AMT: Other company developments

Item 8.01 Other Events. American Tower Corporation (the “Company”) is providing an update regarding its relationship with DISH Wireless L.L.C., a subsidiary of DISH Network Corporation (“DISH”). The Company delivered a notice of termination, effective June 2, 2026, to DISH of the Company’s Strategic Collocation Agreement entered into in March 2021 (the “SCA”) and related agreements with DISH. Beginning on January 1, 2026, 100% of DISH revenue has been reflected in churn and this termination is not expected to impact the Company’s financial results for the year ending December 31, 2026. The Company continues to pursue litigation against DISH with respect to its obligations under the SCA. Cautionary Language Regarding Forward-Looking Statements This current report on Form 8-K contains “forward-looking statements” concerning the Company’s goals, beliefs, expectations, strategies, objectives, plans, future operating results and underlying assumptions and other statements that are not necessarily based on historical facts. Actual results may differ materially from those indicated in the Company’s forward-looking statements as a result of various factors, including those factors set forth under the caption “Risk Factors” in Item 1A of its most recent annual report on Form 10-K, and other risks described in documents the Company subsequently files from time to time with the Securities and Exchange Commission. The Company undertakes no obligation to update the information contained in this current report on Form 8-K to reflect subsequently occurring events or circumstances. 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 TOWE