{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-090712","form_type":"8-K","ticker":"SBXD","cik":"0002015947","company_name":"SilverBox Corp IV","filed_at":"2026-08-05T11:06:57+00:00","discovered_at":"2026-08-05T11:10:00.421066+00:00","generated_at":"2026-08-05T11:10:04.959558+00:00","sec_items":["1.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"SilverBox Corp IV extends business combination deadline to Dec 31, 2026","bullets":["Second Amendment to BCA extends Outside Date from Aug 6, 2026 to Dec 31, 2026.","Further extension allowed if SPAC obtains its own deadline extension, subject to mutual agreement.","Amendment signed by all parties on Aug 4, 2026; original BCA dated Aug 6, 2025.","Deal with Parataxis Holdings (digital assets/crypto) remains pending; SPAC avoids immediate liquidation.","Prior First Amendment was dated May 1, 2026; this is the second amendment."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-090712","json":"https://secwatch.observer/filing/0001104659-26-090712.json","markdown":"https://secwatch.observer/filing/0001104659-26-090712.md","text":"https://secwatch.observer/filing/0001104659-26-090712.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2015947/000110465926090712/0001104659-26-090712-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2015947/000110465926090712/tm2622195d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-08-05T11:10:04.959558+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"}