Company: CCIXW
Filing Date: 2025-12-05
Form Type: S-4/A
Source: 0001193125-25-309933
Chunk: 1148

Company: Churchill Capital Corp IX/Cayman
Filing Date: 2025-12-05
Form: S-4/A
Chunk 1148
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. * Filed herewith. ** To be filed by amendment. 

# As permitted by Regulation S-K, Item 601(b)(10)(iv) of the Securities Act of 1934, as amended, certain confidential portions of this exhibit have been redacted from the publicly filed document. The Registrant agrees to furnish a supplemental copy of any omitted schedule or similar attachment to the Securities and Exchange Commission upon its request.
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SIGNATU RES Pursuant to the requirements of the Securities Act of 1933, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized in the City of New York, State of New York, on December 5, 2025.

| CHURCHILL CAPITAL CORP IX |                 |                         |
| By:                       | /s/ Jay Taragin |                         |
|                           | Name:           | Jay Taragin             |
|                           | Title:          | Chief Financial Officer |

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

| Signature         
 /s/ Michael Klein |     | Title                                                                      
 Chief Executive Officer, President, and Chairman of the Board of Directors 
 (Principal Executive Officer)                                              |     | Date             
 December 5, 2025 |
|:------------------|:----|:---------------------------------------------------------------------------|:----|:-----------------|
| Michael Klein     |     |                                                                            |     |                  |
| /s/ Jay Taragin   |     | Chief Financial Officer                                                    
 (Principal Financial and Accounting Officer)                               |     | December 5, 2025 |
| Jay Taragin       |     |                                                                            |     |                  |
| *                 |     | Director                                                                   |     | December 5, 2025 |
| Stephen Murphy    |     |                                                                            |     |                  |
| *                 |     | Director                                                                   |     | December 5, 2025 |
| William Sherman   |     |                                                                            |     |                  |
| *                 |     | Director                                                                   |     | December 5, 2025 |
| Paul D. Lapping   |     |                                                                            |     |                  |

*By: /s/ Jay Taragin Jay Taragin Attorney-in-Fact

<div align='center'>411</div>

SIGNATURES Pursuant to the requirements of the Securities