[SCHEDULE 13G] Cartesian Growth Corporation III Unit SEC Filing

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Cartesian Growth Corp III

(Name of Issuer)

Class A ordinary shares, par value $0.0001 per share

(Title of Class of Securities)

G19307100

(CUSIP Number)

06/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. G19307100

1

Names of Reporting Persons

CGC III Sponsor LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 6,900,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 6,900,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,900,000.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

20 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP No. G19307100

1

Names of Reporting Persons

Pangaea Three-B, LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 6,900,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 6,900,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,900,000.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

20 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP No. G19307100

1

Names of Reporting Persons

Peter Yu

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 6,900,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 6,900,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,900,000.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

20 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Cartesian Growth Corp III
(b)	Address of issuer's principal executive offices: 505 Fifth Avenue, 15th Floor, New York, New York 10017
Item 2.
(a)	Name of person filing: This statement is filed on behalf of each of the following persons (collectively, the "Reporting Persons"): (i) CGC III Sponsor LLC (ii) Pangaea Three-B, LP (iii) Peter Yu
(b)	Address or principal business office or, if none, residence: The principal business address of each of the Reporting Persons is 505 Fifth Avenue, 15th Floor, New York, NY 10017.
(c)	Citizenship: CGC III Sponsor LLC is a Cayman Islands limited liability company, Pangaea Three-B, LP is a Cayman Islands limited partnership and Peter Yu is a citizen of the United States of America.
(d)	Title of class of securities: Class A ordinary shares, par value $0.0001 per share
(e)	CUSIP No.: G19307100
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 6,900,000
(b)	Percent of class: 20%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 6,900,000
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 6,900,000
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.	Certifications:
	Not Applicable

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

CGC III Sponsor LLC

Signature:	/s/ Peter Yu
Name/Title:	Peter Yu/President and Manager
Date:	08/05/2025

Pangaea Three-B, LP

Signature:	/s/ Peter Yu
Name/Title:	Peter Yu/Managing Member, By: Pangaea Three GP, LP Its: General Partner, By: Pangaea Three Global GP, LLC Its: General Partner
Date:	08/05/2025

Peter Yu

Signature:	/s/ Peter Yu
Name/Title:	Peter Yu
Date:	08/05/2025

Exhibit Information

Exhibit 1 - Joint Filing Agreement