{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-180826","form_type":"8-K","ticker":"AMG","cik":"0001004434","company_name":"AFFILIATED MANAGERS GROUP, INC.","filed_at":"2025-08-14T23:59:59+00:00","discovered_at":"2026-05-14T18:02:43.108842+00:00","generated_at":"2026-05-17T12:42:49.135214+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"AMG appoints Marcy Engel to Board; Dwight Churchill retiring after 15 years","bullets":["Marcy Engel appointed as independent director of AMG, effective September 30, 2025.","Dwight D. Churchill retiring from Board effective same date; served since February 2010.","Engel brings experience from Sculptor Capital, Eton Park, and Citigroup; no familial or transaction relationships.","Engel will participate in standard director compensation program and enter indemnification agreement."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-180826","json":"https://secwatch.observer/filing/0001193125-25-180826.json","markdown":"https://secwatch.observer/filing/0001193125-25-180826.md","text":"https://secwatch.observer/filing/0001193125-25-180826.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1004434/000119312525180826/0001193125-25-180826-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1004434/000119312525180826/d95092d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T12:42:49.135214+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"}