Cosan director reports initial CSAN shareholdings

Cosan S.A. director Cordes Burkhard Otto filed an initial ownership report showing his equity stake in the company.

Accepted by SEC EDGAR 04/02/2026 - 12:50 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Cosan S.A. director Cordes Burkhard Otto filed an initial ownership report showing his equity stake in the company. The filing lists direct holdings of 42,332 shares of common stock and 857,610 American Depositary Shares, as well as 1,350,000 common shares held indirectly through DGF UBER ALLES FIM CP IE. This Form 3 does not reflect new buying or selling activity but establishes the director’s ownership position as of the reported date.

Insider Trade Summary

Holdings reported, no transactions

Holdings

Insider Cordes Burkhard Otto

Role Director

Type	Security	Shares	Price	Value
Holding	COMMON STOCK (BVMF: CSAN3)	--	--	--
Holding	ADS CSAN 1	--	--	--
Holding	COMMON STOCK (BVMF: CSAN3)	--	--	--

Holdings: COMMON STOCK (BVMF: CSAN3) — 42,332 shares (Direct); ADS CSAN 1 — 857,610 shares (Direct); COMMON STOCK (BVMF: CSAN3) — 1,350,000 shares (Indirect, DGF UBER ALLES FIM CP IE)

Key Figures

Direct common stock: 42,332 shares Direct ADS holdings: 857,610 ADS Indirect common stock: 1,350,000 shares +2 more

5 metrics

Direct common stock 42,332 shares Direct Cosan common stock holdings as of 2026-03-18

Direct ADS holdings 857,610 ADS Direct Cosan ADS holdings as of 2026-03-18

Indirect common stock 1,350,000 shares Indirect Cosan common stock via DGF UBER ALLES FIM CP IE as of 2026-03-18

Holding entries 3 entries Number of holding lines reported in Form 3

Unknown transaction records 3 records Transactions classified as holdings with unknown transaction code

Key Terms

Form 3, COMMON STOCK (BVMF: CSAN3), ADS, indirect, +1 more

5 terms

Form 3 regulatory

"Cordes Burkhard Otto filed an initial ownership report on Form 3"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

COMMON STOCK (BVMF: CSAN3) financial

"security_title: "COMMON STOCK (BVMF: CSAN3)" listed among holdings"

ADS financial

"security_title: "ADS CSAN 1" indicating American Depositary Shares"

Ads are paid promotional messages a company places across media — online, on TV, in print, or on social platforms — to attract customers, explain products, or shape public perception. For investors, ads matter because they drive sales growth, affect how much a company must spend to win customers, and influence brand strength and long-term value. Ads can also create regulatory or reputational risk if claims are misleading, which can affect profits and stock price.

indirect financial

"ownership_type: "indirect" for shares held via DGF UBER ALLES FIM CP IE"

beneficial ownership financial

"Form 3 serves as an initial statement of beneficial ownership by the insider"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

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

What does the Cosan (CSAN) Form 3 filing by Cordes Burkhard Otto show?

The Form 3 shows Cordes Burkhard Otto’s existing ownership in Cosan. He holds common shares directly and indirectly, plus ADSs, establishing his initial reportable stake as a company director.

How many Cosan (CSAN) common shares does Cordes Burkhard Otto hold directly?

Cordes Burkhard Otto directly holds 42,332 Cosan common shares. This figure reflects his personal direct ownership and is part of the initial position disclosed in the Form 3 filing.

How many Cosan (CSAN) ADSs does Cordes Burkhard Otto report owning?

He reports direct ownership of 857,610 Cosan ADSs. These American Depositary Shares represent an additional listed position separate from his directly held Brazilian common stock in the company.

What indirect Cosan (CSAN) holdings are reported for Cordes Burkhard Otto?

The Form 3 reports 1,350,000 Cosan common shares held indirectly through DGF UBER ALLES FIM CP IE. This reflects an indirect ownership interest associated with the reporting person.

Does the Cosan (CSAN) Form 3 indicate recent insider buying or selling?

The Form 3 lists holdings without buy or sell transaction codes. It serves as an initial ownership statement for the director, rather than documenting recent trading activity in Cosan shares.

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

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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

OMB APPROVAL

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

1. Name and Address of Reporting Person^*

Cordes Burkhard Otto

(Last) (First) (Middle)

AV. BRIGADEIRO FARIA LIMA, 4100

16TH FLOOR

(Street)

SAO PAULO 01546-100

(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)
COMMON STOCK (BVMF: CSAN3)	42,332	D
ADS CSAN 1	857,610	D
COMMON STOCK (BVMF: CSAN3)	1,350,000	I	DGF UBER ALLES FIM CP IE

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:

Remarks:

1. Each American Depositary Share represents four shares of Common Stock.

	/s/ Burkhard Otto Cordes	04/02/2026
	** 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)