{"schema_version":"secwatch.filing_event.v1","accession":"0001053507-26-000145","form_type":"8-K","ticker":"AMT","cik":"0001053507","company_name":"AMERICAN TOWER CORP /MA/","filed_at":"2026-09-18T12:50:18+00:00","discovered_at":"2026-09-18T12:55:01.558394+00:00","generated_at":"2026-09-18T12:55:07.044951+00:00","sec_items":["5.02","8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"American Tower elects Kristen M. Ludgate to board; declares $1.79 quarterly dividend","bullets":["Kristen M. Ludgate elected director and Compensation and Human Capital Committee member, effective Sept 17, 2026.","Ludgate was HP Inc. Chief People Officer (2021-2025); prior 15+ years at 3M in HR, legal, compliance roles.","Quarterly cash distribution of $1.79 per share declared, payable Oct 20, 2026 to holders of record Sept 30, 2026.","Ludgate serves on Associated Banc-Corp board (Compensation chair) and previously on OpenText board."],"urls":{"canonical":"https://secwatch.observer/filing/0001053507-26-000145","json":"https://secwatch.observer/filing/0001053507-26-000145.json","markdown":"https://secwatch.observer/filing/0001053507-26-000145.md","text":"https://secwatch.observer/filing/0001053507-26-000145.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1053507/000105350726000145/0001053507-26-000145-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1053507/000105350726000145/amt-20260917.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-18T12:55:07.044951+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}