secwatch.observer — SEC 8-K summary ====================================== Issuer: OCTAVE SPECIALTY GROUP INC (OSG) CIK: 0000874501 Form: 8-K Filed at: 2025-09-29T23:59:59+00:00 Accession: 0001628280-25-043087 Event type: m_and_a Sentiment: positive Materiality: 0.85 Item codes: 1.01, 2.01, 3.02, 7.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Ambac completes $420M sale of legacy financial guarantee businesses to Oaktree ------------------------------------------------------------------------------ - Sale of Ambac Assurance Corp and Ambac Assurance UK to Oaktree for $420M cash closed on September 29, 2025. - Completion transforms Ambac into pure-play MGA and specialty insurance platform; CEO calls it defining moment. - Issued Oaktree a warrant for 5,092,707 common shares with conversion options capped at $70M aggregate. - Moelis & Company and Debevoise & Plimpton advised Ambac; BlackRock and Kirkland & Ellis advised Oaktree. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/874501/000162828025043087/0001628280-25-043087-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/874501/000162828025043087/ambc-20250929.htm HTML page: https://secwatch.observer/filing/0001628280-25-043087 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer