# EDGAR Filing Document

**Accession Number:** 0001430162
**File Stem:** 0001554855-26-000049
**Filing Date:** 2026-2
**Character Count:** 3552
**Document Hash:** d960da2774a5b5ac744a2a31ddc0322e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001554855-26-000049.hdr.sgml**: 20260202

**ACCESSION NUMBER**: 0001554855-26-000049

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260202

**FILED AS OF DATE**: 20260202

**DATE AS OF CHANGE**: 20260202

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Cosan S.A.
- **CENTRAL INDEX KEY:** 0001430162
- **STANDARD INDUSTRIAL CLASSIFICATION:** RETAIL-AUTO DEALERS & GASOLINE STATIONS [5500]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** D5
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40155
- **FILM NUMBER:** 26588562

**BUSINESS ADDRESS:**
- **STREET 1:** AV. BRIGADEIRO FARIA LIMA
- **STREET 2:** 4100, 16TH FLOOR
- **CITY:** SAO PAULO, SP
- **STATE:** D5
- **ZIP:** 04538-132
- **BUSINESS PHONE:** 55-11-3897-9797

**MAIL ADDRESS:**
- **STREET 1:** AV. BRIGADEIRO FARIA LIMA
- **STREET 2:** 4100, 16TH FLOOR
- **CITY:** SAO PAULO, SP
- **STATE:** D5
- **ZIP:** 04538-132

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Cosan S.A. Industria e Comercio
- **DATE OF NAME CHANGE:** 20080319

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

FORM 6-K

**REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16<br>OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934**

For the month of February 2026

**Commission File Number: 001-40155**<br>

**Cosan S.A.**

(Exact name of registrant as specified in its charter)

**N/A**

(Translation of registrant's name into English)

**Av. Brigadeiro Faria Lima, 4100, – 16**th **floor**<br>São Paulo, SP 04538-132 Brazil<br>(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F X Form 40-F  

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**COSAN S.A.**

*Publicly Held Company*

CNPJ/ME No. 50.746.577/0001-15

NIRE 35.300.177.045 \| CVM Code 01983-6

**NOTICE TO THE MARKET**

**COSAN S.A. (B3: CSAN3; NYSE: CSAN)** ("<u>Cosan</u>" or "<u>Company</u>"), further to the Notice to the Market disclosed on January 16, 2026, advances another step in its liability management process, as provided for in the documentation of the public offerings carried out in 2025, focused on reducing indebtedness and financial costs, and also improving its capital structure.

In this context, its wholly owned subsidiary, Cosan Luxembourg S.A., is fully redeeming the senior notes due June 2030 ("Bond 2030") and the senior notes due January 2031 ("Bond 2031"), with the principal amount of Bond 2030 totaling US$269,334,000.00 and Bond 2031 totaling US$300,000,000.00.

With this redemption, Cosan has communicated total debt repayment of approximately R$6.2 billion to the date and will keep its shareholders and the market in general informed about the next steps of this process.

São Paulo, February 02, 2026

**Rafael Bergman**<br>Chief Financial and Investor Relations Officer

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**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: February 02, 2026

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| | |
|:---|:---|
| &nbsp;&nbsp; COSAN S.A. | &nbsp;&nbsp; COSAN S.A. |
| &nbsp;&nbsp; By: | /s/ Rafael Bergman |
|  | Name:Rafael Bergman |
|  | Title:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Chief Financial Officer |

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