{"schema_version":"secwatch.filing_event.v1","accession":"0000947484-21-000121","form_type":"8-K","ticker":"ACGL","cik":"0000947484","company_name":"ARCH CAPITAL GROUP LTD.","filed_at":"2021-08-16T23:59:59+00:00","discovered_at":"2026-05-14T18:04:21.362251+00:00","generated_at":"2026-06-29T10:54:41.446568+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"Arch Capital appoints Francis Ebong and Eileen Mallesch to Board of Directors","bullets":["Both appointed effective August 16, 2021, expanding Board from 11 to 13 members.","Francis Ebong brings tech background from Alphabet/Google X, Facebook, Apple, and Deloitte.","Eileen Mallesch has 30+ years of finance/risk experience, including SVP & CFO of Nationwide P&C and board seats at Brighthouse Financial and Fifth Third Bancorp.","Both will serve as Class I directors and receive standard non-employee director compensation."],"urls":{"canonical":"https://secwatch.observer/filing/0000947484-21-000121","json":"https://secwatch.observer/filing/0000947484-21-000121.json","markdown":"https://secwatch.observer/filing/0000947484-21-000121.md","text":"https://secwatch.observer/filing/0000947484-21-000121.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/947484/000094748421000121/0000947484-21-000121-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/947484/000094748421000121/acgl-20210816.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-29T10:54:41.446568+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":[{"claim_id":"818175589e","claim":"Francis Ebong was appointed as Director at ARCH CAPITAL GROUP LTD..","evidence_excerpt":"On August 16, 2021, Arch Capital Group Ltd. (“ACGL”) announced that Francis Ebong and Eileen Mallesch will be appointed to ACGL's Board of Directors (“Board”), effective August 16, 2021.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/947484/000094748421000121/0000947484-21-000121-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"930263bec2","claim":"Eileen Mallesch was appointed as Director at ARCH CAPITAL GROUP LTD..","evidence_excerpt":"On August 16, 2021, Arch Capital Group Ltd. (“ACGL”) announced that Francis Ebong and Eileen Mallesch will be appointed to ACGL's Board of Directors (“Board”), effective August 16, 2021.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/947484/000094748421000121/0000947484-21-000121-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}