Robert D. Hormats Ceases to be Director of American Tower Corp /MA/

This filing pertains to Robert D. Hormats, former director of American Tower Corp /MA/ (AMT). Mr. Hormats did not stand for re-election at the issuer's 2026 Annual Meeting of Stockholders. Consequently, effective May 20, 2026, he is no longer a director of the company. Following this change, Mr. Hormats continues to hold 9597 shares of Common Stock, with ownership designated as direct.