold
 
226,044,229
 
534,586,650
  Issued in reinvestment of distributions
 
17,057,001
 
 
16,005,056
 
Redeemed
 
(196,792,164)
 
(793,669,358)
Net increase (decrease)
 
46,309,066
 
(243,077,652)
 
 
 
 
 
 
Financial Highlights
Fidelity® SAI Long-Term Treasury Bond Index Fund
 
Years ended February 28,
 
2024 A 
 
2023 
 
2022  
 
2021 
 
2020 A
  Selected Per-Share Data 
 
 
 
 
 
 
 
 
 
 
  Net asset value, beginning of period
$
7.73
$
10.71
$
11.04
$
12.59
$
9.72
  Income from Investment Operations
 
 
 
 
 
 
 
 
 
 
     Net investment income (loss) B,C
 
.283
 
.243
 
.219
 
.227
 
.251
     Net realized and unrealized gain (loss)
 
(.582)
 
(2.991)
 
(.309)
 
(.965)
 
2.876
  Total from investment operations
 
(.299)  
 
(2.748)  
 
(.090)  
 
(.738)  
 
3.127
  Distributions from net investment income
 
(.251)
 
(.232)
 
(.213)
 
(.226)
 
(.257)
  Distributions from net realized gain
 
-
 
-
 
(.027)
 
(.586)
 
-
     Total distributions
 
(.251)
 
(.232)
 
(.240)
 
(.812)
 
(.257)
  Net asset value, end of period
$
7.18
$
7.73
$
10.71
$
11.04
$
12.59
 Total Return D
 
(3.91)%
 
(25.78)%
 
(.85)%
 
(6.39)%
 
32.55%
 Ratios to Average Net Assets B,E,F
 
 
 
 
 
 
 
 
 
 
    Expenses before reductions
 
.04%
 
.04%
 
.08%
 
.05%
 
.08%
    Expenses net of fee waivers, if any
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Expenses net of all reductions
 
.03%
 
.03%
 
.03%
 
.03%
 
.03%
    Net investment income (loss)
 
3.85%
 
2.85%
 
1.97%
 
1.77%
 
2.21%
 Supplemental Data
 
 
 
 
 
 
 
 
 
 
    Net assets, end of period (000 omitted)
$
3,338,107
$
3,238,850
$
7,086,638
$
1,174,635
$
1,055,440
    Portfolio turnover rate G
 
51%
 
107%
 
62%
 
47%
 
18%
 
AFor the year ended February 29.
 
BNet investment income (loss) is affected by the timing of the declaration of dividends by any underlying mutual funds or exchange-traded funds (ETFs). Net investment income (loss) of any mutual funds or ETFs is not included in the Fund's net investment income (loss) ratio.
 
CCalculated based on average shares outstanding during the period.
 
DTotal returns would have been lower if certain expenses had not been reduced during the applicable periods shown.
 
EFees and expenses of any underlying mutual funds or exchange-traded funds (ETFs) are not included in the Fund's expense ratio. The Fund indirectly bears its proportionate share of these expenses. For additional expense information related to investments in Fidelity Central Funds, please refer to the "Investments in Fidelity Central Funds" note found in the Notes to Financial Statements section of the most recent Annual or Semi-Annual report.
 
FExpense ratios reflect operating expenses of the class. Expenses before reductions do not reflect amounts reimbursed, waived, or reduced through arrangements with the investment adviser, brokerage services, or other offset arrangements, if applicable, and do not represent the amount paid by the class during periods when reimbursements, waivers or reductions occur.
 
GAmount does not include the portfolio activity of any underlying mutual funds or exchange-traded funds (ETFs).
 
Notes to Financial Statements
For the period ended February 29, 2024
 
1. Organization.
Fidelity SAI Long-Term Treasury Bond Index Fund (the Fund) is a fund of Fidelity Salem Street Trust (the Trust) and is authorized to issue an unlimited number of shares. Shares are offered exclusively to certain clients of Fidelity Management & Research Company LLC (FMR) or its affiliates. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Massachusetts business trust.
2. Investments in Fidelity Central Funds.
Funds may invest in Fidelity Central Funds, which are open-end investment companies generally available only to other investment companies and accounts managed by the investment adviser and its affiliates. The Schedule of Investments lists any Fidelity Central Funds held as an investment as of period end, but does not include the underlying holdings of each Fidelity Central Fund. An investing fund indirectly bears its proportionate share of the expenses of the underlying Fidelity Central Funds.
 
Based on its investment objective, each Fidelity Central Fund may invest or participate in various investment vehicles or strategies that are similar to those of the investing fund. These strategies are consistent with the investment objectives of the investing fund and may involve certain economic risks which may cause a decline in value of each of the Fidelity Central Funds and thus a decline in the value of the investing fund.
 
Fidelity Central Fund
Investment Manager
Investment Objective
Investment Practices
Expense RatioA
Fidelity Money Market Central Funds
Fidelity Management & Research Company LLC (FMR)
Each fund seeks to obtain a high level of current income consistent with the preservation of capital and liquidity.
Short-term Investments
Less than .005%
 
A Expenses expressed as a percentage of average net assets and are as of each underlying Central Fund's most recent annual or semi-annual shareholder report.
 
A complete unaudited list of holdings for each Fidelity Central Fund is available upon request or at the Securities and Exchange Commission website at www.sec.gov. In addition, the financial statements of the Fidelity Central Funds which contain the significant accounting policies (including investment valuation policies) of those funds, and are not covered by the Report of Independent Registered Public Accounting Firm, are available on the Securities and Exchange Commission website or upon request.
3. Significant Accounting Policies.
The Fund is an investment company and applies the accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies. The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP), which require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from those estimates. Subsequent events, if any, through the date that the financial statements were issued have been evaluated in the preparation of the financial statements. The Fund's Schedule of Investments lists any underlying mutual funds or exchange-traded funds (ETFs) but does not include the underlying holdings of these funds. The following summarizes the significant accounting policies of the Fund:
 
Investment Valuation. Investments are valued as of 4:00 p.m. Eastern time on the last calendar day of the period. The Board of Trustees (the Board) has designated the Fund's investment adviser as the valuation designee responsible for the fair valuation function and performing fair value determinations as needed. The investment adviser has established a Fair Value Committee (the Committee) to carry out the day-to-day fair valuation responsibilities and has adopted policies and procedures to govern the fair valuation process and the activities of the Committee. In accordance with these fair valuation policies and procedures, which have been approved by the Board, the Fund attempts to obtain prices from one or more third party pricing services or brokers to value its investments. When current market prices, quotations or currency exchange rates are not readily available or reliable, investments will be fair valued in good faith by the Committee, in accordance with the policies and procedures. Factors used in determining fair value vary by investment type and may include market or investment specific events, transaction data, estimated cash flows, and market observations of comparable investments. The frequency that the fair valuation procedures are used cannot be predicted and they may be utilized to a significant extent. The Committee manages the Fund's fair valuation practices and maintains the fair valuation policies and procedures. The Fund's investment adviser reports to the Board information regarding the fair valuation process and related material matters.
 
The Fund categorizes the inputs to valuation techniques used to value its investments into a disclosure hierarchy consisting of three levels as shown below:
 
Level 1 - unadjusted quoted prices in active markets for identical investments
Level 2 - other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, etc.)
Level 3 - unobservable inputs (including the Fund's own assumptions based on the best information available)
 
Valuation techniques used to value the Fund's investments by major category are as follows:
 
Debt securities, including restricted securities, are valued based on evaluated prices received from third party pricing services or from brokers who make markets in such securities. U.S. government and government agency obligations are valued by pricing services who utilize matrix pricing which considers yield or price of bonds of comparable quality, coupon, maturity and type or by broker-supplied prices. When independent prices are unavailable or unreliable, debt securities may be valued utilizing pricing methodologies which consider similar factors that would be used by third party pricing services. Debt securities are generally categorized as Level 2 in the hierarchy but may be Level 3 depending on the circumstances.
 
Investments in open-end mutual funds, including the Fidelity Central Funds, are valued at their closing net asset value (NAV) each business day and are categorized as Level 1 in the hierarchy.
 
Changes in valuation techniques may result in transfers in or out of an assigned level within the disclosure hierarchy. The aggregate value of investments by input level as of February 29, 2024 is included at the end of the Fund's Schedule of Investments.
 
Investment Transactions and Income. For financial reporting purposes, the Fund's investment holdings and NAV include trades executed through the end of the last business day of the period. The NAV per share for processing shareholder transactions is calculated as of the close of business of the New York Stock Exchange (NYSE), normally 4:00 p.m. Eastern time and includes trades executed through the end of the prior business day. Gains and losses on securities sold are determined on the basis of identified cost. Income and capital gain distributions from Fidelity Central Funds, if any, are recorded on the ex-dividend date. Interest income is accrued as earned and includes coupon interest and amortization of premium and accretion of discount on debt securities as applicable.
 
Expenses. Expenses directly attributable to a fund are charged to that fund. Expenses attributable to more than one fund are allocated among the respective funds on the basis of relative net assets or other appropriate methods. Expenses included in the accompanying financial statements reflect the expenses of that fund and do not include any expenses associated with any underlying mutual funds or exchange-traded funds. Although not included in a fund's expenses, a fund indirectly bears its proportionate share of these expenses through the net asset value of each underlying mutual fund or exchange-traded fund. Expense estimates are accrued in the period to which they relate and adjustments are made when actual amounts are known.
 
Income Tax Information and Distributions to Shareholders. Each year, the Fund intends to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code, including distributing substantially all of its taxable income and realized gains. As a result, no provision for U.S. Federal income taxes is required. As of February 29, 2024, the Fund did not have any unrecognized tax benefits in the financial statements; nor is the Fund aware of any tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. The Fund files a U.S. federal tax return, in addition to state and local tax returns as required. The Fund's federal income tax returns are subject to examination by the Internal Revenue Service (IRS) for a period of three fiscal years after they are filed. State and local tax returns may be subject to examination for an additional fiscal year depending on the jurisdiction.
 
Distributions are declared and recorded daily and paid monthly from net investment income. Distributions from realized gains, if any, are declared and recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP.
 
Capital accounts within the financial statements are adjusted for permanent book-tax differences. These adjustments have no impact on net assets or the results of operations. Capital accounts are not adjusted for temporary book-tax differences which will reverse in a subsequent period.
 
Book-tax differences are primarily due to market discount, capital loss carryforwards and losses deferred due to wash sales.
 
As of period end, the cost and unrealized appreciation (depreciation) in securities, and derivatives if applicable, for federal income tax purposes were as follows:
 
Gross unrealized appreciation
$42,677,045
Gross unrealized depreciation
(576,855,309)
Net unrealized appreciation (depreciation)
$(534,178,264)
Tax Cost
$3,880,879,489
 
The tax-based components of distributable earnings as of period end were as follows:
 
Undistributed ordinary income
$164,589
Capital loss carryforward
$(2,282,995,015)
Net unrealized appreciation (depreciation) on securities and other investments
$(534,178,264)
 
Capital loss carryforwards are only available to offset future capital gains of the Fund to the extent provided by regulations and may be limited. The capital loss carryforward information presented below, including any applicable limitation, is estimated as of fiscal period end and is subject to adjustment.
 
Short-term
$(812,706,493)
Long-term
(1,470,288,522)
Total capital loss carryforward
$(2,282,995,015)
 
Due to large redemptions in a prior period, approximately $1,583,982,571 of the Fund's realized capital losses are subject to limitation. Due to this limitation, the Fund will only be permitted to use approximately $75,457,734 of those capital losses per year to offset capital gains. Additionally, the Fund is subject to an annual limit on its use of some of its unrealized capital losses to offset capital gains in future periods. If those losses are realized and the limitation prevents the Fund from using any of those losses in a future period, those capital losses will be available to offset capital gains in subsequent periods.
 
The tax character of distributions paid was as follows:
 
 
Ordinary Income
$126,136,529
$ 133,766,281
 
4. Fees and Other Transactions with Affiliates.
Management Fee. Fidelity Management & Research Company LLC (the investment adviser) and its affiliates provide the Fund with investment management related services for which the Fund pays a monthly management fee that is based on an annual rate of .04% of the Fund's average net assets.
 
Interfund Trades. Funds may purchase from or sell securities to other Fidelity Funds under procedures adopted by the Board. The procedures have been designed to ensure these interfund trades are executed in accordance with Rule 17a-7 of the 1940 Act. Any interfund trades are included within the respective purchases and sales amounts shown in the Purchases and Sales of Investments note. During the period, there were no interfund trades.
 
Subsequent Event - Sub-Advisory Arrangements. Effective March 1, 2024, the Fund's sub-advisory agreements with FMR Investment Management (UK) Limited, Fidelity Management & Research (Hong Kong) Limited, and Fidelity Management & Research (Japan) Limited will be amended to provide that the investment adviser will pay each sub-adviser monthly fees equal to 110% of the sub-adviser's costs for providing sub-advisory services.
5. Committed Line of Credit.
Certain Funds participate with other funds managed by the investment adviser or an affiliate in a $4.25 billion credit facility (the "line of credit") to be utilized for temporary or emergency purposes to fund shareholder redemptions or for other short-term liquidity purposes. The participating funds have agreed to pay commitment fees on their pro-rata portion of the line of credit, which are reflected in Miscellaneous expenses on the Statement of Operations, and are listed below. During the period, there were no borrowings on this line of credit.
 
 
Amount
Fidelity SAI Long-Term Treasury Bond Index Fund
$6,262
 
6. Security Lending.
Funds lend portfolio securities from time to time in order to earn additional income. Lending agents are used, including National Financial Services (NFS), an affiliate of the investment adviser. Pursuant to a securities lending agreement, NFS will receive a fee, which is capped at 9.9% of a fund's daily lending revenue, for its services as lending agent. A fund may lend securities to certain qualified borrowers, including NFS. On the settlement date of the loan, a fund receives collateral (in the form of U.S. Treasury obligations, letters of credit and/or cash) against the loaned securities and maintains collateral in an amount not less than 100% of the market value of the loaned securities during the period of the loan. The market value of the loaned securities is determined at the close of business of a fund and any additional required collateral is delivered to a fund on the next business day. A fund or borrower may terminate the loan at any time, and if the borrower defaults on its obligation to return the securities loaned because of insolvency or other reasons, a fund may apply collateral received from the borrower against the obligation. A fund may experience delays and costs in recovering the securities loaned. Any cash collateral received is invested in the Fidelity Securities Lending Cash Central Fund. Any loaned securities are identified as such in the Schedule of Investments, and the value of loaned securities and cash collateral at period end, as applicable, are presented in the Statement of Assets and Liabilities. Security lending income represents the income earned on investing cash collateral, less rebates paid to borrowers and any lending agent fees associated with the loan, plus any premium payments received for lending certain types of securities. Security lending income is presented in the Statement of Operations as a component of income from Fidelity Central Funds. Affiliated security lending activity, if any, was as follows:
 
 
Total Security Lending Fees Paid to NFS
Security Lending Income From Securities Loaned to NFS
Value of Securities Loaned to NFS at Period End
Fidelity SAI Long-Term Treasury Bond Index Fund
$293
$-
$-
 
7. Expense Reductions.
The investment adviser contractually agreed to reimburse the Fund to the extent annual operating expenses exceeded .03% of average net assets. This reimbursement will remain in place through June 30, 2025. Some expenses, for example the compensation of the independent Trustees, and certain miscellaneous expenses such as proxy and shareholder meeting expenses, are excluded from this reimbursement. During the period this reimbursement reduced the Fund's expenses by $511,822.
8. Other.
A fund's organizational documents provide former and current trustees and officers with a limited indemnification against liabilities arising in connection with the performance of their duties to the fund. In the normal course of business, a fund may also enter into contracts that provide general indemnifications. A fund's maximum exposure under these arrangements is unknown as this would be dependent on future claims that may be made against a fund. The risk of material loss from such claims is considered remote.
 
At the end of the period, the following mutual funds managed by the investment adviser or its affiliates were the owners of record of 10% or more of the total outstanding shares.
 
 
 
 
Strategic Advisers Core Income Fund
Strategic Advisers Fidelity Core Income Fund
Fidelity SAI Long-Term Treasury Bond Index Fund
13%
81%
 
Mutual funds managed by the investment adviser or its affiliates, in aggregate, were the owners of record of more than 20% of the total outstanding shares.
 
Fund
% of shares held
Fidelity SAI Long-Term Treasury Bond Index Fund
94%
 
9. Risk and Uncertainties.
Many factors affect a fund's performance. Developments that disrupt global economies and financial markets, such as pandemics, epidemics, outbreaks of infectious diseases, war, terrorism, and environmental disasters, may significantly affect a fund's investment performance. The effects of these developments to a fund will be impacted by the types of securities in which a fund invests, the financial condition, industry, economic sector, and geographic location of an issuer, and a fund's level of investment in the securities of that issuer. Significant concentrations in security types, issuers, industries, sectors, and geographic locations may magnify the factors that affect a fund's performance.
Report of Independent Registered Public Accounting Firm
To the Board of Trustees of Fidelity Salem Street Trust and the Shareholders of Fidelity SAI Long-Term Treasury Bond Index Fund:
Opinion on the Financial Statements and Financial Highlights
We have audited the accompanying statement of assets and liabilities of Fidelity SAI Long-Term Treasury Bond Index Fund (the "Fund"), a fund of Fidelity Salem Street Trust, including the schedule of investments, as of February 29, 2024, the related statement of operations for the year then ended, the statement of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended, and the related notes. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Fund as of February 29, 2024, and the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on the Fund's financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements and financial highlights. Our procedures included confirmation of securities owned as of February 29, 2024, by correspondence with the custodian and brokers; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.
/s/ Deloitte & Touche LLP
Boston, Massachusetts
April 11, 2024
We have served as the auditor of one or more of the Fidelity investment companies since 1999.
Trustees and Officers
TRUSTEES AND OFFICERS
The Trustees, Members of the Advisory Board (if any), and officers of the trust and fund, as applicable, are listed below. The Board of Trustees governs the fund and is responsible for protecting the interests of shareholders. The Trustees are experienced executives who meet periodically throughout the year to oversee the fund's activities, review contractual arrangements with companies that provide services to the fund, oversee management of the risks associated with such activities and contractual arrangements, and review the fund's performance. Except for Jonathan Chiel, each of the Trustees oversees 315 funds. Mr. Chiel oversees 192 funds.
The Trustees hold office without limit in time except that (a) any Trustee may resign; (b) any Trustee may be removed by written instrument, signed by at least two-thirds of the number of Trustees prior to such removal; (c) any Trustee who requests to be retired or who has become incapacitated by illness or injury may be retired by written instrument signed by a majority of the other Trustees; and (d) any Trustee may be removed at any special meeting of shareholders by a two-thirds vote of the outstanding voting securities of the trust. Each Trustee who is not an interested person (as defined in the 1940 Act) of the trust and the fund is referred to herein as an Independent Trustee. Each Independent Trustee shall retire not later than the last day of the calendar year in which his or her 75th birthday occurs. The Independent Trustees may waive this mandatory retirement age policy with respect to individual Trustees. Officers and Advisory Board Members hold office without limit in time, except that any officer or Advisory Board Member may resign or may be removed by a vote of a majority of the Trustees at any regular meeting or any special meeting of the Trustees. Except as indicated, each individual has held the office shown or other offices in the same company for the past five years.
The fund's Statement of Additional Information (SAI) includes more information about the Trustees. To request a free copy, call Fidelity at 1-800-544-3455.
Experience, Skills, Attributes, and Qualifications of the Trustees. The Governance and Nominating Committee has adopted a statement of policy that describes the experience, qualifications, attributes, and skills that are necessary and desirable for potential Independent Trustee candidates (Statement of Policy). The Board believes that each Trustee satisfied at the time he or she was initially elected or appointed a Trustee, and continues to satisfy, the standards contemplated by the Statement of Policy. The Governance and Nominating Committee also engages professional search firms to help identify potential Independent Trustee candidates who have the experience, qualifications, attributes, and skills consistent with the Statement of Policy. From time to time, additional criteria based on the composition and skills of the current Independent Trustees, as well as experience or skills that may be appropriate in light of future changes to board composition, business conditions, and regulatory or other developments, have also been considered by the professional search firms and the Governance and Nominating Committee. In addition, the Board takes into account the Trustees' commitment and participation in Board and committee meetings, as well as their leadership of standing and ad hoc committees throughout their tenure.
In determining that a particular Trustee was and continues to be qualified to serve as a Trustee, the Board has considered a variety of criteria, none of which, in isolation, was controlling. The Board believes that, collectively, the Trustees have balanced and diverse experience, qualifications, attributes, and skills, which allow the Board to operate effectively in governing the fund and protecting the interests of shareholders. Information about the specific experience, skills, attributes, and qualifications of each Trustee, which in each case led to the Board's conclusion that the Trustee should serve (or continue to serve) as a trustee of the fund, is provided below.
Board Structure and Oversight Function. Abigail P. Johnson is an interested person and currently serves as Chairman. The Trustees have determined that an interested Chairman is appropriate and benefits shareholders because an interested Chairman has a personal and professional stake in the quality and continuity of services provided to the fund. Independent Trustees exercise their informed business judgment to appoint an individual of their choosing to serve as Chairman, regardless of whether the Trustee happens to be independent or a member of management. The Independent Trustees have determined that they can act independently and effectively without having an Independent Trustee serve as Chairman and that a key structural component for assuring that they are in a position to do so is for the Independent Trustees to constitute a substantial majority for the Board. The Independent Trustees also regularly meet in executive session. Michael E. Kenneally serves as Chairman of the Independent Trustees and as such (i) acts as a liaison between the Independent Trustees and management with respect to matters important to the Independent Trustees and (ii) with management prepares agendas for Board meetings.
Fidelity® funds are overseen by different Boards of Trustees. The fund's Board oversees Fidelity's investment-grade bond, money market, asset allocation and certain equity funds, and other Boards oversee Fidelity's alternative investment, high income and other equity funds. The asset allocation funds may invest in Fidelity® funds that are overseen by such other Boards. The use of separate Boards, each with its own committee structure, allows the Trustees of each group of Fidelity® funds to focus on the unique issues of the funds they oversee, including common research, investment, and operational issues. On occasion, the separate Boards establish joint committees to address issues of overlapping consequences for the Fidelity® funds overseen by each Board.
The Trustees operate using a system of committees to facilitate the timely and efficient consideration of all matters of importance to the Trustees, the fund, and fund shareholders and to facilitate compliance with legal and regulatory requirements and oversight of the fund's activities and associated risks. The Board, acting through its committees, has charged FMR and its affiliates with (i) identifying events or circumstances the occurrence of which could have demonstrably adverse effects on the fund's business and/or reputation; (ii) implementing processes and controls to lessen the possibility that such events or circumstances occur or to mitigate the effects of such events or circumstances if they do occur; and (iii) creating and maintaining a system designed to evaluate continuously business and market conditions in order to facilitate the identification and implementation processes described in (i) and (ii) above. Because the day-to-day operations and activities of the fund are carried out by or through FMR, its affiliates, and other service providers, the fund's exposure to risks is mitigated but not eliminated by the processes overseen by the Trustees. While each of the Board's committees has responsibility for overseeing different aspects of the fund's activities, oversight is exercised primarily through the Operations and Audit Committees. In addition, an ad hoc Board committee of Independent Trustees has worked with FMR to enhance the Board's oversight of investment and financial risks, legal and regulatory risks, technology risks, and operational risks, including the development of additional risk reporting to the Board. Appropriate personnel, including but not limited to the fund's Chief Compliance Officer (CCO), FMR's internal auditor, the independent accountants, the fund's Treasurer and portfolio management personnel, make periodic reports to the Board's committees, as appropriate, including an annual review of Fidelity's risk management program for the Fidelity® funds. The responsibilities of each standing committee, including their oversight responsibilities, are described further under "Standing Committees of the Trustees."
Interested Trustees*:
Correspondence intended for a Trustee who is an interested person may be sent to Fidelity Investments, 245 Summer Street, Boston, Massachusetts 02210.
Name, Year of Birth; Principal Occupations and Other Relevant Experience+
Jonathan Chiel (1957)
Year of Election or Appointment: 2016
Trustee
Mr. Chiel also serves as Trustee of other Fidelity® funds. Mr. Chiel is Senior Counsel at Fidelity Investments (diversified financial services company, 2024-present). Previously, Mr. Chiel served as General Counsel (2012-2024) and Head of Legal, Risk and Compliance (2022-2024) for Fidelity Investments; Executive Vice President and General Counsel for FMR LLC (diversified financial services company, 2012-2024); Director and President of OH Company LLC (holding company, 2018-2024); General Counsel (2004-2012) and Senior Vice President and Deputy General Counsel (2000-2004) for John Hancock Financial Services; a partner with Choate, Hall & Stewart (law firm, 1996-2000); and an Assistant United States Attorney for the United States Attorney's Office of the District of Massachusetts (1986-1995), including Chief of the Criminal Division (1993-1995). Mr. Chiel is a director on the boards of the Harvard Law School Center on the Legal Profession and the U.S. Chamber Litigation Center.
Abigail P. Johnson (1961)
Year of Election or Appointment: 2009
Trustee
Chairman of the Board of Trustees
Ms. Johnson also serves as Trustee of other Fidelity® funds. Ms. Johnson serves as Chairman (2016-present), Chief Executive Officer (2014-present), and Director (2007-present) of FMR LLC (diversified financial services company), President of Fidelity Financial Services (2012-present) and President of Personal, Workplace and Institutional Services (2005-present). Ms. Johnson is Chairman and Director of Fidelity Management & Research Company LLC (investment adviser firm, 2011-present). Previously, Ms. Johnson served as Chairman and Director of FMR Co., Inc. (investment adviser firm, 2011-2019), Vice Chairman (2007-2016) and President (2013-2016) of FMR LLC, President and a Director of Fidelity Management & Research Company (2001-2005), a Trustee of other investment companies advised by Fidelity Management & Research Company, Fidelity Investments Money Management, Inc. (investment adviser firm), and FMR Co., Inc. (2001-2005), Senior Vice President of the Fidelity® funds (2001-2005), and managed a number of Fidelity® funds.
Jennifer Toolin McAuliffe (1959)
Year of Election or Appointment: 2016
Trustee
Ms. McAuliffe also serves as Trustee of other Fidelity® funds and as Trustee of Fidelity Charitable (2020-present). Previously, Ms. McAuliffe served as Co-Head of Fixed Income of Fidelity Investments Limited (now known as FIL Limited (FIL)) (diversified financial services company), Director of Research for FIL's credit and quantitative teams in London, Hong Kong and Tokyo and Director of Research for taxable and municipal bonds at Fidelity Investments Money Management, Inc. Ms. McAuliffe previously served as a member of the Advisory Board of certain Fidelity® funds (2016). Ms. McAuliffe was previously a lawyer at Ropes & Gray LLP and an international banker at Chemical Bank NA (now JPMorgan Chase & Co.). Ms. McAuliffe also currently serves as director or trustee of several not-for-profit entities.
Christine J. Thompson (1958)
Year of Election or Appointment: 2023
Trustee
Ms. Thompson also serves as a Trustee of other Fidelity® funds. Ms. Thompson serves as Leader of Advanced Technologies for Investment Management at Fidelity Investments (2018-present). Previously, Ms. Thompson served as Chief Investment Officer in the Bond group at Fidelity Management & Research Company (2010-2018) and held various other roles including Director of municipal bond portfolio managers and Portfolio Manager of certain Fidelity® funds.
* Determined to be an "Interested Trustee" by virtue of, among other things, his or her affiliation with the trust or various entities under common control with FMR.
+ The information includes the Trustee's principal occupation during the last five years and other information relating to the experience, attributes, and skills relevant to the Trustee's qualifications to serve as a Trustee, which led to the conclusion that the Trustee should serve as a Trustee for the fund.
Independent Trustees:
Correspondence intended for an Independent Trustee may be sent to Fidelity Investments, P.O. Box 55235, Boston, Massachusetts 02205-5235.
Name, Year of Birth; Principal Occupations and Other Relevant Experience+
Elizabeth S. Acton (1951)
Year of Election or Appointment: 2013
Trustee
Ms. Acton also serves as Trustee of other Fidelity® funds. Prior to her retirement, Ms. Acton served as Executive Vice President, Finance (2011-2012), Executive Vice President, Chief Financial Officer (2002-2011) and Treasurer (2004-2005) of Comerica Incorporated (financial services). Prior to joining Comerica, Ms. Acton held a variety of positions at Ford Motor Company (1983-2002), including Vice President and Treasurer (2000-2002) and Executive Vice President and Chief Financial Officer of Ford Motor Credit Company (1998-2000). Ms. Acton currently serves as a member of the Board and Audit and Finance Committees of Beazer Homes USA, Inc. (homebuilding, 2012-present). Ms. Acton previously served as a member of the Advisory Board of certain Fidelity® funds (2013-2016).
Laura M. Bishop (1961)
Year of Election or Appointment: 2023
Trustee
Ms. Bishop also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Prior to her retirement, Ms. Bishop held a variety of positions at United Services Automobile Association (2001-2020), including Executive Vice President and Chief Financial Officer (2014-2020) and Senior Vice President and Deputy Chief Financial Officer (2012-2014). Ms. Bishop currently serves as a member of the Audit Committee and Compensation and Personnel Committee (2021-present) of the Board of Directors of Korn Ferry (global organizational consulting). Previously, Ms. Bishop served as a Member of the Advisory Board of certain Fidelity® funds (2022-2023).    
Ann E. Dunwoody (1953)
Year of Election or Appointment: 2018
Trustee
General Dunwoody also serves as Trustee of other Fidelity® funds. General Dunwoody (United States Army, Retired) was the first woman in U.S. military history to achieve the rank of four-star general and prior to her retirement in 2012 held a variety of positions within the U.S. Army, including Commanding General, U.S. Army Material Command (2008-2012). General Dunwoody currently serves as a member of the Board, Chair of Nomination Committee and a member of the Corporate Governance Committee of Kforce Inc. (professional staffing services, 2016-present) and a member of the Board of Automattic Inc. (software engineering, 2018-present). Previously, General Dunwoody served as President of First to Four LLC (leadership and mentoring services, 2012-2022), a member of the Advisory Board and Nominating and Corporate Governance Committee of L3 Technologies, Inc. (communication, electronic, sensor and aerospace systems, 2013-2019) and a member of the Board and Audit and Sustainability and Corporate Responsibility Committees of Republic Services, Inc. (waste collection, disposal and recycling, 2013-2016). General Dunwoody also serves on several boards for non-profit organizations, including as a member of the Board, Chair of the Nomination and Governance Committee and a member of the Audit Committee of the Noble Reach Foundation (formerly Logistics Management Institute) (consulting non-profit, 2012-present) and a member of the Board of ThanksUSA (military family education non-profit, 2014-present). Previously, General Dunwoody served as a member of the Board of Florida Institute of Technology (2015-2022) and a member of the Council of Trustees for the Association of the United States Army (advocacy non-profit, 2013-2021). General Dunwoody previously served as a member of the Advisory Board of certain Fidelity® funds (2018).
Robert F. Gartland (1951)
Year of Election or Appointment: 2010
Trustee
Mr. Gartland also serves as Trustee of other Fidelity® funds. Prior to his retirement, Mr. Gartland held a variety of positions at Morgan Stanley (financial services, 1979-2007), including Managing Director (1987-2007) and Chase Manhattan Bank (1975-1978). Mr. Gartland previously served as Chairman and an investor in Gartland & Mellina Group Corp. (consulting, 2009-2019), as a member of the Board of National Securities Clearing Corporation (1993-1996) and as Chairman of TradeWeb (2003-2004).
Robert W. Helm (1957)
Year of Election or Appointment: 2023
Trustee
Mr. Helm also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Mr. Helm was formerly Deputy Chairman (2003-2020), partner (1991-2020) and an associate (1984-1991) of Dechert LLP (formerly Dechert Price & Rhoads). Mr. Helm currently serves on boards and committees of several not-for-profit organizations, including as a Trustee and member of the Executive Committee of the Baltimore Council on Foreign Affairs, a member of the Board of Directors of the St. Vincent de Paul Society of Baltimore and a member of the Life Guard Society of Mt. Vernon. Previously, Mr. Helm served as a Member of the Advisory Board of certain Fidelity® funds (2021-2023).     
Michael E. Kenneally (1954)
Year of Election or Appointment: 2009
Trustee
Chairman of the Independent Trustees
Mr. Kenneally also serves as Trustee of other Fidelity® funds and was Vice Chairman (2018-2021) of the Independent Trustees of certain Fidelity® funds. Prior to retirement in 2005, he was Chairman and Global Chief Executive Officer of Credit Suisse Asset Management, the worldwide fund management and institutional investment business of Credit Suisse Group. Previously, Mr. Kenneally was an Executive Vice President and the Chief Investment Officer for Bank of America. In this role, he was responsible for the investment management, strategy and products delivered to the bank's institutional, high-net-worth and retail clients. Earlier, Mr. Kenneally directed the organization's equity and quantitative research groups. He began his career as a research analyst and then spent more than a dozen years as a portfolio manager for endowments, pension plans and mutual funds. He earned the Chartered Financial Analyst (CFA) designation in 1991.     
Mark A. Murray (1954)
Year of Election or Appointment: 2016
Trustee
Mr. Murray also serves as Trustee of other Fidelity® funds. Previously, Mr. Murray served as Co-Chief Executive Officer (2013-2016), President (2006-2013) and Vice Chairman (2013-2020) of Meijer, Inc. Mr. Murray serves as a member of the Board (2009-present) and Public Policy and Responsibility Committee (2009-present) and Chair of the Nuclear Review Committee (2019-present) of DTE Energy Company (diversified energy company). Mr. Murray previously served as a member of the Board of Spectrum Health (not-for-profit health system, 2015-2019) and as a member of the Board and Audit Committee and Chairman of the Nominating and Corporate Governance Committee of Universal Forest Products, Inc. (manufacturer and distributor of wood and wood-alternative products, 2004-2016). Mr. Murray also serves as a member of the Board of many community and professional organizations. Mr. Murray previously served as a member of the Advisory Board of certain Fidelity® funds (2016).
Carol J. Zierhoffer (1960)
Year of Election or Appointment: 2023
Trustee
Ms. Zierhoffer also serves as Trustee or Member of the Advisory Board of other Fidelity® funds. Prior to her retirement, Ms. Zierhoffer held a variety of positions at Bechtel Corporation (engineering company, 2013-2019), including Principal Vice President and Chief Information Officer (2013-2016) and Senior Vice President and Chief Information Officer (2016-2019). Ms. Zierhoffer currently serves as a member of the Board of Directors, Audit Committee and Compensation Committee of Allscripts Healthcare Solutions, Inc. (healthcare technology, 2020-present) and as a member of the Board of Directors, Audit and Finance Committee and Nominating and Governance Committee of Atlas Air Worldwide Holdings, Inc. (aviation operating services, 2021-present). Previously, Ms. Zierhoffer served as a member of the Board of Directors and Audit Committee and as the founding Chair of the Information Technology Committee of MedAssets, Inc. (healthcare technology, 2013-2016), and as a Member of the Advisory Board of certain Fidelity® funds (2023).    
+ The information includes the Trustee's principal occupation during the last five years and other information relating to the experience, attributes, and skills relevant to the Trustee's qualifications to serve as a Trustee, which led to the conclusion that the Trustee should serve as a Trustee for the fund.
Advisory Board Members and Officers:
Correspondence intended for a Member of the Advisory Board (if any) may be sent to Fidelity Investments, P.O. Box 55235, Boston, Massachusetts 02205-5235. Correspondence intended for an officer may be sent to Fidelity Investments, 245 Summer Street, Boston, Massachusetts 02210.
Name, Year of Birth; Principal Occupations+
Lester Owens (1957)
Year of Election or Appointment: 2024
Member of the Advisory Board
Mr. Owens also serves as a Member of the Advisory Board of other Fidelity® funds. Prior to his retirement, Mr. Owens served as Senior Executive Vice President, Head of Operations, and member of the Operating Committee of Wells Fargo & Company (financial services, 2020-2023). Mr. Owens currently serves as Chairman of the Board of Directors of Robert Wood Johnson Barnabas Health, Inc. (academic healthcare system, 2022-present). Previously, Mr. Owens served as Senior Executive Vice President and Head of Operations at Bank of New York Mellon (financial services, 2019-2020) and held various roles at JPMorgan Chase & Co. (financial services, 2007-2019), including Managing Director for Wholesale Banking Operations. Mr. Owens also previously served as a member of the Board of Directors of the Depository Trust & Clearing Corporation (financial services, 2016) and as Chairman of the Board of Directors of the Clearing House Interbank Payments System (private clearing system, 2015-2016).        
Heather Bonner (1977)
Year of Election or Appointment: 2023
Assistant Treasurer
Ms. Bonner also serves as an officer of other funds. Ms. Bonner is a Senior Vice President (2022-present) and is an employee of Fidelity Investments (2022-present). Ms. Bonner serves as Senior Vice President, Vice President, Treasurer, or Director of certain Fidelity entities. Prior to joining Fidelity, Ms. Bonner served as Managing Director at AQR Capital Management (2013-2022) and was the Treasurer and Principal Financial Officer of the AQR Funds (2013-2022).
Craig S. Brown (1977)
Year of Election or Appointment: 2019
Assistant Treasurer
Mr. Brown also serves as an officer of other funds. Mr. Brown is a Vice President (2015-present) and is an employee of Fidelity Investments. Mr. Brown serves as Assistant Treasurer of FIMM, LLC (2021-present). Previously, Mr. Brown served as Assistant Treasurer of certain Fidelity® funds (2019-2022).     
John J. Burke III (1964)
Year of Election or Appointment: 2018
Chief Financial Officer
Mr. Burke also serves as Chief Financial Officer of other funds. Mr. Burke is Head of Fidelity Fund and Investment Operations (2018-present) and is an employee of Fidelity Investments. Mr. Burke serves as President, Executive Vice President, or Director of certain Fidelity entities. Previously Mr. Burke served as head of Asset Management Investment Operations (2012-2018).
Margaret Carey (1973)
Year of Election or Appointment: 2023
Secretary and Chief Legal Officer (CLO)
Ms. Carey also serves as an officer of other funds and as CLO of certain Fidelity entities. Ms. Carey is a Senior Vice President, Deputy General Counsel (2019-present) and is an employee of Fidelity Investments.        
David J. Carter (1973)
Year of Election or Appointment: 2020
Assistant Secretary
Mr. Carter also serves as Assistant Secretary of other funds. Mr. Carter is a Senior Vice President, Deputy General Counsel (2022-present) and is an employee of Fidelity Investments. Mr. Carter serves as Chief Legal Officer of Fidelity Investments Institutional Operations Company LLC - Shareholder Division (transfer agent, 2020-present).
Jonathan Davis (1968)
Year of Election or Appointment: 2010
Assistant Treasurer
Mr. Davis also serves as an officer of other funds. Mr. Davis is a Vice President (2006-present) and is an employee of Fidelity Investments. Mr. Davis serves as Assistant Treasurer or Director of certain Fidelity entities.        
Laura M. Del Prato (1964)
Year of Election or Appointment: 2018
President and Treasurer
Ms. Del Prato also serves as an officer of other funds. Ms. Del Prato is a Senior Vice President (2017-present) and is an employee of Fidelity Investments. Ms. Del Prato serves as Vice President or Assistant Treasurer of certain Fidelity entities. Previously, Ms. Del Prato served as President and Treasurer of The North Carolina Capital Management Trust: Cash Portfolio and Term Portfolio (2018-2020).     
Robin Foley (1964)
Year of Election or Appointment: 2023
Vice President
Ms. Foley also serves as Vice President of other funds. Ms. Foley serves as Head of Fidelity's Fixed Income division (2023-present) and is an employee of Fidelity Investments. Previously, Ms. Foley served as Chief Investment Officer of Bonds (2017-2023).     
Christopher M. Gouveia (1973)
Year of Election or Appointment: 2023
Chief Compliance Officer
Mr. Gouveia also serves as Chief Compliance Officer of other funds. Mr. Gouveia is a Senior Vice President of Asset Management Compliance (2019-present) and is an employee of Fidelity Investments. Mr. Gouveia serves as Compliance Officer of Fidelity Management Trust Company (2023-present). Previously, Mr. Gouveia served as Chief Compliance Officer of the North Carolina Capital Management Trust (2016-2019).          
Colm A. Hogan (1973)
Year of Election or Appointment: 2016
Assistant Treasurer
Mr. Hogan also serves as an officer of other funds. Mr. Hogan is a Vice President (2016-present) and is an employee of Fidelity Investments. Mr. Hogan serves as Assistant Treasurer of certain Fidelity entities. Previously, Mr. Hogan served as Deputy Treasurer of certain Fidelity® funds (2016-2020) and Assistant Treasurer of certain Fidelity® funds (2016-2018). 
Chris Maher (1972)
Year of Election or Appointment: 2013
Assistant Treasurer
Mr. Maher also serves as an officer of other funds. Mr. Maher is a Vice President (2008-present) and is an employee of Fidelity Investments. Mr. Maher serves as Assistant Treasurer of certain Fidelity entities. Previously, Mr. Maher served as Assistant Treasurer of certain funds (2013-2020).     
Brett Segaloff (1972)
Year of Election or Appointment: 2021
Anti-Money Laundering (AML) Officer
Mr. Segaloff also serves as AML Officer of other funds. Mr. Segaloff is a Vice President (2022-present) and is an employee of Fidelity Investments. Mr. Segaloff serves as Anti Money Laundering Compliance Officer or Anti Money Laundering/Bank Secrecy Act Compliance Officer of certain Fidelity entities.          
Stacie M. Smith (1974)
Year of Election or Appointment: 2013
Assistant Treasurer
Ms. Smith also serves as an officer of other funds. Ms. Smith is a Senior Vice President (2016-present) and is an employee of Fidelity Investments. Ms. Smith serves as Assistant Treasurer of certain Fidelity entities and has served in other fund officer roles.
Jim Wegmann (1979)
Year of Election or Appointment: 2021
Deputy Treasurer
Mr. Wegmann also serves as an officer of other funds. Mr. Wegmann is a Vice President (2016-present) and is an employee of Fidelity Investments. Mr. Wegmann serves as Assistant Treasurer of FIMM, LLC (2021-present). Previously, Mr. Wegmann served as Assistant Treasurer of certain Fidelity® funds (2019-2021).          
+ The information includes principal occupation during the last five years. 
Shareholder Expense Example  
As a shareholder, you incur two types of costs: (1) transaction costs, which may include sales charges (loads) on purchase payments or redemption proceeds, as applicable and (2) ongoing costs, which generally include management fees, distribution and/or service (12b-1) fees and other Fund expenses. This Example is intended to help you understand your ongoing costs (in dollars) of investing in a fund and to compare these costs with the ongoing costs of investing in other mutual funds.
 
The Example is based on an investment of $1,000 invested at the beginning of the period and held for the entire period (September 1, 2023 to February 29, 2024).
 
Actual Expenses
The first line of the accompanying table provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000.00 (for example, an $8,600 account value divided by $1,000.00 = 8.6), then multiply the result by the number in the first line for a class/Fund under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If any fund is a shareholder of any underlying mutual funds or exchange-traded funds (ETFs) (the Underlying Funds), such fund indirectly bears its proportional share of the expenses of the Underlying Funds in addition to the direct expenses incurred presented in the table. These fees and expenses are not included in the annualized expense ratio used to calculate the expense estimate in the table below.
 
Hypothetical Example for Comparison Purposes
The second line of the accompanying table provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. If any fund is a shareholder of any Underlying Funds, such fund indirectly bears its proportional share of the expenses of the Underlying Funds in addition to the direct expenses as presented in the table. These fees and expenses are not included in the annualized expense ratio used to calculate the expense estimate in the table below.
Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transaction costs. Therefore, the second line of the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher.
 
 
 
 
 
Annualized Expense Ratio- A
 
Beginning Account Value September 1, 2023
 
Ending Account Value February 29, 2024
 
Expenses Paid During Period- C September 1, 2023 to February 29, 2024
 
 
 
 
 
 
 
 
 
 
Fidelity® SAI Long-Term Treasury Bond Index Fund
 
 
 
.03%
 
 
 
 
 
 
Actual
 
 
 
 
 
$ 1,000
 
$ 993.20
 
$ .15
Hypothetical-B
 
 
 
 
 
$ 1,000
 
$ 1,024.71
 
$ .15
 
A   Annualized expense ratio reflects expenses net of applicable fee waivers.
 
B   5% return per year before expenses
 
C   Expenses are equal to the annualized expense ratio, multiplied by the average account value over the period, multiplied by 182/ 366 (to reflect the one-half year period). The fees and expenses of any Underlying Funds are not included in each annualized expense ratio.
 
 
 
Distributions (Unaudited)
 
The dividend and capital gains distributions for the fund(s) are available on Fidelity.com or Institutional.Fidelity.com.
 
A total of 99.59% of the dividends distributed during the fiscal year was derived from interest on U.S. Government securities which is generally exempt from state income tax.
 
The fund designates $126,136,529 of distributions paid during the fiscal year ended 2024 as qualifying to be taxed as section 163(j) interest dividends.
 
The fund will notify shareholders in January 2025 of amounts for use in preparing 2024 income tax returns.
 
 
Board Approval of Investment Advisory Contracts
 
Board Approval of Investment Advisory Contracts and Management Fees
Fidelity SAI Long-Term Treasury Bond Index Fund
Each year, the Board of Trustees, including the Independent Trustees (together, the Board), considers the renewal of the fund's management contract with Fidelity Management & Research Company LLC (FMR) and the sub-advisory agreements (together, the Advisory Contracts) for the fund. FMR and the sub-advisers are referred to herein as the Investment Advisers. The Board, assisted by the advice of fund counsel and Independent Trustees' counsel, requests and considers a broad range of information relevant to the renewal of the Advisory Contracts throughout the year.
The Board meets regularly and, at each of its meetings, covers an extensive agenda of topics and materials and considers factors that are relevant to its annual consideration of the renewal of the fund's Advisory Contracts, including the services and support provided to the fund and its shareholders. The Board's Operations Committee, of which all the Independent Trustees are members, meets regularly throughout the year and requests, receives and considers, among other matters, information related to the annual consideration of the renewal of the fund's Advisory Contracts before making its recommendation to the Board. The Board also meets as needed to review matters specifically related to the Board's annual consideration of the renewal of the Advisory Contracts. Members of the Board may also meet from time to time with trustees of other Fidelity funds through joint ad hoc committees to discuss certain matters relevant to all of the Fidelity funds.
At its September 2023 meeting, the Board unanimously determined to renew the fund's Advisory Contracts. In reaching its determination, the Board considered all factors it believed relevant, including (i) the nature, extent, and quality of the services provided to the fund and its shareholders (including the investment performance of the fund); (ii) the competitiveness relative to peer funds of the fund's management fee and total expense ratio; (iii) the total costs of the services provided by and the profits realized by FMR and its affiliates (Fidelity) from its relationships with the fund; and (iv) the extent to which, if any, economies of scale exist and are realized as the fund grows, and whether any economies of scale are appropriately shared with fund shareholders. The Board also considered the broad range of investment choices available to shareholders from FMR's competitors and that the fund's shareholders have chosen to invest in the fund, which is part of the Fidelity family of funds. The Board's decision to renew the Advisory Contracts was not based on any single factor.
The Board reached a determination, with the assistance of fund counsel and Independent Trustees' counsel and through the exercise of its business judgment, that the renewal of the Advisory Contracts was in the best interests of the fund and its shareholders and that the compensation payable under the Advisory Contracts was fair and reasonable in light of all of the surrounding circumstances.
Nature, Extent, and Quality of Services Provided. The Board considered Fidelity's staffing as it relates to the fund, including the backgrounds and experience of investment personnel, and also considered the Investment Advisers' implementation of the fund's investment program. The Independent Trustees also had discussions with senior management of Fidelity's investment operations and investment groups. The Board considered the structure of the investment personnel compensation program and whether this structure provides appropriate incentives to act in the best interests of the fund. Additionally, the Board considered the portfolio managers' investments, if any, in the funds that they manage.
Resources Dedicated to Investment Management and Support Services. The Board reviewed the general qualifications and capabilities of Fidelity's investment staff, including its size, education, experience, and resources, as well as Fidelity's approach to recruiting, managing, training, and compensating investment personnel. The Board noted the resources devoted to Fidelity's global investment organization, and that Fidelity's analysts have extensive resources, tools and capabilities that allow them to conduct quantitative and fundamental analysis, as well as credit analysis of issuers, counterparties and guarantors. Further, the Board considered that Fidelity's investment professionals have sufficient access to global information and data so as to provide competitive investment results over time, and that those professionals also have access to sophisticated tools that permit them to assess portfolio construction and risk and performance attribution characteristics continuously, as well as to transmit new information and research conclusions rapidly around the world. Additionally, in its deliberations, the Board considered Fidelity's trading, risk management, compliance, cybersecurity, and technology and operations capabilities and resources, which are integral parts of the investment management process.
Shareholder and Administrative Services. The Board considered (i) the nature, extent, quality, and cost of advisory, administrative, and shareholder services performed by the Investment Advisers and their affiliates under the Advisory Contracts and under separate agreements covering transfer agency, pricing and bookkeeping, and securities lending services for the fund; (ii) the nature and extent of Fidelity's supervision of third party service providers, principally custodians, subcustodians, and pricing vendors; and (iii) the resources devoted by Fidelity to, and the record of compliance with, the fund's compliance policies and procedures. The Board also considered the fund's securities lending activities and any payments made to Fidelity relating to securities lending.
The Board noted that the growth of fund assets over time across the complex allows Fidelity to reinvest in the development of services designed to enhance the value and convenience of the Fidelity funds as investment vehicles. These services include 24-hour access to account information and market information over the Internet and through telephone representatives, investor education materials and asset allocation tools. The Board also considered that it reviews customer service metrics such as telephone response times, continuity of services on the website and metrics addressing services at Fidelity Investor Centers.
Investment in a Large Fund Family. The Board considered the benefits to shareholders of investing in a fund that is part of a large family of funds offering a variety of investment disciplines and providing a large variety of fund investor services. The Board noted that Fidelity had taken, or had made recommendations to the Board that resulted in the Fidelity funds taking, a number of actions over the previous year that benefited particular funds and/or the Fidelity funds in general.
Investment Performance. The Board took into account discussions that occur with representatives of the Investment Advisers, and reports that it receives, at Board meetings throughout the year relating to fund investment performance. In this regard the Board noted that as part of regularly scheduled fund reviews and other reports to the Board on fund performance, the Board considered annualized return information for the fund for different time periods, measured against the securities market index the fund seeks to track (benchmark index) and an appropriate peer group of funds with similar objectives (peer group). The Board also periodically considers the fund's tracking error versus its benchmark index. In its evaluation of fund investment performance at meetings throughout the year, the Board gave particular attention to information indicating underperformance of certain Fidelity funds over different time periods and discussed with the Investment Advisers the reasons for such underperformance.
In addition to reviewing absolute and relative fund performance, the Independent Trustees periodically consider the appropriateness of fund performance metrics in evaluating the results achieved. In general, the Independent Trustees believe that an index fund's performance should be evaluated based on gross performance (before fees and expenses but after transaction costs) of the fund compared to the fund's benchmark index, over appropriate time periods taking into account relevant factors including the following: general market conditions; the characteristics of the fund's benchmark index; the extent to which statistical sampling is employed; any securities lending revenues; and fund cash flows and other factors.
Based on its review, the Board concluded that the nature, extent, and quality of services provided to the fund under the Advisory Contracts should continue to benefit the shareholders of the fund.
Competitiveness of Management Fee and Total Expense Ratio. The Board was provided with information regarding industry trends in management fees and expenses. In its review of the fund's management fee and total expense ratio, the Board considered the fund's management fee rate as well as other fund or class expenses, as applicable, such as transfer agent fees, pricing and bookkeeping fees, and custodial, legal, and audit fees. The Board noted that Fidelity may agree to waive fees or reimburse expenses from time to time, and the extent to which, if any, it has done so for the fund.
Comparisons of Management Fees and Total Expense Ratios. Among other things, the Board reviewed data for selected groups of competitive funds and classes (referred to as "mapped groups") that were compiled by Fidelity based on combining similar investment objective categories (as classified by Lipper) that have comparable investment mandates. The data reviewed by the Board included (i) gross management fee comparisons (before taking into account expense reimbursements or caps) relative to the total universe of funds within the mapped group; (ii) gross management fee comparisons relative to a subset of non-Fidelity funds in the mapped group that are similar in size and management fee structure to the fund (referred to as the "asset size peer group"); (iii) total expense comparisons of the fund relative to funds and classes in the mapped group that have a similar sales load structure to the fund (referred to as the "similar sales load structure group"); and (iv) total expense comparisons of the fund relative to funds and classes in the similar sales load structure group that are similar in size and management fee structure to the fund (referred to as the "total expense asset size peer group"). The total expense asset size peer group comparison excludes performance adjustments and fund-paid 12b-1 fees to eliminate variability in fee structures.
The information provided to the Board indicated that the fund's management fee rate ranked below the competitive median of the mapped group for 2022 and below the competitive median of the asset size peer group for 2022. Further, the information provided to the Board indicated that the total expense ratio of the fund ranked below the competitive median of the similar sales load structure group for 2022 and below the competitive median of the total expense asset size peer group for 2022.
Other Contractual Arrangements. The Board further considered that FMR has contractually agreed to reimburse the fund to the extent that total operating expenses, with certain exceptions, as a percentage of its average net assets, exceed 0.03% through June 30, 2024.
Fees Charged to Other Fidelity Clients. The Board also considered Fidelity fee structures and other information with respect to clients of Fidelity, such as other funds advised or subadvised by Fidelity, pension plan clients, and other institutional clients with similar mandates. The Board noted that a joint ad hoc committee created by it and the boards of other Fidelity funds periodically reviews and compares Fidelity's institutional investment advisory business with its business of providing services to the Fidelity funds and also noted the most recent findings of the committee. The Board noted that the committee's review included a consideration of the differences in services provided, fees charged, and costs incurred, as well as competition in the markets serving the different categories of clients.
Based on its review, the Board concluded that the fund's management fee is fair and reasonable in light of the services that the fund receives and the other factors considered. Further, based on its review of total expense ratios and fees charged to other Fidelity clients, the Board concluded that the fund's total expense ratio was reasonable in light of the services that the fund and its shareholders receive and the other factors considered.
Costs of the Services and Profitability. The Board considered the revenues earned and the expenses incurred by Fidelity in conducting the business of developing, marketing, distributing, managing, administering and servicing the fund and servicing the fund's shareholders. The Board also considered the level of Fidelity's profits in respect of all the Fidelity funds.
On an annual basis, Fidelity presents to the Board information about the profitability of its relationships with the fund. Fidelity calculates profitability information for each fund, as well as aggregate profitability information for groups of Fidelity funds and all Fidelity funds, using a series of detailed revenue and cost allocation methodologies which originate with the books and records of Fidelity on which Fidelity's audited financial statements are based. The Audit Committee of the Board reviews any significant changes from the prior year's methodologies and the full Board approves such changes.
A public accounting firm has been engaged annually by the Board as part of the Board's assessment of Fidelity's profitability analysis. The engagement includes the review and assessment of the methodologies used by Fidelity in determining the revenues and expenses attributable to Fidelity's fund business, and completion of agreed-upon procedures in respect of the mathematical accuracy of certain fund profitability information and its conformity to established allocation methodologies. After considering the reports issued under the engagement and information provided by Fidelity, the Board concluded that while other allocation methods may also be reasonable, Fidelity's profitability methodologies are reasonable in all material respects.
The Board also reviewed Fidelity's non-fund businesses and potential indirect benefits such businesses may have received as a result of their association with Fidelity's fund business (i.e., fall-out benefits) as well as cases where Fidelity's affiliates may benefit from the funds' business. The Board considered areas where potential indirect benefits to the Fidelity funds from their relationships with Fidelity may exist. The Board's consideration of these matters was informed by the findings of a joint ad hoc committee created by it and the boards of other Fidelity funds to evaluate potential fall-out benefits.
The Board considered the costs of the services provided by and the profits realized by Fidelity in connection with the operation of the fund and was satisfied that the profitability was not excessive.
Economies of Scale. The Board considered whether there have been economies of scale in respect of the management of the Fidelity funds, whether the Fidelity funds (including the fund) have appropriately benefited from any such economies of scale, and whether there is potential for realization of any further economies of scale. The Board considered the extent to which the fund will benefit from economies of scale as assets grow through increased services to the fund, through waivers or reimbursements, or through fee or expense ratio reductions. The Board also noted that a committee created by it and the boards of other Fidelity funds periodically analyzes whether Fidelity attains economies of scale in respect of the management and servicing of the Fidelity funds, whether the Fidelity funds have appropriately benefited from such economies of scale, and whether there is potential for realization of any further economies of scale.
The Board concluded, taking into account the analysis of the committee, that economies of scale, if any, are being appropriately shared between fund shareholders and Fidelity.
Additional Information Requested by the Board. In order to develop fully the factual basis for consideration of the Fidelity funds' advisory contracts, the Board requested and received additional information on certain topics, including: (i) Fidelity's fund profitability methodology, profitability trends for certain funds, the allocation of various costs to different funds, and the impact of certain factors on fund profitability results; (ii) portfolio manager changes that have occurred during the past year and Fidelity's views regarding portfolio manager investment in the Fidelity funds that they manage; (iii) hiring, training, and retaining personnel; (iv) the arrangements with and compensation paid to certain fund sub-advisers and the treatment of such compensation within Fidelity's fund profitability methodology; (v) the terms of the funds' various management fee structures, including the basic group fee and the terms of Fidelity's voluntary expense limitation arrangements; (vi) Fidelity's transfer agent, pricing and bookkeeping fees, expense and service structures for different funds and classes relative to competitive trends and market conditions; (vii) the impact on fund profitability of recent industry trends, such as the growth in passively managed funds and the changes in flows for different types of funds; (viii) the types of management fee and total expense comparisons provided, and the challenges and limitations associated with such information; (ix) explanations regarding the relative total expense ratios and management fees of certain funds and classes, total expense and management fee competitive trends, and methodologies for total expense and management fee competitive comparisons; (x) information concerning expense limitations applicable to certain funds; and (xi) matters related to money market funds, exchange-traded funds, and target date funds.
Conclusion. Based on its evaluation of all of the conclusions noted above, and after considering all factors it believed relevant, the Board, including the Independent Trustees, concluded that the advisory and sub-advisory fee arrangements are fair and reasonable in light of all of the surrounding circumstances, and that the fund's Advisory Contracts should be renewed through September 30, 2024.
Board Approval of Investment Advisory Contracts
Fidelity SAI Long-Term Treasury Bond Index Fund
At its January 2024 meeting, the Board of Trustees, including the Independent Trustees (together, the Board), approved amended and restated sub-advisory agreements (the Sub-Advisory Contracts) for the fund, including the fund's sub-advisory agreements with FMR Investment Management (UK) Limited (FMR UK), Fidelity Management & Research (Hong Kong) Limited (FMR H.K.), and Fidelity Management & Research (Japan) Limited (FMR Japan). The Sub-Advisory Contracts will be effective March 1, 2024. The Board will consider the annual renewal of the fund's Sub-Advisory Contracts in September 2024, following its review of additional materials provided by FMR.
The Board considered the Sub-Advisory Contracts, which changed the arrangements for fees paid by FMR to the sub-advisers under the agreements. The Board noted that the agreements with FMR UK, FMR H.K., and FMR Japan were amended to provide that FMR will compensate each sub-adviser at a fee equal to 110% of the sub-adviser's costs incurred in providing services under the agreement. The Board considered that, under the Sub-Advisory Contracts, FMR, and not the fund, will continue to pay the sub-advisory fees to each applicable sub-adviser, and that the management fee paid by the fund under the management contract with FMR will remain unchanged.
The Board considered that the approval of the fund's Sub-Advisory Contracts will not result in any changes in the investment process or strategies employed in the management of the fund's assets or the day-to-day management of the fund or the persons primarily responsible for such management. Further, the Board considered that the Sub-Advisory Contracts would not change the obligations and services of FMR and its affiliates on behalf of the fund, and, in particular, there would be no change in the nature and level of services provided to the fund by FMR and its affiliates.
In connection with its consideration of future renewals of the fund's advisory contracts, the Board will consider: (i) the nature, extent and quality of services provided to the funds, including shareholder and administrative services and investment performance; (ii) the competitiveness of the management fee and total expenses for the fund; (iii) the costs of the services and profitability, including the revenues earned and the expenses incurred in conducting the business of developing, marketing, distributing, managing, administering, and servicing the fund and its shareholders, to the extent applicable; and (iv) whether there have been economies of scale in respect of the Fidelity funds, whether the Fidelity funds (including the fund) have appropriately benefited from any such economies of scale, and whether there is the potential for realization of any further economies.
Based on its evaluation of all of the conclusions noted above, and after considering all factors it believed relevant, the Board concluded that the fund's management fee structure is fair and reasonable, and that the fund's Sub-Advisory Contracts should be approved.
 
Liquidity Risk Management Program
The Securities and Exchange Commission adopted Rule 22e-4 under the Investment Company Act of 1940 (the Liquidity Rule) to promote effective liquidity risk management throughout the open-end investment company industry, thereby reducing the risk that funds will be unable to meet their redemption obligations and mitigating dilution of the interests of fund shareholders.
The Fund has adopted and implemented a liquidity risk management program (the Program) reasonably designed to assess and manage the Fund's liquidity risk and to comply with the requirements of the Liquidity Rule. The Fund's Board of Trustees (the Board) has designated the Fund's investment adviser as administrator of the Program. The Fidelity advisers have established a Liquidity Risk Management Committee (the LRM Committee) to manage the Program for each of the Fidelity Funds. The LRM Committee monitors the adequacy and effectiveness of implementation of the Program and on a periodic basis assesses each Fund's liquidity risk based on a variety of factors including (1) the Fund's investment strategy, (2) portfolio liquidity and cash flow projections during normal and reasonably foreseeable stressed conditions, (3) shareholder redemptions, (4) borrowings and other funding sources and (5) certain factors specific to ETFs including the effect of the Fund's prices and spreads, market participants, and basket compositions on the overall liquidity of the Fund's portfolio, as applicable.
In accordance with the Program, each of the Fund's portfolio investments is classified into one of four defined liquidity categories based on a determination of a reasonable expectation for how long it would take to convert the investment to cash (or sell or dispose of the investment) without significantly changing its market value.
Liquidity classification determinations take into account a variety of factors including various market, trading and investment-specific considerations, as well as market depth, and generally utilize analysis from a third-party liquidity metrics service.
The Liquidity Rule places a 15% limit on a fund's illiquid investments and requires funds that do not primarily hold assets that are highly liquid investments to determine and maintain a minimum percentage of the fund's net assets to be invested in highly liquid investments (highly liquid investment minimum or HLIM).  The Program includes provisions reasonably designed to comply with the 15% limit on illiquid investments and for determining, periodically reviewing and complying with the HLIM requirement as applicable.
At a recent meeting of the Fund's Board of Trustees, the LRM Committee provided a written report to the Board pertaining to the operation, adequacy, and effectiveness of the Program for the period December 1, 2022 through November 30, 2023.  The report concluded that the Program is operating effectively and is reasonably designed to assess and manage the Fund's liquidity risk.  
Proxy Voting Results
A special meeting of shareholders was held on October 18, 2023. The results of votes taken among shareholders on the proposal before them are reported below. Each vote reported represents one dollar of net asset value held on the record date for the meeting.
Proposal 1
To elect a Board of Trustees.
 
# of
Votes
% of
Votes
Abigail P. Johnson
Affirmative
378,729,502,260.01
97.58
Withheld
9,407,876,478.96
2.42
TOTAL
388,137,378,738.97
100.00
Jennifer Toolin McAuliffe
Affirmative
378,454,868,010.95
97.51
Withheld
9,682,510,728.02
2.49
TOTAL
388,137,378,738.97
100.00
Christine J. Thompson
Affirmative
378,837,121,274.52
97.60
Withheld
9,300,257,464.45
2.40
TOTAL
388,137,378,738.97
100.00
Elizabeth S. Acton
Affirmative
378,262,110,794.85
97.46
Withheld
9,875,267,944.12
2.54
TOTAL
388,137,378,738.97
100.00
Laura M. Bishop
Affirmative
380,482,113,171.06
98.03
Withheld
7,655,265,567.91
1.97
TOTAL
388,137,378,738.97
100.00
Ann E. Dunwoody
Affirmative
380,016,034,008.12
97.91
Withheld
8,121,344,730.85
2.09
TOTAL
388,137,378,738.97
100.00
John Engler
Affirmative
379,432,488,394.20
97.76
Withheld
8,704,890,344.77
2.24
TOTAL
388,137,378,738.97
100.00
Robert F. Gartland
Affirmative
378,741,819,600.60
97.58
Withheld
9,395,559,138.37
2.42
TOTAL
388,137,378,738.97
100.00
Robert W. Helm
Affirmative
380,389,324,755.07
98.00
Withheld
7,748,053,983.90
2.00
TOTAL
388,137,378,738.97
100.00
Arthur E. Johnson
Affirmative
378,427,694,151.67
97.50
Withheld
9,709,684,587.30
2.50
TOTAL
388,137,378,738.97
100.00
Michael E. Kenneally
Affirmative
377,842,228,145.18
97.35
Withheld
10,295,150,593.79
2.65
TOTAL
388,137,378,738.97
100.00
Mark A. Murray
Affirmative
380,158,432,703.37
97.94
Withheld
7,978,946,035.60
2.06
TOTAL
388,137,378,738.97
100.00
Carol J. Zierhoffer
Affirmative
380,522,113,360.24
98.04
Withheld
7,615,265,378.73
1.96
TOTAL
388,137,378,738.97
100.00
 
 
 
Proposal 1 reflects trust wide proposal and voting results.
 
 
 
1.9869414.108
SV5-ANN-0424

Item 2.

Code of Ethics


As of the end of the period, February 29, 2024, Fidelity Salem Street Trust (the trust) has adopted a code of ethics, as defined in Item 2 of Form N-CSR, that applies to its President and Treasurer and its Chief Financial Officer.  A copy of the code of ethics is filed as an exhibit to this Form N-CSR.


Item 3.

Audit Committee Financial Expert


The Board of Trustees of the trust has determined that Elizabeth S. Acton is an audit committee financial expert, as defined in Item 3 of Form N-CSR.  Ms. Acton is independent for purposes of Item 3 of Form N-CSR.  



Item 4.  

Principal Accountant Fees and Services


Fees and Services


The following table presents fees billed by Deloitte & Touche LLP, the member firms of Deloitte Touche Tohmatsu, and their respective affiliates (collectively, Deloitte Entities) in each of the last two fiscal years for services rendered to Fidelity SAI Long-Term Treasury Bond Index Fund and Fidelity SAI U.S. Treasury Bond Index Fund (the Funds):



Services Billed by Deloitte Entities


February 29, 2024 FeesA


Audit Fees

Audit-Related Fees

Tax Fees

All Other Fees

Fidelity SAI Long-Term Treasury Bond Index Fund

$44,500

$-

$11,000

$1,100

Fidelity SAI U.S. Treasury Bond Index Fund

$45,500

$-

$7,900

$1,100



February 28, 2023 FeesA


Audit Fees

Audit-Related Fees

Tax Fees

All Other Fees

Fidelity SAI Long-Term Treasury Bond Index Fund

$42,000

$-

$10,500

$1,000

Fidelity SAI U.S. Treasury Bond Index Fund

$45,300

$-

$7,900

$1,100



A Amounts may reflect rounding.


The following table presents fees billed by PricewaterhouseCoopers LLP (PwC) in each of the last two fiscal years for services rendered to Fidelity Intermediate Treasury Bond Index Fund, Fidelity Long-Term Treasury Bond Index Fund, Fidelity Series Long-Term Treasury Bond Index Fund, and Fidelity Short-Term Treasury Bond Index Fund (the Funds):





Services Billed by PwC


February 29, 2024 FeesA


Audit Fees

Audit-Related Fees

Tax Fees

All Other Fees

Fidelity Intermediate Treasury Bond Index Fund

$37,000

$3,400

$9,500

$1,400

Fidelity Long-Term Treasury Bond Index Fund

$36,900

$3,400

$9,500

$1,400

Fidelity Series Long-Term Treasury Bond Index Fund

$43,200

$3,800

$8,800

$1,600

Fidelity Short-Term Treasury Bond Index Fund

$36,900

$3,400

$9,500

$1,400



February 28, 2023 FeesA


Audit Fees

Audit-Related Fees

Tax Fees

All Other Fees

Fidelity Intermediate Treasury Bond Index Fund

$36,900

$3,200

$9,500

$1,400

Fidelity Long-Term Treasury Bond Index Fund

$36,900

$3,200

$9,500

$1,400

Fidelity Series Long-Term Treasury Bond Index Fund

$42,600

$3,500

$8,800

$1,500

Fidelity Short-Term Treasury Bond Index Fund

$36,900

$3,200

$9,500

$1,400



A Amounts may reflect rounding





The following table(s) present(s) fees billed by Deloitte Entities and PwC that were required to be approved by the Audit Committee for services that relate directly to the operations and financial reporting of the Fund(s) and that are rendered on behalf of Fidelity Management & Research Company LLC ("FMR") and entities controlling, controlled by, or under common control with FMR (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser) that provide ongoing services to the Fund(s) (Fund Service Providers):



Services Billed by Deloitte Entities




February 29, 2024A

February 28, 2023A

Audit-Related Fees

 $75,000

 $80,000

Tax Fees

$-

$-

All Other Fees

$935,000

$-


A Amounts may reflect rounding.



Services Billed by PwC




February 29, 2024A

February 28, 2023A

Audit-Related Fees

$9,422,800

$8,469,200

Tax Fees

$61,000

$1,000

All Other Fees

 $-

 $-


A Amounts may reflect rounding.






Audit-Related Fees represent fees billed for assurance and related services that are reasonably related to the performance of the fund audit or the review of the fund's financial statements and that are not reported under Audit Fees.


Tax Fees represent fees billed for tax compliance, tax advice or tax planning that relate directly to the operations and financial reporting of the fund.


All Other Fees represent fees billed for services provided to the fund or Fund Service Provider, a significant portion of which are assurance related, that relate directly to the operations and financial reporting of the fund, excluding those services that are reported under Audit Fees, Audit-Related Fees or Tax Fees.  


Assurance services must be performed by an independent public accountant.


* * *


The aggregate non-audit fees billed by Deloitte Entities and PwC for services rendered to the Fund(s), FMR (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any Fund Service Provider for each of the last two fiscal years of the Fund(s) are as follows:




Billed By

February 29, 2024A

February 28, 2023A

Deloitte Entities

$6,320,600

$803,500

PwC

$15,085,600

$14,220,100


A Amounts may reflect rounding.




The trust's Audit Committee has considered non-audit services that were not pre-approved that were provided by Deloitte Entities and PwC to Fund Service Providers to be compatible with maintaining the independence of Deloitte Entities and PwC in its(their) audit of the Fund(s), taking into account representations from Deloitte Entities and PwC, in accordance with Public Company Accounting Oversight Board rules, regarding its independence from the Fund(s) and its(their) related entities and FMRs review of the appropriateness and permissibility under applicable law of such non-audit services prior to their provision to the Fund(s) Service Providers.


Audit Committee Pre-Approval Policies and Procedures

 

The trusts Audit Committee must pre-approve all audit and non-audit services provided by a funds independent registered public accounting firm relating to the operations or financial reporting of the fund. Prior to the commencement of any audit or non-audit



services to a fund, the Audit Committee reviews the services to determine whether they are appropriate and permissible under applicable law.


The Audit Committee has adopted policies and procedures to, among other purposes, provide a framework for the Committees consideration of non-audit services by the audit firms that audit the Fidelity funds. The policies and procedures require that any non-audit service provided by a fund audit firm to a Fidelity fund and any non-audit service provided by a fund auditor to a Fund Service Provider that relates directly to the operations and financial reporting of a Fidelity fund (Covered Service) are subject to approval by the Audit Committee before such service is provided.


All Covered Services must be approved in advance of provision of the service either: (i) by formal resolution of the Audit Committee, or (ii) by oral or written approval of the service by the Chair of the Audit Committee (or if the Chair is unavailable, such other member of the Audit Committee as may be designated by the Chair to act in the Chairs absence). The approval contemplated by (ii) above is permitted where the Treasurer determines that action on such an engagement is necessary before the next meeting of the Audit Committee.


Non-audit services provided by a fund audit firm to a Fund Service Provider that do not relate directly to the operations and financial reporting of a Fidelity fund are reported to the Audit Committee periodically.


Non-Audit Services Approved Pursuant to Rule 2-01(c)(7)(i)(C) and (ii) of Regulation S-X (De Minimis Exception)


There were no non-audit services approved or required to be approved by the Audit Committee pursuant to the De Minimis Exception during the Funds(s) last two fiscal years relating to services provided to (i) the Fund(s) or (ii) any Fund Service Provider that relate directly to the operations and financial reporting of the Fund(s).

The Registrant has not retained, for the preparation of the audit report on the financial statements included in the Form N-CSR, a registered public accounting firm that has a branch or office that is located in a foreign jurisdiction and that the Public Company Accounting Oversight Board (the PCAOB) has determined that the PCAOB is unable to inspect or investigate completely because of a position taken by an authority in the foreign jurisdiction.

The Registrant is not a foreign issuer, as defined in 17 CFR 240.3b-4.


Item 5.

Audit Committee of Listed Registrants


Not applicable.


Item 6.  

Investments




(a)

Not applicable.


(b)

Not applicable.


Item 7.

Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies


Not applicable.


Item 8.

Portfolio Managers of Closed-End Management Investment Companies


Not applicable.


Item 9.  

Purchase of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers


Not applicable.


Item 10.

Submission of Matters to a Vote of Security Holders


There were no material changes to the procedures by which shareholders may recommend nominees to the trusts Board of Trustees.


Item 11.

Controls and Procedures


(a)(i)  The President and Treasurer and the Chief Financial Officer have concluded that the trusts disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act) provide reasonable assurances that material information relating to the trust is made known to them by the appropriate persons, based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of this report.


(a)(ii)  There was no change in the trusts internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act) that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the trusts internal control over financial reporting.


Item 12.

Disclosure of Securities Lending Activities for Closed-End Management

Investment Companies


Not applicable.


Item 18.  

Recovery of Erroneously Awarded Compensation


(a)

Not applicable.


(b)

Not applicable.


Item 19.

Exhibits


(a)

(1)

Code of Ethics pursuant to Item 2 of Form N-CSR is filed and attached hereto as EX-99.CODE ETH.

(a)

(2)

Certification pursuant to Rule 30a-2(a) under the Investment Company Act of 1940 (17 CFR 270.30a-2(a)) is filed and attached hereto as Exhibit 99.CERT.

(a)

(3)

Not applicable.

(b)


Certification pursuant to Rule 30a-2(b) under the Investment Company Act of 1940 (17 CFR 270.30a-2(b)) is furnished and attached hereto as Exhibit 99.906CERT.




SIGNATURES


Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


Fidelity Salem Street Trust



By:

/s/Laura M. Del Prato


Laura M. Del Prato


President and Treasurer (Principal Executive Officer)



Date:

April 22, 2024


Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.



By:

/s/Laura M. Del Prato


Laura M. Del Prato


President and Treasurer (Principal Executive Officer)



Date:

April 22, 2024



By:

/s/John J. Burke III


John J. Burke III


Chief Financial Officer (Principal Financial Officer)



Date:

April 22, 2024

 







Dates Referenced Herein   and   Documents Incorporated by Reference

This ‘N-CSR’ Filing    Date    Other Filings
6/30/26
6/30/25
9/30/24
6/30/24
Filed on / Effective on:4/22/24N-CSRS
4/15/24
4/12/24N-CEN
4/11/24
4/10/2440-17G
3/1/24485BPOS,  497,  497K
For Period end:2/29/24497K,  N-CSRS,  N-MFP2
2/28/24
11/30/2324F-2NT,  497J,  N-CEN,  N-CSR,  N-MFP2,  NPORT-P
10/18/23DEF 14A
9/1/23
2/28/2324F-2NT,  497K,  N-CEN,  N-CSR,  N-CSRS,  N-MFP2,  NPORT-P
12/1/2240-17G
10/4/17497J
7/7/16
3/1/16497J
10/8/15
2/28/1424F-2NT,  497K,  N-CSR,  N-CSRS,  N-MFP,  N-Q,  NSAR-A,  NSAR-B
 List all Filings 
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