{"schema_version":"secwatch.filing_event.v1","accession":"0000874501-24-000137","form_type":"8-K/A","ticker":"OSG","cik":"0000874501","company_name":"OCTAVE SPECIALTY GROUP INC","filed_at":"2024-06-05T23:59:59+00:00","discovered_at":"2026-05-14T18:03:22.237231+00:00","generated_at":"2026-06-01T06:24:36.530011+00:00","sec_items":["8.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.8,"calibrated_materiality_score":0.8,"confidence":"high","headline":"Ambac agrees to sell Ambac Assurance to American Acorn for $420M; shareholder vote required","bullets":["Purchase price of $420M plus adjustment amount for 100% of Ambac Assurance Corporation shares.","Buyer American Acorn Corp. also gets a warrant for 9.9% of fully diluted Ambac common stock.","Transaction requires stockholder approval under DGCL Section 271; board unanimously recommends.","Closing subject to regulatory approvals, other conditions; sponsor equity commitment letter in place.","Transition services and employment agreements with key employees effective at closing."],"urls":{"canonical":"https://secwatch.observer/filing/0000874501-24-000137","json":"https://secwatch.observer/filing/0000874501-24-000137.json","markdown":"https://secwatch.observer/filing/0000874501-24-000137.md","text":"https://secwatch.observer/filing/0000874501-24-000137.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000137/0000874501-24-000137-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000137/ambc-20240604.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-01T06:24:36.530011+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"}