Company: SBXD
Filing Date: 2025-08-07
Form Type: 8-K/A
Source: 0001104659-25-075273
Chunk: 26

Company: SilverBox Corp IV
Filing Date: 2025-08-07
Form: 8-K/A
Chunk 26
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 to the Company's Current Report on Form 8-K filed on August 6, 2025).                                                              |
| 10.3†       |     | Form of Lock-Up Agreement (incorporated by reference to Exhibit 10.3 to the Company's Current Report on Form 8-K filed on August 6, 2025).                                                                                                                                   |
| 10.4+†      |     | Form of Preferred Equity Investment Subscription Agreement, dated as of August 4, 2025, by and among the Company, Pubco and certain investors party thereto (incorporated by reference to Exhibit 10.4 to the Company's Current Report on Form 8-K filed on August 6, 2025). |
| 10.5+       |     | Form of Shared Facilities and Services Agreement, by and between PCM and Pubco (incorporated by reference to Exhibit 10.5 to the Company's Current Report on Form 8-K filed on August 6, 2025).                                                                              |
| 10.6        |     | Form of Right of First Refusal Agreement, by and among the Company, PCM, Edward Chin and Pubco (incorporated by reference to Exhibit 10.6 to the Company's Current Report on Form 8-K filed on August 6, 2025).                                                              |
| 10.7+       |     | Standby Equity Purchase Agreement, dated as of August 6, 2025, by and among Pubco, the Company and Yorkville                                                                                                                                                                 |
| 10.8        |     | Form of SEPA Registration Rights Agreement, by and between Pubco and Yorkville                                                                                                                                                                                               |
| 104         |     | Cover Page Interactive Data File (embedded within the Inline XBRL document)                                                                                                                                                                                                  |
| +           |     | Certain schedules, exhibits and similar attachments have been omitted pursuant to Item 601(a)(5) of Regulation S-K. SPAC will provide a copy of such omitted materials to the Securities and Exchange Commission or its staff upon request.                                  |
| †           |     | Certain personally identifiable information has been omitted from this exhibit pursuant to Item 601(a)(6) of Regulation S-K.                                                                                                                                                 |

<div align='center'>SIGNATURE</div>

Pursuant to the requirements
of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto
duly authorized.

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