NOTICE TO THE MARKET

Cosan S.A. (B3: CSAN3; NYSE: CSAN) ("Cosan" or "Company")informs itsshareholders and the market in general that, on the date hereof, it filed its annual report on Form 20-F for the fiscal year ended December 31, 2022,with the U.S. Securities and Exchange Commission (SEC).

The Form 20-F is available on the SEC website (www.sec.gov) and on the Company's website (https://www.cosan.com.br/en/cvm-and-sec-publications/registration-reference-and-20-f-form/).

Cosan's shareholders may receive a hard copy of the 20-F, which contains the Company's complete audited financial statements, free of charge. Requests should be directed to:

Investor Relations, Cosan S.A.

Av. Brigadeiro Faria Lima, 4,100 - 15th floor

São Paulo, SP 04538-132 Brazil

+55 (11) 3897-9797

ri@cosan.com

São Paulo, April24, 2023

Ricardo Lewin

Chief Financial and Investor Relations Officer

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Cosan SA published this content on 24 April 2023 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 24 April 2023 12:46:04 UTC.