Corporate Taxpayer ID (CNPJ/MF): 50.746.577/0001-15 Company Registry (NIRE): 35.300.177.045
Publicly Held Company
COSAN S.A. (B3: CSAN3; NYSE: CSAN) ("Cosan" or "Company"), hereby announces to the holders of the 1st, 2ndand 3rdseries of the 11thIssue of Simple, Unsecured, Non-Convertible, of the Unsecured Debentures of Cosan S.A., issued on November 8, 2024 (Code: CSANC1, CSANB1 and CSANA1), that the payment of interest on the Debentures will take place on January 8, 2026, through Itaú Corretora de Valores S.A. ("Itaucor"), the transfer agent, as shown below.
1stSerie | 2ndSerie | 3rdSerie | |
Unit price | R$ 76.43272400 | R$ 77.63831800 | R$ 80.81055400 |
Number of Debentures | 1,500,000 | 500,000 | 500,000 |
The gross total amount to be paid is R$ 193,873,522.00 (One hundred and ninety-three million, eight hundred and seventy-three thousand, five hundred and twenty-two reais).
The Company's Management, through the Investor Relations department, is available to
debenture holders, shareholders, and the market for further information.
São Paulo, January 7, 2026.
Rafael BergmanChief Financial and Investor Relations Officer