Maria Rita de Carvalho Drummond - 18 Mar 2026 Form 3 Insider Report for Cosan S.A. (CSAN)

Role: Chief Legal Officer
Signature: /s/ Maria Rita de Carvalho Drummond
Issuer symbol: CSAN
Transactions as of: 18 Mar 2026
Net transactions value: $0
Form type: 3
Filing time: 18 Mar 2026, 19:19:12 UTC
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Drummond Maria Rita de Carvalho	Chief Legal Officer	AV. BRIGADEIRO FARIA LIMA, 4100, SAO PAULO, BRAZIL	/s/ Maria Rita de Carvalho Drummond	18 Mar 2026	0002120444

Transactions Table

Type	Sym	Class	Shares After	Date	Ownership	Footnotes
holding	CSAN	COMMON STOCK (BVMF: CSAN3)	1,678,151	18 Mar 2026	Direct
holding	CSAN	ADS CSAN	672,888	18 Mar 2026	Direct	F1
holding	CSAN	LONG TERM INCENTIVE (BVMF: CSAN3)	690,076	18 Mar 2026	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each American Depositary Shares represents four shares of Common Stock;
F2	Right to receive shares resulting from Long-Term Incentive Programs - The Program designates eligible individuals of the Cosan Group who are granted shares, subject to continued service with the Group for a specified period (vesting), and which may also be linked to the achievement of certain performance targets. As of this date, the amount reported represents the number of shares granted to the reporting person. Such amount may increase or decrease as of the actual delivery date, depending on the level of achievement of the applicable targets and the applicable tax effects.

Content

Each American Depositary Shares represents four shares of Common Stock;

Right to receive shares resulting from Long-Term Incentive Programs - The Program designates eligible individuals of the Cosan Group who are granted shares, subject to continued service with the Group for a specified period (vesting), and which may also be linked to the achievement of certain performance targets. As of this date, the amount reported represents the number of shares granted to the reporting person. Such amount may increase or decrease as of the actual delivery date, depending on the level of achievement of the applicable targets and the applicable tax effects.