{"schema_version":"secwatch.filing_event.v1","accession":"0000947484-25-000022","form_type":"8-K/A","ticker":"ACGL","cik":"0000947484","company_name":"ARCH CAPITAL GROUP LTD.","filed_at":"2025-02-27T23:59:59+00:00","discovered_at":"2026-05-14T18:03:06.910673+00:00","generated_at":"2026-05-26T03:01:13.334708+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"confidence":"high","headline":"Arch Capital appoints new director Moczarski to compensation and underwriting committees","bullets":["Alexander Moczarski appointed to Compensation and Human Capital Committee effective Feb 27, 2025.","Also appointed to Underwriting Oversight Committee effective same date.","Original board appointment announced Feb 4, 2025; committee assignments now finalized."],"urls":{"canonical":"https://secwatch.observer/filing/0000947484-25-000022","json":"https://secwatch.observer/filing/0000947484-25-000022.json","markdown":"https://secwatch.observer/filing/0000947484-25-000022.md","text":"https://secwatch.observer/filing/0000947484-25-000022.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/947484/000094748425000022/0000947484-25-000022-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/947484/000094748425000022/acgl-20250204.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-26T03:01:13.334708+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"}