{"schema_version":"secwatch.filing_event.v1","accession":"0001071739-21-000193","form_type":"8-K","ticker":"CNC","cik":"0001071739","company_name":"CENTENE CORP","filed_at":"2021-09-07T23:59:59+00:00","discovered_at":"2026-05-14T18:04:17.066298+00:00","generated_at":"2026-06-29T05:24:37.278669+00:00","sec_items":["5.02","5.03","7.01","8.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Centene appoints Sarah London as Vice Chairman, Brent Layton as President and COO","bullets":["Sarah London appointed Vice Chairman of Board; also elected to Board as Class III director, effective Sept 7, 2021.","Brent Layton appointed President and COO; both report to Chairman/CEO Michael Neidorff.","London's roles: oversight of Health Care Enterprises, technology, digitalization, strategy, compliance, risk management.","Layton's roles: oversight of markets, products, marketing, medical management, international, business development.","Board size increased from 12 to 13; Office of the President renamed Office of the Chairman and CEO."],"urls":{"canonical":"https://secwatch.observer/filing/0001071739-21-000193","json":"https://secwatch.observer/filing/0001071739-21-000193.json","markdown":"https://secwatch.observer/filing/0001071739-21-000193.md","text":"https://secwatch.observer/filing/0001071739-21-000193.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1071739/000107173921000193/0001071739-21-000193-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1071739/000107173921000193/cnc-20210907.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-29T05:24:37.278669+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":"1acd60f8ab","claim":"Brent D. Layton was elected as President and Chief Operating Officer at CENTENE CORP.","evidence_excerpt":"Brent D. Layton as the Company’s President and Chief Operating Officer","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1071739/000107173921000193/0001071739-21-000193-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"President and Chief Operating Officer"}],"fact_type":"executive_change"},{"claim_id":"a42844cfd2","claim":"Sarah M. London was appointed as Class III director at CENTENE CORP.","evidence_excerpt":"Ms. London was appointed to serve on the Company’s Board of Directors.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1071739/000107173921000193/0001071739-21-000193-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Class III director"}],"fact_type":"executive_change"},{"claim_id":"e948727500","claim":"Sarah M. London was elected as Vice Chairman at CENTENE CORP.","evidence_excerpt":"elected Sarah M. London as Vice Chairman of the Board of Directors of Centene Corporation","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1071739/000107173921000193/0001071739-21-000193-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"Vice Chairman"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}