Company: CCIXW
Filing Date: 2025-12-05
Form Type: S-4/A
Source: 0001193125-25-309933
Chunk: 1125

Company: Churchill Capital Corp IX/Cayman
Filing Date: 2025-12-05
Form: S-4/A
Chunk 1125
---
 this Plan in accordance with the provisions of Section 7.

No Effect on Future Participation . A Participant’s withdrawal from an Offering Period will not have any effect upon his or her eligibility to participate in any similar plan that may hereafter be adopted by the Company or in succeeding Offering Periods that commence after the termination of the Offering Period from which the Participant withdraws.

Termination of Employment . Upon a Participant’s ceasing to be an Eligible Employee, for any reason, he or she will be deemed to have elected to withdraw from this Plan and the Contributions credited to such Participant’s account during the Offering Period but not yet used to purchase shares of Common Stock under this Plan will be returned to such Participant, or, in the case of his or her death, to the person or persons entitled thereto, and such Participant’s option will be automatically terminated. Unless determined otherwise by the Administrator in a manner that, with respect to an Offering under the 423 Component, is permitted by, and compliant with, Code Section 423 , a Participant whose employment transfers between entities through a termination with an immediate rehire (with no break in service) by the Company or a Designated Company will not be treated as terminated under this Plan; however, if a Participant transfers from an Offering under the 423 Component to the Non‑423 Component, the exercise of the option will be qualified under the 423 Component only to the extent it complies with Code Section 423 ; further, no Participant will be deemed to switch from an Offering under the Non‑423 Component to an Offering under the 423 Component or vice versa unless (and then only to the extent) such switch would not cause the 423 Component or any option thereunder to fail to comply with Code Section 423 .

Section 409A . This Plan is intended to be exempt from the application of Section 409A , and, to the extent not exempt, is intended to comply with Section 409A and any ambiguities herein will be interpreted to be exempt from, or comply with, Section 409A . In furtherance of the foregoing and notwithstanding any provision in this Plan to the contrary, if the Administrator determines that an option granted under this Plan may be subject to Section 409A or that any provision in this Plan would cause an option under this Plan to be subject to Section 409A , the Administrator may amend the terms of this Plan and/or of an outstanding option granted under this Plan, or take

<div align='center'>E-10</div>

such other action