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 * CGC IV Sponsor LLC 2. Date of Event Requiring Statement (Month/Day/Year) 06/24/2026 3. Issuer Name and Ticker or Trading Symbol Cartesian Growth Corp IV [CGCF] (Last) (First) (Middle) 505 FIFTH AVENUE, 15TH FLOOR 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed (Month/Day/Year) (Street) NEW YORK, NY 10017 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	(1)	(1)	Class A ordinary shares	7,087,500(2)	(1)	D(3)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
CGC IV Sponsor LLC 505 FIFTH AVENUE, 15TH FLOOR NEW YORK, NY 10017		X
Yu Peter 505 FIFTH AVENUE, 15TH FLOOR NEW YORK, NY 10017	X	X	Chairman and CEO

Signatures

/s/ Yangyang Jia, Attorney-in-Fact		06/24/2026
**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 Class B ordinary shares of Cartesian Growth Corporation IV (the "Issuer") have no expiration date and will automatically convert into Class A ordinary shares concurrently with or immediately following the consummation of the Issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment, as described in the Registration Statement on Form S-1 (File No. 333-296614) (the "Registration Statement") related to the Issuer's initial public offering (the "IPO").
(2)	Includes up to 937,500 shares subject to forfeiture by CGC IV Sponsor LLC (the "Sponsor") depending on the extent to which the IPO underwriters' over-allotment option is exercised, as described in the Registration Statement.
(3)	Represents 7,087,500 shares held directly by the Sponsor. CGC IV Sponsor Manager LLC is the sole member of the Sponsor and is controlled by Peter Yu. Consequently, Mr. Yu may be deemed to share voting and dispositive control over the securities held by the Sponsor, and thus to share beneficial ownership of such securities. Mr. Yu disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein.
Remarks: See Exhibit 24.1 - Power of Attorney (CGC IV Sponsor LLC); See Exhibit 24.3 - Power of Attorney (Peter Yu)

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