{"schema_version":"secwatch.filing_event.v1","accession":"0001096343-23-000213","form_type":"8-K","ticker":"MKL","cik":"0001096343","company_name":"MARKEL GROUP INC.","filed_at":"2023-11-30T23:59:59+00:00","discovered_at":"2026-05-14T18:03:28.209709+00:00","generated_at":"2026-06-07T19:47:13.650309+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.45,"calibrated_materiality_score":0.45,"confidence":"high","headline":"Markel Group President & COO Robert Cox to depart Dec 31, 2023; divisions realigned under Jeremy Noble","bullets":["Robert Cox, President and COO Insurance Operations, will leave Markel effective December 31, 2023 after five years.","Markel Specialty and International divisions will now report directly to Jeremy Noble, President, Insurance.","Simon Wilson, Alex Martin, and Bryan Sanders will report to Noble effective December 31.","Cox oversaw global insurance operations since 2018; company cites his contributions to profitable growth."],"urls":{"canonical":"https://secwatch.observer/filing/0001096343-23-000213","json":"https://secwatch.observer/filing/0001096343-23-000213.json","markdown":"https://secwatch.observer/filing/0001096343-23-000213.md","text":"https://secwatch.observer/filing/0001096343-23-000213.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1096343/000109634323000213/0001096343-23-000213-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1096343/000109634323000213/mkl-20231130.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-07T19:47:13.650309+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":"53ec2ae6b1","claim":"Robert Cox departed as President and Chief Operating Officer, Insurance Operations at MARKEL GROUP INC..","evidence_excerpt":"On November 30, 2023, Markel, the insurance operations within Markel Group Inc. (the Company), announced that the Company and Robert Cox, the President and Chief Operating Officer, Insurance Operations of Markel, mutually agreed on a departure date of December 31, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1096343/000109634323000213/0001096343-23-000213-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"departed"},{"label":"Role","value":"President and Chief Operating Officer, Insurance Operations"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}