{"schema_version":"secwatch.filing_event.v1","accession":"0001053507-21-000165","form_type":"8-K","ticker":"AMT","cik":"0001053507","company_name":"AMERICAN TOWER CORP /MA/","filed_at":"2021-12-16T23:59:59+00:00","discovered_at":"2026-05-14T18:04:11.289729+00:00","generated_at":"2026-06-28T00:23:26.019190+00:00","sec_items":["5.02","8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"confidence":"high","headline":"American Tower elects Teresa H. Clarke to board; declares $1.39 quarterly dividend","bullets":["Teresa H. Clarke elected to Board of Directors, effective December 15, 2021; will serve on Audit Committee.","Clarke is Chair of Africa.com LLC; former Managing Director at Goldman Sachs (2004-2010).","Quarterly cash distribution of $1.39 per share declared, payable Jan 14, 2022 to holders of record Dec 27, 2021."],"urls":{"canonical":"https://secwatch.observer/filing/0001053507-21-000165","json":"https://secwatch.observer/filing/0001053507-21-000165.json","markdown":"https://secwatch.observer/filing/0001053507-21-000165.md","text":"https://secwatch.observer/filing/0001053507-21-000165.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1053507/000105350721000165/0001053507-21-000165-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1053507/000105350721000165/amt-20211215.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-28T00:23:26.019190+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":[{"claim_id":"8fb25e87bc","claim":"Teresa H. Clarke was elected as Director at AMERICAN TOWER CORP /MA/.","evidence_excerpt":"On December 15, 2021, the Board of Directors (the “Board”) of American Tower Corporation (the “Company”) elected Teresa H. Clarke as a director and member of its Audit Committee, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1053507/000105350721000165/0001053507-21-000165-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}