{"schema_version":"secwatch.filing_event.v1","accession":"0001593275-26-000022","form_type":"8-K","ticker":"HG","cik":"0001593275","company_name":"Hamilton Insurance Group, Ltd.","filed_at":"2026-02-25T23:59:59+00:00","discovered_at":"2026-05-14T18:02:35.578649+00:00","generated_at":"2026-05-16T00:18:33.316953+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":"Hamilton Insurance appoints Marc Roston to Board, replacing Hawes Bostic effective Feb 20","bullets":["Marc Roston appointed to Board by Magnitude Capital, replacing Hawes Bostic effective February 20, 2026.","Roston brings over 30 years investment experience; currently Senior Research Scholar at Stanford and Operating Partner at DFW Capital Partners.","Bostic's departure not related to any disagreement with Hamilton on operations, policies, or practices.","Roston will serve on Board's Investments and Technology Committees; will not receive compensation from Hamilton."],"urls":{"canonical":"https://secwatch.observer/filing/0001593275-26-000022","json":"https://secwatch.observer/filing/0001593275-26-000022.json","markdown":"https://secwatch.observer/filing/0001593275-26-000022.md","text":"https://secwatch.observer/filing/0001593275-26-000022.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1593275/000159327526000022/0001593275-26-000022-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1593275/000159327526000022/hg-20260220.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T00:18:33.316953+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"}