Initial Statement of Beneficial Ownership (Form 3)

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Klein Michael Stuart 2. Date of Event Requiring Statement (Month/Day/Year) 07/30/2026 3. Issuer Name and Ticker or Trading Symbol Churchill Capital Corp XIII [XIIIU] (Last) (First) (Middle) 640 FIFTH AVENUE, 14TH FLOOR 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner __X__ Officer (give title below) _____ Other (specify below) See Remarks 5. If Amendment, Date Original Filed (Month/Day/Year) (Street) NEW YORK, NY 10019 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Class B Ordinary Shares, par value $0.0001 per share	(1)	(1)	Class A Ordinary Shares, par value $0.0001 per share	13,800,000	(1)	I	See Footnotes(1)(2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Klein Michael Stuart 640 FIFTH AVENUE, 14TH FLOOR NEW YORK, NY 10019	X	X	See Remarks
CHURCHILL SPONSOR XIII LLC 640 FIFTH AVENUE, 14TH FLOOR NEW YORK, NY 10019		X
M. Klein Associates, Inc. 640 FIFTH AVENUE, 14TH FLOOR NEW YORK, NY 10019		X

Signatures

/s/ Michael Klein		07/30/2026
**Signature of Reporting Person		Date
M. Klein Associates, Inc., By: /s/ Lee Jay Taragin, Name: Lee Jay Taragin, Title: Authorized Person		07/30/2026
**Signature of Reporting Person		Date
Churchill Sponsor XIII LLC, By: M. Klein Associates, Inc., its manager, By: /s/ Lee Jay Taragin, Name: Lee Jay Taragin, Title: Authorized Person:		07/30/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The reported shares of Churchill Capital Corp XIII (the "Issuer") are directly held by Churchill Sponsor XIII LLC (the "Sponsor") and include up to 1,800,000 Class B ordinary shares that are subject to forfeiture if the underwriters of the Issuer's initial public offering do not exercise in full an option granted to them to cover over-allotments. Pursuant to the Issuer's Amended and Restated Memorandum And Articles of Association, the Class B ordinary shares will automatically convert into the 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. 333-297472). The Class B ordinary shares have no expiration date.
(2)	Michael Klein is the controlling stockholder of M. Klein Associates, Inc., which is the managing member of the Sponsor.
Remarks: Chief Executive Officer, President and Chairman of the Board of Directors

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