Cosan has acquired a stake of approximately 4.90% of the total common shares issued by Vale

MATERIAL FACT

Cosan S.A. (B3: CSAN3; NYSE: CSAN) ("Cosan" or "Company"), in compliance with the provisions of CVM Resolution No. 44 of August 23, 2021, informs its shareholders and the market in general that, through a subsidiary and a combination of direct investments (equity) and derivative operations, it has acquired a stake corresponding to approximately 4.90% of the total common shares (ex treasury) issued by Vale S.A. ("Vale").

The Company also informs that it intends to increase its interest above the percentage already acquired and will immediately seek approval from the Administrative Council for Economic Defense (CADE). Until CADE's decision, the Company will be exposed to an additional and exclusively financial position of 1.6% of Vale's equity through a derivative transaction that is different from the one used for the acquisition, which might be converted into direct acquisition with CADE’s approval.

This move is another step in the Company's portfolio diversification journey, investing in irreplicable assets in sectors that Brazil has a clear competitive advantage.

The operation was financed by a combination of credit lines, including the private issuance of commercial notes, and financing related to derivative instruments.

Cosan will host today at 7:00 p.m. (Brazilian Time) a public conference call with the market to present the transaction. Participants in the conference call must register through the link available on the Company's investor relations website (or click here).

Cosan will keep its shareholders and the market duly informed of any new information regarding the matter dealt with in this Material Fact.

São Paulo, October 07, 2022.

Ricardo Lewin 
 Chief Financial Officer and Investor Relations Officer

Cosan S.A. – Investor Relations   
 Ana Luísa Perina –  IR Manager
 Paula Macedo – IR Coordinator
 Camila Amorim – IR Coordinator 

Phone +55 11 3897-9797   |    ri@cosan.com    |   cosan.com.br/en/