AMT: Other company developments

Item 8.01 Other Events. On November 9, 2026, American Tower Corporation (the “Company”) issued a press release (the “Press Release”) announcing that it had priced its registered public offering of senior unsecured notes due 2031 (the “2031 notes”) in an aggregate principal amount of $450.0 million, senior unsecured notes due 2033 (the “2033 notes”) in an aggregate principal amount of $500.0 million and senior unsecured notes due 2036 (the “2036 notes”) in an aggregate principal amount of $550.0 million. The 2031 notes will be consolidated, form a single series and be fully fungible, with the Company’s outstanding $500,000,000 5.300% senior unsecured notes due 2031, the 2033 notes will be consolidated, form a single series and be fully fungible, with the Company’s outstanding $500,000,000 5.560% senior unsecured notes due 2033, and the 2036 notes will be consolidated, form a single series and be fully fungible, with the Company’s outstanding $600,000,000 5.750% senior unsecured notes due 2036, each issued on September 14, 2026. The 2031 notes will have an interest rate of 5.300% per annum and are being issued at a price equal to 99.387% of their face value. The 2033 notes will have an interest rate of 5.560% per annum and are being issued at a price equal to 99.369% of their face value. The 2036 notes will have an interest rate of 5.750% per annum and are being issued at a price equal to 98.986% of their face value. A copy of the Press Release is filed herewith as Exhibit 99.1 and is incorporated herein by reference. Item 9.01 Financial Statements and Exhibits. (d) Exhibits Exhibit No. Description 99.1 Press Release, dated November 9 , 2026. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). SIGNATURE Pursuant to the requirements of the Secu