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SilverBox Corp IV

For the period ended Jun 24, 2025. Filed Jun 27, 2025.

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A notice of a major event between regular reports, such as results, a deal or a change of executives. It is often the first formal record of the news.

Jun 24, 2025 · Filed Jun 27, 2025

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SBXD$11.39+2.6%Stored close · as of Sep 25, 2026
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

Current Report

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (Date of earliest event reported): June 24, 2025

SilverBox Corp IV

(Exact Name of Registrant as Specified in Its Charter)

Cayman Islands001-42214N/A
(State or Other Jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)
1250 S. Capital of Texas Highway, Building 2, Suite 285 Austin, TX78746
(Address of Principal Executive Offices)(Zip Code)

(Registrant’s Telephone Number, Including Area Code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
¨Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
¨Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered
Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-third of one redeemable warrantSBXD.UNew York Stock Exchange LLC
Class A ordinary shares included as part of the unitsSBXDNew York Stock Exchange LLC
Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50SBXD WSNew York Stock Exchange LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR § 230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR § 240.12b-2).

Emerging growth companyx

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.¨

| Item 5.02. | Departure of Directors or Certain Officers;

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.