{"schema_version":"secwatch.filing_event.v1","accession":"0000776867-22-000012","form_type":"8-K","ticker":"WTM","cik":"0000776867","company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","filed_at":"2022-08-05T23:59:59+00:00","discovered_at":"2026-05-14T18:03:58.136122+00:00","generated_at":"2026-06-24T03:31:42.830426+00:00","sec_items":["2.01","8.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"White Mountains completes sale of NSM Insurance Group to Carlyle for $1.4B net cash proceeds","bullets":["Completed sale of NSM Insurance Group to Carlyle on August 1, 2022, receiving $1.4B net cash proceeds.","Gross proceeds $1.775B; proceeds used to repay NSM debt of $283M and pay transaction costs of $45M.","NSM segment assets and liabilities removed from balance sheet; pro forma total equity increases to $4.49B from $3.67B.","White Mountains generated estimated net gain of $836.9M after tax on the sale.","Pro forma statements show NSM results removed; continuing operations include HG Global/BAM, Ark, Kudu, and Other."],"urls":{"canonical":"https://secwatch.observer/filing/0000776867-22-000012","json":"https://secwatch.observer/filing/0000776867-22-000012.json","markdown":"https://secwatch.observer/filing/0000776867-22-000012.md","text":"https://secwatch.observer/filing/0000776867-22-000012.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/776867/000077686722000012/0000776867-22-000012-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/776867/000077686722000012/wtm-20220801.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-24T03:31:42.830426+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"}