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Limelight Networks, Inc. – IPO: ‘S-1’ on 3/22/07

On:  Thursday, 3/22/07, at 4:57pm ET   ·   Accession #:  950153-7-612   ·   File #:  333-141516

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

 3/22/07  Limelight Networks, Inc.          S-1                   14:2.7M                                   Bowne - BPX/FA

Initial Public Offering (IPO):  Registration Statement (General Form)   —   Form S-1
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: S-1         Limelight Networks, Inc. Form S-1                   HTML   1.38M 
 2: EX-3.1      Articles of Incorporation/Organization or By-Laws     26     98K 
 3: EX-3.2      Articles of Incorporation/Organization or By-Laws      5     19K 
 4: EX-3.3      Articles of Incorporation/Organization or By-Laws     23    116K 
 5: EX-3.4      Articles of Incorporation/Organization or By-Laws     24    111K 
 6: EX-4.2      Instrument Defining the Rights of Security Holders    36    143K 
 7: EX-10.1     Material Contract                                     11     55K 
 8: EX-10.2     Material Contract                                     32    126K 
 9: EX-10.6     Material Contract                                     25    132K 
10: EX-10.7     Material Contract                                     20    108K 
11: EX-10.8     Material Contract                                     32    168K 
12: EX-10.9     Material Contract                                     64    268K 
13: EX-21.1     Subsidiaries                                        HTML      7K 
14: EX-23.1     Consent of Experts or Counsel                          1      6K 


S-1   —   Limelight Networks, Inc. Form S-1
Document Table of Contents

Page (sequential)   (alphabetic) Top
 
11st Page  –  Filing Submission
"Prospectus Summary
"Risk Factors
"Special Note Regarding Forward-Looking Statements
"Use of Proceeds
"Dividend Policy
"Capitalization
"Dilution
"Selected Consolidated Financial Data
"Management's Discussion and Analysis of Financial Condition and Results of Operations
"Business
"Management
"Certain Relationships and Related Transactions
"Principal and Selling Stockholders
"Description of Capital Stock
"Shares Eligible for Future Sale
"Underwriting
"Legal Matters
"Experts
"Where You Can Find Additional Information
"Table of Contents

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Table of Contents

 C: 
As filed with the Securities and Exchange Commission on March 22, 2007
Registration No. 333-      
 
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
 
 
 
FORM S-1
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
 
 
 
 
LIMELIGHT NETWORKS, INC.
(Exact name of Registrant as specified in its charter)
 
 C: 
         
Delaware
  7389   20-1677033
(State or other jurisdiction of
incorporation or organization)
  (Primary Standard Industrial
Classification Code Number)
  (I.R.S. Employer
Identification Number)
 
 
 
 
2220 W. 14th Street
Tempe, AZ 85281
(602) 850-5000
(Address, including zip code, and telephone number, including area code, of Registrant’s principal executive offices)
 
 
 
 
Jeffrey W. Lunsford
Chairman and Chief Executive Officer
Limelight Networks, Inc.
2220 W. 14th Street
Tempe, AZ 85281
(602) 850-5000
(Name, address, including zip code, and telephone number, including area code, of agent for service)
 
 
 
 
Copies to:
         
Mark L. Reinstra, Esq.
Mario M. Rosati, Esq.
Alexander D. Phillips, Esq.
Wilson Sonsini Goodrich & Rosati, P.C.
650 Page Mill Road
Palo Alto, CA 94304-1050
(650) 493-9300
  David Van Engelhoven, Esq.
General Counsel
Limelight Networks, Inc.
2220 W. 14th Street
Tempe, AZ 85281
(602) 850-5000
  Kevin P. Kennedy, Esq.
Simpson Thacher & Bartlett LLP
2550 Hanover Street
Palo Alto, CA 94304
(650) 251-5000
 
 
Approximate date of commencement of proposed sale to the public: As soon as practicable after the effective date of this Registration Statement.
 
If any of the securities being registered on this Form are being offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, as amended (the “Securities Act”), check the following box. o
 
If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration number of the earlier effective registration statement for the same offering. o
 
If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration number of the earlier effective registration statement for the same offering. o
 
If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o
 
If delivery of the prospectus is expected to be made pursuant to Rule 434, check the following box. o
 
 
 
 
CALCULATION OF REGISTRATION FEE
 
                     
      Proposed Maximum
    Amount of
Title of Each Class of
    Aggregate
    Registration
Securities to be Registered     Offering Price(1)     Fee
Common stock, par value $0.001 per share
    $ 201,250,000       $ 6,179  
                     
(1) Estimated solely for the purpose of computing the amount of the registration fee, in accordance with Rule 457(o) promulgated under the Securities Act of 1933.
 
 
 
 
The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act or until the Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.
 

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The information in this prospectus is not complete and may be changed. These securities may not be sold until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities nor does it seek an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.
 
Subject to Completion, Dated March 22, 2007
 
          Shares
 
(LIMELIGHT LOGO)
Common Stock
 
 
 
 
This is an initial public offering of shares of common stock of Limelight Networks, Inc.
 
Limelight Networks is offering           of the shares to be sold in the offering. The selling stockholders identified in this prospectus are offering an additional           shares. Limelight Networks will not receive any of the proceeds from the sale of the shares being sold by the selling stockholders.
 
Prior to this offering, there has been no public market for the common stock. It is currently estimated that the initial public offering price will be between $      and $      per share. Application has been made for listing on the Nasdaq Global Market under the symbol “LLNW.”
 
See “Risk Factors” on page 8 to read about factors you should consider before buying shares of the common stock.
 
 
 
 
Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.
 
 
 
 
                 
   
Per Share
   
Total
 
 
Initial public offering price
  $                $        
Underwriting discount
               
Proceeds, before expenses, to Limelight Networks
               
Proceeds, before expenses, to the selling stockholders
               
 
To the extent that the underwriters sell more than           shares of common stock, the underwriters have the option to purchase up to an additional           shares from Limelight Networks at the initial public offering price less the underwriting discount.
 
The underwriters expect to deliver the shares against payment in New York, New York on          , 2007.
 
Goldman, Sachs & Co. Morgan Stanley

Jefferies & Company
Piper Jaffray

Friedman Billings Ramsey
 
 
 
 
Prospectus dated          , 2007



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 C: 
 
PROSPECTUS SUMMARY
 
This summary highlights information contained elsewhere in this prospectus. Before deciding whether to buy shares of our common stock, you should read this summary and the more detailed information in this prospectus, including our financial statements and related notes and especially the discussion of the risks of investing in our common stock under the heading, “Risk Factors.”
 
Limelight Networks, Inc.
 
Limelight Networks is a leading provider of high-performance content delivery network services. We digitally deliver content for traditional and emerging media companies, or content providers, including businesses operating in the television, music, radio, newspaper, magazine, movie, videogame and software industries. Using Limelight’s content delivery network, or CDN, content providers are able to provide their end-users with a high-quality media experience for rich media content, including video, music, games, software and social media.
 
As consumer demand for media content over the Internet has increased, and as enabling technologies such as broadband access to the Internet have proliferated, consumption of rich media content has become increasingly important to Internet end-users and therefore to the content providers that serve them. eMarketer estimates that at the end of 2006, nearly 60% of all Internet users regularly watched videos online, and approximately 80% are expected to do so by the end of 2010. We developed our services and architected our network specifically to meet the unique demands content providers face in delivering rich media content to large audiences of demanding Internet end-users. Our comprehensive solution delivers content providers a high-quality, highly scalable, highly reliable offering at a low cost. As of February 2007, over 700 customers have chosen Limelight Networks to deliver the high-quality media experiences their consumers seek online.
 
Content providers seeking to deliver rich media content to end-users via the Internet have two primary alternatives: deliver content using basic Internet connectivity or utilize a CDN. The basic Internet, which is a complex network of networks, is effective for delivering many types of content but can be ineffective for delivering rich media content with satisfactory performance. Internet protocols are designed to reliably transport data packets, but the packets can be lost or delayed in transit. When data packets are lost or delayed during the delivery of rich media content, the result is noticeable to users because playback is interrupted. This interruption causes songs to skip, videos to freeze and downloads to be slower than acceptable for demanding consumers. This lack of performance and its dramatic effect on user experience make the delivery of rich media content via the basic Internet extremely challenging.
 
In response to this challenge, some content providers have chosen to invest significant capital to build the infrastructure of servers, storage and networks necessary to bypass, as much as possible, the public Internet. The substantial capital outlay and the development of the expertise and other technical resources required to manage such a complex infrastructure can be time-consuming and prohibitively expensive for all but the largest companies. As a result, many companies have chosen to rely on one or more CDNs for the delivery of their content. Most early CDNs were built and configured to deliver the objects typically found in basic web sites such as photos or graphics, but were not configured for the large files and large content libraries associated with today’s rich media.
 
Benefits of our Solution to Customers
 
We have designed our CDN solution specifically to handle the demanding requirements of delivering rich media content over the Internet. Our solution enables content providers to provide their end-users with high-quality experiences across any digital media type, content library size or audience
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scale without expending the capital and developing the expertise needed to build and manage their own networks. Our CDN solution delivers the following benefits to our customers:
 
High Quality User Experience
 
We enable users to receive their requested content such as movies, television shows, games, songs and software downloads in a timely manner and to enjoy a high-quality media experience. We accomplish this, in part, by delivering content from servers that can be closer to users than a content provider’s own servers, and by delivering more than half of our content volume directly to a user’s access network, bypassing much of the congestion typically experienced in the public Internet. We also operate a dedicated high-speed (10 gigabits per second) backbone that enables us to move content quickly between locations on our network.
 
High Scalability Across Media Type, Library Size, and Audience Size
 
Our current global delivery capability exceeds 1 terabit per second. This capacity allows us to support traffic spikes associated with special one-time or unexpected events. Our highly scalable infrastructure also enables us to maintain our performance levels as our customers’ audiences grow, media file sizes increase and content libraries expand.
 
High Reliability
 
Our distributed CDN architecture, managed by our proprietary software, seamlessly and automatically responds in real time to network and data center outages. Each of our content delivery network locations connects to multiple Internet backbone and broadband Internet service provider networks, and has multiple redundant servers, enabling us to continue serving content even if a particular network connection or server fails.
 
Comprehensive Solution
 
We can begin delivery services for a new customer within days of a customer’s placement of an order. We also support both download and streaming delivery in a broad variety of formats, including Adobe Flash, MP3 audio, QuickTime, RealNetworks RealPlayer and Windows Media. In addition, our value-added services include a web-based customer portal that provides management information reports and a download manager that simplifies the downloading process for the end-user. Lastly, we offer custom services to address customers’ non-standard delivery needs.
 
Low Content Delivery Costs
 
Our content delivery services enable customers to avoid the substantial upfront and ongoing capital requirements of upgrading and maintaining their data centers and networks in order to deliver media content themselves. Customers benefit from the lower cost associated with the delivery of content using our infrastructure, which is designed specifically for delivering rich media content, and the expertise we have acquired from serving over 700 customers.
 
Our Strategy
 
Our strategic goal is to be the provider of choice in the delivery of rich media content. Key elements of our strategy include:
 
  •  Continuing to focus on customers with rich media content, a market which we believe represents a stable and growing business opportunity;
 
  •  Expanding content delivery network infrastructure to address significant growth opportunities and increase our market penetration in key international markets, including Europe and the Asia Pacific region;


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  •  Continuing to innovate in order to enhance our content delivery capabilities;
 
  •  Expanding content delivery network capacity to further advantages associated with the scale of our network;
 
  •  Enhancing our sales and distribution channels to broaden our customer relationships and deepen our penetration of existing customer accounts; and
 
  •  Expanding our partner relationships to further complement our service offerings.
 
Risks Affecting Us
 
There are numerous risks and uncertainties that may affect our financial and operating performance and our growth. You should carefully consider all of the risks discussed in “Risk Factors,” which begins on page 8, before investing in our common stock. These risks include the following:
 
  •  the limited operating history in our market, which makes evaluating our business and future prospects difficult;
 
  •  the possibility that we might not manage our future growth effectively;
 
  •  the consequences of a potential adverse resolution of the lawsuit Akamai Technologies, Inc. and the Massachusetts Institute of Technology have filed against us;
 
  •  the highly competitive nature of the CDN market, and the adverse consequences if we are unable to compete effectively; and
 
  •  the possibility that rapidly evolving technologies or new business models could cause demand for our CDN services to decline or could cause these services to become obsolete.
 
Corporate Information
 
We were formed as an Arizona limited liability company, Limelight Networks, LLC, in June 2001 and converted into a Delaware corporation, Limelight Networks, Inc., in August 2003. Our principal executive offices are located at 2220 W. 14th Street, Tempe, Arizona 85281, and our telephone number is (602) 850-5000. Our website address is www.limelightnetworks.com. The information on, or accessible through, our website is not part of this prospectus. References in this prospectus to “Limelight Networks,” “Limelight,” “we,” “us” and “our” refer to Limelight Networks, Inc. and its subsidiaries and predecessor entity.
 
Limelight Networks and the Limelight Networks logo are trademarks of Limelight Networks, Inc. All other trademarks, service marks and trade names appearing in this prospectus are the property of their respective owners.


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THE OFFERING
 
Common stock offered by Limelight Networks           shares
 
Common stock offered by the selling stockholders           shares
 
Common stock to be outstanding after this offering           shares
 
Use of proceeds We expect to use the net proceeds from this offering to fund capital expenditures for network and other equipment, as well as for working capital and other general corporate purposes. In addition, we intend to use approximately $23.8 million of the net proceeds to repay the outstanding balance under our credit facility. We also may use a portion of the net proceeds to acquire complementary businesses, products, services or technologies. We will not receive any proceeds from the sale of shares in this offering by the selling stockholders. See “Use of Proceeds.”
 
Proposed Nasdaq Global Market symbol LLNW
 
The number of shares of common stock to be outstanding after this offering is based on 44,514,964 shares outstanding as of December 31, 2006 and excludes:
 
  •  3,767,495 shares of common stock issuable upon exercise of options outstanding as of December 31, 2006 at a weighted average exercise price of $4.47 per share;
 
  •  65,390 shares of common stock issuable upon exercise of a warrant outstanding as of December 31, 2006 at an exercise price of $0.22 per share;
 
  •  602,836 shares of common stock reserved for future issuance under our Amended and Restated 2003 Incentive Compensation Plan as of December 31, 2006, plus an additional 950,000 shares that we reserved for issuance under this plan in March 2007; and
 
  •             shares of common stock reserved for future issuance under our 2007 Equity Incentive Plan adopted in          , subject to future adjustment as more fully described in “Management — Employee Benefit Plans.”
 
Unless otherwise noted, all information in this prospectus assumes:
 
  •  no exercise by the underwriters of their option to purchase up to an additional           shares of our common stock to cover over-allotments;
 
  •  the conversion of each outstanding share of preferred stock into one share of common stock upon the closing of this offering; and
 
  •  the filing of our amended and restated certificate of incorporation prior to closing of this offering.


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Summary Financial Data
 
The following tables provide our summary consolidated financial data. The summary consolidated statement of operations data for each of the three years in the period ended December 31, 2006 and the actual summary consolidated balance sheet data as of December 31, 2006 have been derived from our audited consolidated financial statements included elsewhere in this prospectus. You should read this information together with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our consolidated financial statements and related notes included elsewhere in this prospectus. Our historical results are not necessarily indicative of the results to be expected in any future period.
 
                         
    Year Ended December 31,  
       
2005
   
2006
 
    (in thousands,
 
    except per share data)  
 
Consolidated Statement of Operations Data:
                       
Revenue
  $ 11,192     $ 21,303     $ 64,343  
Cost of revenue:
                       
Cost of services(1)
    4,834       9,037       25,662  
Depreciation — network
    775       2,851       10,316  
                         
Total cost of revenue
    5,609       11,888       35,978  
                         
Gross profit
    5,583       9,415       28,365  
Operating expenses:
                       
General and administrative(1)
    2,147       4,107       18,274  
Sales and marketing(1)
    2,078       3,078       6,841  
Research and development(1)
    231       462       3,151  
Depreciation and amortization
    69       100       226  
                         
Total operating expenses
    4,525       7,747       28,492  
                         
Operating income (loss)
    1,058       1,668       (127 )
Other income (expense):
                       
Interest expense
    (189 )     (955 )     (1,782 )
Interest income
    1             208  
Other income (expense)
    (48 )     (16 )     175  
                         
Total other income (expense)
    (236 )     (971 )     (1,399 )
                         
Income (loss) before income taxes
    822       697       (1,526 )
Income tax expense(2)
    306       300       2,187  
                         
Net income (loss)
  $ 516     $ 397     $ (3,713 )
                         
Net income (loss) allocable to common stockholders
  $ 317     $ 185     $ (3,713 )
                         
Net income (loss) per common share:
                       
Net income (loss) per common share — basic
  $ 0.01     $ 0.01     $ (0.22 )
                         
Net income (loss) per common share — diluted
  $ 0.01     $ 0.01     $ (0.22 )
                         
Weighted average shares used in calculating net income (loss) per common share — basic
    23,125       23,158       17,061  
Weighted average shares used in calculating net income (loss) per common share — diluted
    25,971       27,375       17,061  
                         
Other Operating Data:
                       
Active customers at period end(3)
    268       392       693  
Annual revenue per customer
(in thousands)(4)
  $ 42     $ 54     $ 93  
Adjusted EBITDA (in thousands)(5)
  $ 1,869     $ 4,697     $ 21,284  
 


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(1) Includes stock-based compensation as follows:
                         
    Year Ended December 31,  
    2004     2005     2006  
    (in thousands)  
 
Cost of services
  $     $     $ 459  
General and administrative
    14       94       6,686  
Sales and marketing
                329  
Research and development
                1,660  
                         
Total
  $ 14     $ 94     $ 9,134  
                         
 
(2) In 2006, approximately $7.6 million in stock-based compensation expense was not deductible for tax purposes by us, which resulted in the incurrence of income tax expense despite our having generated a loss before income taxes in this period.
 
(3) We define active customers as those that generated revenue for us within 30 days of the period end.
 
(4) Annual revenue per customer equals revenue for the year divided by the number of active customers with respect to each period.
 
(5) We calculate Adjusted EBITDA as follows:
 
                         
    Year Ended December 31,  
    2004     2005     2006  
    (in thousands)  
 
Net income
  $ 516     $ 397     $ (3,713 )
Plus: depreciation and amortization
    844       2,951       10,542  
Plus: interest expense
    189       955       1,782  
Less: interest income
    (1 )           (208 )
Plus: income tax expense
    306       300       2,187  
                         
EBITDA
  $ 1,854     $ 4,603     $ 10,590  
Plus: stock-based compensation
    14       94       9,134  
Plus: litigation expenses recoverable from escrow
                1,560  
                         
Adjusted EBITDA
  $ 1,868     $ 4,697     $ 21,284  

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Our consolidated balance sheet data as of December 31, 2006 is presented:
 
  •  on an actual basis;
 
  •  on a pro forma basis to give effect to the conversion of all outstanding shares of preferred stock into shares of common stock; and
 
  •  on a pro forma as adjusted basis to give effect to our receipt of net proceeds from our sale of           shares of common stock at an assumed initial public offering price of $      per share, the mid-point of the range on the cover of this prospectus, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us.
 
                         
    As of December 31, 2006  
                Pro Forma
 
    Actual     Pro Forma     As Adjusted(1)  
    (in thousands)  
 
Consolidated Balance Sheet Data:
                       
Cash and cash equivalents
  $ 7,611     $ 7,611     $ 121,461  
Working capital
    14,033       14,033       127,883  
Property and equipment, net
    41,784       41,784       41,784  
Total assets
    73,928       73,928       187,778  
Long-term debt, less current portion
    20,415       20,415       20,415  
Convertible preferred stock
    30              
Total stockholders’ equity
    36,589       36,589       150,439  
 
(1) Each $1.00 increase or decrease in the assumed initial public offering price of $      per share would increase or decrease, as applicable, our cash and cash equivalents, working capital, total assets and total stockholders’ equity by approximately $      million, assuming the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting the estimated underwriting discounts and commissions payable by us.


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RISK FACTORS
 
Investing in our common stock involves a high degree of risk. You should carefully consider the risks described below as well as the other information contained in this prospectus, including our consolidated financial statements and the related notes, before deciding to purchase any shares of our common stock. The occurrence of any of the following risks could harm our business, prospects, financial condition or operating results. In that case, the trading price of our common stock could decline and you may lose part or all of your investment.
 
Risks Related to Our Business
 
Our limited operating history makes evaluating our business and future prospects difficult, and may increase the risk of your investment.
 
Our company has only been in existence since 2001. A significant amount of our growth, in terms of employees, operations and revenue, has occurred since 2004. For example, our revenue has grown from $5.0 million in 2003 to $64.3 million in 2006. As a consequence, we have a limited operating history which makes it difficult to evaluate our business and our future prospects. We have encountered and will continue to encounter risks and difficulties frequently experienced by growing companies in rapidly changing industries, such as the risks described in this prospectus. If we do not address these risks successfully, our business will be harmed.
 
If we fail to manage future growth effectively, we may not be able to market and sell our services successfully.
 
We have recently expanded our operations significantly, increasing our total number of employees from 29 at December 31, 2004 to 158 at March 1, 2007, and we anticipate that further significant expansion will be required. Our future operating results depend to a large extent on our ability to manage this expansion and growth successfully. Risks that we face in undertaking this expansion include: training new sales personnel to become productive and generate revenue; forecasting revenue; controlling expenses and investments in anticipation of expanded operations; implementing and enhancing our CDN and administrative infrastructure, systems and processes; addressing new markets; and expanding international operations. A failure to manage our growth effectively could materially and adversely affect our ability to market and sell our products and services.
 
A lawsuit has been filed against us and an adverse resolution of this lawsuit could cause us to incur substantial costs and liability or force us to cease providing our CDN services altogether.
 
In June 2006, Akamai Technologies, Inc., or Akamai, and the Massachusetts Institute of Technology, or MIT, filed a lawsuit against us in the U.S. District Court for the District of Massachusetts alleging that we are infringing two patents assigned to MIT and exclusively licensed by MIT to Akamai. In September 2006, Akamai and MIT expanded their claims to assert infringement of a third, recently issued patent. These two matters have been consolidated by the Court. In addition to monetary relief, including treble damages, interest, fees and costs, the consolidated complaint seeks an order permanently enjoining us from conducting our business in a manner that infringes the relevant patents. A permanent injunction could prevent us from operating our CDN altogether. The Court has scheduled a claims construction hearing, known as a Markman hearing, for May 2007. Although the Court has not set a trial date, based on the schedule currently in place, we believe it is likely that the case will go to trial in 2008.
 
Akamai and MIT have asserted two of the patents at issue in the current litigation in two previous lawsuits against different defendants. Both cases were filed in the same district court as the current action, and assigned to the same judge currently presiding over the lawsuit filed against us. In one


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case, a portion of one of these patents was upheld but neither lawsuit resulted in the defendant being able to obtain a license from Akamai or MIT, nor did the lawsuits result in a settlement. In addition, Akamai acquired the defendant prior to final resolution of the lawsuit in one of these cases.
 
While we believe that the claims of infringement asserted against us by Akamai and MIT in the present litigation are without merit and intend to vigorously defend the action, we cannot assure you that this lawsuit ultimately will be resolved in our favor. An adverse ruling could seriously impact our ability to conduct our business and to offer our products and services to our customers. This, in turn, would harm our revenue, market share, reputation, liquidity and overall financial position. Whether or not we prevail in our litigation, we expect that the litigation will continue to be expensive, time-consuming and a distraction to our management in operating our business.
 
We currently face competition from established competitors and may face competition from others in the future.
 
We compete in markets that are intensely competitive, rapidly changing and characterized by vendors offering a wide range of content delivery solutions. We have experienced and expect to continue to experience increased competition. Many of our current competitors, as well as a number of our potential competitors, have longer operating histories, greater name recognition, broader customer relationships and industry alliances and substantially greater financial, technical and marketing resources than we do. Our primary competitors include content delivery service providers such as Akamai, Level 3 Communications (which recently acquired Digital Island, SAVVIS Communications’ content delivery network services business) and Internap Network Services Corporation (which recently acquired VitalStream). Also, as a result of the growth of the content delivery market, a number of companies are currently attempting to enter our market, either directly or indirectly, some of which may become significant competitors in the future. Our competitors may be able to respond more quickly than we can to new or emerging technologies and changes in customer requirements. Some of our current or potential competitors may bundle their offerings with other services, software or hardware in a manner that may discourage content providers from purchasing the services that we offer. In addition, as we expand internationally, we face different market characteristics and competition with local content delivery service providers, many of which are very well positioned within their local markets. Increased competition could result in price reductions and revenue shortfalls, loss of customers, and loss of market share, which could harm our business, financial condition and results of operations.
 
We may lose customers if they elect to develop content delivery solutions internally.
 
Our customers and potential customers may decide to develop their own content delivery solutions rather than outsource these solutions to content delivery network, or CDN, services providers like us. This is particularly true as our customers increase their operations and begin expending greater resources on delivering their content using third-party solutions. For example, MusicMatch was our most significant customer in 2004 and one of our top 10 customers in 2005, but following its acquisition by Yahoo! Inc., MusicMatch’s content delivery requirements were in-sourced and it was not a customer of ours at all in 2006. If we fail to offer CDN services that are competitive to in-sourced solutions, we may lose additional customers or fail to attract customers that may consider pursuing this in-sourced approach, and our business and financial results would suffer.
 
Rapidly evolving technologies or new business models could cause demand for our CDN services to decline or could cause these services to become obsolete.
 
Customers or third parties may develop technological or business model innovations that address content delivery requirements in a manner that is, or is perceived to be, equivalent or superior to our CDN services. If competitors introduce new products or services that compete with or surpass the quality or the price/performance of our services, we may be unable to renew our agreements with existing customers or attract new customers at the prices and levels that allow us to generate


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attractive rates of return on our investment. For example, one or more third parties might develop improvements to current peer-to-peer technology, which is a technology that relies upon the computing power and bandwidth of its participants, such that this technological approach is better able to deliver content in a way that is competitive to our CDN services, or even that makes CDN services obsolete. We may not anticipate such developments and may be unable to adequately compete with these potential solutions. In addition, our customers’ business models may change in ways that we do not anticipate and these changes could reduce or eliminate customers’ needs for CDN services. If this occurred, we could lose customers or potential customers, and our business and financial results would suffer. As a result of these or similar potential developments, in the future it is possible that competitive dynamics in our market may require us to reduce our prices, which could harm our revenue, gross margin and operating results.
 
If we are unable to sell our services at acceptable prices relative to our costs, our revenue and gross margins will decrease, and our business and financial results will suffer.
 
Prices for content delivery services have fallen in recent years and are likely to fall further in the future. Recently, we have invested significant amounts in purchasing capital equipment to increase the capacity of our content delivery services. For example, in 2006 we made $40.6 million in capital expenditures, primarily for computer equipment associated with the build-out and expansion of our content delivery network. Our investments in our infrastructure are based upon our assumptions regarding future demand and also prices that we will be able to charge for our services. These assumptions may prove to be wrong. If the price that we are able to charge customers to deliver their content falls to a greater extent than we anticipate, if we over-estimate future demand for our services or if our costs to deliver our services do not fall commensurate with any future price declines, we may not be able to achieve acceptable rates of return on our infrastructure investments and our gross profit and results of operations may suffer dramatically.
 
In addition, in 2007 and beyond, we expect to increase our expenses, in absolute dollars, in substantially all areas of our business, including sales and marketing, general and administrative, and research and development. In 2007 and 2008, as we further expand our content delivery network, we also expect our capital expenditures to be generally consistent with the high level of expenditures we made in this area in 2006. As a consequence, we are dependent on significant future growth in demand for our services to provide the necessary gross profit to pay these additional expenses. If we fail to generate significant additional demand for our services, our results of operations will suffer and we may fail to achieve planned or expected financial results. There are numerous factors that could, alone or in combination with other factors, impede our ability to increase revenue, moderate expenses or maintain gross margins, including:
 
  •  failure to increase sales of our core services;
 
  •  significant increases in bandwidth and rack space costs or other operating expenses;
 
  •  inability to maintain our prices relative to our costs;
 
  •  failure of our current and planned services and software to operate as expected;
 
  •  loss of any significant customers or loss of existing customers at a rate greater than our increase in new customers or our sales to existing customers;
 
  •  failure to increase sales of our services to current customers as a result of their ability to reduce their monthly usage of our services to their minimum monthly contractual commitment;
 
  •  failure of a significant number of customers to pay our fees on a timely basis or at all or failure to continue to purchase our services in accordance with their contractual commitments; and
 
  •  inability to attract high-quality customers to purchase and implement our current and planned services.


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If we are unable to develop new services and enhancements to existing services or fail to predict and respond to emerging technological trends and customers’ changing needs, our operating results may suffer.
 
The market for our CDN services is characterized by rapidly changing technology, evolving industry standards and new product and service introductions. Our operating results depend on our ability to develop and introduce new services into existing and emerging markets. The process of developing new technologies is complex and uncertain. We must commit significant resources to developing new services or enhancements to our existing services before knowing whether our investments will result in services the market will accept. For example, we recently introduced our Traffic Services Manager and Geo-Compliance paid service options, and we do not yet know whether our customers will adopt these offerings in sufficient numbers to justify our development costs. Furthermore, we may not execute successfully our technology initiatives because of errors in planning or timing, technical hurdles that we fail to overcome in a timely fashion, misunderstandings about market demand or a lack of appropriate resources. Failures in execution or market acceptance of new services we introduce could result in competitors providing those solutions before we do, which could lead to loss of market share, revenue and earnings.
 
We depend on a limited number of customers for a substantial portion of our revenue in any fiscal period, and the loss of, or a significant shortfall in demand from, these customers could significantly harm our results of operations.
 
During any given fiscal period, a relatively small number of customers typically accounts for a significant percentage of our revenue. For example, in 2006, revenue generated by sales to our top 10 customers, in terms of revenue, accounted for approximately 58% of our total revenue for the same period. One of these top 10 customers, CDN Consulting, which acted as a reseller of our services primarily to a single large content provider, represented in excess of 21% of our total revenue for that period. Prospectively, we do not expect sales to this reseller to continue at comparable levels. In the past, the customers that comprised our top 10 customers have continually changed, and we also have experienced significant fluctuations in our individual customers’ usage of our services. For example, one of our top 10 customers in 2005 was no longer a customer at all in 2006. In addition, our operating costs are relatively fixed in the near term. As a consequence, we may not be able to adjust our expenses in the short term to address the unanticipated loss of a large customer during any particular period. As such, we may experience significant, unanticipated fluctuations in our operating results which may cause us to not meet our expectations or those of stock market analysts, which could cause our stock price to decline.
 
If we are unable to attract new customers or to retain our existing customers, our revenue could be lower than expected and our operating results may suffer.
 
In addition to adding new customers, to increase our revenue, we must sell additional services to existing customers and encourage existing customers to increase their usage levels. If our existing and prospective customers do not perceive our services to be of sufficiently high value and quality, we may not be able to retain our current customers or attract new customers. We sell our services pursuant to service agreements that are generally one to three years in length. Our customers have no obligation to renew their contracts for our services after the expiration of their initial commitment period, and these service agreements may not be renewed at the same or higher level of service, if at all. Moreover, under some circumstances, some of our customers have the right to cancel their service agreements prior to the expiration of the terms of their agreements. Because of our limited operating history, we have limited historical data with respect to rates of customer service agreement renewals. This fact, in addition to the changing competitive landscape in our market, means that we cannot accurately predict future customer renewal rates. Our customers’ renewal rates may decline or fluctuate as a result of a number of factors, including:
 
  •  their satisfaction or dissatisfaction with our services;


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  •  the prices of our services;
 
  •  the prices of services offered by our competitors;
 
  •  mergers and acquisitions affecting our customer base; and
 
  •  reductions in our customers’ spending levels.
 
If our customers do not renew their service agreements with us or if they renew on less favorable terms, our revenue may decline and our business will suffer. Similarly, our customer agreements often provide for minimum commitments that are often significantly below our customers’ historical usage levels. Consequently, even if we have agreements with our customers to use our services, these customers could significantly curtail their usage without incurring any penalties under our agreements. In this event, our revenue would be lower than expected and our operating results could suffer.
 
It also is an important component of our growth strategy to market our CDN services to industries, such as enterprise and the government. As an organization, we do not have significant experience in selling our services into these markets. We have only recently begun a number of these initiatives, and our ability to successfully sell our services into these markets to a meaningful extent remains unproven. If we are unsuccessful in such efforts, our business, financial condition and results of operations could suffer.
 
Our results of operations may fluctuate in the future. As a result, we may fail to meet or exceed the expectations of securities analysts or investors, which could cause our stock price to decline.
 
Our results of operations may fluctuate as a result of a variety of factors, many of which are outside of our control. If our results of operations fall below the expectations of securities analysts or investors, the price of our common stock could decline substantially. Fluctuations in our results of operations may be due to a number of factors, including:
 
  •  our ability to increase sales to existing customers and attract new customers to our CDN services;
 
  •  the addition or loss of large customers, or significant variation in their use of our CDN services;
 
  •  costs associated with current or future intellectual property lawsuits;
 
  •  service outages or security breaches;
 
  •  the amount and timing of operating costs and capital expenditures related to the maintenance and expansion of our business, operations and infrastructure;
 
  •  the timing and success of new product and service introductions by us or our competitors;
 
  •  the occurrence of significant events in a particular period that result in an increase in the use of our CDN services, such as a major media event or a customer’s online release of a new or updated video game;
 
  •  changes in our pricing policies or those of our competitors;
 
  •  the timing of recognizing revenue;
 
  •  stock-based compensation expenses associated with attracting and retaining key personnel;
 
  •  limitations of the capacity of our content delivery network and related systems;
 
  •  the timing of costs related to the development or acquisition of technologies, services or businesses;
 
  •  general economic, industry and market conditions and those conditions specific to Internet usage and online businesses;


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  •  limitations on usage imposed by our customers in order to limit their online expenses; and
 
  •  geopolitical events such as war, threat of war or terrorist actions.
 
We believe that our revenue and results of operations may vary significantly in the future and that period-to-period comparisons of our operating results may not be meaningful. You should not rely on the results of one period as an indication of future performance.
 
We generate our revenue almost entirely from the sale of CDN services, and the failure of the market for these services to expand as we expect or the reduction in spending on those services by our current or potential customers would seriously harm our business.
 
While we offer our customers a number of services associated with our content delivery network, we generated nearly 100% of our revenue in 2006 from charging our customers for the content delivered on their behalf through our CDN. As we do not currently have other meaningful sources of revenue, we are subject to an elevated risk of reduced demand for these services. Furthermore, if the market for delivery of rich media content in particular does not continue to grow as we expect or grows more slowly, then we may fail to achieve a return on the significant investment we are making to prepare for this growth. Our success, therefore, depends on the continued and increasing reliance on the Internet for delivery of media content and our ability to cost-effectively deliver these services. Factors that may have a general tendency to limit or reduce the number of users relying on the Internet for media content or the number of providers making this content available online include a general decline in Internet usage, litigation involving our customers and third-party restrictions on online content, including copyright restrictions, digital rights management and restrictions in certain geographic regions, as well as a significant increase in the quality or fidelity of offline media content beyond that available online to the point where users prefer the offline experience. The influence of any of these factors may cause our current or potential customers to reduce their spending on CDN services, which would seriously harm our operating results and financial condition.
 
Many of our significant current and potential customers are pursuing emerging or unproven business models which, if unsuccessful, could lead to a substantial decline in demand for our CDN services.
 
Because the proliferation of broadband Internet connections and the subsequent monetization of content libraries for distribution to Internet users are relatively recent phenomena, many of our customers’ business models that center on the delivery of rich media and other content to users remain unproven. For example, social media companies have been among our top recent customers and are pursuing emerging strategies for monetizing the user content and traffic on their web sites. Our customers will not continue to purchase our CDN services if their investment in providing access to the media stored on or deliverable through our CDN does not generate a sufficient return on their investment. A reduction in spending on CDN services by our current or potential customers would seriously harm our operating results and financial condition.
 
We may need to defend our intellectual property and processes against patent or copyright infringement claims, which would cause us to incur substantial costs.
 
Companies, organizations or individuals, including our competitors, may hold or obtain patents or other proprietary rights that would prevent, limit or interfere with our ability to make, use or sell our services or develop new services, which could make it more difficult for us to operate our business. From time to time, we may receive inquiries from holders of patents inquiring whether we infringe their proprietary rights. Companies holding Internet-related patents or other intellectual property rights are increasingly bringing suits alleging infringement of such rights or otherwise asserting their rights and seeking licenses. For example, in June 2006, we were sued by Akamai and MIT alleging we infringed patents licensed to Akamai. Any litigation or claims, whether or not valid, could result in substantial


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costs and diversion of resources. In addition, if we are determined to have infringed upon a third party’s intellectual property rights, we may be required to do one or more of the following:
 
  •  cease selling, incorporating or using products or services that incorporate the challenged intellectual property;
 
  •  pay substantial damages;
 
  •  obtain a license from the holder of the infringed intellectual property right, which license may not be available on reasonable terms or at all; or
 
  •  redesign products or services.
 
If we are forced to take any of these actions, our business may be seriously harmed. In the event of a successful claim of infringement against us and our failure or inability to obtain a license to the infringed technology, our business and operating results could be harmed.
 
Our business will be adversely affected if we are unable to protect our intellectual property rights from unauthorized use or infringement by third parties.
 
We rely on a combination of patent, copyright, trademark and trade secret laws and restrictions on disclosure to protect our intellectual property rights. These legal protections afford only limited protection, and we have no currently issued patents. Monitoring infringement of our intellectual property rights is difficult, and we cannot be certain that the steps we have taken will prevent unauthorized use of our intellectual property rights. We have applied for patent protection in a number of foreign countries, but the laws in these jurisdictions may not protect our proprietary rights as fully as in the United States. Furthermore, we cannot be certain that any pending or future patent applications will be granted, that any future patent will not be challenged, invalidated or circumvented, or that rights granted under any patent that may be issued will provide competitive advantages to us.
 
Any unplanned interruption in the functioning of our network or services could lead to significant costs and disruptions that could reduce our revenue and harm our business, financial results and reputation.
 
Our business is dependent on providing our customers with fast, efficient and reliable distribution of application and content delivery services over the Internet. Many of our customers depend primarily or exclusively on our services to operate their businesses. Consequently, any disruption of our services could have a material impact on our customers’ businesses. Our network or services could be disrupted by numerous events, including natural disasters, failure or refusal of our third-party network providers to provide the necessary capacity, failure of our software or CDN delivery infrastructure and power losses. In addition, we deploy our servers in approximately 50 third-party co-location facilities, and these third-party co-location providers could experience system outages or other disruptions that could constrain our ability to deliver our services. We may also experience disruptions caused by software viruses or other attacks by unauthorized users. While we have not experienced any significant, unplanned disruption of our services to date, attacks by unauthorized users in the future may be successful, and our security measures may not be effective in preventing damages from such an attack. Despite our significant infrastructure investments, we may have insufficient communications and server capacity to address these or other disruptions, which could result in interruptions in our services.
 
Any widespread interruption of the functioning of our CDN and related services for any reason would reduce our revenue and could harm our business and financial results. If such a widespread interruption occurred or if we failed to deliver content to users as expected during a high-profile media event, game release or other well-publicized circumstance, our reputation could be damaged severely. Moreover, any disruptions could undermine confidence in our services and cause us to lose customers or make it more difficult to attract new ones, either of which could harm our business and results of operations.


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We may have difficulty scaling and adapting our existing architecture to accommodate increased traffic and technology advances or changing business requirements, which could lead to the loss of customers and cause us to incur unexpected expenses to make network improvements.
 
Our CDN services are highly complex and are designed to be deployed in and across numerous large and complex networks. Our network infrastructure has to perform well and be reliable for us to be successful. The greater the user traffic and the greater the complexity of our products and services, the more resources we will need to invest in additional infrastructure and support. We have spent and expect to continue to spend substantial amounts on the purchase and lease of equipment and data centers and the upgrade of our technology and network infrastructure to handle increased traffic over our network and to roll out new products and services. This expansion is expensive and complex and could result in inefficiencies, operational failures or defects in our network and related software. If we do not expand successfully, or if we experience inefficiencies and operational failures, the quality of our products and services and users’ experience could decline. From time to time, we have needed to correct errors and defects in our software or in other aspects of our CDN. In the future, there may be additional errors and defects that may harm our ability to deliver our services, including errors and defects originating with third party networks or software on which we rely. These occurrences could damage our reputation and lead us to lose current and potential customers. We must continuously upgrade our infrastructure in order to keep pace with our customers’ evolving demands. Cost increases or the failure to accommodate increased traffic or these evolving business demands without disruption could harm our operating results and financial condition.
 
Our operations are dependent in part upon communications capacity provided by third-party telecommunications providers. A material disruption of the communications capacity we have leased could harm our results of operations, reputation and customer relations.
 
We lease private line capacity for our backbone from a third party provider, Global Crossing Ltd. Our contracts for private line capacity with Global Crossing generally have terms of three years. The communications capacity we have leased may become unavailable for a variety of reasons, such as physical interruption, technical difficulties, contractual disputes, or the financial health of our third party provider. As it would be time consuming and expensive to identify and obtain alternative third-party connectivity, we are dependent on Global Crossing in the near term. Additionally, as we grow, we anticipate requiring greater private line capacity than we currently have in place. If we are unable to obtain such capacity on terms commercially acceptable to us or at all, our business and financial results would suffer. We may not be able to deploy on a timely basis enough network capacity to meet the needs of our customer base or effectively manage demand for our services.
 
Our business depends on continued and unimpeded access to third-party controlled end-user access networks.
 
Our content delivery services depend on our ability to access certain end-user access networks in order to complete the delivery of rich media and other online content to end-users. Some operators of these networks may take measures, such as the deployment of a variety of filters, that could degrade, disrupt or increase the cost of our or our customers’ access to certain of these end-user access networks by restricting or prohibiting the use of their networks to support or facilitate our services, or by charging increased fees to us, our customers or end-users in connection with our services. This or other types of interference could result in a loss of existing customers, increased costs and impairment of our ability to attract new customers, thereby harming our revenue and growth.
 
In addition, the performance of our infrastructure depends in part on the direct connection of our CDN to a large number of end-user access networks, known as peering, which we achieve through mutually beneficial cooperation with these networks. If in the future a significant percentage of these


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network operators elected to no longer peer with our CDN, the performance of our infrastructure could be diminished and our business could suffer.
 
If our ability to deliver media files in popular proprietary content formats was restricted or became cost-prohibitive, demand for our content delivery services could decline, we could lose customers and our financial results could suffer.
 
Our business depends on our ability to deliver media content in all major formats. If our legal right or technical ability to store and deliver content in one or more popular proprietary content formats, such as Adobe Flash or Windows Media, was limited, our ability to serve our customers in these formats would be impaired and the demand for our content delivery services would decline by customers using these formats. Owners of propriety content formats may be able to block, restrict or impose fees or other costs on our use of such formats, which could lead to additional expenses for us and for our customers, or which could prevent our delivery of this type of content altogether. Such interference could result in a loss of existing customers, increased costs and impairment of our ability to attract new customers, which would harm our revenue, operating results and growth.
 
If we are unable to retain our key employees and hire qualified sales and technical personnel, our ability to compete could be harmed.
 
Our future success depends upon the continued services of our executive officers and other key technology, sales, marketing and support personnel who have critical industry experience and relationships that they rely on in implementing our business plan. In particular, we are dependent on the services of our Chief Executive Officer, Jeffrey W. Lunsford and also our Chief Technical Officer, Nathan F. Raciborski. Neither of these officers nor any of our other key employees is bound by an employment agreement for any specific term. In addition, we do not have “key person” life insurance policies covering any of our officers or other key employees, and we therefore have no way of mitigating our financial loss were we to lose their services. There is increasing competition for talented individuals with the specialized knowledge to deliver content delivery services and this competition affects both our ability to retain key employees and hire new ones. The loss of the services of any of our key employees could disrupt our operations, delay the development and introduction of our services, and negatively impact our ability to sell our services.
 
Our senior management team has limited experience working together as a group, and may not be able to manage our business effectively.
 
Two members of our senior management team, our President and Chief Executive Officer, Jeffrey W. Lunsford, and our Chief Financial Officer, Matthew Hale, have been hired since November 2006. As a result, our senior management team has limited experience working together as a group. This lack of shared experience could harm our senior management team’s ability to quickly and efficiently respond to problems and effectively manage our business.
 
We face risks associated with international operations that could harm our business.
 
We have operations and personnel in Japan, the United Kingdom and Singapore, and we currently maintain network equipment in France, Germany, Hong Kong, Japan, the Netherlands and the United Kingdom. As part of our growth strategy, we intend to expand our sales and support organizations internationally, as well as to further expand our international network infrastructure. We have limited experience in providing our services internationally and such expansion could require us to make significant expenditures, including the hiring of local employees, in advance of generating any revenue. As a consequence, we may fail to achieve profitable operations that will compensate our investment in international locations. We are subject to a number of risks associated with international


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business activities that may increase our costs, lengthen our sales cycle and require significant management attention. These risks include:
 
  •  increased expenses associated with sales and marketing, deploying services and maintaining our infrastructure in foreign countries;
 
  •  competition from local content delivery service providers, many of which are very well positioned within their local markets;
 
  •  unexpected changes in regulatory requirements resulting in unanticipated costs and delays;
 
  •  interpretations of laws or regulations that would subject us to regulatory supervision or, in the alternative, require us to exit a country, which could have a negative impact on the quality of our services or our results of operations;
 
  •  longer accounts receivable payment cycles and difficulties in collecting accounts receivable;
 
  •  corporate and personal liability for violations of local laws and regulations;
 
  •  currency exchange rate fluctuations; and
 
  •  potentially adverse tax consequences.
 
Internet-related and other laws relating to taxation issues, privacy and consumer protection and liability for content distributed over our network, could harm our business.
 
Laws and regulations that apply to communications and commerce conducted over the Internet are becoming more prevalent, both in the United States and internationally, and may impose additional burdens on companies conducting business online or providing Internet-related services such as ours. Increased regulation could negatively affect our business directly, as well as the businesses of our customers, which could reduce their demand for our services. For example, tax authorities abroad may impose taxes on the Internet-related revenue we generate based on where our internationally deployed servers are located. In addition, domestic and international taxation laws are subject to change. Our services, or the businesses of our customers, may become subject to increased taxation, which could harm our financial results either directly or by forcing our customers to scale back their operations and use of our services in order to maintain their operations. In addition, the laws relating to the liability of private network operators for information carried on or disseminated through their networks are unsettled, both in the United States and abroad. Network operators have been sued in the past, sometimes successfully, based on the content of material disseminated through their networks. We may become subject to legal claims such as defamation, invasion of privacy and copyright infringement in connection with content stored on or distributed through our network. In addition, our reputation could suffer as a result of our perceived association with the type of content that some of our customers deliver. If we need to take costly measures to reduce our exposure to these risks, or are required to defend ourselves against such claims, our financial results could be negatively affected.
 
If we are required to seek additional funding, such funding may not be available on acceptable terms or at all.
 
We may need to obtain additional funding due to a number of factors beyond our control, including a shortfall in revenue, increased expenses, increase investment in capital equipment or the acquisition of significant businesses or technologies. We believe that our cash, plus cash from operations and the proceeds from this offering will be sufficient to fund our operations and proposed capital expenditures for at least the next 12 months. However, we may need funding before such time. If we do need to obtain funding, it may not be available on commercially reasonable terms or at all. If we are unable to obtain sufficient funding, our business would be harmed. Even if we were able to find outside funding sources, we might be required to issue securities in a transaction that could be highly dilutive to our investors or we may be required to issue securities with greater rights than the


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securities we have outstanding today. We might also be required to take other actions that could lessen the value of our common stock, including borrowing money on terms that are not favorable to us. If we are unable to generate or raise capital that is sufficient to fund our operations, we may be required to curtail operations, reduce our capabilities or cease operations in certain jurisdictions or completely.
 
Our business requires the continued development of effective business support systems to support our customer growth and related services.
 
The growth of our business depends on our ability to continue to develop effective business support systems. This is a complicated undertaking requiring significant resources and expertise. Business support systems are needed for:
 
  •  implementing customer orders for services;
 
  •  delivering these services; and
 
  •  timely billing for these services.
 
Because our business plan provides for continued growth in the number of customers that we serve and services offered, there is a need to continue to develop our business support systems on a schedule sufficient to meet proposed service rollout dates. The failure to continue to develop effective business support systems could harm our ability to implement our business plans and meet our financial goals and objectives.
 
Changes in financial accounting standards or practices may cause adverse, unexpected financial reporting fluctuations and affect our reported results of operations.
 
A change in accounting standards or practices can have a significant effect on our operating results and may affect our reporting of transactions completed before the change is effective. New accounting pronouncements and varying interpretations of existing accounting pronouncements have occurred and may occur in the future. Changes to existing rules or the questioning of current practices may adversely affect our reported financial results or the way we conduct our business. For example, our recent adoption of SFAS 123R in 2006 has increased the amount of share-based compensation expense we record. This, in turn, has impacted our results of operations for the periods since this adoption and has made it more difficult to evaluate our recent financial results relative to prior periods. Under SFAS 123R, unrecognized stock-based compensation totaled $30.1 million at December 31, 2006.
 
We will incur significant increased costs as a result of operating as a public company, and our management will be required to devote substantial time to new compliance initiatives.
 
As a public company, we will incur significant accounting and other expenses that we did not incur as a private company. These expenses include increased accounting, legal and other professional fees, insurance premiums, investor relations costs, and costs associated with compensating our independent directors. In addition, the Sarbanes-Oxley Act of 2002, as well as rules subsequently implemented by the Securities and Exchange Commission and the Nasdaq Global Market, impose additional requirements on public companies, including requiring changes in corporate governance practices. For example, the listing requirements of the Nasdaq Global Market require that we satisfy certain corporate governance requirements relating to independent directors, audit committees, distribution of annual and interim reports, stockholder meetings, stockholder approvals, solicitation of proxies, conflicts of interest, stockholder voting rights and codes of conduct. Our management and other personnel will need to devote a substantial amount of time to these compliance initiatives. Moreover, these rules and regulations will increase our legal and financial compliance costs and will make some activities more time-consuming and costly. For example, we expect these rules and regulations to make it more difficult and more expensive for us to obtain director and officer liability


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insurance, and we may be required to accept reduced policy limits and coverage or incur substantial additional costs to maintain the same or similar coverage. These rules and regulations could also make it more difficult for us to identify and retain qualified persons to serve on our board of directors, our board committees or as executive officers.
 
If we fail to maintain proper and effective internal controls, our ability to produce accurate financial statements could be impaired, which could adversely affect our operating results, our ability to operate our business and investors’ views of us.
 
We must ensure that we have adequate internal financial and accounting controls and procedures in place so that we can produce accurate financial statements on a timely basis. We will be required to spend considerable effort on establishing and maintaining our internal controls, which will be costly and time-consuming and will need to be re-evaluated frequently. We have very limited experience in designing and testing our internal controls. We are in the process of documenting, reviewing and, if appropriate, improving our internal controls and procedures in anticipation of being a public company and eventually being subject to Section 404 of the Sarbanes-Oxley Act of 2002, which will require annual management assessments of the effectiveness of our internal control over financial reporting. In addition, we will be required to file a report by our independent registered public accounting firm addressing these assessments beginning with our Annual Report on Form 10-K for the year ended December 31, 2008. Both we and our independent auditors will be testing our internal controls in anticipation of being subject to Section 404 requirements and, as part of that documentation and testing, may identify areas for further attention and improvement. Implementing any appropriate changes to our internal controls may entail substantial costs to modify our existing financial and accounting systems, take a significant period of time to complete, and distract our officers, directors and employees from the operation of our business. These changes may not, however, be effective in maintaining the adequacy of our internal controls, and any failure to maintain that adequacy, or a consequent inability to produce accurate financial statements on a timely basis, could increase our operating costs and could materially impair our ability to operate our business. In addition, investors’ perceptions that our internal controls are inadequate or that we are unable to produce accurate financial statements may seriously affect our stock price.
 
Failure to effectively expand our sales and marketing capabilities could harm our ability to increase our customer base and achieve broader market acceptance of our services.
 
Increasing our customer base and achieving broader market acceptance of our services will depend to a significant extent on our ability to expand our sales and marketing operations. Historically, we have concentrated our sales force at our headquarters in Tempe, Arizona. However, we have recently begun building a field sales force to augment our sales efforts and to bring our sales personnel closer to our current and potential customers. Developing such a field sales force will be expensive and we have limited knowledge in developing and operating a widely dispersed sales force. As a result, we may not be successful in developing an effective sales force, which could cause our results of operations to suffer.
 
We believe that there is significant competition for direct sales personnel with the sales skills and technical knowledge that we require. Our ability to achieve significant growth in revenue in the future will depend, in large part, on our success in recruiting, training and retaining sufficient numbers of direct sales personnel. We have expanded our sales and marketing personnel from a total of 13 at December 31, 2004 to 81 at March 1, 2007. New hires require significant training and, in most cases, take a significant period of time before they achieve full productivity. Our recent hires and planned hires may not become as productive as we would like, and we may be unable to hire or retain sufficient numbers of qualified individuals in the future in the markets where we do business. Our business will be seriously harmed if these expansion efforts do not generate a corresponding significant increase in revenue.


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If the estimates we make, and the assumptions on which we rely, in preparing our financial statements prove inaccurate, our actual results may be adversely affected.
 
Our financial statements have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires us to make estimates and judgments about, among other things, taxes, revenue recognition, share-based compensation costs, contingent obligations and doubtful accounts. These estimates and judgments affect the reported amounts of our assets, liabilities, revenue and expenses, the amounts of charges accrued by us, and related disclosure of contingent assets and liabilities. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances and at the time they are made. If our estimates or the assumptions underlying them are not correct, we may need to accrue additional charges that could adversely affect our results of operations, investors may lose confidence in our ability to manage our business and our stock price could decline.
 
As part of our business strategy, we may acquire businesses or technologies and may have difficulty integrating these operations.
 
We may seek to acquire businesses or technologies that are complementary to our business. Acquisitions involve a number of risks to our business, including the difficulty of integrating the operations and personnel of the acquired companies, the potential disruption of our ongoing business, the potential distraction of management, expenses related to the acquisition and potential unknown liabilities associated with acquired businesses. Any inability to integrate operations or personnel in an efficient and timely manner could harm our results of operations. We do not have prior experience as a company in this complex process of acquiring and integrating businesses. If we are not successful in completing acquisitions that we may pursue in the future, we may be required to reevaluate our business strategy, and we may incur substantial expenses and devote significant management time and resources without a productive result. In addition, future acquisitions will require the use of our available cash or dilutive issuances of securities. Future acquisitions or attempted acquisitions could also harm our ability to achieve profitability. We may also experience significant turnover from the acquired operations or from our current operations as we integrate businesses.
 
Risks Related to this Offering
 
The trading price of our common stock is likely to be volatile, and you might not be able to sell your shares at or above the initial public offering price.
 
The trading prices of the securities of technology companies have been highly volatile. Further, our common stock has no prior trading history. Factors affecting the trading price of our common stock will include:
 
  •  variations in our operating results;
 
  •  announcements of technological innovations, new services or service enhancements, strategic alliances or significant agreements by us or by our competitors;
 
  •  commencement or resolution of, or our involvement in, litigation, particularly our current litigation with Akamai and MIT;
 
  •  recruitment or departure of key personnel;
 
  •  changes in the estimates of our operating results or changes in recommendations by any securities analysts that elect to follow our common stock;
 
  •  developments or disputes concerning our intellectual property or other proprietary rights;
 
  •  the gain or loss of significant customers;


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  •  market conditions in our industry, the industries of our customers and the economy as a whole; and
 
  •  adoption or modification of regulations, policies, procedures or programs applicable to our business.
 
In addition, if the market for technology stocks or the stock market in general experiences loss of investor confidence, the trading price of our common stock could decline for reasons unrelated to our business, operating results or financial condition. The trading price of our common stock might also decline in reaction to events that affect other companies in our industry even if these events do not directly affect us. Each of these factors, among others, could cause the value of your investment in our common stock to decline. Some companies that have had volatile market prices for their securities have had securities class actions filed against them. If a suit were filed against us, regardless of its merits or outcome, it could result in substantial costs and divert management’s attention and resources. This could harm our business and cause our operating results and financial condition to suffer.
 
Our securities have no prior market and our stock price may decline after the offering.
 
Prior to this offering, there has been no public market for shares of our common stock. Although we have applied to have our common stock listed on the Nasdaq Global Market, an active public trading market for our common stock may not develop or, if it develops, may not be maintained after this offering. Our company, the representatives of the underwriters and our qualified independent underwriter will negotiate to determine the initial public offering price. The initial public offering price may be higher than the trading price of our common stock following this offering. As a result, you could lose all or part of your investment.
 
A significant portion of our total outstanding shares are restricted from immediate resale but may be sold into the market in the near future. If there are substantial sales of our common stock, the price of our common stock could decline.
 
The price of our common stock could decline if there are substantial sales of our common stock in the public stock market after this offering. After this offering, we will have          outstanding shares of common stock based on the number of shares outstanding as of December 31, 2006. This includes           shares being sold in this offering, all of which may be resold in the public market immediately following this offering. The remaining           shares, or approximately          % of our outstanding shares after this offering, are currently restricted as a result of securities laws or lock-up agreements but will be able to be sold in the near future as set forth below:
 
     
Number of
   
shares and
   
percentage of
   
total outstanding
 
Date available for sale into public market
 
           shares, or     %
  Immediately after this offering.
           shares, or     %
  Generally, 180 days after the date of this prospectus due to lock-up agreements between certain of the holders of these shares and the underwriters and to contractual arrangements between the other holders of these shares and us, subject to a potential extension under certain circumstances.
           shares, or     %
  At various dates more than 180 days after the date of this prospectus.


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After this offering, the holders of an aggregate of 29,960,170 shares of our common stock as of December 31, 2006, including entities affiliated with one of our lead underwriters for this offering, will have rights, subject to some conditions, to require us to file registration statements covering their shares or to include their shares in registration statements that we may file for ourselves or other stockholders. We also intend to register the issuance of all shares of common stock that we have issued and may issue under our option plans. Once we register the issuance of these shares, they can be freely sold in the public market upon issuance, subject to lock-up agreements. Due to these factors, sales of a substantial number of shares of our common stock in the public market could occur at any time. These sales, or the perception in the market that the holders of a large number of shares intend to sell shares, could reduce the market price of our common stock.
 
If securities or industry analysts do not actively follow our business or if they publish unfavorable research about our business, our stock price and trading volume could decline.
 
The trading market for our common stock will depend in part on the research and reports that securities or industry analysts publish about us or our business. We do not currently have and may never obtain research coverage by securities and industry analysts. If no securities or industry analysts commence coverage of our company, the trading price for our stock may be negatively impacted. In the event we obtain securities or industry analyst coverage, if one or more of the analysts who covers us downgrades our stock or publishes unfavorable research about our business, our stock price would likely decline. If one or more of these analysts ceases coverage of our company or fails to publish reports on us regularly, demand for our stock could decrease, which could cause our stock price and trading volume to decline.
 
Insiders will continue to have substantial control over us after this offering and will be able to influence corporate matters.
 
Upon completion of this offering, our directors and executive officers and their affiliates will beneficially own, in the aggregate, approximately          % of our outstanding common stock, including approximately          % beneficially owned by investment entities affiliated with Goldman Sachs & Co., our co-lead underwriter in this offering, in each case assuming no exercise of the underwriters’ option to purchase additional shares from us. These amounts compare to approximately          % of our outstanding common stock represented by the shares sold in this offering, also assuming no exercise of the underwriters’ option to purchase additional shares from us. As a result, these stockholders will be able to exercise significant influence over all matters requiring stockholder approval, including the election of directors and approval of significant corporate transactions, such as a merger or other sale of our company or its assets. This concentration of ownership could limit your ability to influence corporate matters and may have the effect of delaying or preventing a third party from acquiring control over us.
 
Because affiliates of the co-lead underwriter for this offering hold a substantial equity interest in us, the co-lead underwriter for this offering may have interests that conflict with yours as an investor in our common stock.
 
In July 2006, we completed the sale of our Series B preferred stock to certain investors, after which sale certain entities affiliated with Goldman Sachs & Co., the co-lead underwriter for this offering, held approximately 45% of the outstanding shares of our capital stock, and will hold     % after the completion of this offering. Because affiliates of Goldman Sachs & Co. own more than 10% of our outstanding capital stock, Goldman Sachs & Co. is deemed to be an affiliate of ours under Rule 2720(b)(1) of the NASD Conduct Rules and, therefore, the underwriters for this offering may also be deemed to have a conflict of interest under Rule 2720 of the NASD Conduct Rules. Accordingly, this offering will be made in compliance with the applicable NASD Conduct Rules, which require that the initial public offering price can be no higher than that recommended by a “qualified independent underwriter,” as defined by the NASD. Morgan Stanley & Co. Incorporated is serving in that capacity.


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We cannot assure you that the use of a qualified independent underwriter will be sufficient to eliminate any actual or potential conflicts of interest. For more information regarding the role of the qualified independent underwriter in this offering and other relationships we and our affiliates have with the underwriters, we refer you to the disclosure under the heading, “Underwriting.”
 
As a new investor, you will experience substantial dilution as a result of this offering and future equity issuances.
 
The initial public offering price per share is substantially higher than the pro forma net tangible book value per share of our common stock outstanding prior to this offering. As a result, investors purchasing common stock in this offering will experience immediate substantial dilution of $      per share. In addition, we have issued options to acquire common stock at prices significantly below the initial public offering price. To the extent outstanding options are ultimately exercised, there will be further dilution to investors in this offering. This dilution is due in large part to the fact that our earlier investors paid substantially less than the initial public offering price when they purchased their shares of common stock. In addition, if the underwriters exercise their option to purchase additional shares from us or if we issue additional equity securities, you will experience additional dilution.
 
Anti-takeover provisions in our charter documents and Delaware law could discourage, delay or prevent a change in control of our company and may affect the trading price of our common stock.
 
We are a Delaware corporation and the anti-takeover provisions of the Delaware General Corporation Law may discourage, delay or prevent a change in control by prohibiting us from engaging in a business combination with an interested stockholder for a period of three years after the person becomes an interested stockholder, even if a change in control would be beneficial to our existing stockholders. In addition, our restated certificate of incorporation and amended and restated bylaws may discourage, delay or prevent a change in our management or control over us that stockholders may consider favorable. Our restated certificate of incorporation and amended and restated bylaws, which will be in effect as of the closing of this offering:
 
  •  authorize the issuance of “blank check” preferred stock that could be issued by our board of directors to thwart a takeover attempt;
 
  •  establish a classified board of directors, as a result of which the successors to the directors whose terms have expired will be elected to serve from the time of election and qualification until the third annual meeting following their election;
 
  •  require that directors only be removed from office for cause and only upon a supermajority stockholder vote;
 
  •  provide that vacancies on the board of directors, including newly created directorships, may be filled only by a majority vote of directors then in office;
 
  •  limit who may call special meetings of stockholders;
 
  •  prohibit stockholder action by written consent, requiring all actions to be taken at a meeting of the stockholders; and
 
  •  require supermajority stockholder voting to effect certain amendments to our restated certificate of incorporation and amended and restated bylaws.
 
For more information regarding these and other provisions, see the section titled “Description of Capital Stock — Anti-Takeover Effects of Delaware Law and our Certificate of Incorporation and Bylaws.”


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Our management will have broad discretion over the use of the proceeds we receive in this offering and might not apply the proceeds in ways that increase the value of your investment.
 
Our management will have broad discretion to use the net proceeds from this offering, and you will be relying on the judgment of our management regarding the application of these proceeds. Our management might not apply the net proceeds of this offering in ways that increase the value of your investment. We expect to use the net proceeds from this offering for general corporate purposes, including working capital and capital expenditures, which may in the future include investments in, or acquisitions of, complementary businesses, services or technologies, or the repayment of all or a portion of our outstanding credit facility. We have not allocated these net proceeds for any specific purposes. Our management might not be able to yield a significant return, if any, on any investment of these net proceeds. You will not have the opportunity to influence our decisions on how to use the net proceeds from this offering.
 
We do not intend to pay dividends on our common stock.
 
We have never declared or paid any cash dividend on our common stock. We currently intend to retain any future earnings and do not expect to pay any dividends in the foreseeable future.


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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
 
This prospectus contains forward-looking statements that involve substantial risks and uncertainties. All statements, other than statements of historical facts, included in this prospectus regarding our strategy, future operations, future financial position, future revenue, projected costs, prospects and plans and objectives of management are forward-looking statements.
 
Forward-looking statements include, but are not limited to, statements about:
 
  •  anticipated trends and challenges in our business and the markets in which we operate;
 
  •  our ability to compete in our industry and innovation by our competitors;
 
  •  our ability to establish and maintain intellectual property rights, including the timing and potential consequences of our current lawsuit with Akamai and MIT;
 
  •  our expectations regarding our expenses, sales and operations;
 
  •  our ability to attract and retain customers;
 
  •  our ability to anticipate market needs or develop new or enhanced services to meet those needs;
 
  •  our ability to manage growth and to expand our infrastructure;
 
  •  our ability to manage expansion into international markets and new industries;
 
  •  our ability to hire and retain key personnel;
 
  •  our expectations regarding the use of proceeds from this offering;
 
  •  our ability to successfully identify and manage any potential acquisitions; and
 
  •  our anticipated cash needs and our estimates regarding our capital requirements and our need for additional financing.
 
The words “anticipates,” “believes,” “estimates,” “expects,” “intends,” “may,” “plans,” “projects,” “will,” “would” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements and you should not place undue reliance on our forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements that we make. We have included important factors in the cautionary statements included in this prospectus, particularly in the section entitled “Risk Factors,” that we believe could cause actual results or events to differ materially from the forward-looking statements that we make. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or investments we may make. The forward-looking statements in this prospectus relate only to events as of the date on which the statements were made. We do not assume any obligation to update any forward-looking statements, except as required by law.


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USE OF PROCEEDS
 
We estimate that we will receive net proceeds of approximately $113.9 million from the sale of the shares of common stock offered in this offering, based on an assumed initial public offering price of $      per share, the mid-point of the range set forth on the cover page of this prospectus, and after deducting the estimated underwriting discounts and estimated offering expenses payable by us. Each $1.00 increase or decrease in the assumed initial public offering price of $      per share would increase or decrease, as applicable, the net proceeds to us by approximately $      million, assuming the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting the estimated underwriting discounts and commissions payable by us. If the underwriters’ over-allotment option is exercised in full, we estimate that our net proceeds will be approximately $138.3 million. We will not receive any proceeds from the sale of shares of common stock in this offering by the selling stockholders, although we will bear the costs, other than underwriting discounts and commissions, associated with the sale of these sales.
 
The principal purposes for this offering are to fund our capital expenditures for network and other equipment, to increase our working capital, to create a public market for our common stock, to increase our ability to access the capital markets in the future, to provide liquidity for our existing stockholders and for general corporate purposes. In addition, we intend to repay the outstanding balance under our credit facility with Silicon Valley Bank, which carries a variable interest rate based on the prime or LIBOR rate ranging from 0% to 3.25% over the applicable rate, and maturation dates ranging from 2007 to 2011. At December 31, 2006, the outstanding balance under our credit facility with Silicon Valley Bank equalled approximately $23.8 million.
 
We may also use a portion of the net proceeds to acquire or invest in complementary businesses, products or services, or to obtain rights to such complementary technologies. We have no commitments with respect to any such acquisitions or investments. We may find it necessary or advisable to use the net proceeds for other purposes, and we will have broad discretion in the application of the net proceeds. Pending the uses described above, we intend to invest the net proceeds in short-term, interest-bearing, investment-grade securities.
 
DIVIDEND POLICY
 
We have never declared or paid any dividends on our capital stock. We currently expect to retain any future earnings for use in the operation and expansion of our business and do not anticipate paying any cash dividends. Any further determination to pay dividends on our common stock will be at the discretion of our board of directors and will depend on our financial condition, results of operations, capital requirements and other factors that our board of directors considers relevant.


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CAPITALIZATION
 
The following table sets forth our unaudited cash, cash equivalents and capitalization as of December 31, 2006. Our cash, cash equivalents and capitalization is presented:
 
  •  on an actual basis;
 
  •  on a pro forma basis reflecting the filing of our amended and restated certificate of incorporation and the conversion of each outstanding share of preferred stock into one share of common stock upon the closing of this offering; and
 
  •  On a pro forma as-adjusted basis to give effect to the sale of shares of common stock by us in this offering at an assumed initial public offering price of $      per share, the mid-point of the range set forth on the cover page of this prospectus, and after deducting the estimated underwriting discounts and estimated offering expenses payable by us.
 
You should read this table together with the sections of this prospectus entitled “Selected Consolidated Financial Data” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and with our consolidated financial statements and related notes beginning on page F-1.
 
                         
    As of December 31, 2006  
                Pro Forma
 
   
Actual
   
Pro Forma
   
As Adjusted(1)
 
    (in thousands, except share data)  
 
Cash and cash equivalents
  $ 7,611     $ 7,611     $ 121,461  
                         
Long-term debt, less current portion (net of discount of $470)
    20,415       20,415       20,415  
Stockholders’ equity:
                       
Undesignated preferred stock, $0.001 par value; no shares authorized, issued and outstanding, actual; 5,000,000 shares authorized, no shares issued and outstanding, pro forma and pro forma as adjusted
                 
Convertible preferred stock, $0.001 par value; 33,314,000 shares authorized, 29,960,170 shares issued and outstanding, actual; no shares authorized, issued and outstanding, pro forma and pro forma as adjusted
    30              
Common stock, $0.001 par value; 80,100,000 shares authorized, 14,554,794 shares issued and outstanding, actual; 100,000,000 shares authorized, pro forma and pro forma as adjusted; 44,514,964 shares issued and outstanding, pro forma;           shares issued and outstanding, pro forma as adjusted
    14       44          
Additional paid-in capital
    41,712       41,712          
Accumulated other comprehensive loss
    (113 )     (113 )     (113 )
Accumulated deficit
    (5,054 )     (5,054 )     (5,054 )
                         
Total stockholders’ equity
    36,589       36,589       150,439  
                         
Total capitalization
  $ 57,004     $ 57,004     $ 170,854  
                         
 
(1) Each $1.00 increase or decrease in the assumed initial public offering price of $      per share would increase or decrease, as applicable, the amount of additional paid-in capital, total stockholders’ equity and total capitalization by approximately $      million, assuming the number of shares


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offered by us, as set forth on the cover of this prospectus, remains the same and after deducting the estimated underwriting discounts and commissions payable by us.
 
The number of pro forma as-adjusted shares of common stock shown as issued and outstanding is based on the number of shares of our common stock outstanding as of December 31, 2006 and excludes:
 
  •  3,767,495 shares of common stock issuable upon exercise of options outstanding as of December 31, 2006 at a weighted average exercise price of $4.47 per share;
 
  •  65,390 shares of common stock issuable upon exercise of a warrant outstanding as of December 31, 2006 at an exercise price of $0.22 per share;
 
  •  602,836 shares of common stock reserved for future issuance under our Amended and Restated 2003 Incentive Compensation Plan as of December 31, 2006, plus an additional 950,000 shares that we reserved for issuance under this plan in March 2007; and
 
  •             shares of common stock reserved for future issuance under our 2007 Equity Incentive Plan adopted in          , subject to future adjustment as more fully described in “Management — Employee Benefit Plans.”


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DILUTION
 
Our net tangible book value as of December 31, 2006 was $36.2 million, or $0.81 per share of pro forma common stock. Pro forma net tangible book value per share represents the amount of our total tangible assets reduced by the amount of our total liabilities and divided by the total number of shares of common stock outstanding including shares of common stock issued upon the conversion of all outstanding shares of our preferred stock. Dilution in pro forma as adjusted net tangible book value per share represents the difference between the amount per share paid by purchasers of shares of common stock in this offering and the pro forma as adjusted net tangible book value per share of common stock immediately after the completion of this offering. After giving effect to the sale of the shares of common stock offered by us at an assumed initial public offering price of $      per share, the mid-point of the range set forth on the cover page of this prospectus, and after deducting the estimated underwriting discounts and estimated offering expenses payable by us, our pro forma as adjusted net tangible book value as of December 31, 2006 would have been $      million, or $      per share of common stock. This represents an immediate increase in pro forma net tangible book value of $      per share to existing stockholders and an immediate dilution of $      per share to new investors in our common stock. The following table illustrates this dilution on a per share basis:
 
                 
Assumed initial public offering price per share
          $        
Pro forma net tangible book value per share as of December 31, 2006, before giving effect to this offering
  $                
                 
Increase in pro forma net tangible book value per share attributable to new investors
               
                 
Pro forma as adjusted net tangible book value per share after giving effect to this offering
               
                 
Dilution per share to new investors in this offering
          $    
                 
 
A $1.00 increase or decrease in the assumed initial public offering price of $      would increase or decrease, as applicable, our pro forma as adjusted net tangible book value per share after this offering by $      per share and the dilution in pro forma as adjusted net tangible book value to new investors by $      per share, assuming the number of shares offered by us, as set forth on the cover of this prospectus, remains the same and after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us.
 
If the underwriters exercise their option to purchase additional shares of our common stock in full in this offering, the pro forma as adjusted net tangible book value per share after giving effect to this offering would be $      per share, and the dilution in pro forma net tangible book value per share to investors in this offering would be $      per share.
 
The following table summarizes, on a pro forma as adjusted basis as of December 31, 2006 and after giving effect to the offering, based on an assumed initial public offering price of $      per share, the differences between existing stockholders and new investors with respect to the number of shares of common stock purchased from us, the total consideration paid to us and the average price per share paid.
 
                                         
    Shares Purchased     Total Consideration     Average Price
 
   
Number
   
Percent
   
Amount
   
Percent
   
Per Share
 
 
Existing stockholders
                        %   $                     %   $             
New investors
                                           
                                         
Total
            100.0 %   $             100.0 %        
                                         
 
A $1.00 increase or decrease in the assumed initial public offering price of $      per share would increase or decrease, as applicable, total consideration paid by new investors and total


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consideration paid by all stockholders by approximately $      million, assuming that the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same.
 
If the underwriters exercise their over-allotment option in full, our existing stockholders would own     % and our new investors would own     % of the total number of shares of our common stock outstanding after this offering.
 
The above discussion and tables assume no exercise of 3,767,495 shares of common stock issuable upon the exercise of stock options outstanding as of December 31, 2006 with a weighted-average exercise price of approximately $4.47 per share and 65,390 shares of common stock issuable upon the exercise of a warrant outstanding as of the date of this prospectus with an exercise price of $0.22 per share. If all of these options and this warrant were exercised, then:
 
  •  pro forma as adjusted net tangible book value per share would increase from $           to $          , resulting in a decrease in dilution to new investors of $           per share;
 
  •  our existing stockholders, including the holders of these options and this warrant, would own     % and our new investors would own     % of the total number of shares of our common stock outstanding upon the completion of this offering; and
 
  •  our existing stockholders, including the holders of these options and this warrant, would have paid     % of total consideration, at an average price per share of $          , and our new investors would have paid     % of total consideration.


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SELECTED CONSOLIDATED FINANCIAL DATA
 
The following tables provide our selected consolidated financial data. The selected consolidated statement of operations data for each of the three years in the period ended December 31, 2006, and the selected consolidated balance sheet data as of December 31, 2005 and 2006 have been derived from our audited consolidated financial statements included elsewhere in this prospectus. The selected consolidated balance sheet data as of December 31, 2004 was derived from our audited consolidated financial statements that are not included in this prospectus. The selected consolidated statement of operations data for the years ended December 31, 2002 and 2003 and the selected consolidated balance sheet data as of December 31, 2002 and 2003 have been derived from our unaudited consolidated financial statements that are not included in this prospectus. During the period from June 2001 through August 2003, we operated as a limited liability company. The full year pro forma 2003 financial data represents eight months of operations as a limited liability company and four months as a corporation. The share count and per share information for 2003 represents the end-of-year share count of the corporation. You should read this information together with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our consolidated financial statements and related notes included elsewhere in this prospectus. Our historical results are not necessarily indicative of the results to be expected in any future period.
 
                                                         
          Limelight
             
                Networks,
                         
    Limelight Networks, LLC     Inc.     Pro Forma(1)     Limelight Networks, Inc.  
          Eight Months
    Four Months
                         
    Year Ended
    Ended
    Ended
    Year Ended
                   
    December 31,
    August 31,
    December 31,
    December 31,
    Year Ended December 31,  
       
2003
   
2003
   
2003
   
2004
   
2005
   
2006
 
    (in thousands, except per share data)  
Consolidated Statement of Operations Data:
                                                       
Revenue
  $ 1,908     $ 3,353     $ 1,677     $ 5,030     $ 11,192     $ 21,303     $ 64,343  
Cost of revenue:
                                                       
Cost of services(2)
    1,164       1,909       954       2,863       4,834       9,037       25,662  
Depreciation — network
    108       168       84       252       775       2,851       10,316  
                                                         
Total cost of revenue
    1,272       2,077       1,038       3,115       5,609       11,888       35,978  
                                                         
Gross profit
    636       1,277       638       1,915       5,583       9,415       28,365  
Operating expenses:
                                                       
General and administrative(2)
    798       865       432       1,297       2,147       4,107       18,274  
Sales and marketing(2)
    708       689       345       1,034       2,078       3,078       6,841  
Research and development(2)
    52       101       51       152       231       462       3,151  
Depreciation and amortization
    23       25       13       38       69       100       226  
                                                         
Total operating expenses
    1,581       1,681       840       2,521       4,525       7,747       28,492  
                                                         
Operating income (loss)
    (945 )     (404 )     (202 )     (606 )     1,058       1,668       (127 )
Other income (expense):
                                                       
Interest expense
    (45 )     (46 )     (23 )     (69 )     (189 )     (955 )     (1,782 )
Interest income
                            1             208  
Other income (expense)
          11       6       17       (48 )     (16 )     175  
                                                         
Total other income (expense)
    (45 )     (35 )     (17 )     (52 )     (236 )     (971 )     (1,399 )
                                                         
Income (loss) before income taxes
    (990 )     (439 )     (219 )     (658 )     822       697       (1,526 )
Income tax expense (benefit)(3)
          (34 )     (17 )     (51 )     306       300       2,187  
                                                         
Net income (loss)
  $ (990 )   $ (405 )   $ (202 )   $ (607 )   $ 516     $ 397     $ (3,713 )
                                                         
Net income (loss) allocable to common stockholders
                  $ (607 )           $ 317     $ 185     $ (3,713 )
                                                         
Net income (loss) per common share:
                                                       
Net income (loss) per common share — basic
                  $ (0.03 )           $ 0.01     $ 0.01     $ (0.22 )
                                                         


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          Limelight
             
                Networks,
                         
    Limelight Networks, LLC     Inc.     Pro Forma(1)     Limelight Networks, Inc.  
          Eight Months
    Four Months
                         
    Year Ended
    Ended
    Ended
    Year Ended
                   
    December 31,
    August 31,
    December 31,
    December 31,
    Year Ended December 31,  
       
2003
   
2003
   
2003
   
2004
   
2005
   
2006
 
    (in thousands, except per share data)  
Net income (loss) per common share — diluted
                  $ (0.03 )           $ 0.01     $ 0.01     $ (0.22 )
                                                         
Weighted average shares used in calculating net income (loss) per common share — basic
                    23,079               23,125       23,158       17,061  
                                                         
Weighted average shares used in calculating net income (loss) per common share — diluted
                    23,079               25,971       27,375       17,061  
                                                         
 
(1) The pro forma information for the year ended December 31, 2003 has been prepared by adding the amounts in each line item in the consolidated statement of operations for the period from January 1, 2003 through August 31, 2003 of Limelight Networks, LLC, with the corresponding amounts for such line item in the consolidated statement of operations for the period from September 1, 2003 through December 31, 2003 of Limelight Networks, Inc. The pro forma results are provided for comparative purposes only and do not purport to indicate the results of operations that would have occurred if our conversion to a corporation had occurred on January 1, 2003.
 
(2) Includes stock-based compensation as follows:
 
                                                         
          Limelight
             
                Networks,
                         
    Limelight Networks, LLC     Inc.     Pro Forma     Limelight Networks, Inc.  
          Eight Months
    Four Months
                         
    Year Ended
    Ended
    Ended
    Year Ended
                   
    December 31,
    August 31,
    December 31,
    December 31,
    Year Ended December 31,  
       
2003
   
2003
   
2003
   
2004
   
2005
   
2006
 
    (in thousands)  
Cost of services
  $     $     $     $     $     $     $ 459  
General and administrative
                            14       94       6,686  
Sales and marketing
                                        329  
Research and development
                                        1,660  
                                                         
Total
  $     $     $     $     $ 14     $ 94     $ 9,134  
                                                         
 
(3) In 2006, approximately $7.6 million in stock-based compensation expense was not deductible for tax purposes by us, which resulted in us incurring income tax expense despite our having generated a loss before income taxes in this period. Future non-deductible compensation expense related to equity awards granted in 2006 are expected to be $9.4 million, $2.7 million, $2.7 million and $2.2 million respectively, for 2007, 2008, 2009 and 2010.
 
                                         
    Limelight
       
    Networks, LLC     Limelight Networks, Inc.  
    December 31,  
       
2003
   
2004
   
2005
   
2006
 
    (in thousands)  
Consolidated Balance Sheet Data:
                                       
Cash and cash equivalents
  $ 25     $ 97     $ 536     $ 1,536     $ 7,611  
Working capital (deficit)
    (1,122 )     (636 )     (695 )     (1,827 )     14,033  
Property and equipment, net
    440       1,080       3,018       11,986       41,784  
Total assets
    735       2,127       5,718       19,583       73,928  
Long-term debt, less current portion
                461       8,809       20,415  
Convertible preferred stock
          2       4       4       30  
Total stockholders’ equity
    857       174       1,239       1,823       36,589  

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
This management discussion of our financial condition and results of operations should be read together with the consolidated financial statements and related notes that are included elsewhere in this prospectus. This discussion contains forward-looking statements, which are based on current expectations that involve risks and uncertainties. Actual results and the timing of events may differ materially from those contained in these forward-looking statements due to a number of factors, including those discussed in the section entitled “Risk Factors” and elsewhere in this prospectus.
 
Overview
 
We were founded in 2001 as a provider of content delivery network services to deliver rich media over the Internet. We began development of our infrastructure in 2001 and began generating meaningful revenue in 2002. Since inception, we have added more than 700 customers and have grown our revenue to $64.3 million in 2006. We achieved full-year profitability for the first time in 2004, and we were again profitable on a full-year basis in 2005. During 2006, we became unprofitable primarily due to an increase in our stock-based compensation expense, which increased from $0.1 million in 2005 to $9.1 million in 2006, and litigation expenses of $3.2 million.
 
We primarily derive revenue from the sale of content delivery network, or CDN, services to our customers. These services include delivery of digital media, including video, music, games, software and social media. We generate revenue by charging customers on a per-gigabyte basis, or on a variable basis based on peak delivery rate for a fixed period of time, as our services are used.
 
The following table sets forth our historical operating results, as a percentage of revenue for the periods indicated:
 
                         
    Year Ended December 31,  
    2004     2005     2006  
 
Consolidated Statement of Operations Data:
                       
Revenue
    100 %     100 %     100 %
Cost of revenue:
                       
Cost of services
    43       42       40  
Depreciation — network
    7       13       16  
                         
Total cost of revenue
    50       56       56  
                         
Gross margin
    50       44       44  
Operating expenses:
                       
General and administrative
    19       19       28  
Sales and marketing
    19       14       11  
Research and development
    2       2       5  
Depreciation and amortization
    1       1        
                         
Total operating expenses
    41       36       44  
                         
Operating income (loss)
    9       8        
Other income (expense):
                       
Interest expense
    (2 )     (5 )     (3 )
Interest income
                1  
Other income (expense)
                 
                         
Total other income (expense)
    (2 )     (5 )     (2 )
                         
Income (loss) before income taxes
    7       3       (2 )
Income tax expense
    3       1       4  
                         
Net income (loss)
    4 %     2 %     (6 )%
                         


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Table of Contents

We have observed a number of trends in our business that are likely to have an impact on our financial condition and results of operations in the foreseeable future. Traffic on our network has grown dramatically in the last three years. This traffic growth is the result of growth in the number of new contracts, as well as growth in the traffic delivered to existing customers. Our near-exclusive focus is on providing content delivery network services, which we consider to be our sole industry segment.
 
Historically, we have derived a small portion of our revenue from outside of the United States. Our international revenue has grown recently, and we expect this trend to continue as we focus on our strategy of expanding our network and customer base internationally. For 2005 and 2006, 5% and 8%, respectively, of our revenue was derived outside of the United States, of which nearly all was derived from operations in Europe. We generated no revenue from outside the United Sates in 2004. We expect foreign revenue in 2007 will grow in absolute dollars and as a percentage of total revenue from what we have experienced historically. Our business is managed as a single geographic segment, and we report our financial results on this basis.
 
During any given fiscal period, a relatively small number of customers typically account for a significant percentage of our revenue. For example, in 2006, revenue generated from sales to our top 10 customers, in terms of revenue, accounted for approximately 58% of our total revenue. One of these top 10 customers, CDN Consulting, which acted as a reseller of our services primarily to a single large content provider, represented approximately 21% of our total revenue for that period. Prospectively, we do not expect sales to this reseller to continue at comparable levels. In 2005, no single customer accounted for more than 10% of our revenue, and in 2004, MusicMatch accounted for 13% of our revenue. We anticipate customer concentration levels will decline compared to prior years as our customer base continues to grow and diversify. In addition to selling to our direct customers, we maintain relationships with a number of resellers that purchase our services and charge a mark-up to their end customers. Revenue generated from sales to direct and reseller customers accounted for approximately 77% and 23% of our revenue in 2006, respectively.
 
In addition to these revenue-related business trends, our cost of revenue as a percentage of revenue has risen since 2004 primarily related to increased depreciation associated with increased investments to build out the capacity of our network. This increase, however, has been partially offset by a reduction in the cost of bandwidth as a percentage of revenue. Operating expense has increased in absolute dollars each period as revenue has increased. Beginning in the second half of 2006, these increases accelerated due to stock-based compensation and litigation-related expenses.
 
We make our capital investment decisions based upon careful evaluation of a number of variables, such as the amount of traffic we anticipate on our network, the cost of the physical infrastructure required to deliver that traffic, and the forecasted capacity utilization of our network. Our capital expenditures have increased substantially over time, in particular as we purchased servers and other computer equipment associated with our network build-out. For example, in 2004, 2005 and 2006, we made capital expenditures of $2.6 million, $10.9 million and $40.6 million, respectively. The substantial increase in capital expenditures in 2006, in particular, was related to a significant increase in our network capacity, reflecting our expectation for additional demand for our services. In the future, we expect these investments to be generally consistent in absolute dollars with our expenditures in 2006 and to decrease as a percentage of total revenue.
 
A significant portion of our historical capital expenditures involved related party transactions, in which we expended an aggregate of $2.1 million, $7.4 million and $29.9 million on server hardware in 2004, 2005 and 2006, respectively, from a supplier owned by one of our founders. This founder has recently divested himself of his ownership position in this supplier. In other transactions unrelated to this supplier relationship, we have also generated revenue from certain customers that are entities related to certain of our founders. The aggregate amounts of revenue derived from these related party transactions were $0.2 million, $0.2 million and $0.3 million in 2004, 2005 and 2006, respectively. We believe that all of our related-party transactions reflected arm’s length terms.


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We are currently engaged in litigation with one of our principal competitors, Akamai Technologies, Inc., or Akamai, and its licensor, the Massachusetts Institute of Technology, or MIT, in which these parties have alleged that we are infringing three of their patents. Although no trial date has been set, based on the schedule currently in place, we believe this case will go to trial in 2008. Our legal and other expenses associated with this case have been significant to date, including aggregate expenditures of $3.1 million in 2006. We have reflected the full amount of these litigation expenses in our 2006 general and administrative expenses, as reported in our consolidated statement of operations. We expect that these expenses will continue to remain significant and may increase as a trial date approaches. We expect to offset one-half of the cash impact of these litigation expenses through the availability of an escrow fund established in connection with our Series B preferred stock financing. Any cash reimbursed from this escrow account will be recorded as additional paid-in capital. The cash offset from the litigation expense funded through the escrow account is recorded on our balance sheet in paid-in capital. For additional details on this escrow fund, see the related discussion under the caption “— Liquidity and Capital Resources.”
 
We were profitable in 2004 and 2005. During 2006, we became unprofitable primarily due to an increase in our stock-based compensation expense, which increased from $0.1 million in 2005 to $9.1 million in 2006, and litigation expenses of $3.2 million. The significant increase in stock-based compensation reflects an increase in the level of option and restricted stock grants coupled with a significant increase in the fair market value per share at the date of grant.
 
Our future results will be affected by many factors identified below and in the section of this prospectus entitled “Risk Factors,” including our ability to:
 
  •  increase our revenue by adding customers and limiting customer cancellations and terminations, as well as increasing the amount of monthly recurring revenue that we derive from our existing customers;
 
  •  manage the prices we charge for our services, as well as the costs associated with operating our network;
 
  •  successfully manage our litigation with Akamai and MIT to conclusion; and
 
  •  prevent disruptions to our services and network due to accidents or intentional attacks.
 
As a result, we cannot assure you that we will achieve our expected financial objectives, including positive net income.
 
Basis of Presentation
 
Revenue
 
We primarily derive revenue from the sale of content delivery network, or CDN, services to our customers. These services include delivery of digital media, including video, music, games, software and social media. We generate revenue by charging customers on a per-gigabyte basis, or on a variable basis based on peak delivery rate for a fixed period of time, as our services are used. Our customer agreements relating to these recurring services generally have a term of one to three years. However, some of our contracts with large customers operate on a month-to-month basis. The majority of our agreements generally commit the customer to a minimum monthly level of usage and provide the rate at which the customer must pay for actual usage above the monthly minimum. Our customer agreements typically automatically renew at the end of the initial term for an additional period unless the customer elects not to renew. Based on service usage experience, we and our customers often negotiate revised monthly minimum usage levels or other modified services or terms during a commitment period. For example, in exchange for increased minimum usage levels, we often agree to a reduced per-gigabyte pricing structure. Historically, we have derived substantially all of our revenue from these recurring service arrangements, which accounted for 94%, 98% and 99% of our revenue in 2004, 2005 and 2006, respectively.


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Table of Contents

 
Cost of Revenue
 
Cost of revenue consists of costs related to the delivery of services, as well as the depreciation costs associated with our network. Costs related to the delivery of our services include:
 
  •  fees related to bandwidth provided by network operators;
 
  •  fees paid for the lease of private line capacity for our backbone;
 
  •  fees paid for co-location services, which are the housing of servers in third-party data centers;
 
  •  network operations employee costs, including stock-based compensation expense; and
 
  •  costs associated with licenses.
 
We enter into contracts with third-party network and data center providers, with terms typically ranging from several months to several years. Our contracts related to bandwidth provided by network operators generally commit us to pay either a fixed monthly fee or monthly fees plus additional fees for bandwidth usage above a contracted level. Our master contract with Global Crossing provides for the lease of private lines of varying capacity for our backbone, at fixed monthly fees with commitments ranging from 2 to 3 years. In addition to purchasing services from communications providers, we connect directly to many Internet service providers, or ISPs, generally without either party paying the other. This industry practice, known as peering, benefits us by allowing us to place content objects directly on user access networks, which helps us provide higher performance delivery for our customers. This practice also benefits the ISP and its customers by allowing them to receive improved content delivery through our local servers. We do not consider these relationships to represent the culmination of an earnings process. Accordingly, we do not recognize as revenue the value to the ISPs associated with the use of our servers nor do we recognize as expense the value of the bandwidth received at discounted or no cost.
 
During 2006, we continued to reduce our network bandwidth costs per gigabyte transferred by entering into new supplier contracts with lower pricing and amending existing contracts to take advantage of price reductions from our existing suppliers. However, due to increased traffic delivered over our network, our total bandwidth costs increased during 2006. We anticipate our overall bandwidth costs will continue to increase in absolute dollars as a result of expected higher traffic levels, partially offset by continued reductions in bandwidth costs per unit. We expect that our overall bandwidth costs as a percentage of revenue will remain relatively consistent with our historical results. If we do not experience lower per unit bandwidth pricing and we are unsuccessful at effectively routing traffic over our network through lower cost providers, network bandwidth costs could increase in excess of our expectations in future periods.
 
Depreciation expense related to our network equipment has increased over time due to additional equipment purchases, particularly those in 2006. We anticipate depreciation expense related to our network equipment will continue to increase in 2007 in absolute dollars and as a percentage of revenue due to full year depreciation on 2006 purchases and depreciation on additional purchases expected to be made in 2007. In 2007 and 2008, we expect that depreciation expense will increase in absolute dollars and decrease as a percentage of revenue.
 
In total, we believe our cost of revenue will increase in 2007 in both absolute dollars and as a percentage of revenue. Thereafter, we expect that the cost of revenue will increase in absolute dollars but could potentially decrease as a percentage of revenue. We expect to deliver more traffic on our network, which would result in higher expenses associated with the increased traffic; however, such costs are likely to be partially offset by lower bandwidth costs per unit. Additionally, we expect increases in depreciation expense related to our network equipment, as well as an increase in payroll and payroll-related costs, as we continue to make investments in our network to service our expanding customer base.


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Table of Contents

 
General and Administrative Expense
 
General and administrative expense consists primarily of the following components:
 
  •  payroll and related costs, including stock-based compensation expense for executive, finance, business applications, human resources and other administrative personnel;
 
  •  fees for professional services and litigation expenses; and
 
  •  other expenses such as insurance, allowance for doubtful accounts and corporate office rent.
 
We expect our general and administrative expense to increase in 2007 in absolute dollars due to increased stock-based compensation expense on equity grants made in the later part of 2006, payroll and related costs attributable to increased hiring, continued costs associated with ongoing litigation, as well as increased accounting and legal and other costs associated with public reporting requirements and compliance with the requirements of the Sarbanes-Oxley Act of 2002. In 2007 and in the longer term, we expect our general and administrative expense to decrease as a percentage of revenue.
 
Sales and Marketing Expense
 
Sales and marketing expense consists primarily of payroll and related costs, including stock-based compensation expense and commissions for personnel engaged in marketing, sales and service support functions, as well as advertising, promotional and travel expenses.
 
We anticipate our sales and marketing expense will continue to increase in future periods in absolute dollars and as a percentage of revenue due to an expected increase in commissions on higher forecast sales, the expected increase in hiring of sales and marketing personnel, increases in stock-based compensation expense and additional expected increases in marketing costs such as advertising.
 
Research and Development Expense
 
Research and development expense consists primarily of payroll and related costs and stock-based compensation expense associated with the design, development, testing and certification of the software, hardware and network architecture of our content delivery network system. Research and development costs are expensed as incurred.
 
We anticipate our research and development expense will increase in future periods in absolute dollars and as a percentage of revenue due to increased stock-based compensation expense as well as increased payroll and related costs associated with continued hiring of development personnel and investments in our core technology and refinements to our other service offerings.
 
Non-Network Depreciation Expense
 
Non-network depreciation expense consists of depreciation on equipment and furnishing used by general administrative, sales and marketing and research and development personnel.
 
Interest Expense
 
Interest expense includes interest paid on our debt obligations as well as amortization of deferred financing costs.
 
Interest Income
 
Interest income includes interest earned on invested cash balances and cash equivalents. We anticipate interest income will increase in 2007 in absolute dollars due to an increase in the cash balances and cash equivalents resulting from proceeds of this offering and operating cash flow we expect to generate during the year.


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Table of Contents

 
Other Income (Expense), Net
 
Our other income consists primarily of gains or losses from the disposal of assets.
 
Income Tax Expense
 
Income tax expense depends on the statutory rate in the countries where we sell our services as well as the expenses in any year that are not deductible in those jurisdictions. Historically, we have primarily been subject to taxation in the United States because we have sold the majority of our services to customers in the United States. In the future, we intend to further expand our sales of services to customers located outside the United States, in which case we would become further subject to taxation based on the foreign statutory rates in the countries where these sales took place, and our effective tax rate could fluctuate accordingly.
 
In 2006, approximately $7.6 million of stock-based compensation expense was not deductible for tax purposes by us, as certain executives and other employees made tax elections which established tax bases in these awards granted at lower than the fair value recognized within the financial statements. This permanent difference was material to our pre-tax net loss for the year of $1.5 million. Future non-tax deductible expenses related to equity awards granted in 2006 are expected to be $9.4 million, $2.7 million, $2.7 million and $2.2 million for 2007, 2008, 2009 and 2010, respectively, based upon the unvested portion of the equity awards outstanding at December 31, 2006, and the anticipated vesting at that time.
 
Critical Accounting Policies and Estimates
 
Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. These principles require us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses, cash flow and related disclosure of contingent assets and liabilities. Our estimates include those related to revenue recognition, accounts receivable reserves, income and other taxes, stock-based compensation and equipment and contingent obligations. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ from these estimates. To the extent that there are material differences between these estimates and our actual results, our future financial statements will be affected.
 
We define our “critical accounting policies” as those U.S. generally accepted accounting principles that require us to make subjective estimates about matters that are uncertain and are likely to have a material impact on our financial condition and results of operations as well as the specific manner in which we apply those principles. Our estimates are based upon assumptions and judgments about matters that are highly uncertain at the time the accounting estimate is made and applied and require us to continually assess a range of potential outcomes.
 
Revenue Recognition
 
We recognize service revenue in accordance with the Securities and Exchange Commission’s Staff Accounting Bulletin No. 104, “Revenue Recognition,” and the Financial Accounting Standards Board’s, or FASB, Emerging Issues Task Force Issue No. 00-21, “Revenue Arrangements with Multiple Deliverables.” Revenue is recognized only when the price is fixed or determinable, persuasive evidence of an arrangement exists, the service is performed and collectibility of the resulting receivable is reasonably assured.
 
At the inception of a customer contract for service, we make an assessment of that customer’s ability to pay for the services provided. If we subsequently determine that collection from the customer is not reasonably assured, we record an allowance for doubtful accounts and bad debt expense for all of that customer’s unpaid invoices and cease recognizing revenue for continued services provided


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until cash is received. Changes in our estimates and judgments about whether collection is reasonably assured would change the timing of revenue or amount of bad debt expense that we recognize.
 
We primarily derive income from the sale of CDN services to customers. For these services, we recognize the monthly minimum as revenue each month provided that an enforceable contract has been signed by both parties, the service has been delivered to the customer, the fee for the service is fixed or determinable and collection is reasonably assured. Should a customer’s usage of our service exceed the monthly minimum, we recognize revenue for such excess usage in the period of the usage. We typically charge the customer an installation fee when the services are first activated. The installation fees are recorded as deferred revenue and recognized as revenue ratably over the estimated life of the customer arrangement. We also derive income from services sold as discrete, non-recurring events or based solely on usage. For these services, we recognize revenue after an enforceable contract has been signed by both parties, the fee is fixed or determinable, the event or usage has occurred and collection is reasonably assured.
 
We periodically enter into multi-element arrangements. When we enter into such arrangements, each element is accounted for separately over its respective service or delivery period, provided that there is objective evidence of fair value for the separate elements. For example, objective evidence of fair value would include the price charged for the element when sold separately. If the fair value of each element cannot be objectively determined, the total value of the arrangement is recognized ratably over the entire service period to the extent that all services have begun to be provided at the outset of the period.
 
As of December 31, 2006 we had not licensed, but in the future we may license, software under perpetual and term license agreements. In such case, we would apply the provisions of Statement of Position, or SOP, 97-2, “Software Revenue Recognition,” as amended by SOP 98-9, “Modifications of SOP 97-2, Software Revenue Recognition, With Respect to Certain Transactions.” As prescribed by this guidance, we would apply the residual method of accounting. The residual method requires that the portion of the total arrangement fee attributable to undelivered elements, as indicated by vendor specific objective evidence of fair value, be deferred and subsequently recognized when delivered. The difference between the total arrangement fee and the amount deferred for the undelivered elements would be recognized as revenue related to the delivered elements, if all other revenue recognition criteria of SOP 97-2 are met.
 
We also sell our services through a reseller channel. Assuming all other revenue recognition criteria are met, we recognize revenue from reseller arrangements over the term of the contract, based on the reseller’s contracted non-refundable minimum purchase commitments plus amounts sold by the reseller to its customers in excess of the minimum commitments. These excess commitments are recognized as revenue in the period in which the service is provided. We recognize revenue under these agreements on a net or gross basis, depending on the terms of the arrangement, in accordance with EITF 99-19 “Recording Revenue Gross as a Principal Versus Net as an Agent.”
 
From time to time, we enter into contracts to sell our services or license our technology to unrelated companies at or about the same time we enter into contracts to purchase products or services from the same companies. If we conclude that these contracts were negotiated concurrently, we record as revenue only the net cash received from the vendor, unless both the fair values of our services delivered to the customer and of the vendor’s product or service we receive can be established objectively and realization of such value is believed to be probable.
 
We may from time to time resell licenses or services of third parties. We record revenue for these transactions when we have risk of loss related to the amounts purchased from the third party and we add value to the license or service, such as by providing maintenance or support for such license or service. If these conditions are present, we recognize revenue when all other revenue recognition criteria are satisfied.


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Deferred revenue includes amounts billed to customers for which revenue has not been recognized. Deferred revenue primarily consists of the unearned portion of monthly billed service fees, deferred installation and activation set-up fees and amounts billed under extended payment terms. Deferred revenue was not material to total liabilities or total revenues during prior years.
 
Accounts Receivable and Related Reserves
 
Trade accounts receivable are recorded at the invoiced amounts and do not bear interest. We record reserves as a reduction of our accounts receivable balance. Estimates are used in determining these reserves and are based upon our review of outstanding balances on a customer-specific, account-by-account basis. These estimates could change significantly if our customers’ financial condition changes or if the economy in general deteriorates. The allowance for doubtful accounts is based upon a review of customer receivables from prior sales with collection issues where we no longer believe that the customer has the ability to pay for prior services provided. We perform on-going credit evaluations of our customers. If such an evaluation indicates that payment is no longer reasonably assured for current services provided, any future services provided to that customer will result in the deferral of revenue until payment is made or we determine payment is reasonably assured. In addition, we recorded a reserve for service credits. Reserves for service credits are measured based on an analysis of credits to be issued after the month of billing related to management’s estimate of the resolution of customer disputes and billing adjustments. We do not have any off-balance sheet credit exposure related to our customers.
 
Stock-Based Compensation
 
Prior to January 1, 2006, we accounted for employee stock options pursuant to Statement of Financial Accounting Standards, or SFAS, No. 123, Accounting for Stock-Based Compensation, and SFAS No. 148, Accounting for Stock-Based Compensation — Transition and Disclosure. Under this method, compensation expense was recorded for stock options granted prior to January 1, 2006 using the minimum value method.
 
The fair value of the shares of common stock that underlie the stock options we have granted has historically been determined by our board of directors. Because there has been no public market for our common stock, our board has determined the fair value of our common stock at the time of grant of the option by considering a number of objective and subjective factors, including our sales of preferred stock to unrelated third parties, our operating and financial performance, the lack of liquidity of our capital stock, trends in the broader e-commerce market and other similar technology stocks. Beginning in July 2006, our board began receiving contemporaneous valuations performed by an unrelated valuation specialist.
 
In connection with the preparation of the financial statements necessary for a planned registration of shares with the Securities and Exchange Commission and based on the preliminary valuation information presented by the underwriters selected for the planned offering, we reassessed the estimated accounting fair value of common stock in light of the potential completion of this offering. The valuation methodology that most significantly impacted this reassessment of fair value was the market-based assessment of the valuation of existing comparable public companies. This methodology also de-emphasized the $260.0 million liquidation preference available to preferred shareholders in the event of a sale of our company. In determining the reassessed fair value of the common stock during 2006, we also determined it appropriate to reassess the estimate of accounting fair value for periods prior to December 31, 2006 based on operational achievements in executing against the operating plan and market trends. Because of the impact the achievement of unique milestones had on the valuation during the various points in time before the reassessment, certain additional adjustments for factors unique to us were considered in the reassessed values determined for the 12 months ended December 31, 2006, which impacted valuations throughout the twelve month period ended December 31, 2006. These included:


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  •  In July 2006, we sold a controlling interest to an investor group led by entities affiliated with Goldman, Sachs & Co. through the issuance of shares of Series B preferred stock, at a price of $4.89 per share, for total aggregate consideration of $130.0 million. As part of the transaction, we repurchased 20,880,000 shares of common stock for an aggregate net consideration of $102.1 million.
 
  •  In the fourth quarter of 2006, we appointed both a Chief Executive Officer and a Chief Financial Officer with past public company roles in a similar capacity.
 
  •  Revenue growth in 2006 exceeded 200%, to $64.3 million compared to revenue in 2005 of $21.3 million.
 
Based upon the reassessment, we determined the accounting fair value of the options granted to employees from February 1, 2006 to December 31, 2006 was greater than the exercise price for certain of those options.
 
Based upon the reassessment discussed above, we determined the reassessed accounting fair value of the options to purchase 5,385,542 shares of common stock granted to employees during the period from February 1, 2006 to December 31, 2006 ranged from $1.81 to $9.37 per share. Of these shares, 1,070,000 were issued at prices ranging from $9.80 to $19.80 for which the impact on the fair value was small given the grants were intended to be well above fair value.
 
Stock-based compensation expense for the year ended December 31, 2006 includes the difference between the reassessed accounting fair value per share of the common stock on the date of grant and the exercise price per share and is amortized over the vesting period of the underlying options using the straight-line method. There are significant judgments and estimates inherent in the determination of the reassessed accounting fair values. For this and other reasons, the reassessed accounting fair value used to compute the stock-based compensation expense may not be reflective of the fair market value that would result from the application of other valuation methods, including accepted valuation methods for tax purposes.
 
As of January 1, 2006, we have adopted SFAS No. 123 (revised 2004) Share-Based Payment, or SFAS No. 123R. We are required to adopt SFAS No. 123R under the prospective method, in which nonpublic entities that previously applied SFAS No. 123 using the minimum-value method, whether for financial statement recognition or pro forma disclosure purposes, would continue to account for unvested stock options outstanding at the date of adoption of SFAS No. 123R in the same manner as they had been accounted for prior to the adoption of SFAS No. 123R. That is, since we have been accounting for stock options using the minimum-value method under SFAS No. 123, we will continue to apply SFAS No. 123 in future periods to stock options outstanding at January 1, 2006. SFAS No. 123R requires measurement of all employee stock-based compensation awards using a fair-value method. The grant date fair value was determined using the Black-Scholes-Merton pricing model. The Black-Scholes-Merton valuation calculation requires us to make key assumptions such as future stock price volatility, expected terms, risk-free rates and dividend yield. The weighted-average expected term for stock options granted was calculated using the simplified method in accordance with the provisions of Staff Accounting Bulletin No. 107, Share-Based Payment. The simplified method defines the expected term as the average of the contractual term and the vesting period of the stock option. We have estimated the volatility rates used as inputs to the model based on an analysis of the most similar public companies for which we have data. We have used judgment in selecting these companies, as well as in evaluating the available historical volatility data for these companies.
 
SFAS No. 123R requires us to develop an estimate of the number of stock-based awards which will be forfeited due to employee turnover. Quarterly changes in the estimated forfeiture rate may have a significant effect on stock-based compensation, as the effect of adjusting the rate for all expense amortization after January 1, 2006 is recognized in the period the forfeiture estimate is changed. If the actual forfeiture rate is higher than the estimated forfeiture rate, then an adjustment is made to increase the estimated forfeiture rate, which will result in a decrease to the expense recognized in the


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financial statements. If the actual forfeiture rate is lower than the estimated forfeiture rate, then an adjustment is made to decrease the estimated forfeiture rate, which will result in an increase to the expense recognized in the financial statements. The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant. We have never paid cash dividends, and do not currently intend to pay cash dividends, and thus have assumed a 0% dividend yield.
 
We will continue to use judgment in evaluating the expected term, volatility and forfeiture rate related to our own stock-based awards on a prospective basis, and in incorporating these factors into the model. If our actual experience differs significantly from the assumptions used to compute our stock-based compensation cost, or if different assumptions had been used, we may have recorded too much or too little stock-based compensation cost.
 
We recognize expense using the straight-line attribution method. Unrecognized stock-based compensation totaled $30.1 million at December 31, 2006, of which we expect to amortize $15.2 million for 2007, and $7.7 million for 2008 and the remainder thereafter. We expect our stock-based compensation expense to increase as we grant additional options.
 
Contingencies
 
We record contingent liabilities resulting from asserted and unasserted claims against us, when it is probable that a liability has been incurred and the amount of the loss is reasonably estimable. We disclose contingent liabilities when there is a reasonable possibility that the ultimate loss will exceed the recorded liability. Estimating probable losses requires analysis of multiple factors, in some cases including judgments about the potential actions of third-party claimants and courts. Therefore, actual losses in any future period are inherently uncertain.
 
Deferred Taxes
 
When preparing our consolidated financial statements, we are required to estimate our income taxes in each of the jurisdictions in which we operate. We estimate our actual current tax liability together with assessing temporary differences resulting from differing treatment of items for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included within our consolidated balance sheet. We must then assess the likelihood our deferred tax assets will be recovered from future taxable income within the relevant jurisdiction and to the extent we believe that recovery is not likely, we must establish a valuation allowance. The financial statements included in this report do not reflect a valuation allowance on our deferred tax assets, because we believe it is “more likely than not” that our deferred tax assets will be recovered from future taxable income. Should we determine we would not be able to realize all or part of our net deferred tax asset in the future, an adjustment to the deferred tax asset would be charged to expense in the period such determination was made.
 
We conduct business in various foreign countries. During 2006, we established corporations in a portion of the foreign countries in which we conduct business. We have not provided U.S. tax for the profits of our foreign corporations, as we intend to permanently reinvest these profits outside the United States.
 
Taxing authorities in the United States and other countries in which we do business are increasing their scrutiny of how businesses are taxed. We believe we maintain adequate tax reserves to offset any potential tax liabilities that may arise upon audit. If such amounts ultimately prove to be unnecessary, the associated reserves would be reversed, resulting in our recording a tax benefit in the period the reserves were no longer deemed necessary. Conversely, if our estimates prove to be less than the ultimate assessment, a charge to expense would be recorded in the period in which the assessment is determined.


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Results of Operations
 
Comparison of the Years Ended December 31, 2005 and 2006
 
Revenue
 
                                 
    Year Ended December 31,              
   
    Increase
    Percent
 
   
2005
   
2006
   
(Decrease)
   
Change
 
    (in thousands)        
 
Revenue
  $ 21,303     $ 64,343     $ 43,040       202 %
 
The increase in total revenue for 2006 as compared to 2005 was due to an increase in revenue from the sale of our recurring CDN services. The increase in CDN services revenue was primarily attributable to increases in the number of customers under recurring revenue contracts, as well as increases in traffic and additional services sold to new and existing customers.
 
Cost of Revenue
 
                                 
    Year Ended December 31,              
   
    Increase
    Percent
 
   
2005
   
2006
   
(Decrease)
   
Change
 
    (in thousands)        
 
Cost of revenue
  $ 11,888     $ 35,978     $ 24,090       203 %
 
The increase in cost of revenue for 2006 as compared to 2005 was primarily due to an increase in aggregate bandwidth and co-location fees of $13.1 million due to higher traffic levels, an increase in depreciation expense of network equipment of $7.4 million due to increased investment in our network, an increase of $1.6 million in royalty expenses, an increase in the payroll and related employee costs of $1.2 million associated with increased staff and an increase of stock-based compensation expense of $0.5 million and an increase of $0.3 million in other costs.
 
Cost of revenue in 2005 and 2006 was composed of the following:
 
                 
    Year Ended December 31,  
       
2006
 
    (in millions)  
 
Bandwidth and co-location fees
  $ 7.8     $ 20.9  
Depreciation — network
    2.9       10.3  
Payroll and related employee costs
    0.5       1.7  
Royalty Expenses
        $ 1.6  
Stock-based compensation expense
          0.5  
Other costs
    0.7       1.0  
                 
Total cost of revenue
  $ 11.9     $ 36.0  
 
General and Administrative
 
                                 
    Year Ended December 31,              
    _ _      Increase
    Percent
 
   
2005
   
2006
   
(Decrease)
   
Change
 
    (in thousands)        
 
General and administrative
  $ 4,107     $ 18,274     $ 14,167       345 %


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The increase in general and administrative expenses for 2006 as compared to 2005 was primarily due to an increase of $6.6 million in stock-based compensation expense, an increase of $3.2 million in professional fees and legal expenses related to our litigation with Akamai and MIT, including $1.6 million which is reimbursable to us from an escrow fund established in connection with our 2006 stock repurchase, an increase of $1.9 million in payroll and related employee costs as a result of headcount growth, an increase of $0.6 million in bad debt expense and an increase in other expenses of $1.9 million.
 
The following table quantifies the net change in the components of general and administrative expenses between 2005 and 2006:
 
                 
    Year Ended December 31,  
       
2006
 
    (in millions)  
 
Stock-based compensation expense
  $ 0.1       $6.7  
Professional fees and legal expenses
    0.2       3.4  
Payroll and related employee costs
    1.8       3.7  
Bad debt expense
    0.1       0.7  
Other expenses
    1.9       3.8  
                 
Total
  $ 4.1       $18.3  
 
Sales and Marketing
 
                                 
    Year Ended December 31,              
   
    Increase
    Percent
 
   
2005
   
2006
   
(Decrease)
   
Change
 
    (in thousands)        
 
Sales and marketing
  $ 3,078     $ 6,841     $ 3,763       122 %
 
The increase in sales and marketing expenses for 2006 as compared to 2005 was primarily due to an increase of $2.1 million in payroll and related employee costs, including $1.1 million in additional salaries and $1.0 million in additional commissions on increased revenue. Additional increases were due to an increase of $0.3 million in stock-based compensation expense, an increase of $0.6 million in marketing programs, an increase of $0.3 million in reseller commissions and an increase of $0.4 million in other expenses. These increases are consistent with the 202% increase in revenue for the period.
 
The following table quantifies the net change in the components of sales and marketing expenses between 2005 and 2006:
 
                 
    Year Ended December 31,  
       
2006
 
    (in millions)  
 
Payroll and related employee costs
  $ 2.2     $ 4.3  
Stock-based compensation expense
          0.3  
Marketing programs
    0.7       1.3  
Reseller commissions
    0.1       0.4  
Other expenses
    0.1       0.5  
                 
Total
  $ 3.1     $ 6.8  


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Research and Development
 
                                 
   
Year Ended December 31,
    Increase
    Percent
 
   
2005
   
2006
   
(Decrease)
   
Change
 
    (in thousands)        
 
Research and development
  $ 462     $ 3,151     $ 2,689       582 %
 
The increase in research and development expenses for 2006 as compared to 2005 was primarily due to an increase of $1.7 million in stock-based compensation expense and an increase of $1.0 million in higher payroll and related employee costs associated with our hiring of additional network and software engineering personnel.
 
                 
    Year Ended December 31,  
       
2006
 
    (in millions)  
 
Stock-based compensation expense
  $     $ 1.7  
Payroll and related employee costs
    0.5       1.5  
                 
Total
  $ 0.5     $ 3.2  
 
Interest Expense
 
                                 
   
Year Ended December 31,
    Increase
    Percent
 
   
2005
   
2006
   
(Decrease)
   
Change
 
    (in thousands)        
 
Interest expense
  $ 955     $ 1,782     $ 827       87 %
 
The increase in interest expense for 2006 as compared to 2005 was due to increased borrowings, primarily to fund equipment purchases to build out our network.
 
Interest Income
 
                                 
    Year Ended December 31,     Increase
    Percent
 
   
2005
   
2006
   
(Decrease)
   
Change
 
    (in thousands)        
 
Interest income
  $     $ 208     $ 208       N/A  
 
The increase in interest and other income for 2006 as compared to 2005 was due to the increase in our average cash balance. In 2005, we generally operated with a minimal cash balance and therefore had no interest earnings.
 
Other Income (Expense), Net
 
                                 
    Year Ended December 31,     Increase
    Percent
 
    2005     2006    
(Decrease)
   
Change
 
    (in thousands)        
 
Other income (expense), net
  $ (16 )   $ 175     $ 191       1,194 %


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The increase in other income (expense), net was primarily related to gain on disposal of assets in 2006.
 
Income Tax Expense
 
                                 
    Year Ended December 31,              
    _ _      Increase
    Percent
 
   
2005
   
2006
   
(Decrease)
   
Change
 
    (in thousands)        
 
Income tax expense
  $ 300     $ 2,187     $ 1,887       629 %
 
We had income tax expense in 2006 despite having a pre-tax loss of $1.5 million due to the fact that in 2006, approximately $7.6 million of stock-based compensation expense was not deductible by us for tax purposes. This non-deductible stock compensation expense was material to our pre-tax net loss for the year of $1.5 million. Future non-deductible expenses related to equity awards granted in 2006 are expected to be $9.4 million, $2.7 million, $2.7 million and $2.2 million for 2007, 2008, 2009 and 2010, respectively, based upon the unvested portion of the equity awards outstanding at December 31, 2006, and the anticipated vesting at that time.
 
Comparison of the Years Ended December 31, 2004 and 2005
 
Revenue
 
                                 
    Year Ended December 31,        
   
  Increase
  Percent
   
2004
 
2005
 
(Decrease)
 
Change
    (in thousands)    
 
Revenue
  $ 11,192     $ 21,303     $ 10,111       90 %
 
The increase in total revenue for 2005 as compared to 2004 was due to an increase in revenue from the sale of our recurring CDN services. The increase in CDN services revenue was primarily attributable to increases in the number of customers under recurring revenue contracts, as well as increases in traffic and additional services sold to new and existing customers.
 
Cost of Revenue
 
                                 
    Year Ended December 31,        
    _ _    Increase
  Percent
   
2004
 
2005
 
(Decrease)
 
Change
    (in thousands)    
 
Cost of revenue
  $ 5,609     $ 11,888     $ 6,279       112 %
 
The increase in cost of revenue for 2005 as compared to 2004 was primarily due to an increase in aggregate bandwidth and co-location fees of $4.3 million due to higher traffic levels, an increase in depreciation expense of network equipment of $2.1 million due to increased investment in our network, and an increase in payroll and related employee costs of $0.2 million, offset by a decrease in other costs of $0.3 million.


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Cost of revenue in 2004 and 2005 was composed of the following:
 
                 
    Year Ended December 31,  
       
2005
 
    (in millions)  
 
Bandwidth and co-location fees
  $ 4.0     $ 8.3  
Depreciation — network
    0.8       2.9  
Payroll and related employee costs
    0.3       0.5  
Other costs
    0.5       0.2  
                 
Total cost of revenue
  $ 5.6     $ 11.9  
 
General and Administrative
 
                                 
    Year Ended December 31,   Increase
  Percent
   
2004
 
2005
 
(Decrease)
 
Change
    (in thousands)    
 
General and administrative
  $ 2,147     $ 4,107     $ 1,960       91 %
 
The increase in general and administrative expenses for 2005 as compared to 2004 was primarily due to an increase of $0.9 million in payroll and related employee costs associated with increased personnel and performance bonuses, an increase of $0.1 million of stock-based compensation expense, an increase of $0.1 million in professional fees and legal expenses and an increase of $0.9 million in other expenses, offset by a decrease of $0.1 million in bad debt expense.
 
The following table quantifies the net change in the components of general and administrative expenses between 2004 and 2005:
 
                 
    Year Ended
 
    December 31,  
       
2005
 
    (in millions)  
 
Payroll and related employee costs
  $ 0.9     $ 1.8  
Stock-based compensation expense
          0.1  
Professional fees and legal expenses
    0.1       0.2  
Bad debt expense
    0.2       0.1  
Other expenses
    0.9       1.8  
                 
Total
  $ 2.1     $ 4.1  
 
Sales and Marketing
 
                                 
    Year Ended December 31,     Increase
    Percent
 
   
2004
   
2005
   
(Decrease)
   
Change
 
    (in thousands)        
 
Sales and marketing
  $ 2,078     $ 3,078     $ 1,000       48 %
 
The increase in sales and marketing expenses for 2005 as compared to 2004 was primarily due to an increase of $0.8 million in payroll and related employee costs, particularly commissions, for sales and marketing personnel and an increase of $0.2 million in marketing programs. These increases are consistent with the 90% increase in revenue for the period.


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The following table quantifies the net change in the components of sales and marketing expenses between 2004 and 2005:
 
                 
    Year Ended
 
    December 31,  
       
2005
 
    (in millions)  
 
Payroll and related employee costs
  $ 1.4     $ 2.2  
Marketing programs
    0.5       0.7  
Reseller commissions
    0.1       0.1  
Other expenses
    0.1       0.1  
                 
Total
  $ 2.1     $ 3.1  
 
Research and Development
 
                                 
    Year Ended
             
    December 31,     Increase
    Percent
 
   
2004
   
2005
   
(Decrease)
   
Change
 
    (in thousands)        
 
Research and development
  $ 231     $ 462     $ 231       100 %
 
The increase in research and development expenses for 2005 as compared to 2004 was primarily due to higher payroll and related employee costs associated with our hiring of additional network and software engineering personnel.
 
Interest Expense
 
                                 
    Year Ended
             
   
December 31,
    Increase
    Percent
 
   
2004
   
2005
   
(Decrease)
   
Change
 
    (in thousands)        
 
Interest expense
  $ 189     $ 955     $ 776       405 %
 
The increase in interest expense for 2005 as compared to 2004 was due to increased borrowings, primarily to fund equipment purchases to build out our network.
 
Interest Income
 
                                 
    Year Ended December 31,     Increase
    Percent
 
   
2004
   
2005
   
(Decrease)
   
Change
 
    (in thousands)        
 
Interest income
  $ 1     $     $ (1 )     100 %
 
For the years 2005 and 2004, we generally operated with a minimal cash balance and therefore had little or no interest earnings.


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Other Income (Expense), Net
 
                                 
    Year Ended December 31,     Increase
    Percent
 
   
2004
   
2005
   
(Decrease)
   
Change
 
    (in thousands)        
 
Other income (expense), net
  $ (48 )   $ (16 )   $ (32 )     67 %
 
The decrease in other income (expense), net was $32,000.
 
Income Tax Expense
 
                                 
    Year Ended December 31,     Increase
    Percent
 
   
2004
   
2005
   
(Decrease)
   
Change
 
    (in thousands)        
 
Income tax expense
  $ 306     $ 300     $ (6 )     2 %
 
Income tax expense was essentially unchanged from 2005 as there was very little change in pre-tax income. Our effective tax rate in 2004 was 37% and in 2005 was 43%.


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Quarterly Results of Operations
 
The following tables set forth selected unaudited quarterly consolidated statements of operations for the last eight fiscal quarters, as well as the percentage that each line item represents of the total net revenue. The information for each of these quarters has been prepared on the same basis as the audited consolidated financial statements included elsewhere in this prospectus and, in the opinion of the management, includes all adjustments, consisting solely of normal recurring adjustments, necessary for the fair presentation of the results of operations for these periods. This data should be read in conjunction with the audited consolidated financial statements and related notes included elsewhere in this prospectus. These quarterly operating results are not necessarily indicative of our operating results for any future period.
 
                                                                 
    Three Months Ended  
    Mar 31,
    Jun 30,
    Sep 30,
    Dec 31,
    Mar 31,
    Jun 30,
    Sep 30,
    Dec 31,
 
   
2005
   
2005
   
2005
   
2005
   
2006
   
2006
   
2006
   
2006
 
    (in thousands)  
 
Revenue
  $ 3,593     $ 4,475     $ 5,638     $ 7,597     $ 10,838     $ 14,841     $ 17,057     $ 21,607  
Cost of revenue:
                                                               
Cost of services
    1,585       2,057       2,496       2,899       3,807       5,231       7,300       9,324  
Depreciation — network
    405       550       803       1,093       1,473       2,035       2,900       3,908  
                                                                 
Total cost of revenue
    1,990       2,607       3,299       3,992       5,280       7,266       10,200       13,232  
                                                                 
Gross profit
    1,603       1,868       2,339       3,605       5,558       7,575       6,857       8,375  
Operating expenses:
                                                               
General and administrative
    687       826       968       1,626       1,571       2,231       4,616       9,856  
Sales and marketing
    587       724       777       990       1,034       1,497       1,860       2,450  
Research and development
    88       109       119       146       321       437       1,193       1,200  
Depreciation and amortization
    22       25       26       27       28       44       63       91  
                                                                 
Total operating expenses
    1,384       1,684       1,890       2,789       2,954       4,209       7,732       13,597  
                                                                 
Operating income (loss)
    219       184       449       816       2,604       3,366       (875 )     (5,222 )
Other income (expense):
                                                               
Interest expense
    (101 )     (304 )     (245 )     (305 )     (505 )     (519 )     (340 )     (418 )
Interest income
                                        79       129  
Other income (expense)
                      (16 )                 70       105  
                                                                 
Total other income (expense)
    (101 )     (304 )     (245 )     (321 )     (505 )     (519 )     (191 )     (184 )
                                                                 
Income (loss) before income taxes
    118       (120 )     204       495       2,099       2,847       (1,066 )     (5,406 )
Income tax expense (benefit)
    51       (52 )     88       213       829       1,125       544       (311 )
                                                                 
Net income (loss)
  $ 67     $ (68 )   $ 116     $ 282     $ 1,270     $ 1,722     $ (1,610 )   $ (5,095 )
                                                                 
 


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    Three Months Ended  
    Mar 31,
    Jun 30,
    Sep 30,
    Dec 31,
    Mar 31,
    Jun 30,
    Sep 30,
    Dec 31,
 
   
2005
   
2005
   
2005
   
2005
   
2006
   
2006
   
2006
   
2006
 
 
Revenue
    100 %     100 %     100 %     100 %     100 %     100 %     100 %     100 %
Cost of revenue:
                                                               
Cost of services
    44       46       44       38       35       35       43       43  
Depreciation — network
    11       12       14       14       14       14       17       18  
                                                                 
Total cost of revenue
    55       58       59       52       49       49       60       61  
                                                                 
Gross margin
    45       42       41       48       51       51       40       39  
Operating expenses:
                                                               
General and administrative
    19       19       17       21       15       15       27       46  
Sales and marketing
    16       16       14       13       10       10       11       11  
Research and development
    2       2       2       2       3       3       7       6  
Depreciation and amortization
    1       1             1                          
                                                                 
Total operating expenses
    39       38       33       37       28       28       45       63  
                                                                 
Operating income (loss)
    6       4       8       11       23       23       (5 )     (24 )
Other income (expense):
                                                               
Interest expense
    (3 )     (7 )     (4 )     (4 )     (5 )     (4 )     (2 )     (2 )
Interest income
                                        1       1  
Other income (expense)
                                               
                                                                 
Total other income (expense)
    (3 )     (7 )     (4 )     (4 )     (5 )     (3 )     (1 )     (1 )
                                                                 
Income (loss) before income taxes
    3       (3 )     4       7       19       19       (6 )     (25 )
Income tax expense (benefit)
    1       (1 )     2       3       8       8       3       (1 )
                                                                 
Net income (loss)
    2 %     (2 )%     2 %     4 %     11 %     11 %     (9 )%     (24 )%
                                                                 
 
Our net revenue and cost of net revenue have increased sequentially during the last eight quarters associated with growth in service revenue from existing customers and the continuous addition of new customers each quarter.
 
To date, we have not identified any seasonal fluctuations in our quarterly results. However, our rapid revenue growth may have overshadowed any impact of seasonality.
 
Gross margins have fluctuated on a quarterly basis primarily related to the timing and amount of investment in the build out of our network capacity, which impacts the amount of depreciation. During the second half of 2006, our gross margins declined as depreciation and amortization increased due to the dramatic increase in the amount of capital investment in network equipment during 2006. Services cost as a percentage of revenue also increased due to expansion of bandwidth internationally, royalty fees and stock-based compensation expense.

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Operating expenses increased sequentially due to growth in the business. Operating expenses generally declined as a percentage of total revenue through the first half of 2006 as revenue growth outpaced the need for operating expense increases. During the second half of 2006, general and administrative expenses increased significantly, primarily due to amortization of deferred stock-based compensation expense and increased litigation costs. We currently expect amortization of stock-based compensation and litigation expenses to be generally consistent on a quarterly basis with the fourth quarter of 2006 through 2007. We also currently expect these legal costs to remain generally consistent on a quarterly basis through 2007. Also in the second half of 2006, we began to increase our investment in sales and marketing to increase market coverage and presence. This included increased sales and marketing headcount and increased spending on marketing programs.
 
Our income tax expense (benefit) was impacted in the second half of 2006 due to certain non-tax deductible expenses related to stock-based compensation. These expenses resulted in taxable income in the third and fourth quarter of 2006, as compared to a loss before taxes in our consolidated financial statements.
 
Our quarterly results of operations have varied in the past and are likely to do so again in the future. As such, we believe that period-to-period comparisons of our operating results should not be relied upon as an indication of future performance. In future periods, the market price of our common stock could decline if our revenue and results of operations are below the expectations of analysts and investors.
 
Liquidity and Capital Resources
 
To date, we have financed our operations primarily through private sales of common and preferred stock and subordinated notes, borrowings from financial institutions, and cash generated by our operations. As of December 31, 2006, our cash and cash equivalents totaled $7.6 million.
 
Operating Activities
 
Cash provided by operating activities increased $3.8 million to $6.3 million for the year ended December 31, 2006, compared to $2.5 million for the year ended December 31, 2005. Cash provided by operating activities increased by $0.9 million to $2.5 million for the year ended December 31, 2005, compared to $1.6 million for the year ended December 31, 2004. The increase in cash provided by operating activities for 2006 was primarily due to a net loss for the period of $3.7 million, offset by an increase in non-cash charges of depreciation and stock-based compensation of $19.7 million. The increase in 2005 related to an increase in depreciation and amortization, partially offset by a decrease in working capital. The increase in 2004 as compared to previous years was primarily due to changes in working capital. We expect that cash provided by operating activities will continue to increase as a result of an upward trend of net income. The timing and amount of future working capital changes and our ability to manage our days sales outstanding will also affect the future amount of cash used in or provided by operating activities.
 
Investing Activities
 
Cash used in investing activities increased $29.8 million to $40.6 million for the year ended December 31, 2006, compared to $10.9 million for the year ended December 31, 2005. Cash used in investing activities increased by $8.4 million to $10.9 million for the year ended December 31, 2005, compared to $2.5 million for the year ended December 31, 2004. Cash used in investing for all years represented capital expenditures primarily for computer equipment associated with the build-out and expansion of our content delivery network.
 
We expect to have significant ongoing capital expenditure requirements, as we continue to invest in and expand our content delivery network. We currently anticipate making aggregate capital expenditures of approximately $40.0 million to $50.0 million in each of 2007 and 2008.


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Financing Activities
 
Cash provided by financing activities increased $31.0 million to $40.4 million for the year ended December 31, 2006, compared to cash provided from financing activities of approximately $9.4 million for the year ended December 31, 2005. Cash provided by financing activities increased $8.0 million to $9.4 million for the year ended December 31, 2005, compared to $1.3 million for the year ended December 31, 2004. Cash provided by financing activities in 2006 reflects net proceeds from our July 2006 private equity transaction in which we recorded $126.3 million of net proceeds, as well as $12.2 million of net borrowings on our bank line. These amounts were offset by $102.1 million of share repurchases in 2006. Cash provided from financing activities in 2005 and 2004 were primarily from borrowing on our various debt financing lines.
 
Our credit facilities with Silicon Valley Bank provide up to $25.0 million in the form of a term loan and up to a $5.0 million revolving credit facility for working capital requirements. As of December 31, 2006, the balance outstanding under the term loan was approximately $23.8 million, and there was no balance outstanding under the revolving credit facility for working capital. The credit facility bears interest at a variable rate determined by using either the prime rate plus a margin or the LIBOR rate plus a margin, at our choice. The prime rate and LIBOR rate margins range from 0% to 1.5% or 2.0% to 3.25%, respectively, depending on our achievement of certain debt coverage ratios and the type of borrowing. The outstanding loan is secured by all of our tangible assets. The loan agreement contains financial and non-financial covenants, including maintaining a tangible net worth, as defined in the credit facility, of at least $30.0 million plus 50% of each quarter’s net income going forward. Through December 31, 2006, we were in compliance with all required covenants. We intend to use a portion of the net proceeds of this offering to repay the outstanding debt under this credit facility.
 
In connection with our Series B preferred stock financing in July 2006, an escrow account was established with an initial balance of approximately $10.2 million to serve as security for the indemnification obligations of our stockholders tendering shares in that financing. The escrow agreement specifies the procedure by which indemnified parties may make a claim against the escrow fund. Any amounts in escrow not paid in respect to claims for indemnification under the purchase agreement, and not subject to pending claims for indemnification, are to be released to the tendering stockholders upon the earliest to occur of (1) the eighteen month anniversary of the closing of the Series B preferred stock financing, (2) the closing of a liquidation as defined in our amended and restated certificate of incorporation or (3) the closing of this offering. Unless our lawsuit with Akamai and MIT settles prior to this offering, we expect to make a claim for the entire remaining amount of the escrow fund. As of March 1, 2007, the balance remaining in this escrow account totaled approximately $9.0 million.
 
We believe that our existing cash and cash equivalents and existing amounts available under our revolving credit facility, together with the net proceeds from this offering, will be sufficient to meet our anticipated cash needs for at least the next 12 months. If the assumptions underlying our business plan regarding future revenue and expenses change, or if unexpected opportunities or needs arise, we may seek to raise additional cash by selling equity or debt securities. If additional funds are raised through the issuance of equity or debt securities, these securities could have rights, preferences and privileges senior to those accruing to holders of common stock, and the terms of such debt could impose restrictions on our operations. The sale of additional equity or convertible debt securities would also result in additional dilution to our stockholders. In the event that additional financing is required from outside sources, we may not be able to raise it on terms acceptable to us or at all. If we are unable to raise additional capital when desired, our business, operating results and financial condition could be harmed.
 
Contractual Obligations, Contingent Liabilities and Commercial Commitments
 
In the normal course of business, we make certain long-term commitments for operating leases, primarily office facilities, bandwidth and computer rack space. These leases expire on various dates


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ranging from 2007 to 2011. We expect that the growth of our business will require us to continue to add to and increase our long-term commitments in 2007 and beyond. As a result of our growth strategies, we believe that our liquidity and capital resources requirements will grow in absolute dollars but will be generally consistent with that of historical periods on an annual basis as a percentage of net revenue.
 
The following table presents our contractual obligations and commercial commitments as of December 31, 2006 over the next five years and thereafter:
 
                                                 
          12
    13 to 24
    25 to 36
    36 to 48
       
    Total     Months     Months     Months     Months     Thereafter  
    (in thousands)  
 
Operating leases
                                               
Bandwidth leases
  $ 18,531     $ 11,207     $ 5,268     $ 1,886     $ 170        
Rack space leases
    5,097       3,930       966       199       2        
Real estate leases
    1,735       524       485       344       314       68  
                                                 
Total operating leases
    25,363       15,662       6,718       2,430       486       68  
Capital leases(1)
    277       272       5                          
Bank debt(1)
    23,818       2,938       5,293       5,293       5,293       5,001  
                                                 
Total commitments
  $ 49,458     $ 18,872     $ 12,016     $ 7,723     $ 5,779     $ 5,069  
                                                 
 
(1) Excludes interest payments on each obligation.
 
We intend to use a portion of the net proceeds of this offering to repay all of our obligations outstanding under our bank lines and capital leases.
 
We are currently engaged in litigation with Akamai and MIT in which we are alleged to be infringing three of their patents. We are not able at this time to estimate the range of potential loss nor do we believe that a loss is probable. Therefore, we have made no provision for this lawsuit in our financial statements.
 
Off Balance Sheet Arrangements
 
We do not have, and have never had, any relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities, which would have been established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes.
 
Non-GAAP Measures
 
In evaluating our business, we consider and use Adjusted EBITDA as a supplemental measure of our operating performance. We use EBITDA only to assist in reconciliation to Adjusted EBITDA. We define EBITDA as net income before net interest expense, provision for income taxes, depreciation and amortization. We define Adjusted EBITDA as EBITDA plus expenses that we do not consider reflective of our ongoing operations. We use Adjusted EBITDA as a supplemental measure to review and assess our operating performance. We also believe use of Adjusted EBITDA facilitates investors’ use of operating performance comparisons from period to period and company to company by backing out potential differences caused by variations in such items as capital structures (affecting relative interest expense and stock-based compensation expense), the book amortization of intangibles (affecting relative amortization expense), the age and book value of facilities and equipment (affecting relative depreciation expense) and other non cash expenses. We also present Adjusted EBITDA because we believe it is frequently used by securities analysts, investors and other interested parties as a measure of financial performance.
 
The terms EBITDA and Adjusted EBITDA are not defined under U.S. generally accepted accounting principles, or U.S. GAAP, and are not measures of operating income, operating


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performance or liquidity presented in accordance with U.S. GAAP. Our EBITDA and Adjusted EBITDA have limitations as analytical tools, and when assessing our operating performance, you should not consider EBITDA and Adjusted EBITDA in isolation, or as a substitute for net income (loss) or other consolidated income statement data prepared in accordance with U.S. GAAP. Some of these limitations include, but are not limited to:
 
  •  EBITDA and Adjusted EBITDA do not reflect our cash expenditures or future requirements for capital expenditures or contractual commitments;
 
  •  they do not reflect changes in, or cash requirements for, our working capital needs;
 
  •  they do not reflect the interest expense, or the cash requirements necessary to service interest or principal payments, on our debt;
 
  •  they do not reflect income taxes or the cash requirements for any tax payments;
 
  •  although depreciation and amortization are non-cash charges, the assets being depreciated and amortized often will have to be replaced in the future, and EBITDA and Adjusted EBITDA do not reflect any cash requirements for such replacements;
 
  •  while stock-based compensation is a component of operating expense, the impact on our financial statements compared to other companies can vary significantly due to such factors as assumed life of the options and assumed volatility of our common stock; and
 
  •  other companies may calculate EBITDA and Adjusted EBITDA differently than we do, limiting their usefulness as comparative measures.
 
We compensate for these limitations by relying primarily on our GAAP results and using Adjusted EBITDA only supplementally. EBITDA and Adjusted EBITDA are calculated as follows for the periods presented:
 
                         
   
Year Ended December 31,
 
    2004     2005     2006  
    (in thousands)  
 
Net income
  $ 516     $ 397     $ (3,713 )
Plus: depreciation and amortization
    844       2,951       10,542  
Plus: interest expense
    189       955       1,782  
Less: interest income
    (1 )           (208 )
Plus: income tax expense
    306       300       2,187  
                         
EBITDA
  $ 1,854     $ 4,603     $ 10,590  
Plus: stock-based compensation
    14       94       9,134  
Plus: litigation expenses recoverable from escrow(1)
                1,560  
                         
Adjusted EBITDA
  $ 1,868     $ 4,697     $ 21,284  
 
(1)  During 2006, we repurchased stock in a transaction with a total value of $102.1 million. Selling stockholders agreed to hold $10.2 million of the proceeds to offset specific claims for reimbursement associated with the Akamai lawsuit and other undisclosed obligations that may arise. During 2006, we had $1.6 million of litigation costs subject to reimbursement from this escrow.
 
Recent Accounting Pronouncements
 
In June 2006, the Financial Accounting Standards Board (FASB) issued Financial Interpretation No. (FIN) 48, Accounting for Uncertainty in Income Taxes, which clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements in accordance with FASB Statement No. 109, Accounting for Income Taxes. The interpretation prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. FIN 48 is effective for fiscal years beginning


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after December 15, 2006. We are currently reviewing our tax positions taken to determine the effect, if any, that the adoption of this Interpretation will have on our results of operations or financial condition.
 
In September 2006, the FASB issued SFAS No. 157, Fair Value Measurement (SFAS No. 157). SFAS No. 157 defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurements, but does not require any new fair value measurement. SFAS No. 157 is effective for fiscal years beginning after November 15, 2007 and interim periods within those fiscal years. We are in the process of determining the effect, if any, that the adoption of SFAS No. 157 will have on our consolidated financial statements. Because Statement No. 157 does not require any new fair value measurements or remeasurements of previously computed fair values, we do not believe the adoption of this Statement will have a material effect on our results of operations or financial condition.
 
On February 15, 2007, the FASB issued SFAS No. 159, The Fair Value Option for Financial Assets and Financial Liabilities (SFAS No. 159). Under this Standard, we may elect to report financial instruments and certain other items at fair value on a contract-by-contract basis with changes in value reported in earnings. This election is irrevocable. SFAS No. 159 provides an opportunity to mitigate volatility in reported earnings that is caused by measuring hedged assets and liabilities that were previously required to use a different accounting method than the related hedging contracts when the complex provisions of SFAS No. 133 hedge accounting are not met. SFAS No. 159 is effective for years beginning after November 15, 2007. Early adoption within 120 days of the beginning of our 2007 fiscal year is permissible, provided we have not yet issued interim financial statement for 2007 and have adopted SFAS No. 157. We are currently evaluating the potential impact of adopting this Standard.
 
Quantitative and Qualitative Disclosures About Market Risk
 
Interest Rate Risk
 
Our exposure to market risk for changes in interest rates relates primarily to our debt and investment portfolio. In our investment portfolio, we do not use derivative financial instruments. Our investments are primarily with our commercial bank and, by policy, we limit the amount of risk by investing primarily in money market funds, United States Treasury obligations, high-quality corporate and municipal obligations and certificates of deposit. We do not believe that a 10% change in interest rates would have a significant impact on our interest income, operating results or liquidity.
 
Foreign Currency Risk
 
Substantially all of our customer agreements are denominated in U.S. dollars, and therefore our revenue are not subject to foreign currency risk. Because we have operations in Europe and Asia, however, we may be exposed to fluctuations in foreign exchange rates with respect to certain operating expenses and cash flows. Additionally, we may continue to expand our operations globally and sell to customers in foreign locations, potentially with customer agreements denominated in foreign currencies, which may increase our exposure to foreign exchange fluctuations. At this time, we do not have any foreign hedge contracts because exchange rate fluctuations have had little or no impact on our operating results and cash flows.
 
Inflation Risk
 
We do not believe that inflation has had a material effect on our business, financial condition or results of operations. If our costs were to become subject to significant inflationary pressures, we may not be able to fully offset such higher costs through price increases. Our inability or failure to do so could harm our business, financial condition and results of operations.


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BUSINESS
 
Overview
 
Limelight Networks is a leading provider of high-performance content delivery network services. We digitally deliver content for traditional and emerging media companies, or content providers, including businesses operating in the television, music, radio, newspaper, magazine, movie, videogame and software industries. Using Limelight’s content delivery network, or CDN, content providers are able to provide their end-users with a high-quality media experience for rich media content including video, music, games, software and social media. As consumer demand for media content over the Internet has increased, and as enabling technologies such as broadband access to the Internet have proliferated, consumption of rich media content has become increasingly important to Internet end-users and therefore to the content providers that serve them. We developed our services and architected our network specifically to meet the unique demands content providers face in delivering rich media content to large audiences of demanding Internet end-users. Our comprehensive solution delivers content providers a high-quality, highly scalable, highly reliable offering at a low cost. As of February 2007, over 700 customers have chosen Limelight Networks to deliver the high-quality media experiences their consumers seek online.
 
We are rapidly growing our content delivery capacity and expanding our sales and service capabilities in advance of what we believe will be a dramatic and sustained surge in Internet traffic. The environment in which we are scaling our business is characterized by three macro trends, all of which reinforce the need for content delivery networks:
 
  •  consumption and distribution of rich media content are expanding rapidly;
 
  •  older alternatives for delivering rich media content over basic Internet connections are not scaling well; and
 
  •  a new set of technical, management and economic requirements have emerged for content providers to meet the needs of demanding consumers of rich media content.
 
Consumption and Distribution of Rich Media Content Expanding
 
Multiple forces have created, and continue to drive, a substantial unmet need to rapidly and efficiently deliver large files and broadcast-quality media to large audiences over the Internet. These forces include the following:
 
  •  Proliferation of broadband Internet connections.  According to a report from Strategy Analytics, nearly half of all U.S. households had broadband Internet access in 2006, with broadband Internet penetration expected to reach 73% by 2010. In addition, IDC estimates that the average speed of downstream access for a broadband connection, the speed at which an end-user accesses media files, doubled from the third quarter of 2004 to the same quarter of 2006 (“Market Analysis: U.S. Broadband Services 2006-2010 Forecast,” IDC, September 2006). The proliferation of broadband Internet connections has provided an increasing number of users with the capability to access rich media content efficiently.
 
  •  Consumption of media via the Internet is rivaling consumption via other media channels.  The proliferation of broadband Internet has fundamentally changed the way that consumers access and interact with media content. According to Forrester Research, Inc., consumers between the ages of 18-26 spend approximately 12 hours per week using the Internet, compared to approximately 10.5 hours per week watching television (“State of the Consumers and Technology: Benchmark 2006,” Forrester Research, Inc., July 2006). In addition, eMarketer estimates that at the end of 2006, nearly 60% of all Internet users regularly watched videos online. That number is expected to climb to 80% by the end of 2010.
 
  •  Consumers desire on-demand access to a broad range of personalized media content.  Through technologies like Internet search, personal digital video recorders, video-on-demand


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  and social media platforms, consumers are increasingly accustomed to immediate, on-demand access to media content, including videos, music and photos provided by media or content providers or by users themselves.
 
  •  Proliferation of Internet-connected devices.  The proliferation of devices that are capable of connecting to the Internet, such as MP3 players, mobile phones and videogame consoles, has given users even more control and flexibility over how and where they access and use media content from the Internet.
 
Content providers have recognized this evolving shift in consumer behavior and the consumption of rich digital media. Television, music, radio, newspaper, magazine, movie, videogame, software and other traditional and emerging media companies all have or are developing large libraries of rich media and video content. The broad reach provided by the Internet allows these content providers to distribute their content through content aggregators or directly to consumers. The Internet also enables content providers to offer their entire content libraries to consumers. As a result, content providers are able to monetize a much larger portion of their media content libraries than has been possible under offline, non-Internet modes of distribution.
 
Alternatives for Delivering Rich Media Content over the Internet
 
Companies looking to deliver rich media content to users via the Internet have two primary alternatives: deliver content using basic Internet connectivity, in some cases with significant investment in additional infrastructure, or utilize a CDN.
 
Content Delivery via Basic Internet Connectivity
 
Basic Internet connectivity is capable of delivering media content to users, but is ill-suited for delivering the large media files and broadcast-quality media that are commonplace today. The Internet is a complex network of networks that was designed principally to connect every Internet network point to every other Internet network point via multiple, redundant paths. To reach a given user, content from a provider’s website must normally traverse multiple networks. These networks include those of the website’s Internet service provider, or ISP, one or more Internet backbone carriers — each of which provides a network of high-speed communication lines between major interconnection points — and the user’s ISP. At any point along this path, data packets associated with the website’s content can be lost or delayed, impeding the transfer of data to the user. Internet protocols are designed to reliably transport data packets, but are not designed to ensure end-to-end performance. These protocols are effective for delivery of most types of traditional content, but are often ineffective for delivery of rich media content. When data packets are lost or delayed during the delivery of rich media content, the result is noticeable to users because playback is interrupted. This interruption causes songs to skip, videos to freeze and downloads to be slower than acceptable for demanding consumers. This lack of performance and its dramatic effect on user experience make the delivery of rich media content via the basic Internet extremely challenging.
 
In response, some content providers have chosen to invest significant capital to build the infrastructure of servers, storage and networks necessary to bypass, as much as possible, the public Internet. This substantial capital outlay and the development of the expertise and other technical resources required to manage such a complex infrastructure can be time-consuming and prohibitively expensive for all but the largest of companies.
 
Content Delivery via Content Delivery Networks
 
A content delivery network, or CDN, offloads the delivery of content from a media provider’s central website infrastructure to the CDN’s service delivery infrastructure. In general, the infrastructure of a CDN is composed of hundreds or thousands of servers distributed at various points around the Internet, linked together by software that controls where media content objects are stored and how they should be delivered to end-users. Deploying content objects in numerous, distributed locations


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can reduce the network distance between users and the media content they seek, reducing the potential for performance-inhibiting network congestion. The architecture of early CDNs reflected the importance and prevalence, at the time, of web page objects such as photos and graphics. Early CDNs typically deployed small server clusters in a large number of locations, relied on the public Internet to connect the clusters, and stored only the most popular content objects in their local caches, which are computing resources used to store frequently accessed data for rapid access. Because each server cluster was small, with few servers available for the storage and delivery of content, and with rarely more than a single network connection, some early CDNs employed optimization algorithms in an effort to effectively manage and allocate these relatively scarce resources.
 
When a requested content object is unavailable on the server cluster, a cache miss, which is a failed attempt to acquire a requested content object in a local cache, occurs. To handle a cache miss, early CDNs were required to access the missing object over the Internet from the content provider’s servers. A cache miss, and the time required to obtain the missing object over the Internet, degrades the end-user’s experience and increases the computing resource cost of servicing the end-user’s request. As the consumption of rich media has grown, the requirement to cache a sufficient number of media objects to guarantee a high-quality end-user experience at an efficient price has strained the architecture of early CDNs.
 
The New Requirements for Delivering Rich Media Content
 
We believe the unique characteristics of rich media content delivery and the rapid growth of rich media consumption have created a new set of technical, management and economic requirements for businesses seeking to deliver rich media content. These requirements include the following:
 
  •  Delivering a consistently high-quality media experience.  User experience is critical for content providers because consumers increasingly expect a high-quality experience, will not tolerate interruptions or inconsistency in the delivery of content, and may never return to a particular media provider if that provider is unable to meet their expectations. A media stream, for example, should begin immediately and play continuously without interruption every time a customer accesses that stream.
 
  •  Delivering expansive content libraries of rich media.  Consumers, particularly those who are accustomed to broadband-enabled Internet services such as high-quality television and radio, increasingly demand the ability to consume any form of media content online. To meet this demand, traditional media companies are moving their enormous libraries of content, such as television shows and movies, online. At the same time, emerging content businesses, such as user-generated content companies, are creating expansive libraries of rich media. Users expect a consistent media experience across every title in these large libraries, for each title regardless of its popularity, each time it is viewed.
 
  •  Ability to scale content delivery capacity to handle rapidly accelerating demand and diversity of audience interest.  Content providers also need to scale delivery of their content smoothly as the size of their audience increases. When a large number of users simultaneously access a particular website, the content provider must be able to meet that surge in demand without making users wait. Rapidly accelerating demand can be related to a single event, such as a major news or sporting event, or can be spread across an entire library of content, such as when a social media website surges in popularity.
 
  •  Reliability.  Throughout the path data must traverse to reach a user, problems with the underlying infrastructure supporting the Internet can occur. For instance, servers can fail, or network connections can drop. Avoiding these problems is important to content providers because network, datacenter, or service provider outages can mean frustrated users, lost audiences and missed revenue opportunities.


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  •  Flexibility and manageability.  Content providers are making significant investments in preparing their media libraries for delivery over the Internet. Once content is ready for Internet distribution, content providers must be able to support a wide range of formats, begin to distribute their content quickly, and monitor their delivery activities.
 
  •  Managing delivery costs.  Managing the cost of content delivery is important for content providers so that they can maximize profits. As a result, the combination of major capital outlays and operating expenditures required to build and maintain large server clusters, peak period capacity, extensive Internet backbone networks and multiple connections to global broadband access networks is simply not practical for most companies. As users increasingly demand access to large files and media streams, the infrastructure costs associated with providing this content are rising.
 
The capital, expertise, and other managerial effort necessary to meet these requirements can be challenging. As demand for the delivery of rich media content increases, these challenges will become increasingly difficult to meet. We believe, therefore, that there is a significant opportunity for an outsourced Internet content delivery network optimized for the delivery of rich media content.
 
The Limelight Networks Solution for Rich Media Content Delivery
 
We are a leading provider of content delivery services for digital media content including video, music, games, software and social media. We designed our delivery solution specifically to handle the demanding requirements of delivering rich media content over the Internet. Our solution enables content providers and aggregators to provide their end-users with high-quality experiences across any media type, library size, or audience scale without expending the capital and developing the expertise needed to build out and manage their own networks.
 
In designing and building our content delivery network, we built and deployed a globally-distributed network of thousands of servers specially configured for the delivery of rich media content with the following design advantages:
 
Densely-Configured, High-Capacity Architecture.  Our network infrastructure consists of dense clusters of specially-configured servers organized into large, logical CDN locations. The extensive storage capacity of these logical CDN locations leads to fewer cache misses than would occur in an early CDN architecture and provides maximum scalability and responsiveness to surges in end-user demand.
 
Many Connections to Other Networks.  Our logical CDN locations are directly connected to hundreds of user access networks, which are computer networks connected to end-users. In addition, for dedicated connectivity between our logical CDN locations, we lease our own private optical backbone and metro area networks. Lastly, our infrastructure has multiple connections to the Internet. In combination, these connections enable us to frequently bypass the often-congested public Internet, improving the speed of content delivery.
 
Intelligent Software to Manage the Network.  We have developed proprietary software that manages our content delivery system. This software intelligently manages the delivery of content objects, storage and retrieval of customer content libraries, activity logging and information reporting.
 
Flexibility to Meet Varying Customer Demands.  We handle both download and streaming deliveries, and do so across what we believe is one of the broadest range of formats in our industry, including Adobe Flash, MP3 audio, QuickTime, RealNetworks RealPlayer and Windows Media.
 
All of the elements of our network work seamlessly together. Content providers upload content either directly to us or to their own servers, which are connected directly to our network. Upon request from an end-user, we distribute that content to one or more massive storage server clusters which feed hundreds of specially configured servers at each content delivery location around the world. The content is then delivered directly to end-users through our relationships with over 600 broadband


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Internet service providers, or over the public Internet if appropriate. Our customers compensate us for this service by paying us on a per-gigabyte basis, or on a variable basis based on peak delivery rate for a fixed period of time, as our services are used.
 
Key Benefits of the Limelight Networks Solution
 
Our content delivery network architecture and service offering were designed and built specifically to meet the demands of rich media content delivery. We are able to deliver the following customer benefits:
 
   High Quality User Experience
 
We enable users to receive their requested content such as software or movie downloads in a timely manner and to enjoy a high-quality media experience when watching a television show or playing a video game online. We accomplish this, in part, by delivering content from servers that can be closer to users than a content provider’s own servers, and by delivering more than half of our content volume directly to a user’s access network, bypassing much of the congestion typically experienced in the public Internet. We also operate a dedicated high-speed (10 gigabits per second) backbone which enables us to move content quickly between locations on our network.
 
   High Scalability Across Media Type, Library Size, and Audience Size
 
We have built a global network of logical CDN locations with extensive storage capacity across the United States, Europe, and Asia that enables us to rapidly deliver digital media worldwide. Each of our logical CDN locations hold a substantial amount of computing power and storage capacity. Our current global delivery capability exceeds 1 terabit per second. This capacity allows us to support traffic spikes associated with special one-time or unexpected events. Our highly scalable infrastructure also enables us to maintain our performance levels as our customers’ audiences grow, media file sizes increase, and content libraries expand.
 
   High Reliability
 
Our distributed CDN architecture, managed by our proprietary software, seamlessly and automatically responds in real time to network and datacenter outages. Each of our content delivery network locations connects to multiple Internet backbone and broadband Internet service provider networks, and has multiple redundant servers, enabling us to continue serving content even if a particular network connection or server fails. Automatic failover and recovery not only provide uninterrupted customer service but also simplify network maintenance and upgrades.
 
   Comprehensive Solution
 
We provide an integrated solution focused on ease of implementation and management to address our customers’ full delivery needs. We can begin delivery services for a new customer within days of a customer’s placing an order. We also support both download and streaming delivery in a broad variety of formats including Adobe Flash, MP3 audio, QuickTime, RealNetworks RealPlayer and Windows Media. In addition, our value-added services include a web-based customer portal that provides management information reports and a download manager that simplifies the downloading process for the end-user. Lastly, we offer custom services to address customers’ non-standard delivery needs.
 
   Low Content Delivery Costs
 
Our content delivery services enable customers to avoid the substantial upfront and ongoing capital requirements of upgrading and maintaining their datacenters and networks in order to deliver media content themselves. Customers benefit from the lower cost associated with the delivery of content using our infrastructure, which is designed specifically for delivering rich media content, and


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the expertise we have acquired from serving over 700 customers. Our customers pay for the traffic we deliver for them, and they have the flexibility to purchase additional delivery capacity at any time to support their changing business needs.
 
Our Strategy
 
Our strategic goal is to enhance our position as a leading provider of content delivery services for digital media content. Key elements of our strategy include:
 
   Continue to Focus on Customers with Media Content
 
Our core set of customers are traditional and emerging media companies, including businesses operating in the television, music, radio, newspaper, magazine, movie, videogame and software industries. We intend to continue to focus on this group as we believe it represents a stable and growing business opportunity. There has been rapid growth of rich media content delivered over the Internet in recent years, and we believe that the market will continue to experience robust growth.
 
   Expand Content Delivery Network Infrastructure to Serve New Markets
 
While the market for online rich media content delivery in the United States is still in its early, growth stage, we believe there are also significant growth opportunities abroad. We plan to expand our content delivery network reach and increase the processing power, storage and connectivity of our existing CDN locations in order to continue our expansion into key international markets, including Europe and the Asia Pacific region.
 
   Continue to Innovate
 
Our innovative content delivery infrastructure is a primary driver of our success in the CDN market. Customer requirements will continue to advance, however, and competitors will not stand still. As a result, we intend to continue investing in our technology and network to improve our capabilities further. Doing so will enable us to handle even larger file sizes and customer content libraries, as well as increasingly demanding delivery methods and file formats, beyond what we currently handle. We plan to continue working with some of the most sophisticated and demanding CDN customers in the world to help define and drive our research and development priorities.
 
   Expand Contact Delivery Network Capacity to Further Scale Advantage
 
Continued investment in the physical assets that comprise our network will strengthen the positive reinforcing dynamic that currently exists in our business. This dynamic begins with the media delivery performance we achieve via our infrastructure. Today, because our content delivery architecture excels at delivering rich media, we attract a significant number of CDN customers and a significant amount of CDN traffic. Our customers and traffic volumes make us an attractive partner for broadband access networks seeking direct connections to improve the Internet experiences of their end-users. More and higher-capacity direct connections with broadband access networks further enhance the performance of our infrastructure, thereby attracting additional customers and additional traffic, which then spurs more and faster direct connections with broadband access networks. We refer to this self-reinforcing cycle as the “backroom network effect.”
 
   Enhance Our Distribution Capabilities
 
We intend to expand our direct and indirect sales and distribution channels to broaden our customer relationships as well as deepen our penetration of existing customer accounts. We plan to continue hiring, adding to both our domestic and international sales and management teams. Our international hiring efforts will be focused, initially, on Europe and Asia, and then will transition to other geographies. In addition to building upon our strong relationships with current partners, we intend to


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form new ties with third-party distribution partners in order to complement our direct sales efforts. Enhancing our distribution capabilities will also help us address additional industry verticals.
 
   Continue to Meet Customer Needs with Enhanced Services
 
We intend to enhance our existing standard offerings with value-added services closely related to our core media content delivery capability. We plan to develop these services both internally and through collaboration with our growing list of strategic partners. We may also elect to acquire technologies or services that will enhance our value proposition to customers.
 
   Expand Our Partner Relationships
 
Limelight’s leadership position in the industry has attracted a list of partners that use our network to enhance their own service offerings. Additionally, these partners offer services that complement our core offerings. These partner services include digital rights management, content management systems, advertising insertion, content encoding and transcoding, e-commerce systems, and managed hosting. We intend to continue to strengthen our existing relationships with these partners, as well as to develop additional relationships.
 
Services
 
Our services are purpose-built for the delivery of digital media to large, global audiences. Our primary services are the following:
 
  •  Limelight Networks Content Delivery (HTTP/Web delivery);
 
  •  Limelight Networks Streaming Media (Streaming delivery); and
 
  •  Limelight Networks Custom CDN.
 
A customer typically chooses Content Delivery for digital media files, such as purchased movies and games, which are destined to reside, either permanently or for some period of time, on a user’s computer or other device. A customer typically chooses Streaming Media for live events, Internet radio services, and other content that is not intended to reside on the user’s device for even a short period of time. A customer typically chooses Custom CDN if it has one or more unique requirements that are not commonly supported by CDNs, such as the need to execute proprietary software from the edge servers of the CDN. In many cases, a customer will choose more than one of these services, utilizing different services for different content types or services.
 
   Limelight Networks Content Delivery and Streaming Media
 
Limelight Networks Content Delivery provides HTTP/web distribution of digital media files such as video, music, games, software and social media.
 
Limelight Networks Streaming Media provides on-demand and/or live streaming for all major formats including Adobe Flash, MP3 audio, QuickTime, RealNetworks RealPlayer and Windows Media. When media files are streamed to an end-user, the files are not stored on the user’s computer, but rather are received directly and played by the user’s media player software in real-time.
 
The following are additional chargeable options for customers of our Content Delivery and Streaming Media services:
 
  •  LUX.  Web-based management and reporting console that allows customers to manage their provisioned Limelight services, as well as monitor usage, activity, and delivery metrics via customizable CDN reporting.
 
  •  StorageEdge.  Service option for storing a customer’s content library within our CDN architecture, ensuring consistent, high-quality delivery of every file, from the most to the least popular, across the customer’s entire library.


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  •  Download Manager.  Client-deployed software for managing downloads that enables end-users to download multiple objects with one click.
 
  •  Traffic Services Manager.  Service management option that allows our customers to designate and control traffic requests divided among multiple service delivery infrastructures, including Limelight Networks, providing the customer an easy way to manage network redundancy among internal and externally-provisioned delivery infrastructures.
 
  •  Geo-Compliance.  Content rights compliance offering that allows our customer to define the specific geographic location of a user prior to fulfilling the user’s content request, allowing the content provider to manage geographic restrictions for licensed content distribution.
 
  •  MediaVault.  Security offering for Content Delivery and Streaming Media customers that securely associates digital media or stream locations (URLs) with authorized viewers, protecting content from access by unauthorized users.
 
  •  Content Control.  Performance management offering for Content Delivery that allows our customers to manage costs by limiting the speed of digital media deliveries to their end-users.
 
  •  Log Access.  Access to an aggregated set of detailed activity logs (on-demand or live), allowing our customers to access detailed content and user information from our edge delivery servers.
 
  •  API.  Programmatic interface to Limelight services and reporting which allows a customer’s applications to directly access and pull information into their systems, as well as directly manage Limelight services as part of the customer’s application interface and workflow.
 
Limelight Networks Custom CDN
 
Limelight Networks Custom CDN provides customized content delivery deployments and solutions, built with some or all of our standard CDN components, but in a configuration unique to the customer. A typical Custom CDN solution includes specific servers and related resources dedicated to a particular customer so that custom applications or services may be placed on our network along with the customer’s digital media content, Limelight CDN connectivity for scalable delivery and Limelight professional services for implementing and managing the solution.
 
Complementary Partner Services
 
As a leader in the industry, Limelight has attracted a list of partners that use our network to enhance their own service offerings. Additionally, these partners offer services that complement our core offerings. These partner services include digital rights management, content management systems, advertising insertion, content encoding and transcoding, e-commerce systems and managed hosting.
 
Technology
 
We have developed an innovative system for Internet-based delivery of digital media, based on a content delivery network built specifically for large media files, high bit-rate media streams, expanding content libraries and global audiences. This system and technology platform has the following key elements:
 
Globally-Deployed Servers
 
  •  We have built and deployed a globally distributed network of more than 4,000 servers specially configured for the delivery of rich media content at 52 points of presence, or POPs, and 16 logical CDN locations, or a group of POPs, in the U.S., Europe and Asia. Content consumers can connect to Limelight servers that are closer to them, in network terms, than a content provider’s own servers, eliminating much of the Internet congestion and inconsistent network


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  performance that could affect the delivery of content. This reduces or eliminates the visible symptoms of poor Internet performance, including slow start times and stopping or skipping during playback.
 
Densely-Configured, High-Capacity Architecture
 
  •  Our architecture consists of dense clusters of specially-configured edge servers and storage servers deployed at each POP. A logical CDN location is provisioned with hundreds of edge servers, which users connect to and which store our customers’ most popular content files. A logical CDN location also contains one or more intermediate storage systems, which act as large, deep media file caches and store less frequently requested content files. When an edge server in the logical CDN location needs a file that it does not have, it can often retrieve that object from the intermediate storage system, rather than from a customer’s website servers or from another location in our system. These retrievals from intermediate storage systems are very fast, because they occur across a local area or metro area ethernet network, rather than across our backbone or across the public Internet. This architecture enables us to maximize the amount of content stored at each CDN location without requiring that we store every content file on every edge server.
 
  •  We have configured each of our CDN locations to connect with hundreds of networks. They are also equipped with the capacity to support additional network connections as needed. This design allows us to provide maximum scalability and responsiveness as end-user demand increases. In addition, any server within a CDN location can send and receive data via any network at that location. This “any-to-any” capability allows us to use our network connections to the greatest extent possible, without having to simultaneously optimize servers and networks, as some CDNs do. Each of our edge servers has access to whichever locally-attached network is best for each delivery.
 
Connectivity
 
  •  In aggregate, our logical CDN locations are directly connected to more than 600 broadband Internet access networks around the world. Whenever possible, we use these interconnections to place content objects directly on users’ access networks, which means those users’ requested files reach them without ever traversing the public Internet. We believe that there is no faster method available for delivering content to a user. More than half of our total content delivery volume is delivered in this fashion.
 
  •  When we are not connected directly to the user’s broadband Internet access provider, we use commercial Internet carriers to deliver content objects to the user’s broadband provider. We maintain commercial relationships with many of the world’s largest Internet carriers, including Deutsche Telecom, France Telecom and Global Crossing, with multiple commercial Internet carrier connections at each of our CDN locations.
 
  •  Our CDN locations in the United States and Europe are connected together via a dedicated optical backbone, which we operate, that includes redundant 10 gigabit per second connections to every location. Our logical CDN locations in Asia are connected to our U.S./Europe network via managed circuits. By connecting all of our locations with a network infrastructure that we operate and on which we manage the traffic flows (rather than relying on the often-congested public Internet), we are able to rapidly move objects around our network when needed to service user requests. Also, using our own network, rather than relying on the public Internet, means that the stream our edge server acquires will be as high-quality as the stream we receive from our customer.


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Intelligence
 
  •  We have developed proprietary software that manages our content delivery system. This software consists of several components:
 
  —  Edge server software for managing download and streaming delivery of content objects;
 
  —  Software for assigning resources within our infrastructure and for systematically improving our infrastructure over time as our customers and infrastructure components change;
 
  —  Intermediate cache server systems and software for storing customer content libraries; and
 
  —  Customer portal and customer reporting software.
 
Flexibility
 
  •  Using our proprietary edge server software, we handle both download and streaming deliveries across what we believe is one of the broadest range of formats in our industry, including Adobe Flash, MP3 audio, QuickTime, RealNetworks RealPlayer and Windows Media.
 
Customers
 
Our core set of customers are media companies and other providers of online media content. As of March 1, 2007, we had over 700 customers worldwide, including many top names in the fields of video, digital music, new media, games, rich media applications and software delivery. Based on 2006 revenue, our largest customers in each of these fields included:
 
 
  •  Video:  MSNBC, Viacom.
 
  •  Music:  RadioIO, ABC Radio.
 
  •  Games:  Microsoft (XBOX), Valve Corporation.
 
  •  Software:  Microsoft, Adobe Systems.
 
  •  Social Media:  MySpace.
 
One customer, CDN Consulting, which acted as a reseller of our services primarily to a single large content provider, accounted for more than 10% of our revenue in 2006. Prospectively, we do not expect sales to this reseller to continue at comparable levels. No customer accounted for more than 10% of our revenue in 2005, and one customer, MusicMatch, accounted for more than 10% of our revenue in 2004.
 
Competition
 
The content delivery network market is highly competitive and is characterized by multiple types of vendors offering varying combinations of computing and bandwidth to content providers. Many of our current competitors, as well as a number of our potential competitors, have longer operating histories, greater name recognition, broader customer relationships and industry alliances, and substantially greater financial, technical and marketing resources than we do. Our primary competitors include content delivery service providers such as Akamai Technologies, Inc., or Akamai, Level 3 Communications, which recently acquired SAVVIS Communications’ CDN services business, Digital Island, and Internap Network Services Corporation, which recently acquired VitalStream. Also, as a result of the growth of the content delivery market, a number of companies are currently attempting to enter our market, either directly or indirectly, some of which may become significant competitors in the future. Internationally, we compete with local content delivery service providers, many of which are very well positioned within their local markets.


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We believe that the principal competitive factors affecting the content delivery market include such attributes as:
 
  •  Performance, as measured by file delivery time and end-user media consumption rates;
 
  •  Scalability;
 
  •  Proprietary software designed to efficiently locate and deliver large media files;
 
  •  Ease of implementation;
 
  •  Flexibility in designing delivery systems for unique content types and mixes;
 
  •  Reliability; and
 
  •  Cost efficiency.
 
While many of our current competitors, as well as a number of our potential competitors, have longer operating histories, greater name recognition and greater financial, technical and marketing resources than we do, we believe that we compete favorably on the basis of these factors, taken as a whole. In particular, we believe that our service offerings compete strongly in the areas of performance and scalability, which are two of the most critical elements involved in the delivery of rich media content over the Internet, and in the area of cost efficiency.
 
Research and Development
 
Our research and development organization is responsible for the design, development, testing and certification of the software, hardware and network architecture of our content delivery network system. As of March 1, 2007, we had 15 employees in our research and development group, substantially all of whom were located at our headquarters in Tempe, Arizona. Our engineering efforts support product development across all major types of rich media content, including videos, music, games, software and social media, in various file formats and protocols such as Adobe Flash, MP3 audio, QuickTime, RealNetworks RealPlayer and Windows Media. We test our system to ensure scalability in times of peak media demand. We use internally-developed and third-party software to monitor and to track the performance of our network in the major Internet consumer markets around the world where we provide services for our customers. Our research and development expenses were approximately $0.2 million in 2004, $0.5 million in 2005 and $3.2 million in 2006, including stock-based compensation expense of $1.7 million in 2006. We believe that the investments that we have made in research and development have been effectively utilized. In the future, we anticipate that our research and development expenditures will increase as a percentage of our revenue as we grow our business.
 
Sales and Marketing
 
We sell our services directly through our telesales and field sales forces. We also have customers who incorporate our services into their offerings and function as resellers, as well as other distribution partners. We target media companies and other providers of online media content through our:
 
  •  Telesales force.  Our telesales force is responsible for managing direct sales opportunities within the mid-market within North America.
 
  •  Field sales force.  In October 2006, we began to develop a field sales force and have since hired 11 sales personnel in various geographic markets. This sales force is responsible for managing direct sales opportunities in major accounts in North America, Europe and the Asia Pacific region.


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  •  Distribution partners.  We have certain customers who incorporate our services into their offerings, and we also maintain relationships with a number of resellers and distribution partners.
 
We focus our marketing efforts on increasing brand awareness, communicating product advantages and generating qualified leads for our sales force and resellers. We rely on a variety of marketing vehicles, including trade shows, advertising, public relations, webinars, our website and collaborative relationships with technology vendors.
 
We intend to expand our current sales and marketing organization in additional international territories.
 
Intellectual Property
 
Our success depends in part upon our ability to protect our core technology and other intellectual capital. To accomplish this, we rely on a combination of intellectual property rights, including patents, trade secrets, copyrights, trademarks, domain registrations and contractual protections.
 
We have 14 patent applications pending in the United States. We also have 36 regional or national patent applications pending in foreign countries and five patent applications filed under the Patent Cooperation Treaty awaiting possible entry into the regional or national phase. We do not currently have any issued patents, and we do not know whether any of our patent applications will result in the issuance of a patent or whether the examination process will require us to narrow our claims. Any patents that may be issued to us may be contested, circumvented, found unenforceable or invalidated, and we may not be able to prevent third parties from infringing them. Therefore, we cannot predict the exact effect of having a patent with certainty.
 
We have five pending trademark applications in the United States. Our name, Limelight Networks, has been filed for multiple classes in the United States, Australia, Canada, the European Union, India, Japan, South Korea and Singapore. Three of the non-U.S. trademark applications have issued. There is a risk that pending trademark applications may not issue, and that those trademarks that have issued may be challenged by others who believe they have superior rights to the marks.
 
We generally control access to and use of our proprietary software and other confidential information through the use of internal and external controls, including physical and electronic security; contractual protections with employees, contractors, customers and partners; and domestic and foreign copyright laws.
 
Despite our efforts to protect our trade secrets and proprietary rights through intellectual property rights and licenses and confidentiality agreements, there is risk that unauthorized parties may still copy or otherwise obtain and use our software and technology. In addition, we intend to expand our international operations, and effective patent, copyright, trademark and trade secret protection may not be available or may be limited in foreign countries. Further, expansion of our business with additional employees, locations and legal jurisdictions may create greater risk that our trade secrets and proprietary rights will be harmed. If we fail to effectively protect our intellectual property and other proprietary rights, our business could be harmed.
 
Third parties could claim that our products or technologies infringe their proprietary rights. The Internet content delivery industry is characterized by the existence of a large number of patents, trademarks, and copyrights and by frequent litigation based on allegations of infringement or other violations of intellectual property rights. We expect that infringement claims may further increase as the number of products, services, and competitors in our market increases. Further, continued success in this market may provide an impetus to those who might use intellectual property litigation as a weapon against us. As described under “Legal Proceedings” below, we are currently party to a lawsuit in which Akamai and the Massachusetts Institute of Technology, or MIT, allege that we are infringing three patents assigned to MIT and exclusively licensed by MIT to Akamai. The outcome of this or any other litigation is inherently unpredictable. In addition, to the extent that we gain greater


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visibility and market exposure as a public company, we are likely to face a higher risk of being the subject of intellectual property infringement claims from other third parties.
 
Legal Proceedings
 
In June 2006, Akamai and MIT filed a lawsuit against us in the U.S. District Court for the District of Massachusetts alleging that we are infringing two patents assigned to MIT and exclusively licensed by MIT to Akamai. In September 2006, Akamai and MIT expanded their claims to assert infringement of a third patent. These two matters have been consolidated by the Court. In addition to monetary relief, including treble damages, interest, fees and costs, the consolidated complaint seeks an order permanently enjoining us from conducting our business in a manner that infringes the relevant patents. A permanent injunction could prevent us from operating our CDN altogether. The Court has set a claims construction hearing, known as a Markman hearing, for May 2007. Although the Court has not set a trial date, based on the schedule currently in place, we believe it is likely that the case will go to trial in 2008.
 
Akamai and MIT have asserted two of the patents at issue in the current litigation in two previous lawsuits against different defendants. Both cases were filed in the same district court as the current action, and assigned to the same judge currently presiding over the lawsuit filed against us. In one case, a portion of one of these patents was upheld but neither lawsuit resulted in the defendant being able to obtain a license from Akamai or MIT, nor did the lawsuits result in a settlement. In addition, Akamai acquired the defendant prior to final resolution of the lawsuit in one of these cases.
 
While we believe that the claims asserted by Akamai and MIT are without merit and intend to vigorously defend the action, we cannot assure you that this lawsuit ultimately will be resolved in our favor. An adverse ruling could seriously impact our ability to conduct our business and to offer our products and services to our customers. This, in turn, would harm our revenue, market share, reputation, liquidity and overall financial position.
 
From time to time, we may become involved in legal proceedings arising in the ordinary course of our business. Other than the patent litigation filed against us by Akamai and MIT, we are not presently a party to any material legal proceedings.
 
Employees
 
As of March 1, 2007, we had 158 employees, including 81 in sales and marketing, 47 in network engineering and operations, 15 in research and development and 15 in general and administrative. Of these employees, 154 are based in the United States and four are based in the United Kingdom. In addition, we have one sales and marketing consultant based in Singapore. We consider our current relationship with our employees to be good. None of our employees is represented by a labor union or is a party to a collective bargaining agreement.
 
Facilities
 
We lease approximately 7,529 square feet and 13,341 square feet of space in our two headquarters buildings in Tempe, Arizona under leases that expire in 2009 and 2010, respectively. We also lease approximately 8,224 square feet of space for a data center in Phoenix, Arizona under a lease that expires in 2010. We believe we will need additional space before this time, and we have ample options in the local area to expand our use of facilities space. We also lease space for our field personnel in various locations in the United States and Europe. Additionally, we lease substantial data center space in approximately 50 computing centers around the world from market-leading co-location vendors such as Equinix and Switch and Data.


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MANAGEMENT
 
Executive Officers, Directors and Key Employees
 
Our executive officers, directors and key employees, and their ages and positions as of March 20, 2007 are as follows:
 
             
Name
 
Age
 
Position
 
Jeffrey W. Lunsford
  41   President, Chief Executive Officer and Chairman
Nathan F. Raciborski
  40   Co-Founder, Chief Technical Officer and Director
Matthew Hale
  54   Chief Financial Officer and Secretary
Michael M. Gordon
  50   Co-Founder and Chief Strategy Officer
Allan M. Kaplan
  36   Co-Founder and Director
William H. Rinehart
  43   Co-Founder
Erik W. Gabler
  37   Senior Vice President of International Sales & Global Account Management
Louis A. Greco III
  37   Vice President of North American Sales and Business Development Channels
Joseph H. Gleberman(3)
  49   Director
Robert Goad(3)
  52   Director
Fredric W. Harman(1)(2)(3)
  46   Director
Peter J. Perrone(2)(3)
  39   Director
David C. Peterschmidt(1)(2)(3)
  59   Director
Gary Valenzuela(1)(3)
  50   Director
 
(1) Member of our Audit Committee.
 
(2) Member of our Compensation Committee
 
(3) Member of our Nominating and Governance Committee
 
Jeffrey W. Lunsford has served as our President, Chief Executive Officer and Chairman since November 2006. Prior to joining us, Mr. Lunsford served as Chairman and Chief Executive Officer of WebSideStory, Inc., a provider of on-demand digital marketing applications, from April 2003 to November 2006. Prior to that, he served as the Chief Executive Officer of TogetherSoft Corporation, a software development company, from September 2002 to February 2003, and as the Senior Vice President of Corporate Development of S1 Corporation, a provider of customer interaction software for financial and payment services, from March 1996 to August 2002. He also currently serves on the board of directors of WebSideStory, Inc. and Midtown Bank and Trust Company. Mr. Lunsford received a B.S. in Information and Computer Sciences from the Georgia Institute of Technology.
 
Nathan F. Raciborski, one of our Co-Founders in June 2001, has served as our Chief Technical Officer since June 2001 and as a director since July 2006. Prior to co-founding Limelight, Mr. Raciborski was the Co-Founder and Chief Technical Officer of Aerocast, Inc., from 1999 to 2000. In 1997, he co-founded Entera and served on its board of directors until it was acquired by Cacheflow in 2000. In 1993, Mr. Raciborski co-founded and served as President, Chief Executive Officer and Director of Primenet Services for the Internet, which later merged with GlobalCenter, Inc. where he served as President and Director. GlobalCenter was acquired in 1997 by Frontier Communications, Inc., where he served as President of Network Services until 1998. He also currently serves as a managing member of Cocoon Capital, LLC, a private venture fund.
 
Matthew Hale has served as our Chief Financial Officer since December 2006. Prior to joining us, Mr. Hale served as President and Chief Financial Officer of S1 Corporation, a provider of customer interaction software for financial and payment services, from March 2000 to November 2006. Prior to that, from 1995 to 2000, Mr. Hale served as Chief Financial Officer of CCI-Triad Systems, Inc., a provider of enterprise inventory control and point of sale systems. Mr. Hale also spent over eight years


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with the accounting firm of Ernst & Young LLP (formerly, Ernst & Whinny). He is a member of the California and American Institutes of Certified Public Accountants. Mr. Hale received a B.B.A. in Accounting from Idaho State University.
 
Michael M. Gordon, one of our Co-Founders in June 2001, has served as our Chief Strategy Officer since January 2005. Prior to joining us in a full-time capacity, Mr. Gordon served as a Consulting Expert to Keller Rohrback PLC, a law firm, from January 2003 through April 2004. Prior to that, he served as Co-founder and Chief Executive Officer of Axient Communications, Inc. from January 1999 through October 2002. In April 2002, the U.S. District Court for the District of Arizona approved a consent judgment entered into between Mr. Gordon and the U.S. Department of Labor relating to the Labor Department’s allegations that in 1997, while Mr. Gordon was a fiduciary of the retirement plan of Gateway Data Science Corporation, or Gateway, Gateway failed to forward funds withheld from Gateway’s employees’ paychecks to the retirement plan within the time limits prescribed by the Employee Retirement Income Security Act, or ERISA. Pursuant to the judgment, Mr. Gordon agreed to pay restitution to the Gateway retirement plan, as well as certain fees and penalties, and to be permanently enjoined from serving as a named fiduciary of any retirement plan organized under ERISA and from future violations of ERISA and related federal laws. The judgment expressly provided, however, that it would not prevent Mr. Gordon from serving as an executive officer of other companies with which he might be affiliated in the future. In February 2004, the Labor Department reduced the civil penalties previously assessed against Mr. Gordon by 40% after it determined that, while Gateway had failed to abide by the time limits prescribed by ERISA, Mr. Gordon had acted in good faith. Mr. Gordon received a B.S. in Finance from Ohio State University.
 
Allan M. Kaplan, one of our Co-Founders in June 2001, has served as a director since August 2003, including serving as Chairman of our board of directors through November 2006. Mr. Kaplan also served as a Partner of Milestone Equity Partners from October 2001 to November 2003. Prior to co-founding Limelight, Mr. Kaplan served as Senior Vice President of Business Development and as a Director of Axient Communications from 1999 to 2000. In 1997, Mr. Kaplan co-founded Entera, which was acquired by Cacheflow in 2000. In 1993, Mr. Kaplan co-founded and served as Senior Vice President and Director of Primenet Services for The Internet, which later merged with GlobalCenter, where he served as Vice President of Operations and Director. GlobalCenter was acquired in 1997 by Frontier Communications, where he served as Senior Vice President of Network Services until 1998. Mr. Kaplan also currently serves as a managing member of Cocoon Capital, LLC a private venture fund, and sits on the advisory board of Greenhill SAVP.
 
William H. Rinehart, one of our Co-Founders in June 2001, and was our President and Chief Executive Officer from June 2001 to October 2006 and was a director from August 2003 through October 2006. Mr. Rinehart is engaged in international business development activities on our behalf, and he does not presently serve as one of our officers or directors. Prior to co-founding Limelight, Mr. Rinehart served in a number of executive-level sales positions at Critical Path, Inc., a provider of Internet messaging products and services, from 1998 to 2000. In 2002, the SEC alleged that during a portion of the time Mr. Rinehart was associated with Critical Path, Mr. Rinehart participated in a fraudulent scheme to inflate Critical Path’s revenue and earnings. Mr. Rinehart and the SEC entered into a settlement under which Mr. Rinehart neither admitted nor denied the allegations and agreed to be fined, was enjoined from future violations of certain U.S. securities laws, and was prohibited from serving as an officer or director of a public company through August 2007. Mr. Rinehart previously served as the Senior Vice President and General Manager of Frontier Communications, Inc. in 1998, as the Senior Vice President and General Manager of GlobalCenter, Inc. from 1997 to 1998, as the Vice President of Product Development in 1996 and as the Vice President of Sales in 1997 of Genuity, and as the Vice President and General Manager of MFS Communications from 1995 to 1996. Mr. Rinehart received a B.S. in Business Administration from Ball State University.
 
Erik Gabler has served as our Senior Vice President of International Sales & Global Account Management since January 2005. From December 2003 to January 2005, he served as our Vice President of Business Development, from December 2002 to December 2003 as our Vice


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President of Sales, and from July 2001 to December 2002 as our Director of Sales. Prior to joining us, Mr. Gabler served as National Director of Co-location Sales for WebVision from October 1998 to June 2001. He also served as Director of ISP Sales for GlobalCenter, Inc., a unit of Frontier Communications, Inc., from July 1997 to September 1998. Mr. Gabler received a B.A. in Organizational Communications from Arizona State University.
 
Louis A. Greco III has served as our Vice President of North American Sales and Business Development Channels since December 2006. From August 2005 to December 2006, he served as our Vice President of Sales and, from August 2003 to August 2005, he served as our National Sales Director. Prior to joining us, Mr. Greco served as a senior sales executive for Cable & Wireless America, an Internet network service provider, from June 2003 to July 2003. He also served in various senior sales and sales management positions for MCI WorldCom, a global business and residential communications company, from October 1996 to February 2003. Mr. Greco received a B.A. in Communication Sciences and English Literature from the University of Connecticut.
 
Joseph H. Gleberman has served as a director since September 2006. Mr. Gleberman has been a Managing Director in Goldman, Sachs & Co.’s Principal Investment Area since 1993. Prior to joining the Principal Investment Area, he served in a variety of capacities in the Investment Banking Division and the Mergers & Acquisitions Department at Goldman, Sachs & Co., which he joined in 1982. He also currently serves on the boards of directors of Euramax Holdings, Inc., iFormation Group, LLC, iHealth Technologies, Inc., and XLHealth Corporation. Mr. Gleberman received a B.A. and an M.A. from Yale University, and an M.B.A. from Stanford University.
 
Robert Goad has served as a director since September 2006. Mr. Goad has served as the Chairman and Chief Executive officer of Diveo Broadband Networks, Inc., an owner and operator of wireless voice and data networks and data centers in North and South America, since July 2002. Since 2000, he has served as the Chairman and Chief Executive Officer of Diamond Management, and its predecessor, Columbia Management, which manages a portfolio of companies in communications, media and entertainment industries. He previously served as the Interim Chief Executive Officer for Yankee Entertainment and Sports Network, a regional sports television network, from March 2004 through November 2004. Mr. Goad currently serves on the boards of directors of Yankee Entertainment, Grupo Clarin S.A., Diveo and Diamond Management.
 
Fredric W. Harman has served as a director since September 2006. Mr. Harman has served as a Managing Partner of Oak Investment Partners since 1994. From 1991 to 1994, Mr. Harman served as a General Partner of Morgan Stanley Venture Capital. Mr. Harman currently serves as a director of U.S. Auto Parts, an online provider of aftermarket auto parts, and several privately held companies, including Aspect Software Inc., a provider of contact center solutions, and Demand Media, Inc., an Internet new media company. Mr. Harman received a B.S. and an M.S. in Electrical Engineering from Stanford University, where he was a Hughes Fellow, and an M.B.A. from the Harvard Graduate School of Business.
 
Peter J. Perrone has served as a director since July 2006. Mr. Perrone has been a Vice President in Goldman, Sachs & Co.’s Principal Investment Area since 2002. Prior to transferring to the Principal Investment Area in 2001, Mr. Perrone worked in the High Technology Group at Goldman, Sachs & Co., where he started as an Associate in 1999. Mr. Perrone also currently serves on the board of directors of Teneros, Inc., Tervela, Inc. and Woven System, Inc. Mr. Perrone received a B.S. from Duke University, an M.S. from the Georgia Institute of Technology and an M.B.A. from the Massachusetts Institute of Technology, Sloan School of Management.
 
David C. Peterschmidt has served as a director since February 2007. Mr. Peterschmidt has served as President and Chief Executive Officer and as a director of Openwave Systems, Inc. since November 2004. Prior to joining Openwave, Mr. Peterschmidt served as Chief Executive Officer and Chairman of Securify, Inc., from September 2003 to November 2004. Mr. Peterschmidt was Chief Executive Officer and Chairman of Inktomi, Inc. from July 1996 to March 2003. Mr. Peterschmidt also currently serves on the boards of directors of Business Objects S.A., UGS Corp. and Cellular


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Telecommunications and Internet Association (CTIA). Mr. Peterschmidt received a B.A. in Political Science from the University of Missouri and an M.A. from Chapman College.
 
Gary Valenzuela has served as a director since February 2007. Mr. Valenzuela has served as President of Powerplay Properties LLC since July 2000. Prior to that, Mr. Valenzuela served as Senior Vice President and Chief Financial Officer of Yahoo! Inc. from January 1996 to July 2000, and he was Senior Vice President and Chief Financial Officer of TGV Software, Inc., a supplier of Internet software products, from January 1994 to January 1996. He is a Certified Public Accountant in California. Mr. Valenzuela received a B.S. in Business Administration with an Accounting Emphasis and a Computer Systems minor from San Jose State University.
 
Executive Officers
 
Our executive officers are elected by, and serve at the discretion of, our board of directors. There are no family relationships among any of our directors or officers.
 
Board of Directors
 
Our board of directors is currently composed of nine members, six of whom are independent within the meaning of the independent director guidelines of the Nasdaq Stock Market LLC. Prior to this offering, our board of directors will be divided into three staggered classes of directors. At each annual meeting of stockholders, a class of directors will be elected for a three-year term to succeed the same class whose terms are then expiring. The terms of the directors will expire upon the election and qualification of successor directors at the Annual Meeting of Stockholders to be held during the years 2008 for the Class I directors, 2009 for the Class II directors and 2010 for the Class III directors.
 
  •  Our Class I directors will be Messrs. Goad, Kaplan and Lunsford;
 
  •  Our Class II directors will be Messrs. Gleberman, Harman and Perrone; and
 
  •  Our Class III directors will be Messrs. Peterschmidt, Raciborski and Valenzuela.
 
Our amended and restated certificate of incorporation and bylaws provide that the number of our directors, which is currently nine members, shall be fixed from time to time by a resolution of the majority of our board of directors. Each officer serves at the discretion of the board of directors and holds office until his successor is duly elected and qualified or until his or her earlier resignation or removal. There are no family relationships among any of our directors or executive officers.
 
The division of our board of directors into three classes with staggered three-year terms may delay or prevent a change of our management or a change of control.
 
Committees of the Board of Directors
 
As of the closing of this offering, our board will have an audit committee, a compensation committee, and a nominating and corporate governance committee, each of which will have the composition and responsibilities described below.
 
Audit Committee
 
Our audit committee oversees our corporate accounting and financial reporting process. Our audit committee will:
 
  •  evaluate the independent auditors’ qualifications, independence and performance;
 
  •  determine the engagement of the independent auditors;
 
  •  approve the retention of the independent auditors to perform any proposed permissible non-audit services;


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  •  monitor the rotation of partners of the independent auditors on the Company engagement team as required by law;
 
  •  review our financial statements and review our critical accounting policies and estimates; and
 
  •  review and discuss with management and the independent auditors the results of the annual audit and our quarterly financial statements.
 
The members of our audit committee are Messrs. Harman, Peterschmidt and Valenzuela. We believe that the composition of our audit committee meets the requirements for independence under the current requirements of the Nasdaq Stock Market LLC and SEC rules and regulations. We believe that the functioning of our audit committee complies with the applicable requirements of the Nasdaq Stock Market LLC and SEC rules and regulations. We intend to comply with future requirements to the extent they become applicable to us.
 
Compensation Committee
 
Our compensation committee oversees our corporate compensation programs. The compensation committee will also:
 
  •  review and recommend policy relating to compensation and benefits of our officers and employees;
 
  •  review and approve corporate goals and objectives relevant to compensation of the Chief Executive Officer and other senior officers;
 
  •  evaluate the performance of our officers in light of established goals and objectives;
 
  •  set compensation of our officers based on its evaluations;
 
  •  administer the issuance of stock options and other awards under our stock plans; and
 
  •  review and evaluate, at least annually, its own performance and that of its members, including compliance with the committee charter.
 
The members of our compensation committee are Messrs. Harman, Perrone and Peterschmidt, each of whom our board of directors has determined is independent within the meaning of the independent director guidelines of the Nasdaq Stock Market LLC. We believe that the composition of our compensation committee meets the requirements for independence under, and the functioning of our compensation committee complies with, any applicable requirements of the Nasdaq Stock Market LLC and SEC rules and regulations. We intend to comply with future requirements to the extent they become applicable to us.
 
Nominating and Governance Committee
 
We have established a nominating and governance committee to oversee and assist our board of directors in reviewing and recommending nominees for election as directors. The nominating and governance committee will also:
 
  •  assess the performance of the board of directors;
 
  •  direct guidelines for the composition of our board of directors; and
 
  •  review and administer our corporate governance guidelines.
 
The members of our nominating and governance committee are Messrs. Gleberman, Goad, Harman, Perrone, Peterschmidt and Valenzuela, each of whom is a non-management member of our board of directors.
 
Our board of directors may from time to time establish other committees.


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Codes of Ethics
 
Prior to the completion of this offering we expect to adopt a code of ethics for our principal executive and senior financial officers applicable to our Chief Executive Officer, Chief Financial Officer and other principal executive and senior financial officers. In addition, we expect to adopt a code of business conduct and ethics for all employees, officers and directors. These codes will become effective as of the effective date of this offering.
 
Compensation Committee Interlocks and Insider Participation
 
None of the members of our compensation committee has at any time been one of our officers or employees. None of our executive officers serves, or in the past year has served, as a member of the board of directors or compensation committee of any entity that has one or more executive officers who serve on our board of directors or compensation committee.
 
Director Compensation
 
In 2006, we did not provide any member of our board of directors compensation in his capacity as a director. In 2007, David C. Peterschmidt and Gary Valenzuela joined our board of directors, and each were granted an option to purchase 35,000 shares of our common stock at an exercise price of $3.14 per share. We also agreed to pay each of these directors an annual cash retainer of $25,000. In addition, we agreed to pay each of Messrs. Peterschmidt and Valenzuela $5,000 annually for membership on each committee on which they serve. In the future, our board of directors expects to adopt a non-employee director compensation policy that will provide non-employee directors with an overall compensation package that we believe will be considered customary for directors of a public company and would allow us to attract and retain qualified members of our board of directors. Such a policy may include initial and annual equity awards, annual cash retainers associated with board of directors and board committee service, and cash meeting fees. However, at this time no such policy has been agreed to nor adopted.
 
Allan M. Kaplan, one of our Co-Founders and a member of our board of directors, has been a part-time employee of ours since August 2006 and served as a consultant to us during the first seven months of 2006. Under this employment arrangement, Mr. Kaplan provides advisory level services to members of our executive team and receives a salary of $6,250 per month, plus standard benefits available to our other employees. In addition, our arrangement with Mr. Kaplan provides that we will not, except in the case of termination for cause, terminate Mr. Kaplan’s employment with us or terminate the benefits to which he is entitled under this arrangement until July 2007. In August 2006, concurrently with our granting of options to each of our other Co-Founders, we granted Mr. Kaplan an option to purchase 625,000 shares of common stock with an exercise price of $0.40 per share, which vests at a rate of approximately 1/12th per month from the grant date. In September 2006, Mr. Kaplan exercised this option in full. We recognized $1,478,000 in stock-based compensation expense for financial reporting purposes with respect to this option grant, computed in accordance with FAS 123R. In 2006, pursuant to his consulting and employment arrangements with us, Mr. Kaplan earned an aggregate of $37,500 in salary, $337,622 in bonus, $8,868 in other compensation (representing amounts paid for health and life insurance) and, together with the option award value described above, total compensation of $1,861,990.
 
Compensation Discussion and Analysis
 
Our executive compensation program is designed to attract individuals with the skills necessary for us to achieve our business objectives, to reward those individuals fairly over time, to retain those individuals who continue to perform at or above the levels that we expect and to closely align the compensation of those individuals with our performance on both a short-term and long-term basis. To that end, our executive officers’ compensation has two primary components: base cash compensation, or salary, stock option grants and stock awards. In addition, we have in the past and may in the future


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provide discretionary performance bonuses to individuals or all employees to recognize individual performance or the achievement of important business objectives such as the development of our network, the establishment and maintenance of key strategic relationships, the growth of our customer base, as well as financial and operational performance. Finally, we also provide our executive officers a variety of benefits that are available generally to all salaried employees.
 
General
 
We view each component of executive compensation as related but distinct. Although we review total compensation of our executive officers, we do not believe that significant compensation derived from one component of compensation should negate or reduce compensation from other components. We determine the appropriate level for each compensation component based in part, but not exclusively, on competitive benchmarking consistent with our recruiting and retention goals, our view of internal equity and consistency, our overall performance and other considerations we deem relevant. For annual compensation reviews, we evaluate each executive’s performance, look to industry trends in compensation levels and generally seek to ensure that compensation is appropriate for an executive officer’s level of responsibility and for the promotion of future performance. Except as described below, we have not adopted any formal or informal policies or guidelines for allocating compensation between long-term and currently paid out compensation, between cash and non-cash compensation or among different forms of non-cash compensation. However, our philosophy is to make a greater percentage of an employee’s compensation performance-based and to keep cash compensation to a nominally competitive level while providing the opportunity to be well rewarded through equity if we perform well over time. To this end, we use stock options as a significant component of compensation because we believe that they best relate an individual’s compensation to the creation of stockholder value. While we offer competitive base salaries and the potential for cash bonus, stock-based compensation has also been a significant motivator in attracting employees for Internet-related and other technology companies. In the future, we expect our newly constituted compensation committee to be active in establishing comprehensive policies and guidelines for executive compensation.
 
As our board of directors historically has not operated through the use of committees, we have not, prior to March 2007, had a compensation committee of the board of directors. Our full board, however, has traditionally sought to perform, at least annually, a review of our executive officers’ overall compensation packages to determine whether they provide adequate incentives and motivation and whether they adequately compensate our executive officers relative to comparable officers in other companies with which we compete in attracting and retaining our executives. To date, we have conducted a detailed analysis of the cash and equity compensation of our chief executive officer, and established general budgetary guidelines for aggregate annual employee cash compensation that our chief executive officer has allocated among individual executives and employees on a case by case basis in his discretion. For compensation decisions regarding the grant of equity compensation, including vesting schedules and, in some cases, milestones providing for accelerated vesting if such milestones are achieved, relating to employees other than to our chief executive officer, the board of directors typically considers recommendations from the chief executive officer and/or other members of management. Upon completion of this offering, we intend for the compensation committee to play the primary role in setting compensation levels for our executive officers among all compensation components. We also anticipate that the compensation committee will also have the authority to grant awards under our 2007 Equity Incentive Plan, which will be effective upon completion of this offering.
 
Elements of Compensation
 
Executive compensation consists of the following elements:
 
Base Compensation.  We fix executive officer base compensation at a level that we believe enables us to hire and retain individuals in a competitive environment and reward individual performance according to satisfactory levels of contribution to our overall business goals. We also


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take into account the base salaries that are payable by companies with which we believe we generally compete to attract and retain our executives. The salaries of Messrs. Raciborski, Gordon, Rinehart, Greco and Gabler were increased by approximately 22%, 20%, 22% and 0%, respectively, in 2006, and by approximately 34%, 22%, 0%, 11%, and 17% for 2007, respectively. These increases were part of our normal annual compensation review process and reflect our review of the compensation levels of similar positions at comparable companies. Messrs. Lunsford and Hale were hired by us in 2006 and, therefore, did not receive a salary increase for 2007.
 
Annual Incentive Cash Bonuses.  We have periodically utilized cash bonuses to reward performance achievements and have in place annual target incentive bonuses for each of our executive officers, payable either in whole or in part, depending on the extent to which the employee’s applicable performance goals are achieved. In 2006, we paid incentive cash bonuses for all employees generally in the range of $40,000 to $337,000 for members of our executive management, and $5,000 to $36,000 for other employees, with higher bonuses awarded to certain members of executive management in connection with our strong performance in 2006. Bonuses have generally been reviewed and approved by our board of directors, which has worked to determine the performance and operational criteria necessary for award of such bonuses. The bonuses for Mr. Raciborski, our Chief Technology Officer, Mr. Gordon, our Chief Strategy Officer and Mr. Rinehart, our Chief Executive Officer until November 2006, were based on over-achievement against our 2006 business plan. Mr. Lunsford received a $100,000 signing bonus upon joining us in November 2006. For 2006, Messrs. Lunsford, Raciborski, Gordon, Rinehart, Gabler and Greco each received an aggregate bonus of $100,000, $337,622, $337,622, $337,622, $40,000 and $44,190, respectively, which represented approximately 31%, 115%, 125%, 115%, 29% and 33% of their base salaries, respectively.
 
Long-Term Incentive Program.  We believe that long-term performance is achieved through an ownership culture that encourages such performance by our executive officers through the use of stock and stock-based awards. We utilize stock options to ensure that our executive officers have a continuing stake in our long-term success. Because our executive officers are awarded stock options with an exercise price equal to or greater than the fair market value of our common stock on the date of grant, the determination of which is discussed below, these options will have value to our executive officers only if the market price of our common stock increases after the date of grant. Typically, our stock option grants to new employees vest at the rate of 25% after the first year of service with remainder vesting ratably over the subsequent 36 months. For non-new hire stock option grants, vesting typically occurs ratably over 48 months from the date of grant. Authority to make stock option grants to executive officers has historically rested with our board of directors, and we expect our board of directors will delegate that authority to our compensation committee in the future. In determining the size of stock option grants to executive officers, our board of directors considers our performance against the strategic plan, individual performance against the individual’s objectives, the experience of our board members, the extent to which shares subject to previously granted options are vested and the recommendations of our chief executive officer and other members of management.
 
We do not have any program, plan or obligation that requires us to grant equity compensation on specified dates and, because we have not been a public company, we have not made equity grants in connection with the release or withholding of material non-public information. However, we intend to implement policies to ensure that equity awards are granted at fair market value on the date that the grant action occurs.
 
Stock Options and Equity Awards.  Our Amended and Restated 2003 Incentive Compensation Plan authorizes us to grant options to purchase shares of our common stock to our employees and executive officers, which is described in further detail under “— Employee Benefit Plans.” During 2006, we granted options to Messrs. Lunsford, Raciborski, Hale, Gordon and Rinehart, to purchase 1,000,000, 625,000, 70,000, 625,000, and 625,000 shares of our common stock, respectively. We granted an option to Mr. Lunsford for 500,000 shares of common stock at an exercise price of $9.80 per share and an option for 500,000 shares of common stock at an exercise price of $19.80 per share. We granted an option to Mr. Hale for 70,000 shares of common stock at an exercise price of


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$10.00 per share. With the exception of the grants to Messrs. Lunsford and Hale, the option grants had an exercise price of $0.40 per share. Each of the grants to Messrs. Lunsford and Hale were made in connection with their commencement of employment at Limelight, respectively, and the remaining grants were made by our board of directors as part of our annual process of reviewing equity positions of our employees, and the board determined that, in light of the individuals’ performance, equity ownership and level of vesting, it was appropriate to provide additional incentive for each of these personnel.
 
Prior to the completion of this offering, we plan to adopt a new 2007 Equity Incentive Plan, which is described below under “— Employee Benefit Plans.” The 2007 Equity Incentive Plan will replace our existing 2003 Incentive Compensation Plan immediately following this offering and will afford greater flexibility in making a wide variety of equity awards, including stock options, shares of restricted stock, restricted stock units, stock appreciation rights, performance units and performance shares, to executive officers and our other employees. Other than the equity plans described above, we do not have any equity security ownership guidelines or requirements for our executive officers.
 
Other Benefits.  Executive officers are eligible to participate in all of our employee benefit plans, such as medical, dental, vision, group life, short and long-term disability, and supplemental insurance and our 401(k) plan, in each case on the same basis as other employees, subject to applicable laws. We also provide vacation and other paid holidays to all employees, including our executive officers, which are comparable to those provided at peer companies.
 
Executive Compensation Tables
 
The following table provides information regarding the compensation of each of the individuals who served as our principal executive officer and principal financial officer in 2006 and each of the next three most highly compensated executive officers during 2006. We refer to these executive officers as our named executive officers.
 
Summary Compensation Table
 
                                                 
            Stock
  Option
  All Other
   
Name and Principal Position
 
Salary
 
Bonus
 
Awards(1)
 
Awards(1)
 
Compensation(2)
 
Total
 
Jeffrey W. Lunsford(3)
  $ 38,333     $ 100,000     $ 1,668,000     $ 367,000     $ 322     $ 2,173,655  
President, Chief Executive Officer and Chairman
                                               
Nathan F. Raciborski
    220,000       337,622             1,481,000       11,476       2,050,098  
Co-Founder and Chief Technical Officer
                                               
Matthew Hale(4)
    22,917             44,000       18,000       28       84,945  
Chief Financial Officer
                                               
Michael M. Gordon(5)
    180,000       337,622             1,483,000       11,265       2,011,887  
Co-Founder and Chief Strategy Officer
                                               
William H. Rinehart(6)
    220,000       337,622             1,480,000       8,537       2,046,159  
Co-Founder
                                               
Erik W. Gabler
    180,000       40,000             3,000       3,867       226,867  
Senior Vice President of International Sales and Global Account Management
                                               
Louis A. Greco III
    140,453       197,444             1,800       3,867       343,564  
Vice President of North American Sales and Business Development Channels
                                               
 
(1) Amounts represent stock-based compensation expense for fiscal year 2006 for stock and option awards under SFAS 123R as discussed in Note 8, Stockholders’ Equity subheading “Incentive


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Compensation Plan,” of the Notes to Consolidated Financial Statements included elsewhere in this prospectus.
 
(2) Represents amounts paid for health and life insurance for the employee and the employee’s family members.
 
(3) Mr. Lunsford’s annual salary upon completion of this offering will be $400,000.
 
(4) Mr. Hale’s annual salary upon completion of this offering will be $275,000.
 
(5) Mr. Rinehart served as our Chief Executive Officer until October 2006.
 
(6) Mr. Gordon served as our principal financial officer until November 2006.
 
Grants of Plan-Based Awards in 2006
 
The following table provides information regarding grants of stock options and other plan based awards to each of our named executive officers during the fiscal year ended December 31, 2006. All options granted to Messrs. Raciborski, Gordon, and Rinehart were granted at the fair market value of our common stock, as determined by our board of directors on the date of grant. The options granted to Messrs. Lunsford and Hale were granted at exercise prices in excess of the fair market value of our common stock on the date of grant. These options were granted under our Amended and Restated 2003 Incentive Compensation Plan.
 
                                         
                All Other
             
          All Other
    Option Awards:
    Exercise or
    Grant Date
 
          Stock Awards:
    Number of
    Base Price
    Fair Value
 
          Number of
    Securities
    of Option
    of Stock
 
          Shares of
    Underlying
    Awards
    and Option
 
Name
 
Grant Date
   
Stock or Units(#)
   
Options(#)
   
($/sh)
   
Awards($)(1)
 
 
Jeffrey W. Lunsford
    11/20/06             500,000 (2)   $ 9.80     $ 3,567,000  
      11/20/06             500,000 (3)     19.80       2,971,000  
      10/20/06       1,000,000 (4)                 10,040,000  
Nathan F. Raciborski
    08/02/06             625,000 (5)     0.40       3,135,000  
Matthew Hale
    12/01/06             70,000 (2)     10.00       448,000  
      12/01/06       230,000                   1,255,000  
Michael M. Gordon
    08/02/06             625,000 (5)     0.40       448,000  
William H. Rinehart
    08/02/06             525,000 (5)     0.40       448,000  
Erik W. Gabler
                             
Louis A. Greco III
                             
 
(1) Amounts represent total fair value of stock and option awards granted in 2006 under SFAS 123R as discussed in Note 8, Stockholders’ Equity subheading “Incentive Compensation Plan,” of the Notes to Consolidated Financial Statements included elsewhere in this prospectus.
 
(2) Vests 1/4 after one year and approximately 1/48 per month thereafter. Option expires 10 years from the date of grant.
 
(3) Vests 1/48 after two years and approximately 1/48 per month thereafter. Option expires 10 years from the date of grant.
 
(4) Twelve and one-half percent (12.5%) of the shares vested on the grant date. An additional twelve and one-half percent (12.5%) of the shares vest on the 120th day after the grant date, and 1/48 of the shares vest each month thereafter.
 
(5) Vests approximately 1/12 per month. The board of directors has authorized the early exercise of this grant. Option expires 10 years from the date of grant.


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Outstanding Equity Awards at 2006 Fiscal Year-End
 
The following table presents certain information concerning the outstanding option awards held as of December 31, 2006 by each named executive officer.
 
                                                         
                            Stock Awards        
                                  Equity Incentive
       
                            Equity Incentive
    Plan Awards:
       
                            Plan Awards:
    Market or
       
    Option Awards     Number of
    Payout Value
       
    Number of
    Number of
                Unearned
    of Unearned
       
    Securities
    Securities
                Shares, Units
    Shares, Units
       
    Underlying
    Underlying
                or Other
    or Other
       
    Unexercised
    Unexercised
    Option
    Option
    Rights
    Rights
       
    Options:
    Options:
    Exercise
    Expiration
    That Have
    That Have
       
Name
 
Exercisable (#)
   
Unexercisable(#)
   
Price($)
   
Date
   
Not Vested (#)
   
Not Vested ($)
       
 
Jeffrey W. Lunsford
          500,000     $ 9.80       11/20/16 (1)     875,000 (2)   $ 1,111,250          
            500,000       19.80       11/20/16 (3)                    
Nathan F. Raciborski
                                           
Matthew Hale
          70,000       10.00       12/01/16 (4)     230,000 (4)     292,100          
Michael M. Gordon
                                           
William H. Rinehart
                                           
Erik W. Gabler
    243             0.21       12/15/13 (5)                    
      3,500       71,500       0.40       10/27/15 (6)                    
Louis A. Greco III
    18,900       51,100       0.40       10/27/15 (7)                    
 
(1) Vesting commenced November 20, 2006 and vests 1/4 after one year and approximately 1/48 per month thereafter.
 
(2) 12.5% of the shares vested on the grant date, October 20, 2006. An additional 12.5% of the shares vest on the 120th day after the grant date, and approximately 1/48 of the shares vest on the corresponding day of each month thereafter.
 
(3) Vesting commenced November 20, 2006 and vests 1/48 after two years and approximately 1/48 per month thereafter.
 
(4) Vesting commenced December 1, 2006 and vests 1/4 after one year and approximately 1/48 per month thereafter.
 
(5) Vesting commenced December 15, 2003 and vests 1/4 after one year and approximately 1/36 per month thereafter.
 
(6) Vesting commenced November 1, 2005 and vests 1/4 after one year and approximately 1/36 per month thereafter.
 
(7) Vesting commenced November 1, 2005 and vests 1/4 after one year and approximately 1/48 per month thereafter.


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Option Exercises and Stock Vested in Last Fiscal Year
 
The following table presents certain information concerning the exercise of options and vesting of stock awards by each of our named executive officers during the fiscal year ended December 31, 2006, including the value of gains on exercise and the value of the stock awards.
 
                                 
    Option Awards     Stock Awards  
    Number of
          Number of
       
    Shares
    Value
    Shares
    Value
 
    Acquired on
    Realized on
    Acquired on
    Realized on
 
Name
 
Exercise(#)
   
Exercise($)
   
Vesting(#)
   
Vesting($)(1)
 
 
Jeffrey W. Lunsford
        $       125,000     $ 50,000  
Nathan F. Raciborski
    500,000       0              
      625,000       0              
Matthew Hale
                       
Michael M. Gordon
    250,000       0              
      625,000       0              
William H. Rinehart
    275,000       0              
      625,000       0              
Erik W. Gabler
    209,772       39,857              
      3,807       4,073              
      25,000       22,000              
Louis A. Greco III
    25,410       4,828              
 
(1) The aggregate dollar amount realized upon the vesting of a stock award represents the aggregate market price of the shares of our common stock underlying the stock award on the vesting date (assumed to be the midpoint of the price range set forth on the cover page of this prospectus) multiplied by the shares vested on the vesting date.
 
Pension Benefits
 
None of our named executive officers participates in or has account balances in qualified or non-qualified defined benefit plans sponsored by us.
 
Nonqualified Deferred Compensation
 
None of our named executive officers participates in or has account balances in non-qualified defined contribution plans or other deferred compensation plans maintained by us.
 
Employment Agreements and Change of Control Arrangements
 
Jeffrey W. Lunsford
 
We have entered into an employment agreement, dated October 20, 2006, with Mr. Lunsford, our President, Chief Executive Officer and Chairman of the Board.
 
Compensation.  Mr. Lunsford’s annual salary is $325,000 per year and will be increased to $400,000 per year effective upon the closing of this offering.
 
Mr. Lunsford is eligible to receive an annual cash incentive bonus payable based on achievement of performance goals established by our board of directors. During calendar year 2007, Mr. Lunsford’s target annual incentive bonus is $275,000. The earned annual cash incentive bonus, if any, payable to Mr. Lunsford will depend upon the extent to which the applicable performance goals specified by our board of directors are achieved.
 
We paid Mr. Lunsford a $100,000 signing bonus pursuant to his employment agreement. In addition, the employment agreement provides that, in the event that Mr. Lunsford’s prior employer,


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WebSideStory, Inc., fails to pay amounts owed to him pursuant to WebSideStory, Inc.’s bonus plan, we will pay Mr. Lunsford such amount minus the amount actually paid to Mr. Lunsford by WebSideStory, Inc. under WebSideStory, Inc.’s bonus plan.
 
Equity Awards.  Pursuant to his employment agreement, Mr. Lunsford was granted 1,000,000 shares of our restricted common stock under our Amended and Restated 2003 Incentive Compensation Plan on October 20, 2006. Of these shares, 12.5% vested on October 20, 2006. An additional 12.5% vested on February 17, 2007, and one forty-eighth of the total number of shares will vest monthly thereafter assuming Mr. Lunsford’s continued employment with us.
 
On November 20, 2006, Mr. Lunsford was granted an option to purchase 500,000 shares of our common stock pursuant to his employment agreement at a per share exercise price equal to $9.80 under the Amended and Restated 2003 Incentive Compensation Plan. This option is scheduled to vest at a rate of 25% of the shares on the first anniversary of the grant, and one forty-eighth of the total number of shares on a monthly basis thereafter, assuming Mr. Lunsford’s continued employment with us.
 
We also issued Mr. Lunsford an option to purchase 500,000 shares of our common stock on November 20, 2006 at a per share price of $19.80 under the Amended and Restated 2003 Incentive Compensation Plan. This option is scheduled to vest at a rate of one forty-eighth of the total number of shares on a monthly basis beginning on the second anniversary of the date of grant.
 
Expenses.  Mr. Lunsford’s employment agreement provides that we will reimburse him for reasonable travel, entertainment and other expenses incurred by him in furtherance of the performance of his employment duties. Such reimbursement includes the cost incurred by Mr. Lunsford in flying his personal airplane on business travel up to a maximum of $400 per hour and the cost incurred by Mr. Lunsford in renting an apartment in the Phoenix area, not to exceed $2,000 per month.
 
Potential Payments Upon Termination or Change-in-Control and Other Distributions.  Mr. Lunsford’s employment agreement defines a change of control as the consummation of a merger or consolidation or the approval of a plan of complete liquidation or for the sale or disposition of all or substantially all of our assets.
 
In the event we consummate a change of control transaction, 50% of Mr. Lunsford’s then outstanding unvested equity awards will vest. Assuming that such change of control occurred on December 31, 2006, Mr. Lunsford would potentially gain $      assuming that the price per share of our common stock as of December 31, 2006 is          , which is the mid-point of the range indicated on the cover page of this prospectus.
 
In the event that we terminate Mr. Lunsford’s employment without cause or Mr. Lunsford resigns for good reason, and the termination is in connection with a change of control, then Mr. Lunsford will receive (i) continued payment of his base salary for twelve months, (ii) payment in the amount equal to 100% of Mr. Lunsford’s target annual incentive for the year in which the termination occurs, (iii) the vesting of 100% of Mr. Lunsford’s then outstanding unvested equity awards, and (iv) reimbursement for premiums paid for continued heath benefits for Mr. Lunsford and any of his eligible dependents until the earlier of 12 months or the date on which Mr. Lunsford and his eligible dependants are covered by a similar plan. Assuming that such change of control occurred on December 31, 2006, Mr. Lunsford would potentially gain $      assuming that the price per share of our common stock as of December 31, 2006 is          , which is the mid-point of the range indicated on the cover page of this prospectus.
 
In the event that we terminate Mr. Lunsford’s employment without cause or Mr. Lunsford resigns for good reason, and such termination is not in connection with a change in control, Mr. Lunsford will receive (i) continued payment of his base salary for twelve months, (ii) the current year’s target annual incentive bonus pro-rated to the date of termination and, (iii) reimbursement for premiums paid for


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continued health benefits for Mr. Lunsford and any of his eligible dependents until the earlier of 12 months or the date on which Mr. Lunsford and his eligible dependents are covered by a similar plan.
 
If Mr. Lunsford terminates his employment voluntarily or is terminated for cause, then (i) all further vesting of his outstanding equity awards will terminate immediately, (ii) all payments of compensation to Mr. Lunsford will terminate immediately, and (iii) Mr. Lunsford will be eligible for severance only in accordance with our then established plans. In addition, if Mr. Lunsford terminates his employment voluntarily within the first full year following November 20, 2006, he is required to sell to us all of his shares of our stock for an aggregate of $1.00.
 
In the event Mr. Lunsford’s employment is terminated due to death or disability, 25% of his then unvested options shall vest.
 
Material Conditions or Obligations of Severance.  Mr. Lunsford’s employment agreement provides that the receipt of any severance or other benefits described above is subject to: Mr. Lunsford’s signing and not revoking a separation agreement and release of claims; Mr. Lunsford agreeing that during his employment term and for 24 months thereafter, he will not solicit any of our employees for employment or directly or indirectly engage in, have any ownership interest in or participate in any entity that as of the date of termination competes with us in any substantial business; and Mr. Lunsford not knowingly and materially making any disparaging, criticizing, or otherwise derogatory statements regarding us.
 
Matthew Hale
 
We have entered into an employment agreement, dated November 22, 2006, with Mr. Hale, our Chief Financial Officer and Secretary.
 
Compensation.  Mr. Hale’s employment agreement provides that we will pay Mr. Hale an annual salary of $225,000, which will be increased to $275,000 upon the closing of this offering. Mr. Hale’s employment agreement also provides that we will pay Mr. Hale an annual bonus of $50,000 up until the closing of this offering, which is payable in accordance with our normal payroll practices. Mr. Hale is also eligible to receive an incentive bonus, which when combined with his annual cash incentive bonus, would entitle him to earn an aggregate of $100,000 in bonuses for calendar year 2007. This incentive bonus will be payable upon the achievement of performance goals established by the board of directors or by the compensation committee of the board of directors. During calendar year 2007, Mr. Hale’s target annual incentive is $50,000, which shall be adjusted upward in an amount equal to any portion of the annual bonus Mr. Hale is entitled to receive before the close of this offering that we have not paid to Mr. Hale.
 
Equity Awards.  Mr. Hale’s employment agreement provides that we will grant Mr. Hale 230,000 shares of restricted common stock under the Amended and Restated 2003 Incentive Compensation Plan. One-fourth of the total number of shares of restricted common stock subject to this grant vests and our right of repurchase with respect to such vested shares lapses on December 1, 2008. Thereafter, an additional one forty-eighth of the total number of shares of restricted common stock subject to this grant vests and our right of repurchase to such vested shares lapses on each calendar month anniversary after December 1, 2008.
 
Additionally, Mr. Hale’s employment agreement provides that we will issue Mr. Hale an option to purchase 70,000 shares of common stock at a per share exercise price equal to $10.00 per share under the terms of the Amended and Restated 2003 Incentive Compensation Plan. One-forth of the total number of options to purchase shares of common stock subject to this grant vests and becomes exercisable on December 1, 2008. Thereafter, an additional one forty-eighth of the total number of options to purchase shares of common stock subject to this grant vests and becomes exercisable on each calendar month anniversary after December 1, 2008.
 
Employment Benefits.  Mr. Hale’s employment agreement provides that we will reimburse Mr. Hale for reasonable expenses incurred in the furtherance of performing his duties, including up to


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$2,000 per month incurred in renting an apartment in the Phoenix area for a period not to exceed one hundred and eighty days from the date Mr. Hale commenced service as our Chief Financial Officer. Additionally, Mr. Hale’s employment agreement provides that we will reimburse Mr. Hale for reasonable moving and relocation related expenses in connection with Mr. Hale’s move from the Atlanta metro area to the Phoenix area, provided that such moving and relocation related expenses do not exceed $140,000 in the aggregate.
 
Potential Payments Upon Termination or Change-in-Control and Other Distributions.  Mr. Hale’s employment agreement defines a change of control as the consummation of a merger or consolidation or the approval of a plan of complete liquidation or for the sale or disposition of all or substantially all of our assets.
 
In the event that we consummate a change of control transaction, 50% of Mr. Hale’s then outstanding unvested equity awards will vest. Assuming that such change of control occurred on December 31, 2006, Mr. Hale would potentially gain $      assuming that the price per share of our common stock as of December 31, 2006 is $     , which is the mid-point of the range indicated on the cover page of this prospectus.
 
In the event that we terminate Mr. Hale’s employment without cause or Mr. Hale resigns for good reason, in either case in connection with a change of control, Mr. Hale will receive continued payment for 12 months of his then current annual salary, 100% of the current year’s target annual incentive bonus, 100% of Mr. Hale’s then outstanding unvested equity awards will vest and reimbursement for premiums paid for continued health benefits under our health plan until the earlier of 12 months or the date upon which Mr. Hale and Mr. Hale’s eligible dependents become covered under similar plans. Assuming that such termination or resignation in connection with a change of control occurred on December 31, 2006, Mr. Hale would potentially gain $      assuming that the price per share of our common stock as of December 31, 2006 is $     , which is the mid-point of the range indicated on the cover page of this prospectus.
 
In the event that we terminate Mr. Hale’s employment without cause or Mr. Hale resigns for good reason, in either case other than in connection with a change of control, Mr. Hale will receive continued payment for 12 months of his then current annual salary, the current year’s target annual incentive bonus pro-rated to the date of termination and reimbursement for premiums paid for continued health benefits under our health plans until the earlier of 12 months or the date upon which Mr. Hale and Mr. Hale’s eligible dependents become covered under similar plans.
 
In the event that we terminate Mr. Hale’s employment for cause or Mr. Hale resigns without good reason, all payments of compensation to Mr. Hale will terminate immediately and all further vesting of Mr. Hale’s outstanding equity awards will terminate immediately.
 
Mr. Hale will be eligible for severance benefits only in accordance with our then-established plan. In the event that Mr. Hale’s employment is terminated due to death or disability, 25% of Mr. Hale’s then unvested options shall vest.
 
Material Conditions or Obligations of Severance   Mr. Hale’s employment agreement provides that the receipt of any severance or other benefits described above is subject to Mr. Hale’s signing and not revoking a separation agreement and release of claims; agreeing that during his employment term and for 24 months thereafter, he will not solicit any of our employees for employment or directly or indirectly engage in, have any ownership interest in or participate in any entity that as of the date of termination competes with us in any substantial business; and not knowingly and materially making any disparaging, criticizing or otherwise derogatory statements regarding us.


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Employee Benefit Plans
 
2007 Equity Incentive Plan
 
Our board of directors adopted our 2007 Equity Incentive Plan in           2007, and our stockholders approved this plan in           2007. Our 2007 Equity Incentive Plan provides for the grant of incentive stock options, within the meaning of Section 422 of the Internal Revenue Code of 1986, as amended, to our employees and any parent and subsidiary corporations’ employees, and for the grant of nonstatutory stock options, restricted stock, restricted stock units, stock appreciation rights, performance units and performance shares to our employees, directors and consultants and our parent and subsidiary corporations’ employees and consultants.
 
Share Reserve.  We have reserved a total of           shares of our common stock for issuance under the 2007 Equity Incentive Plan, plus (a) any shares which have been reserved but not issued under our 2003 Incentive Compensation Plan as of the effective date of this offering and (b) any shares returned to our 2003 Incentive Compensation Plan on or after the effective date of this offering as a result of termination of options or the repurchase of shares issued under the 2003 Incentive Compensation Plan. In addition, our 2007 Equity Incentive Plan provides for annual increases in the number of shares available for issuance thereunder on the first day of each fiscal year, beginning with our 2008 fiscal year, equal to the least of:
 
  •            % of the outstanding shares of our common stock on the last day of the immediately preceding fiscal year;
 
  •             shares; or
 
  •  such other amount as our board of directors may determine.
 
Administration of Awards.  Our board of directors or a committee of our board administers our 2007 Equity Incentive Plan. Our compensation committee will be responsible for administering all of our equity compensation plans. In the case of options intended to qualify as “performance based compensation” within the meaning of Section 162(m) of the Internal Revenue Code of 1986, as amended, the committee will consist of two or more “outside directors” within the meaning of Section 162(m) of the Internal Revenue Code of 1986, as amended.
 
The administrator has the power to determine the terms of the awards, including the exercise price, the number of shares subject to each such award, the exercisability of the awards and the form of consideration payable upon exercise. The administrator also has the authority to institute an exchange program whereby the exercise prices of outstanding awards may be reduced, outstanding awards may be surrendered in exchange for awards with a lower exercise price or outstanding awards may be transferred to a third-party.
 
Stock Options.  The plan administrator will determine the exercise price of options granted under our 2007 Equity Incentive Plan, but the exercise price of options granted under our 2007 Equity Incentive Plan must at least be equal to the fair market value of our common stock on the date of grant. The term of an incentive stock option may not exceed ten years, except that with respect to any participant who owns 10% of the voting power of all classes of our outstanding stock as of the grant date, the term must not exceed five years and the exercise price must equal at least 110% of the fair market value on the grant date. The administrator determines the term of all other options.
 
After termination of an employee, director or consultant, he or she may exercise his or her option for the period of time stated in the option agreement. Generally, if termination is due to death or disability, the option will remain exercisable for 12 months. In all other cases, the option will generally remain exercisable for three months. However, an option generally may not be exercised later than the expiration of its term.
 
Stock Appreciation Rights.  Stock appreciation rights may be granted under our 2007 Equity Incentive Plan. Stock appreciation rights allow the recipient to receive the appreciation in the fair


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market value of our common stock between the exercise date and the date of grant. The administrator determines the terms of stock appreciation rights, including when such rights become exercisable and whether to pay the increased appreciation in cash or with shares of our common stock, or a combination thereof. Stock appreciation rights expire under the same rules that apply to stock options.
 
Restricted Stock.  Restricted stock may be granted under our 2007 Equity Incentive Plan. Restricted stock awards are shares of our common stock that vest in accordance with terms and conditions established by the administrator. The administrator will determine the number of shares of restricted stock granted to any employee. The administrator may impose whatever conditions to vesting it determines to be appropriate. For example, the administrator may set restrictions based on the achievement of specific performance goals. Shares of restricted stock that do not vest are subject to our right of repurchase or forfeiture.
 
Restricted Stock Units.  Restricted stock units may be granted under our 2007 Equity Incentive Plan. Restricted stock units are awards of restricted stock, performance shares or performance units that are paid out in installments or on a deferred basis. The administrator determines the terms and conditions of restricted stock units including the vesting criteria and the form and timing of payment.
 
Performance Units and Performance Shares.  Performance units and performance shares may be granted under our 2007 Equity Incentive Plan. Performance units and performance shares are awards that will result in a payment to a participant only if performance goals established by the administrator are achieved or the awards otherwise vest. The administrator will establish organizational or individual performance goals in its discretion, which, depending on the extent to which they are met, will determine the number and/or the value of performance units and performance shares to be paid out to participants. Performance units shall have an initial dollar value established by the administrator prior to the grant date. Performance shares shall have an initial value equal to the fair market value of our common stock on the grant date. Payment for performance units and performance shares may be made in cash or in shares of our common stock with equivalent value, or in some combination, as determined by the administrator.
 
Transfer of Awards.  Unless the administrator provides otherwise, our 2007 Equity Incentive Plan does not allow for the transfer of awards and only the recipient of an award may exercise an award during his or her lifetime.
 
Change of Control Transactions.  Our 2007 Equity Incentive Plan provides that in the event of our change in control, as defined in the 2007 Equity Incentive Plan, each outstanding award will be treated as the administrator determines, including that the successor corporation or its parent or subsidiary will assume or substitute an equivalent award for each outstanding award. The administrator is not required to treat all awards similarly. If there is no assumption or substitution of outstanding awards, the awards will fully vest, all restrictions will lapse and the awards will become fully exercisable. The administrator will provide notice to the recipient that he or she has the right to exercise the option and stock appreciation right as to all of the shares subject to the award, all restrictions on restricted stock will lapse and all performance goals or other vesting requirements for performance shares and units will be deemed achieved at 100% of target levels, and all other terms and conditions met. The option or stock appreciation right will terminate upon the expiration of the period of time the administrator provides in the notice. In the event the service of an outside director is terminated on or following a change in control, other than pursuant to a voluntary resignation, his or her options and stock appreciation rights will fully vest and become immediately exercisable, all restrictions on restricted stock will lapse and all performance goals or other vesting requirements for performance shares and units will be deemed achieved at 100% of target levels, and all other terms and conditions met.
 
Plan Amendments.  Our 2007 Equity Incentive Plan will automatically terminate in 2017, unless we terminate it sooner. In addition, our board of directors has the authority to amend, suspend


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or terminate the 2007 Equity Incentive Plan provided such action does not impair the rights of any participant.
 
Amended and Restated 2003 Incentive Compensation Plan
 
Our Amended and Restated 2003 Incentive Compensation Plan was adopted by our board of directors and approved by our stockholders effective October 2006. Our Amended and Restated 2003 Incentive Compensation Plan provides for the grant of incentive stock options, within the meaning of Section 422 of the Internal Revenue Code, to our employees, and for the grant of nonstatutory stock options, stock grants and stock purchase rights to our employees, directors and consultants. As of December 31, 2006, options to purchase 3,767,495 shares of common stock were outstanding and 602,836 shares were available for future grant under this plan. In March 2007, we reserved an additional 950,000 shares for future grant under this plan.
 
We will not grant any additional awards under our Amended and Restated 2003 Incentive Compensation Plan following this offering. Instead, we will grant options under our 2007 Equity Incentive Plan. However, our Amended and Restated 2003 Incentive Compensation Plan will continue to govern the terms and conditions of all outstanding options and stock purchase rights previously granted under the Amended and Restated 2003 Incentive Compensation Plan following this offering.
 
Our Amended and Restated 2003 Incentive Compensation Plan provides that in the event of a proposed sale of all or substantially all of our assets or any merger or consolidation in which we are not the surviving corporation, the successor entity may, with the consent of our board of directors or a committee designated by our board of directors, assume each outstanding option or substitute an equivalent option or right. If the successor entity does not assume or substitute the outstanding options, then (i) each option will terminate upon the consummation of the sale, merger or consolidation and (ii) our board of directors, or a committee designated by our board of directors, has the authority, within its discretion, to provide for the acceleration of vesting or exercisability of options and other awards granted by us under our Amended and Restated 2003 Incentive Compensation Plan. Our board of directors, or a committee designated by our board of directors, is required to give notice of any proposed sale, merger or consolidation a reasonable time prior to the closing date of such sale, merger or consolidation in order to give our option holders an opportunity to exercise any options that are then exercisable before the closing of the transaction.
 
401(k) Plan
 
We have established a tax-qualified employee savings and retirement plan for all employees who satisfy certain eligibility requirements, including requirements relating to age and length of service. Under our 401(k) plan, employees may elect to reduce their current compensation by up to 15% or the statutory limit, $15,000 in 2006, whichever is less, and have us contribute the amount of this reduction to the 401(k) plan. In addition, beginning January 1, 2007, we match employee deferrals as follows: a dollar-for-dollar (100%) match on an eligible employee’s deferral that does not exceed three percent (3%) of compensation for the year and a fifty percent (50%) match on the next two percent (2%) of the employee’s deferrals. We intend for the 401(k) plan to qualify under Section 401 of the Code so that contributions by employees or by us to the 401(k) plan, and income earned on plan contributions, are not taxable to employees until withdrawn from the 401(k) plan.
 
Limitation on Liability and Indemnification Matters
 
Our amended and restated certificate of incorporation, which will be in effect upon the completion of this offering, contains provisions that limit the liability of our directors for monetary damages to the fullest extent permitted by Delaware law. Consequently, our directors will not be personally liable to us or our stockholders for monetary damages for any breach of fiduciary duties as directors, except liability for:
 
  •  any breach of the director’s duty of loyalty to us or our stockholders;


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  •  any act or omission not in good faith or that involves intentional misconduct or a knowing violation of law;
 
  •  unlawful payments of dividends or unlawful stock repurchases or redemptions as provided in Section 174 of the Delaware General Corporation Law; or
 
  •  any transaction from which the director derived an improper personal benefit.
 
Our amended and restated certificate of incorporation and amended and restated bylaws to be in effect upon the completion of this offering provide that we are required to indemnify our directors and officers, in each case to the fullest extent permitted by Delaware law. Our amended and restated bylaws also provide that we are obligated to advance expenses incurred by a director or officer in advance of the final disposition of any action or proceeding, and permit us to secure insurance on behalf of any officer, director, employee or other agent for any liability arising out of his or her actions in that capacity regardless of whether we would otherwise be permitted to indemnify him or her under the provisions of Delaware law. We have entered and expect to continue to enter into agreements to indemnify our directors, executive officers and other employees as determined by our board of directors. With specified exceptions, these agreements provide for indemnification for related expenses including, among other things, attorneys’ fees, judgments, fines and settlement amounts incurred by any of these individuals in any action or proceeding. We believe that these bylaw provisions and indemnification agreements are necessary to attract and retain qualified persons as directors and officers. We also maintain directors’ and officers’ liability insurance.
 
The limitation of liability and indemnification provisions in our amended and restated certificate of incorporation and amended and restated bylaws may discourage stockholders from bringing a lawsuit against our directors and officers for breach of their fiduciary duty. They may also reduce the likelihood of derivative litigation against our directors and officers, even though an action, if successful, might benefit us and other stockholders. Further, a stockholder’s investment may be adversely affected to the extent that we pay the costs of settlement and damage awards against directors and officers as required by these indemnification provisions. At present, there is no pending litigation or proceeding involving any of our directors, officers or employees for which indemnification is sought, and we are not aware of any threatened litigation that may result in claims for indemnification.


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CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS
 
In addition to the director and executive compensation arrangements discussed above under “Management,” the following is a description of transactions since January 1, 2004, to which we have been a party in which the amount involved exceeded or will exceed $120,000 and in which any of our directors, executive officers, beneficial holders of more than 5% of our capital stock, or entities affiliated with them, had or will have a direct or indirect material interest.
 
Preferred Stock Issuances
 
In July 2006, we issued an aggregate of 26,579,970 shares of our Series B preferred stock at a purchase price of $4.8909 per share to certain accredited investors in a private placement transaction. As a result of this transaction, entities affiliated with Goldman, Sachs & Co., one of the lead underwriters of this offering, became holders of more than five percent of our common stock. The following table sets forth the aggregate number of the securities acquired by these entities:
 
         
    Series B Preferred
 
Investor
 
Stock Purchased
 
 
GS Capital Partners V Fund, L.P. 
    13,966,505  
GS Capital Partners V Offshore Fund, L.P. 
    7,214,515  
GS Capital Partners V Institutional, L.P. 
    4,789,316  
GS Capital Partners V GmbH & Co. KG
    553,716  
 
Investors’ Rights Agreement
 
In July 2006, we entered into an amended and restated investors’ rights agreement with the purchasers of our preferred stock that provides for certain rights relating to the registration of their shares of common stock issued upon conversion of their preferred stock. The holders of 5% of our capital stock listed in the above table are parties to this agreement, as is another holder of 5% of our capital stock, Oak Investment Partners XII, L.P. See “Description of Capital Stock — Registration Rights” for additional information.
 
Stockholders’ Agreement
 
In July 2006, we entered into a stockholders’ agreement with the purchasers of our preferred stock and certain holders of our common stock that provides for certain rights of first refusal with respect to the stock subject to the agreement, certain rights relating to the co-sale of such securities and certain rights with respect to the voting of the securities subject to the agreement. Pursuant to this agreement, the parties agreed to vote any shares of our common stock held by them in favor of directors nominated by a majority of the holders of the then outstanding shares of common stock held by the parties to the agreement. The parties also agreed to vote any shares of our preferred stock held by them in favor of four directors designated by GS Capital Partners V Institutional, L.P. and GS Capital Partners V Fund, L.P. This agreement and all rights thereunder, including rights to designate directors, automatically terminate upon completion of this offering, and members previously elected to our board of directors pursuant to the agreement will continue to serve as directors until their successors are duly elected by the holders of our common stock.
 
Stockholder Tender Agreement and Escrow
 
In May 2006, we entered into a purchase agreement for the sale of our Series B preferred stock, which transaction closed in July 2006. The purchase agreement provided for an aggregate of $102.1 million of the proceeds from the sale of the Series B preferred stock to be used by us to repurchase shares of our common stock from existing stockholders, holders of vested stock options to purchase shares of our common stock and warrant holders at a price not to exceed $4.8909 per share. In connection with this transaction, we entered into a stockholder tender agreement with certain


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of our stockholders. Pursuant to this agreement, in July 2006 we repurchased the following common stock and vested stock options held by certain individuals who were serving as directors and/or executive officers at that time, or entities affiliated with these individuals, at a purchase price of $4.8909 per share:
 
  •  1,134,866 shares of our common stock from Michael and Lauren Gordon;
 
  •  50,000 shares of our common stock from Thunder Road Capital LLC. Michael M. Gordon is a managing member of Thunder Road Capital LLC;
 
  •  2,951,872 shares of our common stock from Kaplan Group Investments LLC. Allan M. Kaplan is a managing member of Kaplan Group Investments LLC;
 
  •  244,579 shares of our common stock from Cocoon Capital LLC. Nathan F. Raciborski and Allan M. Kaplan are managing members of Cocoon Capital LLC;
 
  •  1,354,415 shares of our common stock from the Raciborski Group Limited Partnership;
 
  •  1,455,791 shares of common stock from Nathan F. Raciborski;
 
  •  1,735,871 shares of our common stock from the Rinehart Family Trust dated May of 1999;
 
  •  352,884 shares of our common stock from Erik W. Gabler and Nicole A. Gabler;
 
  •  123,981 shares of our common stock subject to a vested option held by Erik W. Gabler, with an exercise price of $0.21 per share; and
 
  •  44,590 shares of our common stock subject to a vested option held by Louis A. Greco III, with an exercise price of $0.21 per share.
 
The purchase agreement also provided for an aggregate of $10.2 million of the funds used to repurchase shares to be held in an escrow account to serve as security for the indemnification obligations of the tendering stockholders under the purchase agreement. We entered into a related escrow agreement in July 2006, which provides for the establishment of an escrow fund pursuant to the terms of the purchase agreement and describes the process by which indemnified parties may make a claim against the escrow fund. The purchasers of our Series B preferred stock and their affiliates and their respective officers, directors and employees are indemnified parties under the escrow agreement. The following table sets forth the holders of at least 5% of our capital stock which are indemnified parties under the purchase agreement and the escrow agreement:
 
         
Investor
     
 
GS Capital Partners V Fund, L.P.
       
GS Capital Partners V Offshore Fund, L.P.
       
GS Capital Partners V GmbH & Co. KG
       
GS Capital Partners V Institutional, L.P.
       
Oak Investment Partners XII, L.P.
       
 
Any amounts in escrow not paid in respect to claims for indemnification under the purchase agreement, and not subject to pending claims for indemnification, are to be released to the tendering stockholders upon the earliest to occur of (i) the eighteen month anniversary of the closing of the Series B preferred stock financing, which occurred in July 2006, (ii) the closing of a liquidation as defined in our amended and restated certificate of incorporation or (iii) the closing of this offering.
 
Transactions With Entities Affiliated With Our Co-Founders
 
Vendor Relationship
 
Our primary provider of server hardware to date has been MicroPro Logistics, which is a wholly owned subsidiary of Earthworks Underground Specialists, Inc. Nathan F. Raciborski owned all of the outstanding shares of Earthworks until December 2006. We purchased equipment from MicroPro


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totaling $2.1 million in 2004, $7.4 million in 2005, and $29.9 million in 2006. In December 2006, Mr. Raciborski sold a portion of his shares in Earthworks and MicroPro to an unrelated third-party investor and contributed the balance of his shares to Kairos Foundation, a private charitable organization not controlled by Mr. Raciborski. Earthworks currently owes approximately $800,000 to Mr. Raciborski, pending a final accounting analysis of Earthworks’ retained earnings balance. As a result, Mr. Raciborski may be deemed to hold a continuing financial interest in Earthworks.
 
Customer Relationships
 
Nathan F. Raciborski owned 25% of the outstanding shares of Priority Networks, Inc., which is one of our customers. We recorded revenue from Priority Networks of $125,298 in 2004, $210,701 in 2005 and $260,476 in 2006. In August 2006, Priority Networks, Inc. was acquired by Smart City Holdings, LLC, and Mr. Raciborski no longer has any ownership interest in Priority Networks, Inc.
 
William H. Rinehart, Allan M. Kaplan and Nathan F. Raciborski each own approximately 25% of the outstanding stock of Four Point Play, Ltd., a subsidiary of which is one of our customers. We recorded revenues from that subsidiary of approximately $38,537 in 2004, $20,874 in 2005 and $7,720 in 2006.
 
Lending and Lease Transactions
 
We borrowed $100,000 in January 2003, $275,000 in April 2003, $425,000 in March 2004, $500,000 in November 2004 and $400,000 in April 2005 from the Raciborski Family Foundation. Nathan F. Raciborski is the founder of the Raciborski Family Foundation, but does not hold investment authority over this entity. Payments related to those notes during 2004 totaled $295,699, of which $202,167 was principal and the balance was interest. Payments related to those notes during 2005 totaled $1,617,940, of which $1,497,833 was principal and the balance was interest. All notes accrued interest at a rate of 14%. We paid off these notes in full in August 2005.
 
Nathan F. Raciborski loaned $100,000 to Limelight Mainstreet Tempe, LLC, our wholly owned subsidiary, in 2002 and accrued interest in 2003 and 2004 in the amount of $40,111. Mr. Raciborski also entered into an equipment rental agreement with Limelight Mainstreet and accrued $60,000 of rental payments under the equipment rental agreement in 2004. In 2005, Mr. Raciborski loaned an additional $114,444 to Limelight Mainstreet in exchange for the equipment that had been previously rented. We made a $20,000 principal payment to Mr. Raciborski in June of 2005. Interest accrued at 20% for a total interest expense of $33,960 in 2005. The total loan balance of principal and accrued interest at the year end of 2005 was $270,187. Interest accrued at 20% for a total interest expense of $21,065 in 2006. In July 2006, we paid the total loan balance of principal and accrued interest of $291,251 in full.
 
We paid Thunder Road Capital fees of $84,000 in 2004 and $77,000 in 2005 for providing guarantees to various third-party lessors in support of our leases with those lessors. Allan M. Kaplan and Michael M. Gordon are members of Thunder Road Capital and the sole members who participated in the transaction with us.
 
We entered into two 12-month term capital leases with Ridgeline Capital, LLC. Michael M. Gordon is the managing member of Ridgeline. The first capital lease commenced in February 2005 for network equipment valued at $950,207 with an implied interest rate of 18% and the second capital lease commenced in March 2005 for network equipment valued at $289,894 with an implied interest rate of 19%. These two capital leases were fully paid off in August 2005, and we assumed title to the leased equipment. Interest expense, including loan origination fees, relating to these two capital leases was $129,901 in 2005.
 
We lease approximately 1,000 square feet of office space from Cocoon Capital, LLC in Phoenix, Arizona. Cocoon Capital is 50% owned each by Nathan F. Raciborski and Allan M. Kaplan. We paid rent to Cocoon Capital for this facility totaling $38,400 in 2004, $25,600 in 2005 and $19,800 in 2006.


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In addition, Cocoon Capital is the owner of record for the T-1 and phone lines that we use at this location. We reimbursed Cocoon Capital for those expenses in the aggregate of $41,790 in 2004. Cocoon Capital sold the building in late 2006, but has entered into a month-to-month lease at $1,200 per month. We have agreed to these month to month expenses, but we have not entered any formal lease agreement. We expect to vacate this facility by the end of 2007.
 
Stock Option Grants
 
Certain stock option grants made in 2006 to our directors and executive officers and related option grant policies are described in this prospectus under the captions “Management — Director Compensation” and “Management — Option Grants in Last Fiscal Year.” Pursuant to our director and executive officer compensation policy or prior arrangements, we granted the following options to certain executive officers in 2004 and 2005:
 
  •  In February 2005, we granted Michael M. Gordon an option to purchase 250,000 shares of our common stock at an exercise price of $0.40 per share.
 
  •  In February 2005, we granted Nathan F. Raciborski an option to purchase 500,000 shares of our common stock at an exercise price of $0.40 per share.
 
  •  In February 2005, we granted William Rinehart an option to purchase 275,000 shares of our common stock at an exercise price of $0.40 per share.
 
  •  In October 2005, we granted Eric W. Gabler an option to purchase 100,000 shares of our common stock at an exercise price of $0.40 per share.
 
  •  In October 2005, we granted Louis A. Greco III an option to purchase 70,000 shares of our common stock at an exercise price of $0.40 per share.
 
Employment and Change of Control Agreements with Executive Officers
 
We have entered into employment and change of control arrangement with certain of our executive officers as described under the caption “Management — Employment Agreements and Change of Control Arrangements.”
 
Indemnification of Officers and Directors
 
Upon completion of this offering, our amended and restated certificate of incorporation and bylaws will provide that we will indemnify each of our directors and officers to the fullest extent permitted by the Delaware General Corporation Law. Further, prior to completion of this offering, we intend to enter into indemnification agreements with each of our directors and officers. For further information, see “Management — Limitations of Liability and Indemnification Matters.”
 
Policies and Procedures for Related Party Transactions
 
As provided by our audit committee charter, our audit committee must review and approve in advance any related party transaction. All of our directors, officers and employees are required to report to our audit committee any such related party transaction prior to its completion. Prior to the creation of our audit committee, our full board of directors reviewed related party transactions. Each of the related party transactions described above that were submitted to our board of directors were approved by disinterested members of our board of directors after disclosure of the interest of the related party in the transaction.


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PRINCIPAL AND SELLING STOCKHOLDERS
 
The following table sets forth certain information with respect to the beneficial ownership of our common stock as of December 31, 2006 and as adjusted to reflect the sale of the shares of our common stock in this offering, for:
 
  •  each person known by us to beneficially own more than 5% of our outstanding shares of common stock;
 
  •  each of our named executive officers;
 
  •  each of our directors;
 
  •  all of our directors and executive officers as a group; and
 
  •  each selling stockholder.
 
Beneficial ownership is determined in accordance with the rules of the SEC and generally includes voting or investment power with respect to securities. Except as indicated in the footnotes to this table and pursuant to state community property laws, we believe, based on the information furnished to us, that the persons named in the table have sole voting and investment power with respect to all shares reflected as beneficially owned by them. In computing the number of shares beneficially owned by a person and the percentage ownership of that person, shares of common stock that could be issued upon the exercise of outstanding options held by that person that are currently exercisable or exercisable within 60 days of December 31, 2006 are considered outstanding. These shares, however, are not considered outstanding when computing the percentage ownership of any other person. Percentage of ownership is based on 44,514,964 shares of our common stock outstanding on December 31, 2006, assuming conversion of all shares of convertible preferred stock, and           shares of common stock to be outstanding after completion of this offering. This table assumes no exercise of the underwriters’ over-allotment option. Beneficial ownership representing less than 1% is denoted with an asterisk (*).
 
Unless otherwise indicated, the address for each of the stockholders in the table below is c/o Limelight Networks, Inc., 2220 W. 14th Street, Tempe, Arizona 85281.
 
                                         
                Shares
             
   
Shares Beneficially Owned Prior to Offering
    Being
   
Shares Beneficially Owned After Offering
 
Beneficial Owner
 
Number
   
Percent
   
Offered
   
Number
   
Percent
 
 
5% Stockholders
                                       
GS Capital Partners Entities(1)
    20,181,661       45.3 %                        
Oak Investment Partners XII, Limited Partnership(2)
    4,089,227       9.2                          
Nathan Raciborski Grantor Retained Annuity Trust(3)
    2,310,207       5.2                          
Executive Officers and Directors
                                       
Jeffrey W. Lunsford
    1,000,000       2.3                          
Nathan F. Raciborski(4)
    3,598,260       8.1                          
Matthew Hale
    230,000       *                          
Michael M. Gordon(5)
    1,809,867       4.1                          
Allan M. Kaplan(6)
    2,788,054       6.3                          
William H. Rinehart(7)
    2,360,871       5.3                          
Erik W. Gabler(8)
    249,322       *                          
Louis A. Greco III(9)
    48,860       *                          
Joseph H. Gleberman(10)
    20,181,661       45.3                          
Robert Goad
                                   
Fredric W. Harman(11)
    4,089,227       9.2                          


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                Shares
             
   
Shares Beneficially Owned Prior to Offering
    Being
   
Shares Beneficially Owned After Offering
 
Beneficial Owner
 
Number
   
Percent
   
Offered
   
Number
   
Percent
 
 
Peter J. Perrone(12)
    20,181,661       45.3                          
David C. Peterschmidt
                                   
Gary Valenzuela
                                   
All directors and executive officers as a group (14 persons)(13)
    36,193,069       81.2                          
Other Selling Stockholders
                                       
 
(1) Funds affiliated with or managed by Goldman, Sachs & Co. are GS Capital Partners V Fund, L.P. (10,626,855 shares of Series B Preferred Stock), GS Capital Partners V Offshore Fund, L.P. (5,489,391 shares of Series B Preferred Stock), GS Capital Partners V Institutional, L.P. (3,644,102 shares of Series B Preferred Stock) and GS Capital Partners V GmbH & Co. KG (421,313 shares of Series B Preferred Stock) (the “Goldman Sachs Funds”). Voting and dispositive power for the shares held by GS Capital Partners V Fund, L.P. is held by its general partner GSCP V Advisors, L.L.C., which disclaims beneficial ownership of the shares held by GS Capital Partners V Fund, L.P. except to the extent of its pecuniary interest therein, if any. Voting and dispositive power for the shares held by GS Capital Partners V Offshore Fund, L.P. is held by its general partner GSCP V Offshore Advisors, L.L.C., which disclaims beneficial ownership of the shares held by GS Capital Partners V Offshore Fund, L.P. except to the extent of its pecuniary interest therein, if any. Voting and dispositive power for the shares held by GS Capital Partners V Institutional, L.P. is held by its general partner GS Advisors V., L.L.C., which disclaims beneficial ownership of the shares held by GS Capital Partners V Institutional, L.P. except to the extent of its pecuniary interest therein, if any. Voting and dispositive power for the shares held by GS Capital Partners V GmbH & CO. KG is held by its managing limited partner GS Advisors V., L.L.C., which disclaims beneficial ownership of the shares held by GS Capital Partners V GmbH & CO. KG except to the extent of its pecuniary interest therein, if any. Goldman, Sachs & Co. is a direct and indirect, wholly owned subsidiary of The Goldman Sachs Group, Inc. and is an underwriter of this offering. Goldman, Sachs & Co. is an investment manager of GSCP V Advisors, L.L.C., GSCP V Offshore Advisors, L.L.C. and GS Advisors V., L.L.C. The Goldman Sachs Group, Inc., and certain affiliates, including Goldman, Sachs & Co. and the Goldman Sachs Funds, may be deemed to directly or indirectly beneficially own an aggregate of 20,181,661 shares of Series B Preferred Stock which are owned directly or indirectly by the Goldman Sachs Funds. The general partner, managing general partner or managing limited partner of the Goldman Sachs Funds are affiliates of the Goldman Sachs Group, Inc. and Goldman, Sachs & Co. The Goldman Sachs Group, Inc., Goldman, Sachs & Co. and the Goldman Sachs Funds and their general partner, managing general partner or managing limited partner share voting and investment power with certain of their respective affiliates. The Goldman Sachs Group, Inc. and Goldman, Sachs & Co. each disclaim beneficial ownership of the shares held by the Goldman Sachs Funds, except to the extent of its pecuniary interest therein, if any. The address of each of the GS Capital Partners entities is c/o Goldman Sachs & Co., One New York Plaza, 38th Floor, New York, NY 10004, Attn: Ben Adler.
 
(2) The names of the parties who share power to vote and share power to dispose of the shares held by Oak Investment Partners XII, Limited Partnership are Fredric W. Harman, Bandel L. Carano, Ann H. Lamont, and Edward F. Glassmeyer, all of whom are executive managing members of Oak Associates XII, LLC, the General Partner of Oak Investment Partners XII, Limited Partnership. Each such individual disclaims beneficial ownership of the securities held by such partnership in which such individual does not have a pecuniary interest. The address of Oak Investment Partners XII, L.P. is 525 University Avenue, Suite 1300, Palo Alto, CA 94301, Attn: Fredric W. Harman.

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(3) Nathan F. Raciborski is a trustee of, and holds voting and dispositive power for the shares held by, the Nathan Raciborski Grantor Retained Annuity Trust Dated October 17, 2006.
 
(4) Includes 2,310,207 shares of common stock held by the Nathan Raciborski Grantor Retained Annuity Trust dated October 17, 2006, 1,125,000 shares of common stock held by Nathan Raciborski and 163,053 shares of common stock held by Cocoon Capital LLC. Nathan F. Raciborski is a trustee of the Nathan Raciborski Grantor Retained Annuity Trust dated October 17, 2006 and a member manager of Cocoon Capital LLC. Mr. Raciborski holds voting and dispositive power for the shares held by the Nathan Raciborski Grantor Retained Annuity Trust Dated October 17, 2006 and for the shares held by Cocoon Capital LLC. Mr. Raciborski disclaims beneficial ownership of the shares held by Cocoon Capital LLC, except to the extent of his pecuniary interest therein.
 
(5) Includes 1,384,867 shares of common stock held by Michael and Lauren Gordon, 50,000 shares of common stock held by Thunder Road Capital LLC, 75,000 shares of common stock held by the Buttercup Irrevocable Trust, 75,000 shares of common stock held by the Dandelion Irrevocable Trust, 75,000 shares of common stock held by the Sunshine Irrevocable Trust, 75,000 shares of common stock held by the Tiger Irrevocable Trust and 75,000 shares of common stock held by the Tigerlily Irrevocable Trust. Michael M. Gordon is a managing member of Thunder Road Capital LLC and a trustee of the Buttercup Irrevocable Trust, Dandelion Irrevocable Trust, Sunshine Irrevocable Trust, Tiger Irrevocable Trust and Tigerlily Irrevocable Trust. Mr. Gordon holds voting and dispositive power for the shares held by Thunder Road Capital LLC, the Buttercup Irrevocable Trust, the Dandelion Irrevocable Trust, the Sunshine Irrevocable Trust, the Tiger Irrevocable Trust and the Tigerlily Irrevocable Trust. Mr. Gordon disclaims beneficial ownership of the shares held by Thunder Road Capital LLC, except to the extent of his pecuniary interest therein, and of the shares held by the Buttercup Irrevocable Trust, the Dandelion Irrevocable Trust, the Sunshine Irrevocable Trust, the Tiger Irrevocable Trust and the Tigerlily Irrevocable Trust.
 
(6) Includes 2,000,001 shares of common stock held by the Allan Kaplan Grantor Retained Annuity Trust Dated October 17, 2006, 625,000 shares of common stock held by Allan Kaplan and 163,053 shares of common stock held by Cocoon Capital LLC. Allan M. Kaplan is a trustee of the Allan Kaplan Grantor Retained Annuity Trust dated October 17, 2006 and a managing member of Cocoon Capital LLC. Mr. Kaplan holds voting and dispositive power for the shares held by the Allan Kaplan Grantor Retained Annuity Trust Dated October 17, 2006 and for the shares held by Cocoon Capital LLC. Mr. Kaplan disclaims beneficial ownership of the shares held by Cocoon Capital LLC, except to the extent of his pecuniary interest therein.
 
(7) Includes 2,360,871 shares of common stock held by the Rinehart Family Trust dated May of 1999. William H. Rinehart is a trustee of the Rinehart Family Trust dated May of 1999. Mr. Rinehart holds voting and dispositive power for the shares held by the Rinehart Family Trust dated May of 1999.
 
(8) Includes 10,743 shares issuable upon exercise of options that are exercisable within 60 days of December 31, 2006.
 
(9) Includes 23,450 shares issuable upon exercise of options that are exercisable within 60 days of December 31, 2006.
 
(10) See footnote (1) above. Joseph H. Gleberman is a managing director of Goldman, Sachs & Co. Mr. Gleberman holds voting and dispositive power for the shares held by GS Capital Partners V Fund, L.P., GS Capital Partners V Offshore Fund, L.P., GS Capital Partners V Institutional, L.P. and GS Capital Partners V GmbH & Co. KG. Mr. Gleberman disclaims beneficial ownership of the shares held by GS Capital Partners V Fund, L.P., GS Capital Partners V Offshore Fund, L.P., GS Capital Partners V Institutional, L.P. and GS Capital Partners V GmbH & Co. KG except to the extent of his pecuniary interest therein.
 
(11) See footnote (2) above. Fredric W. Harman has voting and dispositive power for the shares held by Oak Investment Partners XII, Limited Partnership. Mr. Harman disclaims beneficial ownership of the securities held by such partnership in which he does not have a pecuniary interest.


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(12) See footnote (1) above. Peter J. Perrone is a vice president of Goldman, Sachs & Co. Mr. Perrone does not hold voting or dispositive power for the shares held by GS Capital Partners V Fund, L.P., GS Capital Partners V Offshore Fund, L.P., GS Capital Partners V Institutional, L.P. and GS Capital Partners V GmbH & Co. KG. Mr. Perrone disclaims beneficial ownership of the shares held by GS Capital Partners V Fund, L.P., GS Capital Partners V Offshore Fund, L.P., GS Capital Partners V Institutional, L.P. and GS Capital Partners V GmbH & Co. KG except to the extent of his pecuniary interest therein.
 
(13) Includes an aggregate of 34,193 shares issuable upon exercise of options that are exercisable within 60 days of December 31, 2006.


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DESCRIPTION OF CAPITAL STOCK
 
General
 
We are authorized to issue 100,000,000 shares of common stock, $0.001 par value, and 5,000,000 shares of undesignated preferred stock, $0.001 par value.
 
Common Stock
 
Assuming the conversion of each outstanding share of preferred stock into one share of common stock upon the closing of this offering, as of December 31, 2006, we had 44,514,964 shares of common stock outstanding that were held of record by approximately 64 stockholders.
 
The holders of common stock are entitled to one vote per share on all matters to be voted upon by the stockholders. Subject to preferences that may be applicable to any outstanding preferred stock, the holders of common stock are entitled to receive ratably any dividends that may be declared from time to time by the board of directors out of funds legally available for that purpose. In the event of our liquidation, dissolution or winding up, the holders of common stock are entitled to share ratably in all assets remaining after payment of liabilities, subject to prior distribution rights of preferred stock then outstanding. The common stock has no preemptive or conversion rights or other subscription rights. There are no redemption or sinking fund provisions applicable to the common stock. All outstanding shares of common stock are fully paid and nonassessable, and the shares of common stock to be issued upon the closing of this offering will be fully paid and nonassessable.
 
Preferred Stock
 
Upon the closing of this offering, our board of directors will have the authority, without action by our stockholders, to designate and issue up to 5,000,000 shares of preferred stock in one or more series. The board of directors may also designate the rights, preferences and privileges of each series of preferred stock, any or all of which may be greater than the rights of the common stock. It is not possible to state the actual effect of the issuance of any shares of preferred stock upon the rights of holders of the common stock until the board of directors determines the specific rights of the holders of the preferred stock. However, these effects might include:
 
  •  restricting dividends on the common stock;
 
  •  diluting the voting power of the common stock;
 
  •  impairing the liquidation rights of the common stock; and
 
  •  delaying or preventing a change in control of our company without further action by the stockholders.
 
We have no present plans to issue any shares of preferred stock.
 
Warrants
 
As of December 31, 2006, a warrant to purchase a total of 65,390 shares of our common stock was issued and outstanding at an exercise price of $0.22 per share. This warrant will expire upon the closing of this offering unless exercised prior to such date.
 
Registration Rights
 
Following this offering, the holders of 29,960,170 shares of common stock issuable upon conversion of preferred stock or their permitted transferees are entitled to rights with respect to registration of these shares under the Securities Act of 1933, as amended. These rights are provided under the terms of our amended and restated investor rights agreement. Under these registration rights, holders of the then outstanding registrable securities may require on two occasions that we


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register their shares for public resale. Such registration requires the election of the holders of registrable securities holding at least 25% of such registrable securities. We are obligated to register these shares only if the requesting holders request the registration of the number of registrable securities with an anticipated offering price of at least $10,000,000. In addition, holders of registrable securities holding at least 5% of such registrable securities may require that we register their shares for public resale on Form S-3 or similar short-form registration, if we are eligible to use Form S-3 or similar short-form registration, and the value of the securities to be registered is at least $5,000,000. If we elect to register any of our shares of common stock for any public offering, the holders of registrable securities are entitled to include shares of common stock in the registration. However, we may reduce the number of shares proposed to be registered in view of market conditions, provided that we may not reduce the number of registrable securities included in any such registration below 20% of the total number of shares included in such offering (except for a registration relating to our initial public offering, from which all registrable securities may be excluded). We will pay all expenses in connection with any registration described herein, other than underwriting discounts and commissions. These rights will terminate five years after the closing of this offering and prior to then, any holder shall cease to have registration rights once that holder may sell all of its registrable securities under Rule 144 during any three-month period.
 
Anti-Takeover Effects of Delaware Law and Our Certificate of Incorporation and Bylaws
 
Our amended and restated certificate of incorporation and our amended and restated bylaws contain certain provisions that could have the effect of delaying, deferring or discouraging another party from acquiring control of us. These provisions and certain provisions of Delaware law, which are summarized below, are expected to discourage coercive takeover practices and inadequate takeover bids. These provisions are also designed, in part, to encourage persons seeking to acquire control of us to negotiate first with our board of directors. We believe that the benefits of increased protection of our potential ability to negotiate more favorable terms with an unfriendly or unsolicited acquirer outweigh the disadvantages of discouraging a proposal to acquire us.
 
Undesignated Preferred Stock
 
As discussed above, our board of directors has the ability to issue preferred stock with voting or other rights or preferences that could impede the success of any attempt to change control of us. These and other provisions may have the effect of deterring hostile takeovers or delaying changes in control or management of our company.
 
Limits on Ability of Stockholders to Act by Written Consent or Call a Special Meeting
 
Our amended and restated certificate of incorporation provides that our stockholders may not act by written consent, which may lengthen the amount of time required to take stockholder actions. As a result, a holder controlling a majority of our capital stock would not be able to amend our bylaws or remove directors without holding a meeting of our stockholders called in accordance with our bylaws.
 
In addition, our amended and restated bylaws provide that special meetings of the stockholders may be called only by the chairperson of the board, the chief executive officer or our board of directors. Stockholders may not call a special meeting, which may delay the ability of our stockholders to force consideration of a proposal or for holders controlling a majority of our capital stock to take any action, including the removal of directors.
 
Requirements for Advance Notification of Stockholder Nominations and Proposals
 
Our amended and restated bylaws establish advance notice procedures with respect to stockholder proposals and the nomination of candidates for election as directors, other than nominations made by or at the direction of our board of directors or a committee of our board of directors. These provisions may have the effect of precluding the conduct of certain business at a meeting if the proper


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procedures are not followed. These provisions may also discourage or deter a potential acquirer from conducting a solicitation of proxies to elect the acquirer’s own slate of directors or otherwise attempting to obtain control of our company.
 
Board Classification
 
Our board of directors is divided into three classes, one class of which is elected each year by our stockholders. The directors in each class will serve for a three-year term. For more information on the classified board, see “Management — Board of Directors.” Our classified board may tend to discourage a third party from making a tender offer or otherwise attempting to obtain control of us, because it generally makes it more difficult for stockholders to replace a majority of the directors.
 
No Cumulative Voting
 
Our amended and restated certificate of incorporation and amended and restated bylaws do not permit cumulative voting in the election of directors. Cumulative voting allows a stockholder to vote a portion or all of its shares for one or more candidates for seats on the board of directors. Without cumulative voting, a minority stockholder may not be able to gain as many seats on our board of directors as the stockholder would be able to gain if cumulative voting were permitted. The absence of cumulative voting makes it more difficult for a minority stockholder to gain a seat on our board of directors to influence our board’s decision regarding a takeover.
 
Amendment of Charter Provisions
 
The amendment of the above provisions of our amended and restated certificate of incorporation requires approval by holders of at least two-thirds of our outstanding capital stock entitled to vote generally in the election of directors.
 
Delaware Anti-Takeover Statute
 
We are subject to the provisions of Section 203 of the Delaware General Corporation Law regulating corporate takeovers. In general, Section 203 prohibits a publicly held Delaware corporation from engaging, under certain circumstances, in a business combination with an interested stockholder for a period of three years following the date the person became an interested stockholder unless:
 
  •  prior to the date of the transaction, our board of directors approved either the business combination or the transaction which resulted in the stockholder becoming an interested stockholder;
 
  •  upon completion of the transaction that resulted in the stockholder becoming an interested stockholder, the interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced, calculated as provided under Section 203; or
 
  •  at or subsequent to the date of the transaction, the business combination is approved by our board of directors and authorized at an annual or special meeting of stockholders, and not by written consent, by the affirmative vote of at least two-thirds of the outstanding voting stock which is not owned by the interested stockholder.
 
Generally, a business combination includes a merger, asset or stock sale or other transaction resulting in a financial benefit to the interested stockholder. An interested stockholder is a person who, together with affiliates and associates, owns or, within three years prior to the determination of interested stockholder status, did own 15% or more of a corporation’s outstanding voting stock. We expect the existence of this provision to have an anti-takeover effect with respect to transactions our board of directors does not approve in advance. We also anticipate that Section 203 may also discourage attempts that might result in a premium over the market price for the shares of common stock held by stockholders.


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The provisions of Delaware law and the provisions of our amended and restated certificate of incorporation and amended and restated bylaws, could have the effect of discouraging others from attempting hostile takeovers and, as a consequence, they might also inhibit temporary fluctuations in the market price of our common stock that often result from actual or rumored hostile takeover attempts. These provisions might also have the effect of preventing changes in our management. It is possible that these provisions could make it more difficult to accomplish transactions that stockholders might otherwise deem to be in their best interests.
 
Transfer Agent and Registrar
 
Our transfer agent and registrar for our common stock is          .
 
Listing
 
We have applied to list our common stock for quotation on the Nasdaq Global Market under the trading symbol “LLNW.”


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SHARES ELIGIBLE FOR FUTURE SALE
 
Immediately prior to this offering, there has been no public market for our stock. We cannot predict the effect, if any, that market sales of shares or the availability of shares for sale will have on the market price prevailing from time to time. Furthermore, since only a limited number of shares will be available for sale shortly after the offering because of contractual and legal restrictions on resale described below, sales of our common stock in the public market after the restrictions lapse as described below, or the perception that those sales may occur, could cause the prevailing market price to decrease or to be lower than it might be in the absence of those sales or perceptions.
 
Upon completion of this offering, we will have outstanding           shares of common stock. Of these shares, all           shares of common stock being sold in this offering, plus any additional shares sold upon exercise of the underwriters’ over-allotment option, will be freely tradable, other than by any of our “affiliates” as defined in Rule 144(a) under the Securities Act, without restriction or registration under the Securities Act. All remaining shares were issued and sold by us in private transactions and are eligible for public sale if registered under the Securities Act or sold in accordance with Rule 144 or Rule 701 under the Securities Act. These remaining shares are “restricted securities” within the meaning of Rule 144 under the Securities Act.
 
Lock-up Agreements
 
In connection with this offering, we and our officers, directors, and holders of [all] of our common stock have agreed with the underwriters, subject to certain exceptions, not to dispose of, hedge or lend any of our common stock or securities convertible into or exchangeable for shares of common stock during the period from the date of this prospectus continuing through the date 180 days after the date of this prospectus, except with the prior written consent of Goldman, Sachs & Co. This agreement is subject to certain exceptions and does not apply to the issuance by us of shares under any existing employee benefit plans.
 
The 180-day restricted period described in the preceding paragraph will be automatically extended if: (1) during the last 17 days of the 180-day restricted period we issue an earnings release or announce material news or a material event; or (2) prior to the expiration of the 180-day restricted period, we announce that we will release earnings results during the 15-day period following the last day of the 180-day period, in which case the restrictions described in the preceding paragraph will continue to apply until the expiration of the 18-day period beginning on the issuance of the earnings release of the announcement of the material news or material event.
 
Rule 144
 
In general, under Rule 144, as currently in effect, a person who owns shares that were acquired from us or an affiliate of us at least one year prior to the proposed sale is entitled to sell upon expiration of the lock-up agreements described above, within any three-month period beginning 90 days after the date of this prospectus, a number of shares that does not exceed the greater of:
 
  •  1% of the number of shares of common stock then outstanding, which will equal approximately           shares immediately after this offering; or
 
  •  the average weekly trading volume of the common stock during the four calendar weeks preceding the filing of a notice on Form 144 with respect to such sale.
 
Sales under Rule 144 are also subject to certain manner of sale provisions and notice requirements and to the availability of current public information about us. Rule 144 also provides that our affiliates who sell shares of our common stock that are not restricted shares must nonetheless comply with the same restrictions applicable to restricted shares with the exception of the holding period requirement.


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Rule 144(k)
 
Under Rule 144(k), a person who is not deemed to have been one of our affiliates for purposes of the Securities Act at any time during the 90 days preceding a sale and who has beneficially owned the shares proposed to be sold for at least two years, including the holding period of any prior owner other than our affiliates, is entitled to sell such shares without complying with the manner of sale, public information, volume limitation or notice provisions of Rule 144. Therefore, unless otherwise restricted, “144(k) shares” may be sold immediately upon the completion of this offering.
 
Rule 701
 
In general, under Rule 701 as currently in effect, any of our employees, directors, consultants or advisors who purchases or purchased shares from us in connection with a compensatory stock or option plan or other written agreement in a transaction that was completed in reliance on Rule 701 and which complied with the requirements of Rule 701 is eligible to resell such shares 90 days after the effective date of this offering in reliance on Rule 144, but without compliance with certain restrictions, including the holding period, contained in Rule 144.
 
Stock Options
 
We intend to file a registration statement on Form S-8 under the Securities Act covering 11,608,822 shares of our common stock subject to options outstanding or reserved for issuance under our stock plans and shares of our common stock issued upon the exercise of options by employees. We expect to file this registration statement as soon as practicable after this offering. In addition, we intend to file a registration statement on Form S-8 or such other form as may be required under the Securities Act for the resale of shares of our common stock issued upon the exercise of options that were not granted under Rule 701. We expect to file this registration statement as soon as permitted under the Securities Act. However, the shares registered on Form S-8 will be subject to volume limitations, manner of sale, notice and public information requirements of Rule 144 and will not be eligible for resale until expiration of the lock-up agreements to which they are subject.
 
Registration Rights
 
We have granted demand registration rights, rights to participate in offerings that we initiate and Form S-3 registration rights to our preferred stockholders. For a further description of these rights, see “Description of Capital Stock — Registration Rights.”


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UNDERWRITING
 
We, the selling stockholders and the underwriters named below have entered into an underwriting agreement with respect to the shares being offered. Subject to certain conditions, each underwriter has severally agreed to purchase the number of shares indicated in the following table. Goldman, Sachs & Co., Morgan Stanley & Co. Incorporated, Jefferies & Company, Inc., Piper Jaffray & Co. and Friedman, Billings, Ramsey & Co., Inc. are the representatives of the underwriters.
 
         
Underwriters
 
Number of Shares
 
 
Goldman, Sachs & Co.
       
Morgan Stanley & Co. Incorporated
       
Jefferies & Company, Inc.
       
Piper Jaffray & Co.
       
Friedman, Billings, Ramsey & Co., Inc. 
       
         
         
Total
                
         
 
The underwriters are committed to take and pay for all of the shares being offered, if any are taken, other than the shares covered by the option described below unless and until this option is exercised.
 
If the underwriters sell more shares than the total number set forth in the table above, the underwriters have an option to buy up to an additional          shares from us or the selling stockholders to cover such sales. They may exercise that option for 30 days. If any shares are purchased pursuant to this option, the underwriters will severally purchase shares in approximately the same proportion as set forth in the table above.
 
The following tables show the per share and total underwriting discounts and commissions to be paid to the underwriters by us and the selling stockholders. Such amounts are shown assuming both no exercise and full exercise of the underwriters’ option to purchase           additional shares.
 
Paid by the Company
 
                 
   
No Exercise
   
Full Exercise
 
 
Per Share
  $                $             
Total
  $       $  
 
Paid by the Selling Stockholders
 
                 
   
No Exercise
   
Full Exercise
 
 
Per Share
  $                $             
Total
  $       $  
 
Shares sold by the underwriters to the public will initially be offered at the initial public offering price set forth on the cover of this prospectus. Any shares sold by the underwriters to securities dealers may be sold at a discount of up to $      per share from the initial public offering price. Any such securities dealers may resell any shares purchased from the underwriters to certain other brokers or dealers at a discount of up to $      per share from the initial public offering price. If all the shares are not sold at the initial public offering price, the representatives may change the offering price and the other selling terms.
 
We and our officers, directors, and holders of substantially all of our common stock, including the selling stockholders, have agreed with the underwriters, subject to certain exceptions, not to dispose of or hedge any of our common stock or securities convertible into or exchangeable for shares of common stock during the period from the date of this prospectus continuing through the date 180 days after the date of this prospectus, except with the prior written consent of Goldman, Sachs & Co. This


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agreement does not apply to any existing employee benefit plans. See “Shares Available for Future Sale” for a discussion of certain transfer restrictions.
 
The 180-day restricted period described in the preceding paragraph will be automatically extended if: (1) during the last 17 days of the 180-day restricted period we issue an earnings release or announce material news or a material event; or (2) prior to the expiration of the 180-day restricted period, we announce that we will release earnings results during the 15-day period following the last day of the 180-day period, in which case the restrictions described in the preceding paragraph will continue to apply until the expiration of the 18-day period beginning on the issuance of the earnings release of the announcement of the material news or material event.
 
Prior to the offering, there has been no public market for the shares. The initial public offering price will be negotiated among us and the representatives. Among the factors to be considered in determining the initial public offering price of the shares, in addition to prevailing market conditions, will be our historical performance, estimates of our business potential and earnings prospects, an assessment of our management and the consideration of the above factors in relation to market valuation of companies in related businesses.
 
We have applied to have our common stock approved for listing on the Nasdaq Global Market under the symbol “LLNW.”
 
In connection with the offering, the underwriters may purchase and sell shares of common stock in the open market. These transactions may include short sales, stabilizing transactions and purchases to cover positions created by short sales. Short sales involve the sale by the underwriters of a greater number of shares than they are required to purchase in the offering. “Covered” short sales are sales made in an amount not greater than the underwriters’ option to purchase additional shares from us or the selling stockholders. The underwriters may close out any covered short position by either exercising their option to purchase additional shares or purchasing shares in the open market. In determining the source of shares to close out the covered short position, the underwriters will consider, among other things, the price of shares available for purchase in the open market as compared to the price at which they may purchase additional shares pursuant to the option granted to them. “Naked” short sales are any sales in excess of such option. The underwriters must close out any naked short position by purchasing shares in the open market. A naked short position is more likely to be created if the underwriters are concerned that there may be downward pressure on the price of the common stock in the open market after pricing that could adversely affect investors who purchase in the offering. Stabilizing transactions consist of various bids for or purchases of common stock made by the underwriters in the open market prior to the completion of the offering.
 
The underwriters may also impose a penalty bid. This occurs when a particular underwriter repays to the underwriters a portion of the underwriting discount received by it because the representatives have repurchased shares sold by or for the account of such underwriter in stabilizing or short covering transactions.
 
Purchases to cover a short position and stabilizing transactions, as well as other purchases by the underwriters for their own accounts, may have the effect of preventing or retarding a decline in the market price of our common stock, and together with the imposition of the penalty bid, may stabilize, maintain or otherwise affect the market price of our common stock. As a result, the price of our common stock may be higher than the price that otherwise might exist in the open market. If these activities are commenced, they may be discontinued at any time. These transactions may be effected on the Nasdaq Global Market, in the over-the-counter market or otherwise.
 
Each of the underwriters has represented and agreed that:
 
(a) it has only communicated or caused to be communicated and will only communicate or cause to be communicated an invitation or inducement to engage in investment activity (within the meaning of section 21 of FSMA) to persons who have professional experience in matters relating to investments falling within Article 19(5) of the Financial Services and Markets Act 2000


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(Financial Promotion) Order 2005 or in circumstances in which section 21 of FSMA does not apply to us; and
 
(b) it has complied with, and will comply with all applicable provisions of FSMA with respect to anything done by it in relation to the shares in, from or otherwise involving the United Kingdom.
 
In relation to each Member State of the European Economic Area which has implemented the Prospectus Directive (each, a “Relevant Member State”), each underwriter has represented and agreed that with effect from and including the date on which the Prospectus Directive is implemented in that Relevant Member State (the “Relevant Implementation Date”) it has not made and will not make an offer of shares to the public in that Relevant Member State prior to the publication of a prospectus in relation to the shares which has been approved by the competent authority in that Relevant Member State or, where appropriate, approved in another Relevant Member State and notified to the competent authority in that Relevant Member State, all in accordance with the Prospectus Directive, except that it may, with effect from and including the Relevant Implementation Date, make an offer of Shares to the public in that Relevant Member State at any time:
 
(a) to legal entities which are authorized or regulated to operate in the financial markets or, if not so authorized or regulated, whose corporate purpose is solely to invest in securities;
 
(b) to any legal entity which has two or more of (1) an average of at least 250 employees during the last financial year; (2) a total balance sheet of more than €43,000,000 and (3) an annual net turnover of more than €50,000,000, as shown in its last annual or consolidated accounts;
 
(c) to fewer than 100 natural or legal persons (other than qualified investors as defined in the Prospectus Directive) subject to obtaining the prior consent of the representatives for any such offer; or
 
(d) in any other circumstances which do not require the publication by the issuer of a prospectus pursuant to Article 3 of the Prospectus Directive.
 
For the purposes of this provision, the expression an “offer of shares to the public” in relation to any shares in any Relevant Member State means the communication in any form and by any means of sufficient information on the terms of the offer and the shares to be offered so as to enable an investor to decide to purchase or subscribe the shares, as the same may be varied in that Relevant Member State by any measure implementing the Prospectus Directive in that Relevant Member State and the expression Prospectus Directive means Directive 2003/71/EC and includes any relevant implementing measure in each Relevant Member State.
 
The shares may not be offered or sold by means of any document other than (i) in circumstances which do not constitute an offer to the public within the meaning of the Companies Ordinance (Cap.32, Laws of Hong Kong), or (ii) to “professional investors” within the meaning of the Securities and Futures Ordinance (Cap.571, Laws of Hong Kong) and any rules made thereunder, or (iii) in other circumstances which do not result in the document being a “prospectus” within the meaning of the Companies Ordinance (Cap. 32, Laws of Hong Kong), and no advertisement, invitation or document relating to the shares may be issued or may be in the possession of any person for the purpose of issue (in each case whether in Hong Kong or elsewhere), which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so under the laws of Hong Kong) other than with respect to shares which are or are intended to be disposed of only to persons outside Hong Kong or only to “professional investors” within the meaning of the Securities and Futures Ordinance (Cap. 571, Laws of Hong Kong) and any rules made thereunder.
 
This prospectus has not been registered as a prospectus with the Monetary Authority of Singapore. Accordingly, this prospectus and any other document or material in connection with the


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offer or sale, or invitation for subscription or purchase, of the shares may not be circulated or distributed, nor may the shares be offered or sold, or be made the subject of an invitation for subscription or purchase, whether directly or indirectly, to persons in Singapore other than (i) to an institutional investor under Section 274 of the Securities and Futures Act, Chapter 289 of Singapore (the “SFA”), (ii) to a relevant person, or any person pursuant to Section 275(1A), and in accordance with the conditions, specified in Section 275 of the SFA or (iii) otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the SFA.
 
Where the shares are subscribed or purchased under Section 275 by a relevant person which is: (a) a corporation (which is not an accredited investor) the sole business of which is to hold investments and the entire share capital of which is owned by one or more individuals, each of whom is an accredited investor; or (b) a trust (where the trustee is not an accredited investor) whose sole purpose is to hold investments and each beneficiary is an accredited investor, shares, debentures and units of shares and debentures of that corporation or the beneficiaries’ rights and interest in that trust shall not be transferable for 6 months after that corporation or that trust has acquired the shares under Section 275 except: (1) to an institutional investor under Section 274 of the SFA or to a relevant person, or any person pursuant to Section 275(1A), and in accordance with the conditions, specified in Section 275 of the SFA; (2) where no consideration is given for the transfer; or (3) by operation of law.
 
The securities have not been and will not be registered under the Securities and Exchange Law of Japan (the “Securities and Exchange Law”) and each underwriter has agreed that it will not offer or sell any securities, directly or indirectly, in Japan or to, or for the benefit of, any resident of Japan (which term as used herein means any person resident in Japan, including any corporation or other entity organized under the laws of Japan), or to others for re-offering or resale, directly or indirectly, in Japan or to a resident of Japan, except pursuant to an exemption from the registration requirements of, and otherwise in compliance with, the Securities and Exchange Law and any other applicable laws, regulations and ministerial guidelines of Japan.
 
The underwriters will not execute sales in discretionary accounts without the prior written specific approval of the customer.
 
We and the selling stockholders estimate that the total expenses of the offering, excluding underwriting discounts and commissions, will be approximately $2.4 million.
 
We have agreed to indemnify the several underwriters against certain liabilities, including liabilities under the Securities Act of 1933.
 
In July 2006, we completed the sale of our Series B preferred stock to certain investors, after which sale certain entities affiliated with Goldman, Sachs & Co., the co-lead underwriter for this offering, held approximately 45% of the outstanding shares of our capital stock. Accordingly, this offering will be made in compliance with the applicable provisions of Rule 2720 of the Conduct Rules of the National Association of Securities Dealers, Inc. Rule 2720 requires that the initial public offering price can be no higher than that recommended by a “qualified independent underwriter,” as defined by the NASD. Morgan Stanley & Co. Incorporated has served in that capacity and performed due diligence investigations and reviewed and participated in the preparation of the registration statement of which this Prospectus forms a part. Morgan Stanley & Co. Incorporated is expected to receive compensation from us for such role.
 
Certain of the underwriters and their respective affiliates have, from time to time, performed, and may in the future perform, various financial advisory and investment banking services for us, for which they received or will receive customary fees and expenses.


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LEGAL MATTERS
 
The validity of the shares of common stock offered hereby will be passed upon for us by Wilson Sonsini Goodrich & Rosati, Professional Corporation, Palo Alto, California. Certain legal matters in connection with this offering will be passed upon for the underwriters by Simpson Thacher & Bartlett LLP, Palo Alto, California. Certain members of, and investment partnerships comprised of members of, and persons associated with, Wilson Sonsini Goodrich & Rosati own an aggregate of 15,026 shares of our common stock.
 
EXPERTS
 
Ernst & Young LLP, independent registered public accounting firm, has audited our consolidated financial statements at December 31, 2005 and 2006, and for each of the three years in the period ended December 31, 2006, as set forth in their report. We have included our financial statements in the prospectus and elsewhere in the registration statement in reliance on Ernst & Young LLP’s report, given on their authority as experts in accounting and auditing.
 
WHERE YOU CAN FIND ADDITIONAL INFORMATION
 
We have filed with the SEC a registration statement on Form S-1 under the Securities Act with respect to the shares of common stock we are offering. The registration statement, including the attached exhibits and schedules, contains additional relevant information about us and our common stock. This prospectus does not contain all of the information set forth in the registration statement and the exhibits and schedules thereto. The rules and regulations of the SEC allow us to omit from this prospectus certain information included in the registration statement.
 
For further information about us and our common stock, you may inspect a copy of the registration statement and the exhibits and schedules to the registration statement without charge at the offices of the SEC at 100 F Street, N.E., Washington, D.C. 20549. You may obtain copies of all or any part of the registration statement from the Public Reference Section of the SEC, 100 F Street, N.E., Washington, D.C. 20549 upon the payment of the prescribed fees. You may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains a Web site at www.sec.gov that contains reports, proxy and information statements and other information regarding registrants like us that file electronically with the SEC. You can also inspect our registration statement on this Web site.


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Report of Independent Registered Public Accounting Firm
 
The Board of Directors and Stockholders of
Limelight Networks, Inc.
 
We have audited the accompanying consolidated balance sheets of Limelight Networks, Inc. as of December 31, 2005 and 2006, and the related consolidated statements of operations, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2006. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based upon our audits.
 
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. We were not engaged to perform an audit of the Company’s internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
 
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the consolidated financial position of Limelight Networks, Inc. at December 31, 2005 and 2006, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2006, in conformity with U.S. generally accepted accounting principles.
 
As discussed in Note 2 to the consolidated financial statements, Limelight Networks, Inc. changed its method of accounting for share-based payments in accordance with Statement of Financial Accounting Standards No. 123 (revised 2004) on January 1, 2006.
 
 
/s / Ernst & Young LLP
 
Phoenix, Arizona
March 21, 2007


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Table of Contents

Limelight Networks, Inc.
 
Consolidated Balance Sheets
(In thousands, except share and per share data)
 
                 
    December 31  
   
2005
   
2006
 
 
Assets
Current assets:
               
Cash and cash equivalents
  $ 1,536     $ 7,611  
Accounts receivable, net of reserves of $328 and $1,204 at December 31, 2005 and 2006, respectively
    4,273       16,626  
Income taxes receivable
          3,317  
Deferred income taxes
    157       362  
Prepaid expenses and other current assets
    940       3,011  
                 
Total current assets
    6,906       30,927  
Property and equipment, net
    11,986       41,784  
Investment in marketable securities
    355       285  
Deferred income taxes
          173  
Other assets
    336       759  
                 
Total assets
  $ 19,583     $ 73,928  
                 
 
Liabilities and stockholders’ equity
Current liabilities:
               
Accounts payable
  $ 3,138     $ 6,419  
Accounts payable, related parties
    362       781  
Line of credit
    1,000        
Notes payable to related party, current portion
    195        
Credit facilities, current portion
    1,950       2,938  
Capital lease obligations, current portion
    289       245  
Other current liabilities
    1,799       6,511  
                 
Total current liabilities
    8,733       16,894  
Credit facilities, less current portion (net of discount of $71 and $470 in 2005 and 2006, respectively)
    8,606       20,410  
Capital lease obligations, less current portion
    203       5  
Other long-term liabilities
    30       30  
Deferred income taxes
    188        
                 
Total liabilities
    17,760       37,339  
Commitments and contingencies
               
Stockholders’ equity:
               
Series A convertible preferred stock, $0.001 par value; 4,614,000 shares authorized; 4,614,000 and 3,380,200 shares issued and outstanding at December 31, 2005 and 2006, respectively (liquidation preference: $733 at December 31, 2006)
    4       3  
Series B convertible preferred stock, $0.001 par value; 28,700,000 shares authorized; 26,579,970 shares issued and outstanding at December 31, 2006 (liquidation preference: $260,000 at December 31, 2006)
          27  
Common stock, $0.001 par value; 80,100,000 authorized; 23,409,138 and 14,554,794 shares issued and outstanding at December 31, 2005 and 2006, respectively
    23       14  
Additional paid-in capital
    3,299       41,712  
Deferred share-based compensation
    (91 )      
Accumulated other comprehensive loss
    (71 )     (113 )
Accumulated deficit
    (1,341 )     (5,054 )
                 
Total stockholders’ equity
    1,823       36,589  
                 
Total liabilities and stockholders’ equity
  $ 19,583     $ 73,928  
                 
 
See accompanying notes.


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Table of Contents

Limelight Networks, Inc.
Consolidated Statements of Operations
 
                         
    Years Ended December 31  
   
2004
   
2005
   
2006
 
    (In thousands, except per share data)  
 
Revenue
  $ 11,192     $ 21,303     $ 64,343  
Cost of revenue:
                       
Cost of services
    4,834       9,037       25,662  
Depreciation — network
    775       2,851       10,316  
                         
Total cost of revenue
    5,609       11,888       35,978  
                         
Gross margin
    5,583       9,415       28,365  
Operating expenses:
                       
General and administrative
    2,147       4,107       18,274  
Sales and marketing
    2,078       3,078       6,841  
Research and development
    231       462       3,151  
Depreciation and amortization
    69       100       226  
                         
Total operating expenses
    4,525       7,747       28,492  
                         
Operating income (loss)
    1,058       1,668       (127 )
Other income (expense):
                       
Interest expense
    (189 )     (955 )     (1,782 )
Interest income
    1             208  
Other income (expense)
    (48 )     (16 )     175  
                         
Total other income (expense)
    (236 )     (971 )     (1,399 )
                         
Income (loss) before income taxes
    822       697       (1,526 )
Income tax expense
    306       300       2,187  
                         
Net income (loss)
  $ 516     $ 397     $ (3,713 )
                         
Net income (loss) allocable to common stockholders
  $ 317     $ 185     $ (3,713 )
                         
Net income (loss) per common share — basic
  $ 0.01     $ 0.01     $ (0.22 )
                         
Net income (loss) per common share — diluted
  $ 0.01     $ 0.01     $ (0.22 )
                         
Weighted average common shares — basic
    23,125       23,158       17,061  
                         
Weighted average common shares — diluted
    25,971       27,375       17,061  
                         
 
See accompanying notes.


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Limelight Networks, Inc.
 
Consolidated Statements of Stockholders’ Equity
(Dollars in thousands)
 
                                                                                         
                                                    Accumulated
             
                                        Additional
    Deferred
    Other
             
    Series A Preferred Stock     Series B Preferred Stock     Common Stock     Paid-In
    Share-Based
    Comprehensive
    Accumulated
       
   
Shares
   
Amount
   
Shares
   
Amount
   
Shares
   
Amount
   
Capital
    Compensation    
Loss
   
Deficit
   
Total
 
 
Balance at December 31, 2003
    2,307,000     $ 2           $       23,079,000     $ 23     $ 2,426     $ (23 )   $     $ (2,254 )   $ 174  
Net income
                                                          516       516  
Issuance of Series A preferred stock
    2,307,000       2                               498                         500  
Issuance of common stock
                            46,147             13                         13  
Value of warrants issued
                                        22                         22  
Share-based compensation
                                        7       7                   14  
                                                                                         
Balance at December 31, 2004
    4,614,000       4                   23,125,147       23       2,966