Company: RENEF
Filing Date: 2025-10-17
Form Type: DEFA14A
Source: 0001104659-25-100211
Chunk: 0

Company: Cartesian Growth Corp II
Filing Date: 2025-10-17
Form: DEFA14A
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): October 16, 2025

Cartesian Growth Corporation II

(Exact name of registrant as specified in its charter)</div>

| Cayman Islands               | 001-41378   | N/A                |
| (State or other jurisdiction 
 of incorporation)            | -Commission 
 File Number | -I.R.S. Employer   
 Identification No. |

| 505 Fifth Avenue, 15th Floor             
 New York, New York                       |     10017 |
| (Address of principal executive offices) | -Zip Code |

<div align='center'>(212) 461-6363

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)</div>

Check the appropriate box below if the Form 8-K
filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

| ¨ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |

| x | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |

| ¨ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |

| ¨ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |

Securities registered pursuant to Section 12(b) of the
Act: None.

Indicate by check mark whether the registrant is an emerging growth
company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities
Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company x

If an emerging growth company, indicate by check mark if the registrant
has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant
to Section 13(a