Cosan S.a.BMFBOVESPA: CSAN3

11/04/2025 - Notice to Debentures Holders - Payment of interest

· Issued by Cosan S.A.
COSAN S.A.

Corporate Taxpayer ID (CNPJ/MF): 50.746.577/0001-15 Company Registry (NIRE): 35.300.177.045

Publicly Held Company CVM 19836

NOTICE TO HOLDERS OF THE 4THISSUE OF SIMPLE, UNSECURED, NON-CONVERTIBLE DEBENTURES OF COSAN S.A.

Cosan S.A. (B3: CSAN3; NYSE: CSAN) ("Cosan" or the "Company"), hereby announces to the holders of the 1stand 2ndseries of the 4thIssue of Simple, Unsecured, Non-Convertible, of the Unsecured Debentures of Cosan S.A., issued on May 05, 2022 (Code: CSAN14 e CSAN24), that the payment of interest on the Debentures will take place on November 05, 2025, through Itaú Corretora de Valores S.A. ("Itaucor"), the transfer agent, as shown below.

1stSeries

2ndSeries

Unit price

400,000

1,100,000

Number of debentures

82.858285

85.074573

The gross total amount to be paid is R$ 126,725,344.30 (One hundred twenty-six million, seven hundred twenty-five thousand, three hundred forty-four Brazilian reais and thirty centavos).

The Company's Management, through the Investor Relations department, is available to

Debenture holders, shareholders and the market for further information.

São Paulo, November 04, 2025.

Rodrigo Araujo Alves

Chief Financial and Investor Relations Officer

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