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Cosan S.A.

For the period ended May 14, 2026. Filed May 14, 2026.

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About this filing

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May 14, 2026 · Filed May 14, 2026

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1 Operations context

Cosan S.A. ("Cosan" or "the Company") is a publicly held Brazilian corporation listed on the Novo Mercado, the highest corporate governance tier of B3 S.A. — Brasil Bolsa Balcão ("B3"), under the trading symbol "CSAN3." The Company's American Depositary Shares (ADSs) are listed on the New York Stock Exchange (NYSE) under the ticker symbol "CSAN." Cosan is a sociedade anônima incorporated under the laws of Brazil with no fixed term and is headquartered in São Paulo, State of São Paulo. The Company's controlling shareholder is Mr. Rubens Ometto Silveira Mello.

As of March 31, 2026, the Cosan Corporate segment comprised the following entities:

(i)Parent company with direct or indirect equity interest in subsidiaries and joint ventures. The main effects on its profit or loss are general and administrative expenses, contingencies, equity income and financial results attributed to loans.
(ii)Itaú Unibanco S.A. (“Itaú”) holds preferred shares corresponding to a 12.73% stake in Cosan Nove Participações S.A. (“Cosan Nove”), which has a direct 39.06% stake in Raízen S.A. (“Raízen”).
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