secwatch.observer — SEC 8-K summary ====================================== Issuer: WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) CIK: 0000776867 Form: 8-K Filed at: 2025-09-03T23:59:59+00:00 Accession: 0000776867-25-000016 Event type: m_and_a Sentiment: neutral Materiality: 0.70 Item codes: 8.01 LLM model: deepseek-v4-flash:cloud@v2 White Mountains closes $224M acquisition of 50% of Distinguished Programs, now holds 51% control -------------------------------------------------------------------------------- - Closed acquisition of 50% of AQ Phoenix Parent, L.P. (Distinguished Programs) for $224M in cash on Sept. 2, 2025. - Combined with existing ~1% interest, White Mountains now owns a 51% controlling interest in Distinguished Programs. - Transaction closed via indirect wholly owned subsidiaries WM Monroe Holdings, Inc. and WM Phoenix GP, LLC. - No additional financing or regulatory conditions disclosed post-closing. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/776867/000077686725000016/0000776867-25-000016-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/776867/000077686725000016/wtm-20250902.htm HTML page: https://secwatch.observer/filing/0000776867-25-000016 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer