News & Events

by reference. SIGNATURE 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 hereunto duly authorized. AMERICAN TOWER CORPORATION (Registrant) Date: May 7, 2026 By: /s/ Rodney M. Smith Rodney M. Smith Executive Vice President, Chief Financial Officer and Treasurer

Entry into a Material Definitive Agreement. On May 7, 2026, American Tower Corporation (the “Company”) entered into three separate amendment agreements (each an “Amendment” and collectively, the “Amendments”) to amend the agreements for each of its (i) $6.0 billion senior unsecured multicurrency revolving credit facility, as amended and restated on December 8, 2021, as further amended, with Toronto Dominion (Texas) LLC (“TD”) as Administrative Agent (as defined therein) (the “2021 Multicurren…

Results of Operations and Financial Condition. On April 28, 2026, American Tower Corporation (the “Company”) issued a press release (the “Press Release”) announcing financial results for the quarter ended March 31, 2026. A copy of the Press Release is furnished herewith as Exhibit 99.1. Exhibit 99.1 is furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of th…

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. (b) On March 6, 2026, Robert D. Hormats notified the Corporate Secretary of American Tower Corporation (the “Company”) of his decision to not stand for re-election as a director at the Company’s 2026 Annual Meeting of Stockholders (the “Annual Meeting”). Mr. Hormats’ decision to not stand for re-election did not involve any disagreements with the C…

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. (e) On February 25, 2026, the Compensation and Human Capital Committee (the “Compensation Committee”) of the Board of Directors of American Tower Corporation (the “Company”) considered the compensation arrangements with the Company’s executive officers. The information in the table below sets forth the determinations of the Compensation Committee w…

Results of Operations and Financial Condition. On February 24, 2026, American Tower Corporation (the “Company”) issued a press release (the “Press Release”) announcing financial results for the year ended December 31, 2025. A copy of the Press Release is furnished herewith as Exhibit 99.1. Exhibit 99.1 is furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of…

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. (c) On January 26, 2026, American Tower Corporation (the “Company”) appointed Paul Blanchett as its Senior Vice President and Chief Accounting Officer (Principal Accounting Officer), effective April 27, 2026 (the “Start Date”). As previously disclosed, the Company’s current Senior Vice President and Chief Accounting Officer, Robert J. Meyer, will r…

Entry into a Material Definitive Agreement. On December 5, 2025, American Tower Corporation (the “Company”) completed a registered public offering of $850.0 million aggregate principal amount of its 4.700% senior unsecured notes due 2032 (the “Notes”), which resulted in aggregate net proceeds to the Company of approximately $839.5 million, after deducting commissions and estimated expenses. The Company intends to use the net proceeds to repay existing indebtedness under its $4.0 billion senio…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. Please refer to the discussion under

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. (b) On November 5, 2025, Robert J. Meyer communicated his intention to retire from his role as Senior Vice President and Chief Accounting Officer of American Tower Corporation (the “Company”). The Company is undertaking a search process to replace Mr. Meyer, who has agreed to remain with the Company in his current role until his successor is appoin…

Results of Operations and Financial Condition. On October 28, 2025, American Tower Corporation (the “Company”) issued a press release (the “Press Release”) announcing financial results for the quarter ended September 30, 2025. A copy of the Press Release is furnished herewith as Exhibit 99.1. Exhibit 99.1 is furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities…

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. (b) On September 16, 2025, Olivier Puech communicated his intention to retire from his role as American Tower Corporation's (the “Company”) Executive Vice President and President, International, effective January 2, 2026.

Entry into a Material Definitive Agreement. On September 16, 2025, American Tower Corporation (the “Company”) completed a registered public offering of $200.0 million aggregate principal amount of its 4.900% senior unsecured notes due 2030 (the “2030 notes”) and $375.0 million aggregate principal amount of its 5.350% senior unsecured notes due 2035 (the “2035 notes” and, together with the 2030 notes, the “Notes”), which resulted in aggregate net proceeds to the Company of approximately $587.8…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. Please refer to the discussion under

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. (d) On August 22, 2025, the Board of Directors (the “Board”) of American Tower Corporation (the “Company”) elected Eugene (“Gene”) F. Reilly as a director and member of its Compensation Committee, effective immediately. In accordance with the Company’s Amended and Restated By-Laws, Mr. Reilly will serve as a director until the Company’s 2026 Annual…

Results of Operations and Financial Condition. On July 29, 2025, American Tower Corporation (the “Company”) issued a press release (the “Press Release”) announcing financial results for the quarter ended June 30, 2025. A copy of the Press Release is furnished herewith as Exhibit 99.1. Exhibit 99.1 is furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. Please refer to the discussion under

Entry into a Material Definitive Agreement. On May 30, 2025, American Tower Corporation (the “Company”) completed a registered public offering of 500.0 million euros (“EUR”) aggregate principal amount of its 3.625% senior unsecured notes due 2032 (the “notes”), which resulted in aggregate net proceeds to the Company of approximately 496.8 million EUR (approximately $558.4 million at the EUR/U.S. dollar exchange rate of 1.00 EUR = $1.1240, as reported by Bloomberg on May 19, 2025), after deduc…

Results of Operations and Financial Condition. On April 29, 2025, American Tower Corporation (the “Company”) issued a press release (the “Press Release”) announcing financial results for the quarter ended March 31, 2025. A copy of the Press Release is furnished herewith as Exhibit 99.1. Exhibit 99.1 is furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of th…