Cosan CFO reports 438,932-share incentive stake

Cosan S.A.’s chief finance officer reports 438,932 long-term incentive shares on an initial Form 3, subject to vesting and performance conditions.

Rhea-AI Filing Summary

Cosan S.A. (CSAN) reported the initial beneficial holdings of Chief Finance Officer Jose Cezario Menezes de Barros Sobrinho on a Form 3. He holds a right under a Long-Term Incentive Program covering 438,932 shares, reported as granted to him and held directly.

These rights are subject to continued service (vesting) with the Cosan Group and may also depend on achieving specified performance targets. The ultimate number of shares delivered can increase or decrease at delivery based on target achievement and applicable tax effects. No buy or sell transaction is reported.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Menezes de Barros Sobrinho Jose Cezario

Role Chief Finance Officer

Type	Security	Shares	Price	Value
holding	LONG TERM INCENTIVE (BVMF: CSAN3) F1	--	--	--

Holdings After Transaction: LONG TERM INCENTIVE (BVMF: CSAN3) — 438,932 shares (Direct)

Footnotes (1)

1. F1. 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 Cosan 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.

Key Figures

Long-Term Incentive granted shares: 438,932 shares Transaction date reference: September 9, 2026 Reporting person role: Chief Finance Officer

3 metrics

Long-Term Incentive granted shares 438,932 shares Number of shares granted to the reporting person under Cosan’s Long-Term Incentive Programs, held directly

Transaction date reference September 9, 2026 Date associated with the Long-Term Incentive holding entry in the Form 3

Reporting person role Chief Finance Officer Officer title of Jose Cezario Menezes de Barros Sobrinho at Cosan S.A.

Key Terms

Long-Term Incentive Programs, vesting, performance targets, tax effects

4 terms

Long-Term Incentive Programs financial

"Right to receive shares resulting from Long-Term Incentive Programs - The Program"

vesting financial

"granted shares, subject to continued service with the Cosan Group for a specified period (vesting)"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

performance targets financial

"which may also be linked to the achievement of certain performance targets"

tax effects financial

"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"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider position is reported in Cosan S.A. (CSAN)’s latest Form 3?

The Form 3 reports that Cosan S.A.’s Chief Finance Officer, Jose Cezario Menezes de Barros Sobrinho, holds a right under a Long-Term Incentive Program covering 438,932 granted shares, subject to vesting and performance conditions, held as a direct ownership position.

How many incentive shares does the Cosan S.A. (CSAN) CFO report holding?

The CFO reports a Long-Term Incentive position representing 438,932 shares as of the reporting date. This figure reflects the number of shares granted and may change at actual delivery depending on performance target achievement and applicable tax effects.

What type of security is disclosed in the Cosan S.A. (CSAN) Form 3?

The security disclosed is a Long-Term Incentive linked to Cosan shares (BVMF: CSAN3). It represents a right to receive shares under Cosan’s Long-Term Incentive Programs, rather than currently issued and freely tradable common shares.

What conditions apply to the Cosan S.A. (CSAN) CFO’s long-term incentive shares?

The Long-Term Incentive shares are subject to continued service (vesting) with the Cosan Group and may be tied to achieving specified performance targets. The final number of shares delivered can increase or decrease, also reflecting applicable tax effects at delivery.

Does the Cosan S.A. (CSAN) Form 3 report any insider share purchases or sales?

No. The Form 3 reports a holding entry for a Long-Term Incentive Program position. It does not report any purchase, sale, exercise, or disposition transaction; it simply states the number of granted shares associated with the incentive program.

Is the Cosan S.A. (CSAN) long-term incentive holding under a Rule 10b5-1 plan?

The disclosure describes a Long-Term Incentive Program with vesting and performance conditions but does not state that the holding or grants were made pursuant to a Rule 10b5-1 trading plan. No Rule 10b5-1 plan is reported in the filing or its footnotes.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/10/2026 - 04:36 PM Accepted by SEC EDGAR 09/10/2026 - 04:35 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Menezes de Barros Sobrinho Jose Cezario

(Last) (First) (Middle)

AV. BRIGADEIRO FARIA LIMA, 4,100

16TH FLOOR

(Street)

SAO PAULO SAO PAULO 04538-132

(City) (State) (Zip)

BRAZIL

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
09/09/2026

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)

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

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)
LONG TERM INCENTIVE (BVMF: CSAN3)(1)	438,932	D

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:

1. 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 Cosan 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.

	/s/ Jose Cezario Menezes de Barros Sobrinho	09/10/2026
	** 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)