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American Tower Corp./MA – ‘10-K’ for 12/31/23 – ‘EX-31.1’

On:  Tuesday, 2/27/24, at 4:21pm ET   ·   For:  12/31/23   ·   Accession #:  1053507-24-11   ·   File #:  1-14195

Previous ‘10-K’:  ‘10-K’ on 2/23/23 for 12/31/22   ·   Latest ‘10-K’:  This Filing   ·   59 References:   

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

 2/27/24  American Tower Corp./MA           10-K       12/31/23  167:22M

Annual Report   —   Form 10-K   —   SEA’34

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   4.08M 
 2: EX-4.32     Instrument Defining the Rights of Security Holders  HTML    272K 
 3: EX-10.14    Material Contract                                   HTML     64K 
 4: EX-10.15    Material Contract                                   HTML     66K 
 5: EX-10.28    Material Contract                                   HTML     73K 
 6: EX-10.29    Material Contract                                   HTML     56K 
 7: EX-10.30    Material Contract                                   HTML     49K 
 8: EX-10.31    Material Contract                                   HTML     48K 
 9: EX-21       Subsidiaries List                                   HTML    156K 
10: EX-23       Consent of Expert or Counsel                        HTML     43K 
14: EX-97       Clawback Policy re: Recovery of Erroneously         HTML     66K 
                Awarded Compensation                                             
11: EX-31.1     Certification -- §302 - SOA'02                      HTML     49K 
12: EX-31.2     Certification -- §302 - SOA'02                      HTML     49K 
13: EX-32       Certification -- §906 - SOA'02                      HTML     47K 
20: R1          Cover                                               HTML    143K 
21: R2          Audit Information                                   HTML     49K 
22: R3          Consolidated Balance Sheets                         HTML    182K 
23: R4          Consolidated Balance Sheets (Parenthetical)         HTML     56K 
24: R5          Consolidated Statements of Operations               HTML    148K 
25: R6          Consolidated Statements of Operations               HTML     47K 
                (Parenthetical)                                                  
26: R7          Consolidated Statements of Comprehensive Income     HTML     82K 
27: R8          Consolidated Statements of Comprehensive Income     HTML     52K 
                (Parenthetical)                                                  
28: R9          Consolidated Statements of Equity                   HTML    145K 
29: R10         Consolidated Statements of Equity (Parenthetical)   HTML     50K 
30: R11         Consolidated Statements of Cash Flows               HTML    157K 
31: R12         Business and Summary of Significant Accounting      HTML    214K 
                Policies                                                         
32: R13         Prepaid and Other Current Assets                    HTML     54K 
33: R14         Property and Equipment                              HTML     84K 
34: R15         Leases                                              HTML    270K 
35: R16         Goodwill and Other Intangible Assets                HTML    120K 
36: R17         Acquisitions                                        HTML     73K 
37: R18         Accrued Expenses                                    HTML     58K 
38: R19         Long-Term Obligations                               HTML    356K 
39: R20         Other Non-Current Liabilities                       HTML     51K 
40: R21         Asset Retirement Obligations                        HTML     55K 
41: R22         Fair Value Measurements                             HTML     95K 
42: R23         Income Taxes                                        HTML    154K 
43: R24         Stock-Based Compensation                            HTML    108K 
44: R25         Equity                                              HTML     81K 
45: R26         Noncontrolling Interests                            HTML     65K 
46: R27         Other Operating Expense                             HTML     90K 
47: R28         Earnings Per Common Share                           HTML     64K 
48: R29         Commitments and Contingencies                       HTML     54K 
49: R30         Supplemental Cash Flow Information                  HTML     60K 
50: R31         Business Segments                                   HTML    308K 
51: R32         Related Party Transactions                          HTML     49K 
52: R33         Subsequent Events                                   HTML     48K 
53: R34         Schedule III - SCHEDULE OF REAL ESTATE AND          HTML    102K 
                ACCUMULATED DEPRECIATION                                         
54: R35         Insider Trading Arrangements                        HTML     66K 
55: R36         Business and Summary of Significant Accounting      HTML    160K 
                Policies (Policies)                                              
56: R37         Business and Summary of Significant Accounting      HTML    161K 
                Policies (Tables)                                                
57: R38         Prepaid and Other Current Assets (Tables)           HTML     55K 
58: R39         Property and Equipment (Tables)                     HTML     84K 
59: R40         Leases (Tables)                                     HTML    130K 
60: R41         Goodwill and Other Intangible Assets (Tables)       HTML    123K 
61: R42         Acquisitions (Tables)                               HTML     64K 
62: R43         Accrued Expenses (Tables)                           HTML     58K 
63: R44         Long-Term Obligations (Tables)                      HTML    319K 
64: R45         Other Non-Current Liabilities (Tables)              HTML     51K 
65: R46         Asset Retirement Obligations (Tables)               HTML     54K 
66: R47         Fair Value Measurements (Tables)                    HTML     87K 
67: R48         Income Taxes (Tables)                               HTML    155K 
68: R49         Stock-Based Compensation (Tables)                   HTML    105K 
69: R50         Equity (Tables)                                     HTML     78K 
70: R51         Noncontrolling Interests (Tables)                   HTML     58K 
71: R52         Other Operating Expense (Tables)                    HTML     91K 
72: R53         Earnings Per Common Share (Tables)                  HTML     66K 
73: R54         Supplemental Cash Flow Information (Tables)         HTML     59K 
74: R55         Business Segments (Tables)                          HTML    306K 
75: R56         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     88K 
                POLICIES - Principles of Consolidation and Sale of               
                Mexico Fiber and Poland Subsidiary (Details)                     
76: R57         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     46K 
                POLICIES - Segments (Details)                                    
77: R58         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     53K 
                POLICIES - Accounts Receivable and Deferred Rent                 
                Asset (Details)                                                  
78: R59         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     51K 
                POLICIES - Changes in Allowances (Details)                       
79: R60         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     51K 
                POLICIES - Net Foreign Currency Losses (Details)                 
80: R61         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     57K 
                POLICIES - Adoption of Highly Inflationary                       
                Accounting in Ghana (Details)                                    
81: R62         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     53K 
                POLICIES - Cash, Cash Equivalents, And Restricted                
                Cash (Details)                                                   
82: R63         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     65K 
                POLICIES - Property and Equipment (Details)                      
83: R64         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     56K 
                POLICIES - Goodwill and Other Intangible Assets                  
                (Details)                                                        
84: R65         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     61K 
                POLICIES - Asset Retirement Obligations (Details)                
85: R66         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     52K 
                POLICIES - Other Comprehensive Income (Loss))                    
                (Details)                                                        
86: R67         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     52K 
                POLICIES - Revenue Narrative (Details)                           
87: R68         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     98K 
                POLICIES - Disaggregation of Revenue (Details)                   
88: R69         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     59K 
                POLICIES - Schedule of Non-Lease Receivables                     
                Contract Assets and Liabilities From Contracts                   
                with Tenants (Details)                                           
89: R70         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     46K 
                POLICIES - Rent Expense (Details)                                
90: R71         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     71K 
                POLICIES - Stock-Based Compensation (Details)                    
91: R72         BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING      HTML     50K 
                POLICIES - Retirement Plan (Details)                             
92: R73         Prepaid and Other Current Assets (Details)          HTML     57K 
93: R74         PROPERTY AND EQUIPMENT- Summary of Property and     HTML     73K 
                Equipment (Details)                                              
94: R75         PROPERTY AND EQUIPMENT - Narrative (Details)        HTML     49K 
95: R76         PROPERTY AND EQUIPMENT - Schedule of Finance Lease  HTML     63K 
                Assets Included in Property Plant and Equipment                  
                (Details)                                                        
96: R77         LEASES - Narrative (Details)                        HTML     80K 
97: R78         LEASES - Future Minimum Rental Receipts Expected    HTML     58K 
                Under Operating Leases (Details)                                 
98: R79         LEASES - Information About Other Lease-related      HTML     62K 
                Balances (Details)                                               
99: R80         LEASES - Schedule of Weighted Average Lease Terms   HTML     55K 
                And Discount Rates (Details)                                     
100: R81         LEASES - Lease Costs (Details)                      HTML     48K  
101: R82         LEASES - Supplemental Cash Flow Information         HTML     59K  
                (Details)                                                        
102: R83         LEASES -Maturities Of Operating And Finance Leases  HTML     92K  
                (Details)                                                        
103: R84         GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in   HTML     92K  
                the Carrying Value of Goodwill (Details)                         
104: R85         GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative    HTML     59K  
                (Details)                                                        
105: R86         GOODWILL AND OTHER INTANGIBLE ASSETS - Other        HTML     70K  
                Intangible Assets Subject to Amortization                        
                (Details)                                                        
106: R87         GOODWILL AND OTHER INTANGIBLE ASSETS - Expected     HTML     55K  
                Future Amortization Expenses (Details)                           
107: R88         ACQUISITIONS - Schedule of Merger and Acquisition   HTML     48K  
                Related Costs (Details)                                          
108: R89         ACQUISITIONS - Narrative (Details)                  HTML     90K  
109: R90         ACQUISITIONS - Schedule of Allocation of Purchase   HTML     65K  
                Price for Asset Acquisitions (Details)                           
110: R91         Accrued Expenses (Details)                          HTML     64K  
111: R92         LONG-TERM OBLIGATIONS - Schedule of Long-Term Debt  HTML    332K  
                Obligations (Details)                                            
112: R93         LONG-TERM OBLIGATIONS - Current Portion of          HTML    122K  
                Long-Term Obligations and Bank Facilities                        
                (Details)                                                        
113: R94         LONG-TERM OBLIGATIONS - Schedule of Credit          HTML     85K  
                Facilities and Term Loans (Details)                              
114: R95         LONG-TERM OBLIGATIONS - Senior Notes (Details)      HTML    132K  
115: R96         LONG-TERM OBLIGATIONS - Key Terms Related to        HTML    282K  
                Outstanding Senior Notes (Details)                               
116: R97         LONG-TERM OBLIGATIONS - Subsidiary Debt Narrative   HTML    167K  
                (Details)                                                        
117: R98         LONG-TERM OBLIGATIONS - Schedule of India           HTML     72K  
                Indebtedness (Details)                                           
118: R99         LONG-TERM OBLIGATIONS - Schedule of Other           HTML     72K  
                Subsidiary Debt (Details)                                        
119: R100        LONG-TERM OBLIGATIONS - Finance Lease Obligations   HTML     46K  
                Narrative (Details)                                              
120: R101        LONG-TERM OBLIGATIONS - Maturities of Long Term     HTML     61K  
                Debt (Details)                                                   
121: R102        Other Non-Current Liabilities (Details)             HTML     50K  
122: R103        ASSET RETIREMENT OBLIGATIONS - Schedule of          HTML     58K  
                Carrying Value Of Asset Retirement Obligations                   
                (Details)                                                        
123: R104        ASSET RETIREMENT OBLIGATIONS - Narrative (Details)  HTML     45K  
124: R105        FAIR VALUE MEASUREMENTS - Assets And Liabilities    HTML     75K  
                Measured at Fair Value on a Recurring Basis                      
                (Details)                                                        
125: R106        FAIR VALUE MEASUREMENTS - Narrative (Details)       HTML    130K  
126: R107        FAIR VALUE MEASUREMENTS - Fair Value of the         HTML     57K  
                Individual Tower and Acquired Network Location                   
                Intangible Assets Subject to Impairment (Details)                
127: R108        FAIR VALUE MEASUREMENTS - Percentages of the Asset  HTML     52K  
                Class that were Subject to Fair Value Measurement                
                and Subsequently Impaired (Details)                              
128: R109        FAIR VALUE MEASUREMENTS - Fair Value of Goodwill    HTML     52K  
                (Details)                                                        
129: R110        INCOME TAXES - Income Tax Provision From            HTML     66K  
                Continuing Operations (Details)                                  
130: R111        INCOME TAXES - Narrative (Details)                  HTML     72K  
131: R112        INCOME TAXES - Reconciliation Between The U.S.      HTML     62K  
                Statutory Rate And The Effective Rate From                       
                Continuing Operations (Details)                                  
132: R113        INCOME TAXES - Domestic and Foreign Components Of   HTML     54K  
                Income From Continuing Operations Before Income                  
                Taxes (Details)                                                  
133: R114        INCOME TAXES - Components of the Net Deferred Tax   HTML     85K  
                Asset and Related Valuation Allowance (Details)                  
134: R115        INCOME TAXES - Valuation Allowance Activity         HTML     52K  
                (Details)                                                        
135: R116        INCOME TAXES - Net Operating Loss Carryforwards     HTML     63K  
                Expire (Details)                                                 
136: R117        INCOME TAXES - Reconciliation of Unrecognized Tax   HTML     65K  
                Benefits (Details)                                               
137: R118        STOCK-BASED COMPENSATION - Narrative (Details)      HTML    130K  
138: R119        STOCK-BASED COMPENSATION - Summary of Stock-based   HTML     56K  
                Compensation Expenses (Details)                                  
139: R120        STOCK-BASED COMPENSATION - Summary of the           HTML     99K  
                Company's Option Activity (Details)                              
140: R121        STOCK-BASED COMPENSATION - Schedule of Options      HTML     77K  
                Outstanding (Details)                                            
141: R122        STOCK-BASED COMPENSATION - Summary of RSUs and      HTML    116K  
                PSUs (Details)                                                   
142: R123        EQUITY - Narrative (Details)                        HTML     73K  
143: R124        EQUITY - Distributions Declared (Details)           HTML     71K  
144: R125        NONCONTROLLING INTERESTS - Narrative (Details)      HTML    132K  
145: R126        NONCONTROLLING INTERESTS - Schedule of Changes in   HTML     83K  
                Noncontrolling Interest (Details)                                
146: R127        OTHER OPERATING EXPENSE - Schedule of Other         HTML     54K  
                Operating Expenses (Details)                                     
147: R128        OTHER OPERATING EXPENSE - Impairment Charges        HTML     61K  
                (Details)                                                        
148: R129        OTHER OPERATING EXPENSE - India Impairments         HTML     60K  
                (Details)                                                        
149: R130        OTHER OPERATING EXPENSE - Severance and Related     HTML     59K  
                Costs by Operating Segments (Details)                            
150: R131        OTHER OPERATING EXPENSE - Unpaid Obligations for    HTML     53K  
                Severance and Related Costs (Details)                            
151: R132        EARNINGS PER COMMON SHARE - Schedule Of Earnings    HTML     69K  
                Per Basic And Diluted By Common Class (Details)                  
152: R133        EARNINGS PER COMMON SHARE - Schedule Of Shares      HTML     48K  
                Excluded From Computation Of Earnings Per Share                  
                (Details)                                                        
153: R134        Commitments and Contingencies (Details)             HTML     70K  
154: R135        Supplemental Cash Flow Information (Details)        HTML     63K  
155: R136        BUSINESS SEGMENTS - Narrative (Details)             HTML     50K  
156: R137        BUSINESS SEGMENTS - Summarized Segment Financial    HTML    162K  
                Information (Details)                                            
157: R138        BUSINESS SEGMENTS - Additional Information          HTML     71K  
                Relating to the Company's Operating Segments                     
                (Details)                                                        
158: R139        BUSINESS SEGMENTS - Summary of Geographic           HTML    131K  
                Information (Details)                                            
159: R140        BUSINESS SEGMENTS - Major Customers (Details)       HTML     55K  
160: R141        Subsequent Events (Details)                         HTML     86K  
161: R142        Schedule III - SCHEDULE OF REAL ESTATE AND          HTML     73K  
                ACCUMULATED DEPRECIATION - Schedule of Real Estate               
                and Accumulated Depreciation (Details)                           
162: R143        Schedule III - SCHEDULE OF REAL ESTATE AND          HTML     98K  
                ACCUMULATED DEPRECIATION - Activity of Real Estate               
                and Accumulated Depreciation (Details)                           
164: XML         IDEA XML File -- Filing Summary                      XML    308K  
167: XML         XBRL Instance -- amt-20231231_htm                    XML   5.87M  
163: EXCEL       IDEA Workbook of Financial Report Info              XLSX    396K  
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165: JSON        XBRL Instance as JSON Data -- MetaLinks              946±  1.46M  
166: ZIP         XBRL Zipped Folder -- 0001053507-24-000011-xbrl      Zip   1.07M  


‘EX-31.1’   —   Certification — §302 – SOA’02


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  Document  

Exhibit 31.1
CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE
SARBANES-OXLEY ACT OF 2002

I, Steven O. Vondran, certify that:
1.I have reviewed this Annual Report on Form 10-K of American Tower Corporation;
2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
Date: February 27, 2024  By:
/S/    STEVEN O. VONDRAN       
  Steven O. Vondran
  President and Chief Executive Officer



Dates Referenced Herein   and   Documents Incorporated by Reference

This ‘10-K’ Filing    Date    Other Filings
Filed on:2/27/248-K
For Period end:12/31/23
 List all Filings 


3 Subsequent Filings that Reference this Filing

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

 4/30/24  American Tower Corp./MA           10-Q        3/31/24   95:10M
 3/05/24  American Tower Corp./MA           424B2                  2:812K                                   Donnelley … Solutions/FA
 3/04/24  American Tower Corp./MA           424B5                  1:791K                                   Donnelley … Solutions/FA


56 Previous Filings that this Filing References

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

12/14/23  American Tower Corp./MA           8-K:5,8,9  12/13/23   13:526K
10/26/23  American Tower Corp./MA           10-Q        9/30/23  103:13M
 9/15/23  American Tower Corp./MA           8-K:1,2,9   9/15/23   13:585K                                   Donnelley … Solutions/FA
 7/27/23  American Tower Corp./MA           10-Q        6/30/23  102:16M
 5/25/23  American Tower Corp./MA           8-K:1,2,9   5/25/23   13:631K                                   Donnelley … Solutions/FA
 5/16/23  American Tower Corp./MA           8-K:1,2,9   5/16/23   13:675K                                   Donnelley … Solutions/FA
 4/26/23  American Tower Corp./MA           10-Q        3/31/23   99:11M
 3/03/23  American Tower Corp./MA           8-K:1,2,9   3/03/23   13:571K                                   Donnelley … Solutions/FA
 2/23/23  American Tower Corp./MA           10-K       12/31/22  155:23M
 6/01/22  American Tower Corp./MA           S-3ASR      6/01/22    9:1.7M                                   Donnelley … Solutions/FA
 4/01/22  American Tower Corp./MA           8-K:1,2,9   4/01/22   13:566K                                   Donnelley … Solutions/FA
 3/01/22  American Tower Corp./MA           8-K:5       2/24/22   11:308K
 2/25/22  American Tower Corp./MA           10-K       12/31/21  164:29M
10/28/21  American Tower Corp./MA           10-Q        9/30/21  108:14M
10/05/21  American Tower Corp./MA           8-K:1,2,9  10/05/21   13:594K                                   Donnelley … Solutions/FA
 9/27/21  American Tower Corp./MA           8-K:1,2,9   9/27/21   13:568K                                   Donnelley … Solutions/FA
 7/29/21  American Tower Corp./MA           10-Q        6/30/21  105:13M
 5/21/21  American Tower Corp./MA           8-K:1,2,9   5/21/21   13:611K                                   Donnelley … Solutions/FA
 3/29/21  American Tower Corp./MA           8-K:1,2,9   3/29/21   13:545K                                   Donnelley … Solutions/FA
 2/25/21  American Tower Corp./MA           10-K       12/31/20  166:30M
11/20/20  American Tower Corp./MA           8-K:1,2,9  11/20/20   13:596K                                   Donnelley … Solutions/FA
 9/28/20  American Tower Corp./MA           8-K:1,2,9   9/28/20   13:469K                                   Donnelley … Solutions/FA
 9/10/20  American Tower Corp./MA           8-K:1,2,8,9 9/10/20   14:549K                                   Donnelley … Solutions/FA
 6/03/20  American Tower Corp./MA           8-K:1,2,9   6/03/20   13:569K                                   Donnelley … Solutions/FA
 4/16/20  American Tower Corp./MA           8-K/A:5,9   3/12/20   12:259K                                   Donnelley … Solutions/FA
 1/10/20  American Tower Corp./MA           8-K:1,2,9   1/10/20   13:515K                                   Donnelley … Solutions/FA
10/03/19  American Tower Corp./MA           8-K:1,2,9  10/03/19   13:483K                                   Donnelley … Solutions/FA
 6/13/19  American Tower Corp./MA           8-K:1,2,9   6/13/19    3:296K                                   Donnelley … Solutions/FA
 6/04/19  American Tower Corp./MA           S-3ASR      6/04/19   10:1.5M                                   Donnelley … Solutions/FA
 3/15/19  American Tower Corp./MA           8-K:1,2,9   3/15/19    3:299K                                   Donnelley … Solutions/FA
 2/27/19  American Tower Corp./MA           10-K       12/31/18  155:24M
 5/22/18  American Tower Corp./MA           8-K:1,2,9   5/22/18    3:271K                                   Donnelley … Solutions/FA
 5/02/18  American Tower Corp./MA           10-Q        3/31/18   96:11M
12/08/17  American Tower Corp./MA           8-K:1,2,9  12/08/17    3:284K                                   Donnelley … Solutions/FA
 6/30/17  American Tower Corp./MA           8-K:1,2,8,9 6/30/17    4:269K                                   Donnelley … Solutions/FA
 4/06/17  American Tower Corp./MA           8-K:1,2,9   4/06/17    3:268K                                   Donnelley … Solutions/FA
 3/14/17  American Tower Corp./MA           8-K:5,8,9   3/08/17    5:171K
 9/30/16  American Tower Corp./MA           8-K:1,2,9   9/30/16    3:374K                                   Donnelley … Solutions/FA
 5/13/16  American Tower Corp./MA           8-K:1,2,9   5/13/16    3:340K
 1/12/16  American Tower Corp./MA           8-K:1,2,9   1/12/16    3:287K                                   Donnelley … Solutions/FA
 7/29/15  American Tower Corp./MA           10-Q        6/30/15   93:12M                                    Donnelley … Solutions/FA
 5/07/15  American Tower Corp./MA           8-K:1,2,9   5/07/15    3:301K                                   Donnelley … Solutions/FA
 4/30/15  American Tower Corp./MA           10-Q        3/31/15   89:13M                                    Donnelley … Solutions/FA
 3/03/15  American Tower Corp./MA           8-K:1,3,5,9 2/25/15    5:790K                                   Donnelley … Solutions/FA
 2/24/15  American Tower Corp./MA           10-K       12/31/14  151:31M                                    Donnelley … Solutions/FA
 5/12/14  American Tower Corp./MA           8-K:1,3,5,9 5/06/14    3:405K                                   Donnelley … Solutions/FA
 8/19/13  American Tower Corp./MA           8-K:1,2,9   8/19/13    3:362K                                   Donnelley … Solutions/FA
 5/23/13  American Tower Corp./MA           S-3ASR      5/23/13    9:1.6M                                   Donnelley … Solutions/FA
 5/01/13  American Tower Corp./MA           10-Q        3/31/13   82:10M                                    Donnelley … Solutions/FA
 1/03/12  American Tower Corp./MA           8-K:1,2,3,512/30/11   14:976K                                   Donnelley … Solutions/FA
 8/25/11  American Tower Corp./MA           8-K:1,9     8/24/11    3:77K                                    Donnelley … Solutions/FA
 5/08/09  American Tower Corp./MA           10-Q        3/31/09    5:681K                                   Donnelley … Solutions/FA
 3/05/09  American Tower Corp./MA           8-K:5,9     3/02/09    6:172K                                   Donnelley … Solutions/FA
 3/22/07  American Tower Corp./MA           DEF 14A     5/09/07    1:697K                                   Donnelley … Solutions/FA
 5/11/01  Spectrasite Inc.                  10-Q        3/31/01    7:559K                                   Bowne - DC/FA
 4/02/01  American Tower Corp./MA           10-K       12/31/00   11:1.5M                                   Donnelley Fin’l S… 07/FA
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