Item 6. EXHIBITS Copy as markdown Incorporated By Reference Exhibit No. Description of Document Form File No. Date of Filing Exhibit No. 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 4.1 Supplemental Indenture No. 8, dated as of March 14, 2025, by and between American Tower Corporation and U.S. Bank Trust Company, National Association, as trustee 8-K 001-14195 March 14, 2025 4.1 10.1 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 10.2 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 10.3 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 10.4 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 10.5 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 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 — — — 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) — — — —
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
AMERICAN TOWER CORPORATION Date: April 29, 2025 By: /S/ RODNEY M. SMITH Rodney M. Smith Executive Vice President, Chief Financial Officer and Treasurer (Duly Authorized Officer and Principal Financial Officer)
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