X0609 4 2026-03-31 0 0002049662 Cartesian Growth Corp III CGCT 0002049612 CGC III Sponsor LLC false 505 FIFTH AVENUE, 15TH FLOOR NEW YORK NY 10017 0 0 1 0 0001426890 Yu Peter false 505 FIFTH AVENUE, 15TH FLOOR NEW YORK NY 10017 1 1 1 0 Chairman and CEO 0 Class A ordinary shares 2026-03-31 4 P 0 300000 10.2770 A 300000 D Class A ordinary shares 2026-04-01 5 P 0 E 671000 10.299 A 971000 D Class B ordinary shares Class A ordinary shares 6800000 6800000 D Class B ordinary shares Class A ordinary shares 100000 100000 I See footnote 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. Each of Pangaea and Mr. Yu disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein. 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"). 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. /s/ Thomas Martin, Attorney-in-Fact 2026-04-02