{"schema_version":"secwatch.filing_event.v1","accession":"0000947484-26-000004","form_type":"8-K","ticker":"ACGL","cik":"0000947484","company_name":"ARCH CAPITAL GROUP LTD.","filed_at":"2026-01-22T23:59:59+00:00","discovered_at":"2026-05-14T18:02:38.097278+00:00","generated_at":"2026-05-16T09:12:16.704302+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Director John Vollaro to not stand for reelection after 24 years with Arch Capital Group","bullets":["Vollaro will not stand for reelection at the 2026 Annual Meeting; term ends May 5, 2026.","He served as Chief Financial Officer from 2002 to 2009 and as a director since 2009.","Departure is not due to any disagreement with the Company's operations, policies, or practices.","Board Chair John Pasquesi thanked Vollaro for his leadership and contributions to shareholder value."],"urls":{"canonical":"https://secwatch.observer/filing/0000947484-26-000004","json":"https://secwatch.observer/filing/0000947484-26-000004.json","markdown":"https://secwatch.observer/filing/0000947484-26-000004.md","text":"https://secwatch.observer/filing/0000947484-26-000004.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/947484/000094748426000004/0000947484-26-000004-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/947484/000094748426000004/acgl-20260115.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T09:12:16.704302+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"}