Company: SBXD
Filing Date: 2025-09-04
Form Type: 425
Source: 0001104659-25-087514
Chunk: 7

Company: SilverBox Corp IV
Filing Date: 2025-09-04
Form: 425
Chunk 7
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 or are likely to, generate going forward.

None of the Parties or any of their respective representatives gives any assurance that any of SilverBox, Parataxis or Pubco will achieve its expectations. The inclusion of any statement in this communication does not constitute by SilverBox, Parataxis or Pubco or any other person that the events or circumstances described in such statement are material.

<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.

| Date: September 4, 2025 | SILVERBOX CORP IV 
 By:               | /s/ Stephen M. Kadenacy |
|:------------------------|:------------------|:------------------------|
|                         |                   | Stephen M. Kadenacy     |
|                         |                   | Chief Executive Officer |