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 February 12, 2016 8-K 001-14195 February 16, 2016 3.1 4.1 Supplemental Indenture No. 10, dated as of September 27, 2021, 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 4.2 Supplemental Indenture No. 11, dated as of October 5, 2021, by and among American Tower Corporation, 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 10.1 American Tower Corporation 2000 Employee Stock Purchase Plan, as amended and restated Filed herewith as Exhibit 10.1 — — — 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 — — — 32 Certifications filed pursuant to 18. U.S.C. Section 1350 Filed herewith as Exhibit 32 — — — 101.SCH Inline XBRL Taxonomy Extension Schema Document Filed herewith as Exhibit 101 — — — 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
Incorporated By Reference Exhibit No. Description of Document Form File No. Date of Filing Exhibit No. 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: October 28, 2021 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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