0001053507-26-000043.txt : 20260306 0001053507-26-000043.hdr.sgml : 20260306 20260306161758 ACCESSION NUMBER: 0001053507-26-000043 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260304 FILED AS OF DATE: 20260306 DATE AS OF CHANGE: 20260306 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Dowling Ruth T CENTRAL INDEX KEY: 0001960785 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-14195 FILM NUMBER: 26731250 MAIL ADDRESS: STREET 1: C/O AMERICAN TOWER CORPORATION STREET 2: 222 BERKELEY STREET CITY: BOSTON STATE: MA ZIP: 02116 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: AMERICAN TOWER CORP /MA/ CENTRAL INDEX KEY: 0001053507 STANDARD INDUSTRIAL CLASSIFICATION: REAL ESTATE INVESTMENT TRUSTS [6798] ORGANIZATION NAME: 05 Real Estate & Construction EIN: 650723837 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 222 BERKELEY STREET CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 6173757500 MAIL ADDRESS: STREET 1: 222 BERKELEY STREET CITY: BOSTON STATE: MA ZIP: 02116 FORMER COMPANY: FORMER CONFORMED NAME: AMERICAN TOWER SYSTEMS CORP DATE OF NAME CHANGE: 19980128 4 1 wk-form4_1772831875.xml FORM 4 X0508 4 2026-03-04 0 0001053507 AMERICAN TOWER CORP /MA/ AMT 0001960785 Dowling Ruth T 222 BERKELEY STREET BOSTON MA 02116 0 1 0 0 EVP, Chief Admin Ofr, GC & Sec 1 Common Stock 2026-03-04 4 S 0 682 188.51 D 31047 D The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 29, 2025. /s/ Marina A. Breed, as attorney-in-fact 2026-03-06