{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-087513","form_type":"8-K","ticker":"SBXD","cik":"0002015947","company_name":"SilverBox Corp IV","filed_at":"2025-09-04T23:59:59+00:00","discovered_at":"2026-05-14T18:02:45.818469+00:00","generated_at":"2026-05-17T08:22:37.851308+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"SilverBox Corp IV: S-4 filed for business combination with Parataxis","bullets":["Parataxis Holdings Inc. filed an S-4 Registration Statement with the SEC on Sept 3, 2025, for the proposed combination with SilverBox Corp IV.","The S-4 includes a preliminary proxy statement for SilverBox shareholders and a prospectus for Pubco.","The filing provides additional information about the terms, risks, and conditions of the business combination.","Completion of the transaction requires approval by SilverBox shareholders and other customary closing conditions.","Shareholders are urged to read the definitive proxy statement/prospectus when available for full details."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-087513","json":"https://secwatch.observer/filing/0001104659-25-087513.json","markdown":"https://secwatch.observer/filing/0001104659-25-087513.md","text":"https://secwatch.observer/filing/0001104659-25-087513.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2015947/000110465925087513/0001104659-25-087513-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2015947/000110465925087513/tm2525283d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T08:22:37.851308+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"}