{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-107351","form_type":"8-K","ticker":"SBXD","cik":"0002015947","company_name":"SilverBox Corp IV","filed_at":"2025-11-06T23:59:59+00:00","discovered_at":"2026-05-14T18:02:41.319678+00:00","generated_at":"2026-05-17T00:03:11.384330+00:00","sec_items":["1.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"SilverBox Corp IV amends Preferred Equity Subscription Agreements to allow Bitcoin collateralization","bullets":["Amendment removes prohibition on pledging Bitcoin purchased with $31M preferred equity proceeds.","Permits Company to use Bitcoin as collateral or credit support for lending or other financing arrangements.","Original agreements: 3,100,000 preferred units at $10/unit for aggregate $31,000,000, entered Aug 6, 2025.","Amendment date: October 31, 2025; parties: Pubco, Company, and Preferred Equity Investors.","Business combination with Parataxis Holdings still pending; this is a related financing term change."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-107351","json":"https://secwatch.observer/filing/0001104659-25-107351.json","markdown":"https://secwatch.observer/filing/0001104659-25-107351.md","text":"https://secwatch.observer/filing/0001104659-25-107351.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2015947/000110465925107351/0001104659-25-107351-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2015947/000110465925107351/tm2524487d10_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T00:03:11.384330+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"}