AMERICAN TOWER CORP /MA/ (AMT) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: AMERICAN TOWER CORP /MA/ (AMT) CIK: 0001053507 --- Reporting Owner --- Name: Meyer Robert Joseph CIK: 0001363889 Role: Officer (SVP & Advisor to the CFO) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-06-01 | Code: F (Payment of exercise/tax) Shares: -153 | Price: $187.53 Total Value: $28,692.09 Shares Owned After: 26,286 | Ownership: D (Direct) Footnotes: [F1] Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of restricted stock units previously granted under the 2007 Equity Incentive Plan, as amended. --- Footnotes (Complete Index) --- F1: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of restricted stock units previously granted under the 2007 Equity Incentive Plan, as amended. --- Signature --- /s/ /s/ Marina A. Breed, as attorney-in-fact (2026-06-03)