{"schema_version":"secwatch.filing_event.v1","accession":"0001053507-26-000048","form_type":"8-K","ticker":"AMT","cik":"0001053507","company_name":"AMERICAN TOWER CORP /MA/","filed_at":"2026-03-10T23:59:59+00:00","discovered_at":"2026-05-14T18:02:34.473522+00:00","generated_at":"2026-05-15T15:27:25.313060+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"Director Robert D. Hormats to not stand for re-election at 2026 Annual Meeting","bullets":["Robert D. Hormats notified the Company he will not stand for re-election as director at the 2026 Annual Meeting.","His decision did not involve any disagreements with the Company.","He will continue serving on the Nominating & Corporate Governance Committee until the Annual Meeting."],"urls":{"canonical":"https://secwatch.observer/filing/0001053507-26-000048","json":"https://secwatch.observer/filing/0001053507-26-000048.json","markdown":"https://secwatch.observer/filing/0001053507-26-000048.md","text":"https://secwatch.observer/filing/0001053507-26-000048.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1053507/000105350726000048/0001053507-26-000048-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1053507/000105350726000048/amt-20260306.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T15:27:25.313060+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"}