{"url_path":"/sec/sbxd/8-k/2026-05-12/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-12","source_url":"https://www.sec.gov/Archives/edgar/data/2015947/0001104659-26-059390-index.html","accession_number":"0001104659-26-059390","cik":"0002015947","ticker":"SBXD","issuer_name":"SilverBox Corp IV","edgar_url":"https://www.sec.gov/Archives/edgar/data/2015947/0001104659-26-059390-index.html","primary_entity_key":"0002015947","primary_entity_name":"SilverBox Corp IV"},"word_count":388,"has_tables":true,"body_markdown":"false\n0002015947\n00-0000000\n\n0002015947\n\n2026-05-12\n2026-05-12\n\n0002015947\n\nSBXD:UnitsEachConsistingOfOneClassaOrdinaryShare0.0001ParValueAndOnethirdOfOneRedeemableWarrantMember\n\n2026-05-12\n2026-05-12\n\n0002015947\n\nSBXD:ClassaOrdinarySharesIncludedAsPartOfUnitsMember\n\n2026-05-12\n2026-05-12\n\n0002015947\n\nSBXD:RedeemableWarrantsIncludedAsPartOfUnitsEachWholeWarrantExercisableForOneClassaOrdinaryShareAtExercisePriceOf11.50Member\n\n2026-05-12\n2026-05-12\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n \n\n**UNITED\nSTATES**\n\n**SECURITIES\nAND EXCHANGE COMMISSION**\n\n**Washington,\nD.C. 20549**\n\n \n\n**FORM** **8-K**\n\n \n\n**CURRENT REPORT**\n\n \n\n**PURSUANT TO SECTION 13 OR 15(d) OF THE\nSECURITIES EXCHANGE ACT OF 1934**\n\n \n\nDate of Report (Date of earliest event reported): May 12, 2026\n\n \n\n**SILVERBOX CORP IV**\n\n(Exact name of registrant as specified in its charter)\n\n \n\n**Cayman\nIslands**\n \n**001-42214**\n \n**N/A**\n\n(State or other jurisdiction\n\nof incorporation)\n \n(Commission\n\nFile Number)\n \n(IRS Employer\n\nIdentification No.)\n\n \n\n**8701\nBee Cave Road**\n**East\nBuilding, Suite 310**\n**Austin**,\n**TX**\n  **78746**\n\n(Address of principal executive\noffices, including zip code)\n\n \n\nRegistrant’s telephone number, including area code: (512)\n575-3637  \n\n \n\n**Not Applicable**\n\n(Former name or former address, if changed since last report)  \n\n \n\nCheck the appropriate\nbox below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the\nfollowing provisions:\n\n \n\nx\nWritten communications pursuant to\nRule 425 under the Securities Act (17 CFR 230.425)\n\n \n \n\n¨\nSoliciting material pursuant to Rule 14a-12\nunder the Exchange Act (17 CFR 240.14a-12)\n\n \n \n\n¨\nPre-commencement communications pursuant to Rule 14d-2(b) under\nthe Exchange Act (17 CFR 240.14d-2(b))\n\n \n \n\n¨\nPre-commencement communications pursuant to Rule 13e-4(c) under\nthe Exchange Act (17 CFR 240.13e-4(c))\n\n \n\nSecurities registered\npursuant to Section 12(b) of the Act:\n\n \n\n**Title\nof each class**\n** **\n**Trading\nSymbol(s)**\n** **\n**Name\nof each exchange\non which registered**\n\nUnits, each consisting of one Class A ordinary share, $0.0001 par value, and one-third of one redeemable warrant\n \nSBXD.U\n \nNew York Stock Exchange LLC\n\nClass A ordinary shares included as part of the units\n \nSBXD\n \nNew York Stock Exchange LLC\n\nRedeemable Warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50\n \nSBXD.WS\n \nNew York Stock Exchange LLC\n\n \n\nIndicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405\nof this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).\n\n \n\nEmerging growth\ncompany x\n\n \n\nIf an emerging\ngrowth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any\nnew or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨"}