Item 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a) The following documents are filed as a part of this report:

1. Financial Statements. See Index to Consolidated Financial Statements, which appears on page F-1 hereof. The financial statements listed in the accompanying Index to Consolidated Financial Statements are filed herewith in response to this Item.

2. Financial Statement Schedules. American Tower Corporation and Subsidiaries Schedule III – Schedule of Real Estate and Accumulated Depreciation is filed herewith in response to this Item.

3. Exhibits.

Pursuant to the rules and regulations of the SEC, the Company has filed certain agreements as exhibits to this Annual Report on Form 10-K. These agreements may contain representations and warranties by the parties. These representations and warranties have been made solely for the benefit of the other party or parties to such agreements and (i) may have been qualified by disclosures made to such other party or parties, (ii) were made only as of the date of such agreements or such other date(s) as may be specified in such agreements and are subject to more recent developments, which may not be fully reflected in the Company’s public disclosure, (iii) may reflect the allocation of risk among the parties to such agreements and (iv) may apply materiality standards different from what may be viewed as material to investors. Accordingly, these representations and warranties may not describe the Company’s actual state of affairs at the date hereof and should not be relied upon.

The exhibits below are included, either by being filed herewith or by incorporation by reference, as part of this Annual Report on Form 10-K. Exhibits are identified according to the number assigned to them in Item 601 of SEC Regulation S-K. Documents that are incorporated by reference are identified by their Exhibit number as set forth in the filing from which they are incorporated by reference.

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
2.1						Agreement and Plan of Merger by and between American Tower Corporation and American Tower REIT, Inc., dated as of August 24, 2011						8-K						001-14195						August 25, 2011						2.1
3.1						Restated Certificate of Incorporation of the Company as filed with the Secretary of State of the State of Delaware, effective as of December 31, 2011						8-K						001-14195						January 3, 2012						3.1
3.2						Certificate of Merger, effective as of December 31, 2011						8-K						001-14195						January 3, 2012						3.2
3.3						Amended and Restated By-Laws of the Company, effective as of January 3, 2025						8-K						001-14195						January 7, 2025						3.1
3.4						Certificate of Designations of the 5.25% Mandatory Convertible Preferred Stock, Series A, of the Company as filed with the Secretary of State of the State of Delaware, effective as of May 12, 2014						8-K						001-14195						May 12, 2014						3.1
3.5						Certificate of Designations of the 5.50% Mandatory Convertible Preferred Stock, Series B, of the Company as filed with the Secretary of State of the State of Delaware, effective as of March 3, 2015						8-K						001-14195						March 3, 2015						3.1
4.1						Indenture dated as of May 23, 2013, by and between the Company and U.S. Bank National Association, as Trustee						S-3ASR						333-188812						May 23, 2013						4.12
4.2						Supplemental Indenture No. 4, dated as of January 12, 2016, to Indenture dated as of May 23, 2013, by and between the Company and U.S. Bank National Association, as Trustee, for the 4.400% Senior Notes due 2026						8-K						001-14195						January 12, 2016						4.1

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
4.3						Supplemental Indenture No. 5, dated as of May 13, 2016, to Indenture dated as of May 23, 2013, by and between the Company and U.S. Bank National Association, as Trustee, for the 3.375% Senior Notes due 2026						8-K						001-14195						May 13, 2016						4.1
4.4						Supplemental Indenture No. 6, dated as of September 30, 2016, to Indenture dated as of May 23, 2013, by and between the Company and U.S. Bank National Association, as Trustee, for the 3.125% Senior Notes due 2027						8-K						001-14195						September 30, 2016						4.1
4.5						Supplemental Indenture No. 8, dated as of June 30, 2017, to Indenture dated as of May 23, 2013, by and between the Company and U.S. Bank National Association, as Trustee, for the 3.55% Senior Notes due 2027						8-K						001-14195						June 30, 2017						4.1
4.6						Supplemental Indenture No. 9, dated as of December 8, 2017, to Indenture dated as of May 23, 2013, by and between the Company and U.S. Bank National Association, as Trustee, for the 3.600% Senior Notes due 2028						8-K						001-14195						December 8, 2017						4.1
4.7						Supplemental Indenture No. 10, dated as of May 22, 2018, to Indenture dated as of May 23, 2013, by and among the Company and U.S. Bank National Association, as Trustee, and Elavon Financial Services DAC, UK Branch, as Paying Agent, for the 1.950% Senior Notes due 2026						8-K						001-14195						May 22, 2018						4.1
4.8						Supplemental Indenture No. 11, dated as of March 15, 2019, to Indenture dated as of May 23, 2013, by and between the Company and U.S. Bank National Association, as Trustee, for the 3.950% Senior Notes due 2029						8-K						001-14195						March 15, 2019						4.1
4.9						Indenture dated as of June 4, 2019, by and between the Company and U.S. Bank National Association, as Trustee						S-3ASR						333-231931						June 4, 2019						4.22
4.10						Supplemental Indenture No. 1, dated as of June 13, 2019, to Indenture dated as of June 4, 2019, by and between American Tower Corporation and U.S. Bank National Association, as Trustee, for the 3.800% Senior Notes due 2029						8-K						001-14195						June 13, 2019						4.1
4.11						Supplemental Indenture No. 2, dated as of October 3, 2019, to Indenture dated as of June 4, 2019, by and between American Tower Corporation and U.S. Bank National Association, as Trustee, for the 2.750% Senior Notes due 2027 and the 3.700% Senior Notes due 2049						8-K						001-14195						October 3, 2019						4.1
4.12						Supplemental Indenture No. 3, dated as of January 10, 2020, to Indenture dated as of June 4, 2019, by and between American Tower Corporation and U.S. Bank National Association, as Trustee, for the 2.900% Senior Notes due 2030						8-K						001-14195						January 10, 2020						4.1

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
4.13						Supplemental Indenture No. 4, dated as of June 3, 2020, to Indenture dated as of June 4, 2019, by and between American Tower Corporation and U.S. Bank National Association, as Trustee, for the 2.100% Senior Notes due 2030 and the 3.100% Senior Notes due 2050						8-K						001-14195						June 3, 2020						4.1
4.14						Supplemental Indenture No. 5, dated as of September 10, 2020, to Indenture dated as of June 4, 2019, by and among the Company, U.S. Bank National Association, as Trustee, and Elavon Financial Services DAC, UK Branch, as Paying Agent, for the 0.500% Senior Notes due 2028 and the 1.000% Senior Notes due 2032						8-K						001-14195						September 10, 2020						4.1
4.15						Supplemental Indenture No. 6, dated as of September 28, 2020, to Indenture dated as of June 4, 2019, by and between American Tower Corporation and U.S. Bank National Association, as Trustee, for the 1.875% Senior Notes due 2030						8-K						001-14195						September 28, 2020						4.1
4.16						Supplemental Indenture No. 7, dated as of November 20, 2020, to Indenture dated as of June 4, 2019, by and between American Tower Corporation and U.S. Bank National Association, as Trustee, for the 1.500% Senior Notes due 2028 and the 2.950% Senior Notes due 2051						8-K						001-14195						November 20, 2020						4.1
4.17						Supplemental Indenture No. 8, dated as of March 29, 2021, to Indenture dated as of June 4, 2019, by and between American Tower Corporation and U.S. Bank National Association, as Trustee, for the 1.600% Senior Notes due 2026 and the 2.700% Senior Notes due 2031						8-K						001-14195						March 29, 2021						4.1
4.18						Supplemental Indenture No. 9, dated as of May 21, 2021, to Indenture dated as of June 4, 2019, by and among the Company, U.S. Bank National Association, as Trustee, and Elavon Financial Services DAC, UK Branch, as Paying Agent, for the 0.450% Senior Notes due 2027, the 0.875% Senior Notes due 2029 and the 1.250% Senior Notes due 2033						8-K						001-14195						May 21, 2021						4.1
4.19						Supplemental Indenture No. 10, dated as of September 27, 2021, to Indenture dated as of June 4, 2019, by and between American Tower Corporation and U.S. Bank National Association, as Trustee, for the 1.450% Senior Notes due 2026 and the 2.300% Senior Notes due 2031						8-K						001-14195						September 27, 2021						4.1
4.20						Supplemental Indenture No. 11, dated as of October 5, 2021, to Indenture dated as of June 4, 2019, by and among the Company, U.S. Bank National Association, as Trustee, and Elavon Financial Services DAC, UK Branch, as Paying Agent, for the 0.400% Senior Notes due 2027 and the 0.950% Senior Notes due 2030						8-K						001-14195						October 5, 2021						4.1
4.21						Supplemental Indenture No. 12, dated as of April 1, 2022, to Indenture dated as of June 4, 2019, by and between American Tower Corporation and U.S. Bank Trust Company, National Association, as Trustee, for the 3.650% Senior Notes due 2027 and the 4.050% Senior Notes due 2032						8-K						001-14195						April 1, 2022						4.1
4.22						Indenture dated as of June 1, 2022, by and between the Company and U.S. Bank Trust Company, National Association, as Trustee						S-3ASR						333-265348						June 1, 2022						4.32

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
4.23						Supplemental Indenture No. 1, dated as of March 3, 2023, to Indenture dated as of June 1, 2022, by and between American Tower Corporation and U.S. Bank Trust Company, National Association, as Trustee, for the 5.500% Senior Notes due 2028 and the 5.650% Senior Notes due 2033						8-K						001-14195						March 3, 2023						4.1
4.24						Supplemental Indenture No. 2, dated as of May 16, 2023, to Indenture dated as of June 1, 2022 by and among the Company, U.S. Bank Trust Company, National Association, as Trustee, and Elavon Financial Services DAC, UK Branch, as Paying Agent, for the 4.125% Senior Notes due 2027 and the 4.625% Senior Notes due 2031						8-K						001-14195						May 16, 2023						4.1
4.25						Supplemental Indenture No. 3, dated as of May 25, 2023, to Indenture dated as of June 1, 2022, by and between American Tower Corporation and U.S. Bank Trust Company, National Association, as Trustee, for the 5.250% Senior Notes due 2028 and the 5.550% Senior Notes due 2033						8-K						001-14195						May 25, 2023						4.1
4.26						Supplemental Indenture No. 4, dated as of September 15, 2023, to Indenture dated as of June 1, 2022, by and between American Tower Corporation and U.S. Bank Trust Company, National Association, as Trustee, for the 5.800% Senior Notes due 2028 and the 5.900% Senior Notes due 2033						8-K						001-14195						September 15, 2023						4.1
4.27						Supplemental Indenture No. 5, dated as of March 7, 2024, to Indenture dated as of June 1, 2022, by and between the Company and U.S. Bank Trust Company, National Association, as Trustee, for the 5.200% Senior Notes due 2029 and the 5.450% Senior Notes due 2034						8-K						001-14195						March 7, 2024						4.1
4.28						Supplemental Indenture No. 6, dated as of May 29, 2024, to Indenture dated as of June 1, 2022, by and among the Company, U.S. Bank Trust Company, National Association, as Trustee, and Elavon Financial Services DAC, UK Branch, as Paying Agent, for the 3.900% Senior Notes due 2030 and the 4.100% Senior Notes due 2034						8-K						001-14195						May 29, 2024						4.1
4.29						Supplemental Indenture No. 7, dated as of November 21, 2024, to Indenture dated as of June 1, 2022, by and between American Tower Corporation and U.S. Bank Trust Company, National Association, as Trustee, for the 5.000% Senior Notes due 2030 and the 5.400% Senior Notes due 2035						8-K						001-14195						November 21, 2024						4.1
4.30						Supplemental Indenture No. 8, dated as of March 14, 2025, to Indenture dated as of June 1, 2022, by and between American Tower Corporation and U.S. Bank Trust Company, National Association, as Trustee, for the 4.900% Senior Notes due 2030 and the 5.350% Senior Notes due 2035						8-K						001-14195						March 14, 2025						4.1
4.31						Supplemental Indenture No. 9, dated as of May 30, 2025, to Indenture dated as of June 1, 2022, by and among the Company, U.S. Bank Trust Company, National Association, as Trustee, and U.S. Bank Europe DAC, UK Branch, as Paying Agent, for the 3.625% Senior Notes due 2032						8-K						001-14195						May 30, 2025						4.1

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
4.32						Indenture dated as of June 2, 2025, by and between the Company and U.S. Bank Trust Company, National Association, as Trustee						S-3ASR						333-287714						June 2, 2025						4.34
4.33						Supplemental Indenture No. 1, dated as of December 5, 2025, to Indenture dated as of June 2, 2025, by and between American Tower Corporation and U.S. Bank Trust Company, National Association, as Trustee, for the 4.700% Senior Notes due 2032						8-K						001-14195						December 5, 2025						4.1
4.34						Third Amended and Restated Indenture, dated May 29, 2015, by and between GTP Acquisition Partners I, LLC, ACC Tower Sub, LLC, DCS Tower Sub, LLC, GTP South Acquisitions II, LLC, GTP Acquisition Partners II, LLC, GTP Acquisition Partners, III, LLC, GTP Infrastructure I, LLC, GTP Infrastructure II, LLC, GTP Infrastructure III, LLC, GTP Towers VIII, LLC, GTP Towers I, LLC, GTP Towers II, LLC, GTP Towers IV, LLC, GTP Towers V, LLC, GTP Towers VII, LLC, GTP Towers IX, LLC, PCS Structures Towers, LLC and GTP TRS I LLC, as Obligors, and The Bank of New York Mellon, as Trustee						10-Q						001-14195						July 29, 2015						4.2
4.35						Description of Registrant’s Securities						Filed herewith as Exhibit 4.35						—						—						—
10.1						American Tower Corporation 2000 Employee Stock Purchase Plan, as amended and restated						10-Q						001-14195						October 28, 2021						10.1
10.2*						American Tower Corporation 2007 Equity Incentive Plan						DEF 14A						001-14195						March 22, 2017						Annex A
10.3*						Amendment to American Tower Corporation 2007 Equity Incentive Plan						8-K						001-14195						March 14, 2017						10.1
10.4*						Form of Restricted Stock Unit Agreement (U.S. Employee / Non-Employee Director) (For grants made March 1, 2019 - December 4, 2022 (Non-Employee Directors) / September 30, 2023 (U.S. Employees)) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						10-K						001-14195						February 27, 2019						10.10
10.5*						Form of Restricted Stock Unit Agreement (Non-U.S. Employee) (For grants made March 1, 2019 – September 30, 2023) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						10-K						001-14195						February 27, 2019						10.11
10.6*						Form of Notice of Grant of Performance-Based Restricted Stock Units Agreement (U.S. Employee) (For grants made April 11, 2020 – September 30, 2023) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						8-K/A						001-14195						April 16, 2020						10.1
10.7*						Form of Notice of Grant of Performance-Based Restricted Stock Units Agreement (Non-U.S. Employee) (For grants made June 1, 2021 – September 30, 2023) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						10-Q						001-14195						July 29, 2021						10.1

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
10.8*						Form of Restricted Stock Unit Agreement (Non-Employee Director) (For grants made December 5, 2022 – September 30, 2023) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						10-K						001-14195						February 23, 2023						10.9
10.9*						Form of Restricted Stock Units Agreement (U.S. Employee) (For grants made October 1, 2023 – December 31, 2023) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						10-Q						001-14195						October 26, 2023						10.1
10.10*						Form of Restricted Stock Units Agreement (Non-U.S. Employee) (For grants made October 1, 2023 – December 31, 2023) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						10-Q						001-14195						October 26, 2023						10.2
10.11*						Form of Restricted Stock Units Agreement (Non-Employee Director) (For grants made beginning October 1, 2023) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						10-Q						001-14195						October 26, 2023						10.3
10.12*						Form of Restricted Stock Units Agreement (U.S. Employee) (For grants made beginning January 1, 2024) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						10-K						001-14195						February 27, 2024						10.14
10.13*						Form of Restricted Stock Units Agreement (Non-U.S. Employee) (For grants made beginning January 1, 2024) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						10-K						001-14195						February 27, 2024						10.15
10.14*						Form of Notice of Grant of Performance-Based Restricted Stock Units Agreement (U.S. Employee) (For grants made beginning February 28, 2024) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						8-K						001-14195						March 14, 2024						10.1
10.15*						Form of Notice of Grant of Performance-Based Restricted Stock Units Agreement (Non-U.S. Employee) (For grants made beginning February 28, 2024) Pursuant to the American Tower Corporation 2007 Equity Incentive Plan, as amended						8-K						001-14195						March 14, 2024						10.2
10.16						Second Amended and Restated Loan and Security Agreement, dated as of March 29, 2018, by and between American Tower Asset Sub, LLC and American Tower Assets Sub II, LLC, as Borrowers, and U.S. Bank National Association, as Trustee for American Tower Trust I, as Lender						10-Q						001-14195						May 2, 2018						10.2
10.17						Second Supplement and Amendment dated as of March 13, 2023 to the Second Amended and Restated Loan and Security Agreement dated as of March 29, 2018, by and among American Tower Asset Sub, LLC and American Tower Asset Sub II, LLC, as Borrowers, and U.S. Bank Trust Company, National Association, as Trustee for American Tower Trust I Secured Tower Revenue Securities as Lender						10-Q						001-14195						April 26, 2023						10.1
10.18						First Amended and Restated Management Agreement, dated as of March 15, 2013, by and between American Tower Asset Sub, LLC and American Tower Asset Sub II, LLC, as Owners, and SpectraSite Communications, LLC, as Manager						10-Q						001-14195						May 1, 2013						10.2

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
10.19						Second Amended and Restated Trust and Servicing Agreement, dated as of March 29, 2018, by and among American Tower Depositor Sub, LLC, as Depositor, Midland Loan Services, a Division of PNC Bank, National Association, as Servicer, and U.S. Bank National Association, as Trustee						10-Q						001-14195						May 2, 2018						10.3
10.20						Second Trust Agreement Supplement and Amendment dated as of March 13, 2023 to Second Amended and Restated Trust and Servicing Agreement dated as of March 29, 2018, by and among American Tower Depositor Sub, LLC, as Depositor, Midland Loan Services, a Division of PNC Bank, National Association, as Servicer, and U.S. Bank Trust Company, National Association, as Trustee						10-Q						001-14195						April 26, 2023						10.3
10.21						Second Amended and Restated Cash Management Agreement, dated as of March 29, 2018, by and among American Tower Asset Sub, LLC and American Tower Asset Sub II, LLC, as Borrowers, and U.S. Bank National Association, as Trustee for American Tower Trust I Secured Tower Revenue Securities, as Lender, Midland Loan Services, a Division of PNC Bank, National Association, as Servicer, U.S. Bank National Association, as Agent, and SpectraSite Communications, LLC, as Manager						10-Q						001-14195						May 2, 2018						10.4
10.22						First Amendment dated as of March 13, 2023 to the Second Amended and Restated Cash Management Agreement dated as of March 29, 2018, by and among American Tower Asset Sub, LLC, American Tower Asset Sub II, LLC, the Borrowers party thereto, U.S. Bank Trust Company, National Association, as Trustee for American Tower Trust I Secured Tower Revenue Securities as Lender, Midland Loan Services, a Division of PNC Bank, National Association, as Servicer, U.S. Bank National Association, as Agent, and Spectrasite Communications, LLC, as Manager						10-Q						001-14195						April 26, 2023						10.2
10.23						Agreement to Sublease by and among ALLTEL Communications, Inc. the ALLTEL entities and American Towers, Inc. and American Tower Corporation, dated December 19, 2000						10-K						001-14195						April 2, 2001						2.2
10.24						Lease and Sublease, dated as of December 14, 2000, by and among SBC Tower Holdings LLC, Southern Towers, Inc., SBC Wireless, LLC and SpectraSite Holdings, Inc.						SpectraSite Holdings, Inc. Quarterly Report on Form 10-Q						000-27217						May 11, 2001						10.2
10.25**						Amendment to Lease and Sublease, dated September 30, 2008, by and between SpectraSite, LLC, American Tower Asset Sub II, LLC, SBC Wireless, LLC and SBC Tower Holdings LLC						10-Q						001-14195						May 8, 2009						10.7
10.26*						Summary Compensation Information for Current Named Executive Officers						8-K						001-14195						March 5, 2025						Item 5.02(e)
10.27						Form of Waiver and Termination Agreement						8-K						001-14195						March 5, 2009						10.4

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
10.28*						American Tower Corporation Severance Plan, as Amended and Restated, as of January 1, 2024						10-K						001-14195						February 27, 2024						10.28
10.29*						American Tower Corporation Severance Plan, Program for Executive Vice Presidents and Chief Executive Officer, as of January 1, 2024						10-K						001-14195						February 27, 2024						10.29
10.30*						Letter Agreement, dated as of January 3, 2025, by and between the Company and Eugene M. Noel						10-K						001-14195						February 25, 2025						10.31
10.31*						Letter Agreement, dated as of January 3, 2025, by and between the Company and Richard Rossi						10-K						001-14195						February 25, 2025						10.32
10.32*						Letter Agreement, dated as of January 26, 2026, by and between the Company and Paul Blanchett						Filed herewith as Exhibit 10.32						—						—						—
10.33						Third Amended and Restated Multicurrency Revolving Credit Agreement, dated as of December 8, 2021, among the Company and certain of its subsidiaries, as Borrower, Toronto Dominion (Texas) LLC, as Administrative Agent and Swingline Lender, BofA Securities, Inc., TD Securities (USA) LLC, Mizuho Bank, Ltd., Barclays Bank PLC, Citibank, N.A., JPMorgan Chase Bank, N.A., RBC Capital Markets and Morgan Stanley MUFG Loan Partners, LLC, as Joint Lead Arrangers and Joint Bookrunners, Mizuho Bank, Ltd., as Syndication Agent, and BofA Securities, Inc., Barclays Bank PLC, Citibank, N.A, JPMorgan Chase Bank, N.A., Royal Bank of Canada and Morgan Stanley MUFG Loan Partners, LLC, as Co-Documentation Agents						10-K						001-14195						February 25, 2022						10.29
10.34						Amendment No. 1 to the Third Amended and Restated Multicurrency Revolving Credit Agreement, dated as of June 29, 2023, among the Company and certain of its subsidiaries as borrowers, Toronto Dominion (Texas) LLC, as administrative agent, and a majority of lenders under the Third Amended and Restated Multicurrency Revolving Credit Agreement, dated as of December 8, 2021						10-Q						001-14195						July 27, 2023						10.2
10.35						Notice of Benchmark Replacement and Amendment No. 2, dated as of June 27, 2024, to the Third Amended and Restated Multicurrency Revolving Credit Agreement, among the Company and certain of its subsidiaries as borrowers, Toronto Dominion (Texas) LLC, as administrative agent, and a majority of lenders under the Third Amended and Restated Multicurrency Revolving Credit Agreement, dated December 8, 2021, as further amended						10-Q						001-14195						July 30, 2024						10.1
10.36						Amendment No. 3 to the Third Amended and Restated Multicurrency Revolving Credit Agreement, dated as of January 28, 2025, among the Company and certain of its subsidiaries as borrowers, Toronto Dominion (Texas) LLC, as administrative agent, and a majority of lenders under the Third Amended and Restated Multicurrency Revolving Credit Agreement, dated as of December 8, 2021, as further amended						10-K						001-14195						February 25, 2025						10.36

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
10.37						Fourth Amended and Restated Revolving Credit Agreement, dated as of December 8, 2021, among the Company, as Borrowers, Toronto Dominion (Texas) LLC, as Administrative Agent and Swingline Lender, BofA Securities, Inc., TD Securities (USA) LLC, Mizuho Bank, Ltd., Barclays Bank PLC, Citibank, N.A., JPMorgan Chase Bank, N.A., RBC Capital Markets and Morgan Stanley MUFG Loan Partners, LLC, as Joint Lead Arrangers and Joint Bookrunners, Mizuho Bank, Ltd., as Syndication Agent, and BofA Securities, Inc., Barclays Bank PLC, Citibank, N.A, JPMorgan Chase Bank, N.A., Royal Bank of Canada and Morgan Stanley MUFG Loan Partners, LLC, as Co-Documentation Agents						10-K						001-14195						February 25, 2022						10.30
10.38						Amendment No. 1 to the Fourth Amended and Restated Revolving Credit Agreement, dated as of June 29, 2023, among the Company and certain of its subsidiaries as borrowers, Toronto Dominion (Texas) LLC, as administrative agent, and a majority of lenders under the Fourth Amended and Restated Revolving Credit Agreement, dated as of December 8, 2021						10-Q						001-14195						July 27, 2023						10.3
10.39						Amendment No. 2 to the Fourth Amended and Restated Revolving Credit Agreement, dated as of January 28, 2025, among the Company and certain of its subsidiaries as borrowers, Toronto Dominion (Texas) LLC, as administrative agent, and a majority of lenders under the Fourth Amended and Restated Revolving Credit Agreement, dated as of December 8, 2021, as further amended						10-K						001-14195						February 25, 2025						10.39
10.40						Second Amended and Restated Term Loan Agreement, dated as of December 8, 2021, among the Company, as Borrower, Mizuho Bank, Ltd., as Administrative Agent; TD Securities (USA) LLC, as Syndication Agent, Bank of America, N.A., Barclays Bank PLC, Citibank, N.A, JPMorgan Chase Bank, N.A., Morgan Stanley MUFG Loan Partners, LLC and Royal Bank of Canada as Co-Documentation Agents, Mizuho Bank, Ltd., TD Securities (USA) LLC, Barclays Bank PLC, BofA Securities, Inc., Citibank, N.A., JPMorgan Chase Bank, N.A., Morgan Stanley MUFG Loan Partners, LLC and RBC Capital Markets as Joint Lead Arrangers and Joint Bookrunners, and the several other lenders that are parties thereto						10-K						001-14195						February 25, 2022						10.31
10.41						Amendment No. 1 to the Second Amended and Restated Term Loan Agreement, dated as of June 29, 2023, among the Company, as borrower, Mizuho Bank, Ltd., as administrative agent, and a majority of the lenders under the Second Amended and Restated Term Loan Agreement, dated as of December 8, 2021						10-Q						001-14195						July 27, 2023						10.1
10.42						Amendment No. 2 to the Second Amended and Restated Term Loan Agreement, dated as of January 28, 2025, among the Company, as borrower, Mizuho Bank, Ltd., as administrative agent, and a majority of the lenders under the Second Amended and Restated Term Loan Agreement, dated as of December 8, 2021, as further amended						10-K						001-14195						February 25, 2025						10.42

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
10.43						Master Agreement, dated as of February 5, 2015, among the Company and Verizon Communications Inc.						10-K						001-14195						February 24, 2015						10.45
10.44						Master Prepaid Lease, dated as of March 27, 2015, among certain subsidiaries of the Company and Verizon Communications Inc.						10-Q						001-14195						April 30, 2015						10.8
10.45						Sale Site Master Lease Agreement, dated as of March 27, 2015, among certain subsidiaries of the Company, Verizon Communications Inc. and certain of its subsidiaries						10-Q						001-14195						April 30, 2015						10.9
10.46						MPL Site Master Lease Agreement, dated as of March 27, 2015, among Verizon Communications Inc. and certain of its subsidiaries and ATC Sequoia LLC						10-Q						001-14195						April 30, 2015						10.10
10.47						Management Agreement, dated as of March 27, 2015, among Verizon Communications Inc., and certain of its subsidiaries and ATC Sequoia LLC						10-Q						001-14195						April 30, 2015						10.11
10.48						Agreement For the Sale and Purchase of the Towers Europe Division of Telxius Telecom, S.A., dated as of January 13, 2021, between Telxius Telecom, S.A. and American Tower International, Inc.						10-K						001-14195						February 25, 2021						10.41
10.49						Agreement For the Sale and Purchase of the Towers LatAm Division of Telxius Telecom, S.A., dated as of January 13, 2021, between Telxius Telecom, S.A. and American Tower International, Inc.						10-K						001-14195						February 25, 2021						10.42
19.1						American Tower Corporation Anti-Insider Trading Policy						Filed herewith as Exhibit 19.1						—						—						—
21						Subsidiaries of the Company						Filed herewith as Exhibit 21						—						—						—
23						Consent of Independent Registered Public Accounting Firm—Deloitte & Touche LLP						Filed herewith as Exhibit 23						—						—						—
31.1						Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002						Filed herewith as Exhibit 31.1						—						—						—
31.2						Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002						Filed herewith as Exhibit 31.2						—						—						—

												Incorporated By Reference
Exhibit No.						Description of Document						Form						File No.						Date of Filing						Exhibit No.
32						Certifications filed pursuant to 18. U.S.C. Section 1350						Filed herewith as Exhibit 32						—						—						—
97						American Tower Corporation Compensation Recovery Policy						Filed herewith as Exhibit 97						—						—						—
101						The following materials from American Tower Corporation’s Annual Report on Form 10-K for the year ended December 31, 2020, formatted in XBRL (Extensible Business Reporting Language): 101.SCH—Inline XBRL Taxonomy Extension Schema Document 101.CAL—Inline XBRL Taxonomy Extension Calculation Linkbase Document 101.LAB—Inline XBRL Taxonomy Extension Label Linkbase Document 101.PRE—Inline XBRL Taxonomy Extension Presentation Linkbase Document 101.DEF—Inline XBRL Taxonomy Extension Definition						Filed herewith as Exhibit 101						—						—						—
104						Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)						—						—						—						—

*			Management contracts and compensatory plans and arrangements required to be filed as exhibits to this Form 10-K pursuant to Item 15(a)(3).

**			The exhibit has been filed separately with the Commission pursuant to an application for confidential treatment. The confidential portions of the exhibit have been omitted and are marked by an asterisk.