{"schema_version":"secwatch.filing_event.v1","accession":"0000776867-23-000008","form_type":"8-K","ticker":"WTM","cik":"0000776867","company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","filed_at":"2023-05-25T23:59:59+00:00","discovered_at":"2026-05-14T18:03:42.210527+00:00","generated_at":"2026-06-14T15:14:32.091584+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"White Mountains elects Weston M. Hicks Chairman; Morgan Davis retires from Board","bullets":["Weston M. Hicks elected Chairman of the Board, effective May 25, 2023.","Morgan W. Davis retired from the Board; retirement not due to any disagreement.","Davis served as Chairman for 6 years and as director for 17 years.","CEO Manning Rountree expressed gratitude for Davis's mentorship over 20 years."],"urls":{"canonical":"https://secwatch.observer/filing/0000776867-23-000008","json":"https://secwatch.observer/filing/0000776867-23-000008.json","markdown":"https://secwatch.observer/filing/0000776867-23-000008.md","text":"https://secwatch.observer/filing/0000776867-23-000008.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/776867/000077686723000008/0000776867-23-000008-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/776867/000077686723000008/wtm-20230525.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-14T15:14:32.091584+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":"3f144a8920","claim":"Morgan W. Davis retired as Director at WHITE MOUNTAINS INSURANCE GROUP LTD.","evidence_excerpt":"Morgan W. Davis retired from the Board","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/776867/000077686723000008/0000776867-23-000008-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"retired"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"89b839098e","claim":"Weston M. Hicks was elected as Chairman of the Board at WHITE MOUNTAINS INSURANCE GROUP LTD.","evidence_excerpt":"elected Weston M. Hicks as Chairman of the Board","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/776867/000077686723000008/0000776867-23-000008-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"Chairman of the Board"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}