{"schema_version":"secwatch.filing_event.v1","accession":"0000776867-24-000003","form_type":"8-K","ticker":"WTM","cik":"0000776867","company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","filed_at":"2024-02-07T23:59:59+00:00","discovered_at":"2026-05-14T18:03:26.902742+00:00","generated_at":"2026-06-06T07:30:02.194481+00:00","sec_items":["2.02","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"White Mountains reports Q4 2023 ABVPS up 7% to $1,704; full-year ABVPS up 14%","bullets":["Comprehensive income attributable to common shareholders: $288M Q4, $511M full year 2023.","BAM gross written premiums and MSC: $48M Q4, $131M full year; par insured $5.1B Q4.","Ark combined ratio 70% Q4 and 82% full year; gross written premiums up 31% YoY.","Kudu adjusted EBITDA $22M Q4, $57M full year; net investment income up 31% YoY.","Bermuda 15% corporate income tax enacted Dec 2023; White Mountains exempt until 2030, recorded $68M deferred tax benefit."],"urls":{"canonical":"https://secwatch.observer/filing/0000776867-24-000003","json":"https://secwatch.observer/filing/0000776867-24-000003.json","markdown":"https://secwatch.observer/filing/0000776867-24-000003.md","text":"https://secwatch.observer/filing/0000776867-24-000003.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/776867/000077686724000003/0000776867-24-000003-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/776867/000077686724000003/wtm-20240207.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-06T07:30:02.194481+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":"319432ab9960af6f13074233fff4ce4a839c0213","claim":"WHITE MOUNTAINS INSURANCE GROUP LTD reported financial results for the year ended December 31, 2023.","evidence_excerpt":"On February 7, 2024, White Mountains Insurance Group, Ltd. issued a press release announcing its results for the year ended December 31, 2023.","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/776867/000077686724000003/0000776867-24-000003-index.htm","confidence":1.0,"family_label":"Earnings Releases","details":[{"label":"Period","value":"the year ended December 31, 2023"},{"label":"Result","value":"reported results"}],"fact_type":"earnings_release"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}