{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-311380","form_type":"8-K","ticker":"AMG","cik":"0001004434","company_name":"AFFILIATED MANAGERS GROUP, INC.","filed_at":"2025-12-08T23:59:59+00:00","discovered_at":"2026-05-14T18:02:38.470669+00:00","generated_at":"2026-05-16T13:54:30.097967+00:00","sec_items":["8.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.45,"calibrated_materiality_score":0.45,"confidence":"medium","headline":"AMG to redeem all outstanding 5.15% Convertible Trust Preferred Securities due 2037","bullets":["Redemption notice sent Dec 8, 2025; redemption date is Dec 29, 2025.","Redemption price: 100% of principal plus accrued unpaid interest to Dec 29.","Proceeds from previously announced senior notes offering will fund redemption and settlement.","Refinancing simplifies capital structure while maintaining long-duration debt profile.","Redemption is not conditioned on consummation of the senior notes offering."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-311380","json":"https://secwatch.observer/filing/0001193125-25-311380.json","markdown":"https://secwatch.observer/filing/0001193125-25-311380.md","text":"https://secwatch.observer/filing/0001193125-25-311380.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1004434/000119312525311380/0001193125-25-311380-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1004434/000119312525311380/d93774d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T13:54:30.097967+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"}