{"schema_version":"secwatch.filing_event.v1","accession":"0001053507-23-000167","form_type":"8-K","ticker":"AMT","cik":"0001053507","company_name":"AMERICAN TOWER CORP /MA/","filed_at":"2023-12-14T23:59:59+00:00","discovered_at":"2026-05-14T18:03:28.051600+00:00","generated_at":"2026-06-07T12:30:45.820184+00:00","sec_items":["5.03","8.01","9.01"],"event_type":"dividend","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"American Tower declares $1.70/share quarterly dividend; adopts universal proxy rule bylaw amendments","bullets":["Quarterly cash distribution of $1.70 per share, payable Feb 1, 2024 to holders of record Dec 28, 2023.","Bylaws amended effective Dec 13, 2023 to comply with SEC universal proxy rules under Rule 14a-19.","Dividend rate unchanged from prior quarter; no change in quarterly payout."],"urls":{"canonical":"https://secwatch.observer/filing/0001053507-23-000167","json":"https://secwatch.observer/filing/0001053507-23-000167.json","markdown":"https://secwatch.observer/filing/0001053507-23-000167.md","text":"https://secwatch.observer/filing/0001053507-23-000167.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1053507/000105350723000167/0001053507-23-000167-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1053507/000105350723000167/amt-20231213.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-07T12:30:45.820184+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":"cd419f25e4f472d0d6984b4d99aca1ec9dfe6bd9","claim":"AMERICAN TOWER CORP /MA/: Amended by-laws to update advance notice procedures and disclosure requirements for director nominees and proposals to comply with universal proxy rules (Rule 14a-19) (effective 2023-12-13).","evidence_excerpt":"Effective December 13, 2023, the Board of Directors (the “Board”) of American Tower Corporation (the “Company”) adopted amendments to the Company’s Amended and Restated By-Laws (as so amended, the “By-Laws”).","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1053507/000105350723000167/0001053507-23-000167-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2023-12-13"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}