Company: CCIXW
Filing Date: 2025-12-05
Form Type: S-4/A
Source: 0001193125-25-309933
Chunk: 1023

Company: Churchill Capital Corp IX/Cayman
Filing Date: 2025-12-05
Form: S-4/A
Chunk 1023
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 in or relating to this Joinder or any document to be signed in connection with this Joinder shall be deemed to include electronic signatures, deliveries or the keeping of records in electronic form, each of which shall be of the same legal effect, validity or enforceability as a manually executed signature, physical delivery thereof or the use of a paper-based recordkeeping system, as the case may be, and the parties hereto consent to conduct the transactions contemplated hereunder by electronic means.

IN WITNESS WHEREOF, this Joinder has been duly executed and delivered by the parties as of the date first above written.

| TRANSFEROR: |        |
| [____]      |        |
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| Name:       | [____] |
| Title:      | [____] |

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| Mailing Address: |

| TRANSFEREE: |        |
| [____]      |        |
| By:         |        |
| Name:       | [____] |
| Title:      | [____] |

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| Mailing Address: |

<div align='center'>Signature Page to Joinder to Amended and Restated Registration Rights Agreement

AMENDMENT NO. 1 TOTHEAGREEMENT AND PLAN OF MERGER AND REORGANIZATION</div>

This AMENDMENT NO. 1 TO THE AGREEMENT AND PLAN OF MERGER AND REORGANIZATION (this “Amendment”), dated as of September 8, 2025, is made by and among Churchill Capital Corp IX, a Cayman Islands exempted company (the “SPAC”), AL Merger Sub I, Inc., a Delaware corporation and direct, wholly owned subsidiary of SPAC (“Merger Sub I”), AL Merger Sub II, LLC, a Delaware limited liability company and a direct, wholly-owned subsidiary of SPAC (“Merger Sub II”), and Plus Automation, Inc., a Delaware corporation (the “Company”).

WHEREAS, the SPAC, the Company, Merger Sub I and Merger Sub II entered into that certain Agreement and Plan of Merger and Reorganization, dated as of June 5, 2025 (the “Merger Agreement”);

WHEREAS, the SPAC, the Company, Merger Sub I and Merger Sub II wish to amend the Merger Agreement pursuant to Section 12.10 of the Merger Agreement in the manner set forth herein;

WHEREAS, the respective Boards of Directors of the SPAC, the