[Form 4] Churchill Capital Corp X Unit Insider Trading Activity

Rhea-AI Filing Summary

Churchill Capital Corp X (CCCXU) filed a Form 4 disclosing that its sponsor, Churchill Sponsor X LLC, purchased 300,000 Class A ordinary shares on 05/15/2025 at $10.00 per share. The $3.0 million insider buy was executed via private-placement units and raises the sponsor’s direct holdings to 300,000 shares. Michael Klein, the issuer’s CEO and director, may be deemed an indirect beneficial owner through his control of the sponsor but disclaims beneficial ownership beyond any pecuniary interest.

Key details:

• Transaction code: P (purchase)
• Ownership: Direct; filer is a 10 % owner
• Total consideration: ≈ $3 million
• Form filed by: One reporting person

The buy signals additional capital commitment from the sponsor ahead of any potential de-SPAC transaction.

Positive

• $3.0 million insider purchase (300,000 Class A shares at $10) increases sponsor’s stake and indicates confidence

Negative

• None.

Insights

Insider Trading Analyst

TL;DR: $3 M sponsor purchase aligns interests and suggests confidence.

The sponsor added 300,000 shares at $10, spending $3 million—material for a pre-deal SPAC. As a 10 % owner, increasing exposure tightens float and shows willingness to keep skin in the game until a business combination is struck. Because these units were privately placed, they are subject to typical lock-ups, reducing near-term selling pressure. The move marginally de-risks the vehicle for public holders and is therefore tactically positive.

Governance Specialist

TL;DR: Routine sponsor top-up; governance unchanged, modest positive bias.

Sponsor purchases of private-placement units are common to satisfy working-capital and escrow requirements. Control remains firmly with Michael Klein; no new board or charter provisions were introduced. Warrants embedded in the units could be dilutive post-merger, tempering enthusiasm. Nonetheless, additional capital at sponsor risk reinforces alignment with public shareholders, so the net effect is mildly favorable but not transformative.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Churchill Sponsor X LLC

(Last) (First) (Middle)

640 FIFTH AVENUE, 14TH FLOOR

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Churchill Capital Corp X/Cayman [ CCCXU ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Ordinary Shares	05/15/2025	05/15/2025	P		300,000(1)	A	$10	300,000(1)	D(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares underlying the private placement units (each unit consisting of one Class A ordinary share and one-quarter of one warrant, each whole warrant exercisable to purchase one Class A ordinary share) directly held by Churchill Sponsor X LLC (the "Sponsor") and which were acquired pursuant to a Private Placement Units Purchase Agreement by and between the Sponsor and Churchill Capital Corp X (the "Issuer").

2. Michael Klein, the Chief Executive Officer, President and a director of the Issuer, is the controlling shareholder 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.

	Churchill Sponsor X LLC, By: M. Klein Associates, Inc., its manager, By: /s/ Jay Taragin, Name: Jay Taragin, Title: Authorized Person	06/27/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

How many CCCXU shares did Churchill Sponsor X LLC purchase on 05/15/2025?

The Form 4 reports an acquisition of 300,000 Class A ordinary shares.

What price was paid for the newly acquired CCCXU shares?

Each share was bought at $10.00, representing a total consideration of approximately $3 million.

What is Churchill Sponsor X LLC’s total ownership in CCCXU after the transaction?

Following the purchase, the sponsor directly holds 300,000 Class A shares.

Does Michael Klein have beneficial ownership of the purchased CCCXU shares?

Michael Klein may be deemed an indirect beneficial owner through control of the sponsor but disclaims beneficial ownership beyond any pecuniary interest.

Was the transaction executed under a Rule 10b5-1 trading plan?

The filing does not indicate that the purchase was made pursuant to a Rule 10b5-1 plan.