Cosan S.A. (NYSE: CSAN) director submits initial Form 3 with no trades

Rhea-AI Filing Summary

Cosan S.A. director Rapparini Soares Luis Claudio filed an initial insider ownership report on Form 3. The provided data show no reported transactions, no derivative positions, and no exercise, gift, tax-withholding, or restructuring events associated with this filing.

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Rapparini Soares Luis Claudio

(Last) (First) (Middle)

AV. BRIGADEIRO FARIA LIMA, N 4100

(Street)

SAO PAULO SP 04538132

(City) (State) (Zip)

BRAZIL

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Cosan S.A. [ CSAN ]

3a. Foreign Trading Symbol
[CSAN3]

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

No securities are beneficially owned.

	/s/ Luis Claudio Rapparini Soares	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does Cosan S.A. (CSAN) Form 3 for Rapparini Soares Luis Claudio show?

The Form 3 for Rapparini Soares Luis Claudio at Cosan S.A. reports his status as a director. In the provided data, it does not list any transactions, derivative positions, or other ownership changes associated with this initial report.

Are there any share purchases or sales reported in Cosan S.A. (CSAN) Form 3?

No, this Cosan S.A. Form 3 reports no share purchases or sales. The transaction summary shows zero buy, sell, acquire, dispose, or other transactions and a neutral net buy/sell direction for the reporting director.

Does the Cosan S.A. (CSAN) Form 3 disclose derivative securities for the director?

No, the Form 3 data show no derivative securities for the director. The derivative summary is empty and the transaction summary lists zero option or other derivative exercises associated with this initial ownership statement.

What is the role of Rapparini Soares Luis Claudio at Cosan S.A. (CSAN) in this Form 3?

In this Form 3, Rapparini Soares Luis Claudio is identified as a director of Cosan S.A. The filing serves as his initial insider ownership report and does not itself report any transactions or derivative positions in the provided data.

Does this Cosan S.A. (CSAN) Form 3 indicate any gifts or tax-withholding share movements?

No, the Form 3 indicates no gifts or tax-withholding events. GiftCount and taxWithholdingCount are both zero, and there are no restructuring entries, suggesting no non-market transfers in this data excerpt.