6-K
Cosan S.A. (CSAN)
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
Report of Foreign Issuer
Pursuant To Rule 13a-16 Or 15d-16 of the
Securities Exchange Act of 1934
For the month of May 2026
Commission File Number: 333-251238
COSAN S.A.
(Exact name of registrant as specified in its charter)
N/A
(Translation of registrant’s name into English)
Av. Brigadeiro Faria Lima, 4100, – 16th floor São Paulo, SP 04538-132 Brazil (Address of principal executive offices)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40‑F:
Form 20-F ☒ Form 40-F ☐
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):
Yes ☐ No ☒
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):
Yes ☐ No ☒
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date: May 15, 2026
| COSAN S.A. | |
|---|---|
| By: | /s/ Rafael Bergman |
| Name: Rafael Bergman | |
| Title: Chief Financial Officer |