{"schema_version":"secwatch.filing_event.v1","accession":"0000947484-24-000114","form_type":"8-K","ticker":"ACGL","cik":"0000947484","company_name":"ARCH CAPITAL GROUP LTD.","filed_at":"2024-08-27T23:59:59+00:00","discovered_at":"2026-05-14T18:03:16.470669+00:00","generated_at":"2026-05-31T07:32:59.446906+00:00","sec_items":["5.02","8.01","9.01"],"event_type":"leadership","sentiment":"positive","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Arch Capital appoints Dan Houston and Neal Triplett to Board effective August 27, 2024","bullets":["Dan Houston is Chairman & CEO of Principal Financial Group; Neal Triplett is President/CEO of Duke University Management Company.","Both appointed as Class II directors; no committee assignments at this time.","They will receive standard non-employee director compensation in cash and equity.","ACGL CEO cites 'transformational period of growth' and believes appointments validate market leadership."],"urls":{"canonical":"https://secwatch.observer/filing/0000947484-24-000114","json":"https://secwatch.observer/filing/0000947484-24-000114.json","markdown":"https://secwatch.observer/filing/0000947484-24-000114.md","text":"https://secwatch.observer/filing/0000947484-24-000114.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/947484/000094748424000114/0000947484-24-000114-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/947484/000094748424000114/acgl-20240827.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-31T07:32:59.446906+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":"6132a0515f","claim":"Neal Triplett was appointed as Class II Director at ARCH CAPITAL GROUP LTD..","evidence_excerpt":"On August 27, 2024, Arch Capital Group Ltd.’s (“ACGL”) Board of Directors (“Board”) unanimously approved the appointment of Dan Houston and Neal Triplett to serve as Class II directors of the Board, effective August 27, 2024.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/947484/000094748424000114/0000947484-24-000114-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Class II Director"}],"fact_type":"executive_change"},{"claim_id":"7f34fb2565","claim":"Dan Houston was appointed as Class II Director at ARCH CAPITAL GROUP LTD..","evidence_excerpt":"On August 27, 2024, Arch Capital Group Ltd.’s (“ACGL”) Board of Directors (“Board”) unanimously approved the appointment of Dan Houston and Neal Triplett to serve as Class II directors of the Board, effective August 27, 2024.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/947484/000094748424000114/0000947484-24-000114-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Class II Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}