{"schema_version":"secwatch.filing_event.v1","accession":"0001053507-22-000025","form_type":"8-K","ticker":"AMT","cik":"0001053507","company_name":"AMERICAN TOWER CORP /MA/","filed_at":"2022-03-11T23:59:59+00:00","discovered_at":"2026-05-14T18:04:05.278416+00:00","generated_at":"2026-06-26T23:28:55.040578+00:00","sec_items":["5.02","8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"American Tower elects Kelly Chambliss to board, declares $1.40 quarterly dividend","bullets":["Kelly C. Chambliss elected as director effective March 10, 2022; she is SVP & COO at IBM Consulting.","Chambliss previously served on CoreSite Realty board, which American Tower acquired in December 2021.","Quarterly cash dividend of $1.40 per share declared, payable April 29, 2022 to holders of record April 13, 2022."],"urls":{"canonical":"https://secwatch.observer/filing/0001053507-22-000025","json":"https://secwatch.observer/filing/0001053507-22-000025.json","markdown":"https://secwatch.observer/filing/0001053507-22-000025.md","text":"https://secwatch.observer/filing/0001053507-22-000025.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1053507/000105350722000025/0001053507-22-000025-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1053507/000105350722000025/amt-20220310.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-26T23:28:55.040578+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":"b74328fca8","claim":"Kelly C. Chambliss was elected as director at AMERICAN TOWER CORP /MA/.","evidence_excerpt":"On March 10, 2022, the Board of Directors (the “Board”) of American Tower Corporation (the “Company”) elected Kelly C. Chambliss as a director, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1053507/000105350722000025/0001053507-22-000025-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"}