# EDGAR Filing Document

**Accession Number:** 0002049612
**File Stem:** 0001104659-26-044953
**Filing Date:** 2026-4
**Character Count:** 12694
**Document Hash:** 26000bb4a0ac0f8a47c8e4ba2ef789e0
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-044953.hdr.sgml**: 20260417

**ACCESSION NUMBER**: 0001104659-26-044953

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260415

**FILED AS OF DATE**: 20260417

**DATE AS OF CHANGE**: 20260417

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Yu Peter
- **CENTRAL INDEX KEY:** 0001426890

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42629
- **FILM NUMBER:** 26872470

**MAIL ADDRESS:**
- **STREET 1:** C/O CARTESIAN CAPITAL GROUP
- **STREET 2:** 505 FIFTH AVENUE, 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Pangaea Three-B, LP
- **CENTRAL INDEX KEY:** 0001754782

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42629
- **FILM NUMBER:** 26872469

**BUSINESS ADDRESS:**
- **STREET 1:** C/O CARTESIAN CAPITAL GROUP
- **STREET 2:** 505 FIFTH AVE., 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** 212 461-6363

**MAIL ADDRESS:**
- **STREET 1:** C/O CARTESIAN CAPITAL GROUP
- **STREET 2:** 505 FIFTH AVE., 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** CGC III Sponsor LLC
- **CENTRAL INDEX KEY:** 0002049612

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42629
- **FILM NUMBER:** 26872471

**BUSINESS ADDRESS:**
- **STREET 1:** 505 FIFTH AVENUE, 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** 917-294-1353

**MAIL ADDRESS:**
- **STREET 1:** 505 FIFTH AVENUE, 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Cartesian Growth Corp III
- **CENTRAL INDEX KEY:** 0002049662
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 505 FIFTH AVENUE, 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** 917-294-1353

**MAIL ADDRESS:**
- **STREET 1:** 505 FIFTH AVENUE, 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>CGC III Sponsor LLC<br><sub>(Last) (First) (Middle)</sub><br>505 FIFTH AVENUE, 15TH FLOOR<br><sub>(Street)</sub><br>NEW YORK, NY 10017<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-04-15 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Cartesian Growth Corp III [ CGCT ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Yu Peter<br><sub>(Last) (First) (Middle)</sub><br>505 FIFTH AVENUE, 15TH FLOOR<br><sub>(Street)</sub><br>NEW YORK, NY 10017<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-04-15 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chairman and CEO_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Cartesian Growth Corp III [ CGCT ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Pangaea Three-B, LP<br><sub>(Last) (First) (Middle)</sub><br>505 FIFTH AVENUE, 15TH FLOOR<br><sub>(Street)</sub><br>NEW YORK, NY 10017<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-04-15 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Cartesian Growth Corp III [ CGCT ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Class A ordinary shares | 2026-04-15 |  | P |  | 100000 | A | $10.324 | 1371000 | I | See footnote<sup>(1)</sup> |
| Class A ordinary shares | 2026-04-16 |  | P | V | 100000 | A | $10.327 | 1471000 | I | See footnote<sup>(1)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Class B ordinary shares | <sup>(2)</sup> |  |  |  |  |  |  | <sup>(2)</sup> | <sup>(2)</sup> | Class A ordinary shares | 6800000 |  | 6800000 | D<sup>(3)</sup> |  |
| Class B ordinary shares | <sup>(2)</sup> |  |  |  |  |  |  | <sup>(2)</sup> | <sup>(2)</sup> | Class A ordinary shares | 100000 |  | 100000 | I | See footnote<sup>(3)</sup> |
| Warrants | $11.50 |  |  |  |  |  |  | <sup>(4)</sup> | <sup>(4)</sup> | Class A ordinary shares | 4400000 |  | 4400000 | D<sup>(5)</sup> |  |
| Warrants | $11.50 | 2026-04-15 |  | P |  | 34963 |  | <sup>(4)</sup> | <sup>(4)</sup> | Class A ordinary shares | 34963 | $0.76 | 143498 | I | See footnote<sup>(6)</sup> |
| Warrants | $11.50 | 2026-04-16 |  | P | V | 152100 |  | <sup>(4)</sup> | <sup>(4)</sup> | Class A ordinary shares | 152100 | $0.86 | 295598 | I | See footnote<sup>(6)</sup> |
| Warrants | $11.5 | 2026-04-17 |  | P | V | 28522 |  | <sup>(4)</sup> | <sup>(4)</sup> | Class A ordinary shares | 28522 | $0.90 | 324120 | I | See footnote<sup>(6)</sup> |

---

### Footnotes:

(1) Represents Class A ordinary shares of Cartesian Growth Corporation III (the "Issuer") held directly by Pangaea Three-B, LP ("Pangaea"). Pangaea is controlled by Peter Yu. Consequently, Mr. Yu may be deemed to share voting and dispositive control over the securities held by Pangaea, 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.

(2) The Class B ordinary shares of 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. 333-284565) (the "Registration Statement") related to the Issuer's initial public offering (the "IPO").

(3) Represents 6,800,000 Class B ordinary shares held directly by the Sponsor and 100,000 Class B ordinary shares held directly by CGC III Sponsor DirectorCo LLC ("DirectorCo") (of which 90,000 shares are held by DirectorCo for the benefit of the Issuer's independent directors). The Sponsor is the sole managing member of DirectorCo. Pangaea is the sole member of the Sponsor and is controlled by Peter Yu. Consequently, each of Pangaea and Mr. Yu may be deemed to share voting and dispositive control over the securities held by the Sponsor and DirectorCo, and thus to share beneficial ownership of such securities. Each of Pangaea and Mr. Yu disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein.

(4) Each warrant becomes exercisable on the later of one year after the closing of the Issuer's initial public offering or 30 days after the completion of an initial business combination, as described in the Issuer's prospectus filed with the SEC. The warrants expire five years after the completion of an initial business combination, or earlier upon redemption or liquidation, as described in the Issuer's prospectus filed with the SEC.

(5) Represents 4,400,000 private placement warrants held directly by the Sponsor. Pangaea is the sole member of the Sponsor and is controlled by Peter Yu. Consequently, each of Pangaea and 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. Each of Pangaea and Mr. Yu disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein.

(6) Represents 108,535 warrants held directly by Pangaea. Pangaea is controlled by Peter Yu. Consequently, Mr. Yu may be deemed to share voting and dispositive control over the securities held by Pangaea, and thus to share beneficial ownership of such securities. Mr. Yu disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.

**Signature:** /s/ Thomas Martin, Attorney-in-Fact  
**Date:** 2026-04-17

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**