Churchill Sponsor X LLC - May 13, 2025 Form 3 Insider Report for Churchill Capital Corp X/Cayman (CCCXU)

Role: 10%+ Owner
Signature: /s/ Churchill Sponsor X LLC, By: M. Klein Associates, Inc., its manager, By: /s/ Jay Taragin, Name: Jay Taragin, Title: Authorized Person
Stock symbol: CCCXU
Transactions as of: May 13, 2025
Transactions value $: $0
Form type: 3
Date filed: 6/27/2025, 04:05 PM
Next filing: Jun 27, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Churchill Sponsor X LLC	10%+ Owner	640 FIFTH AVENUE, 14TH FLOOR, NEW YORK	/s/ Churchill Sponsor X LLC, By: M. Klein Associates, Inc., its manager, By: /s/ Jay Taragin, Name: Jay Taragin, Title: Authorized Person	2025-06-27	0001848787

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	CCCXU	Class B Ordinary Shares, par value $0.0001 per share							May 13, 2025	Class A Ordinary Shares, par value $0.0001 per share	10.4M		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The reported shares of Churchill Capital Corp X (the "Issuer") are directly held by Churchill Sponsor X LLC (the "Sponsor") and include 10,350,000 Class B ordinary shares. Pursuant to the Issuer's Amended and Restated Memorandum and Articles of Association, the Class B ordinary shares will automatically convert into Class A ordinary shares, par value $0.0001 per share, of the Issuer at the time of the Issuer's initial business combination on a one-for-one basis, or at any time prior to the Issuer's initial business combination, at the option of the holder, subject to adjustment as described under the heading "Description of Securities--Founder Shares" in the Issuer's registration statement on Form S-1 (File No. 333-286799).
F2	Michael Klein is the controlling stockholder of M. Klein Associates, Inc., which is the managing member of the Sponsor, and has voting and investment discretion with respect to the securities held by the Sponsor. As such, Mr. Klein may be deemed to possess beneficial ownership of the securities held directly by the Sponsor. Mr. Klein disclaims any beneficial ownership of the reported securities other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

Content

The reported shares of Churchill Capital Corp X (the "Issuer") are directly held by Churchill Sponsor X LLC (the "Sponsor") and include 10,350,000 Class B ordinary shares. Pursuant to the Issuer's Amended and Restated Memorandum and Articles of Association, the Class B ordinary shares will automatically convert into Class A ordinary shares, par value $0.0001 per share, of the Issuer at the time of the Issuer's initial business combination on a one-for-one basis, or at any time prior to the Issuer's initial business combination, at the option of the holder, subject to adjustment as described under the heading "Description of Securities--Founder Shares" in the Issuer's registration statement on Form S-1 (File No. 333-286799).

Michael Klein is the controlling stockholder of M. Klein Associates, Inc., which is the managing member of the Sponsor, and has voting and investment discretion with respect to the securities held by the Sponsor. As such, Mr. Klein may be deemed to possess beneficial ownership of the securities held directly by the Sponsor. Mr. Klein disclaims any beneficial ownership of the reported securities other than to the extent of any pecuniary interest he may have therein, directly or indirectly.