{"schema_version":"secwatch.filing_event.v1","accession":"0000731766-25-000239","form_type":"8-K","ticker":"UNH","cik":"0000731766","company_name":"UNITEDHEALTH GROUP INC","filed_at":"2025-08-20T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.256582+00:00","generated_at":"2026-05-17T11:17:58.437283+00:00","sec_items":["7.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.45,"calibrated_materiality_score":0.45,"confidence":"high","headline":"UnitedHealth Group appoints new lead independent director, creates Public Responsibility Committee","bullets":["F. William McNabb appointed lead independent director, replacing Michele Hooper; McNabb served as chairman and CEO of Vanguard Group.","New Public Responsibility Committee formed to oversee financial, regulatory, and reputational risks; chaired by Michele Hooper.","Committee leadership refreshed: Timothy Flynn (Audit), Paul Garcia (Compensation), Charles Baker (Governance), Valerie Montgomery Rice (Health/Clinical).","Four other committees' membership updated; details in committee charters available on company website."],"urls":{"canonical":"https://secwatch.observer/filing/0000731766-25-000239","json":"https://secwatch.observer/filing/0000731766-25-000239.json","markdown":"https://secwatch.observer/filing/0000731766-25-000239.md","text":"https://secwatch.observer/filing/0000731766-25-000239.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/731766/000073176625000239/0000731766-25-000239-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/731766/000073176625000239/unh-20250820.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T11:17:58.437283+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"}