Supplemental Prospectus (Form 424B3)

Filed Pursuant to Rule 424(b)(3)

Registration No. 333-268335

Prospectus Supplement No. 23

to Prospectus dated February 3, 2023

CHILEAN COBALT CORP.

39,000,000 Shares of Common Stock

$1.33 per Share

This prospectus supplement No. 23 amends and supplements the prospectus dated February 3, 2023, which forms a part of our Registration Statement on Form S-1 (Registration Statement No. 333-268335) (the "Registration Statement") and prospectus supplement No. 1 filed on March 24, 2023, prospectus supplement No. 2 filed on May 8, 2023, prospectus supplement No. 3 filed on May 15, 2023, prospectus supplement No. 4 filed on July 6, 2023, prospectus supplement No. 5 filed on July 12, 2023, prospectus supplement No. 6 filed on August 14, 2023, prospectus supplement No. 7 filed on September 27, 2023, prospectus supplement No. 8 filed on November 9, 2023, prospectus supplement No. 9 filed on February 7, 2024, prospectus supplement No. 10 filed on April 1, 2024, prospectus supplement No. 11 filed on May 8, 2024, prospectus supplement No. 12 filed on May 20, 2024, prospectus supplement No. 13 filed on June 14, 2024, prospectus supplement No. 14 filed on August 19, 2024, prospectus supplement No. 15 filed on November 14, 2024, prospectus supplement No. 16 filed on January 3, 2025, prospectus supplement No. 17 filed on February 27, 2025, prospectus supplement No. 18 filed on April 2, 2025, prospectus supplement No. 19 filed on May 15, 2025, prospectus supplement No. 20 filed on July 24, 2025, prospectus supplement No. 21 filed on July 29, 2025 and prospectus supplement No. 22 filed on August 14, 2025 (collectively, the "Supplements") relating to the resale of up to 39,000,000 shares of common stock of Chilean Cobalt Corp. (the "Company," "C3," "we," "our" and "us") by the selling stockholders named in the prospectus. The foregoing prospectus, the Supplements and this prospectus supplement No. 23 are collectively referred to as the "prospectus." Please keep this prospectus supplement with your prospectus for future reference.

This prospectus supplement incorporates into the prospectus the attached Current Report on Form 8-K filed, with the Securities and Exchange Commission ("SEC") on September 3, 2025.

This prospectus supplement is not complete without the prospectus, including any supplements and amendments thereto. This prospectus supplement should be read in conjunction with the prospectus which is to be delivered with this prospectus supplement. This prospectus supplement is qualified by reference to the prospectus, except to the extent that the information in this prospectus supplement updates or supersedes the information contained in the prospectus, including any supplements and amendments thereto.

Investing in our common stock should be considered speculative and involves a high degree of risk, including the risk of losing your entire investment. See "Risk Factors" section of the prospectus to read about the risks you should consider before buying shares of our common stock.

Neither the SEC nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

Capitalized terms contained in this prospectus supplement have the same meanings as in the prospectus unless otherwise stated herein.

The date of this prospectus supplement is September 3, 2025

Index of SEC Filings

The following report listed below is filed as a part of this prospectus supplement No. 23.

Appendix No.		Description
Appendix 1		Current Report on Form 8-K, filed with the Securities and Exchange Commission on September 3, 2025.

G1 to insert "as filed" September 3, 2025 8-K here