CSAN / Cosan S.A. - Depositary Receipt (Common Stock) - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Cosan S.A. - Depositary Receipt (Common Stock)
US ˙ NYSE ˙ US22113B1035

Mga Batayang Estadistika
LEI 222100V5GTJGKUH55655
CIK 1430162
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Cosan S.A. - Depositary Receipt (Common Stock)
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
September 4, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of September 2025 Commission File Number: 333-251238 COSA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of September 2025 Commission File Number: 333-251238 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, – 1

August 15, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2025 Commission File Number: 333-251238 COSAN S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2025 Commission File Number: 333-251238 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, – 16th

August 15, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2025 Commission File Number: 333-251238 COSAN S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2025 Commission File Number: 333-251238 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, – 16th

May 16, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2025 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2025 Commission File Number: 333-251238 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, – 16th fl

May 16, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2025 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2025 Commission File Number: 333-251238 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, – 16th fl

May 1, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2025 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2025 Commission File Number: 333-251238 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, – 16th

April 30, 2025 EX-12.1

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 12.1 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Marcelo Eduardo Martins, certify that: 1.I have reviewed this annual report on Form 20-F of Cosan S.A.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which

April 30, 2025 EX-13.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2024 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

April 30, 2025 EX-12.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 12.2 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Rodrigo Araújo Alves, certify that: 1.I have reviewed this annual report on Form 20-F of Cosan S.A.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which suc

April 30, 2025 EX-2.8

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Description of Common Shares

Exhibit 2.8 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Description of Common Shares General We are a corporation (sociedade anônima) of indefinite term incorporated under the laws of Brazil, having our registered office in the city of São Paulo, state of São Paulo, at Avenida Brigadeiro Faria Lima, 4,100 – 16th floor, room 1,

April 30, 2025 EX-11.2

SECURITIES TRADING POLICY AND INFORMATION DISCLOSURE POLICY Cosan S.A. Approved at the Board of Directors’ Meeting of the Company held on April 20, 2023.

Exhibit 11.2 SECURITIES TRADING POLICY AND INFORMATION DISCLOSURE POLICY OF Cosan S.A. Approved at the Board of Directors’ Meeting of the Company held on April 20, 2023. 1 SECURITIES TRADING POLICY AND INFORMATION DISCLOSURE POLICY TABLE OF CONTENTS 1. INTRODUCTION 3 1.1. OBJECTIVE 3 1.2. DEFINITIONS 3 1.3. APPLICATION 5 2. DISCLOSURE AND TRADING COMMITTEE 6 3. SECURITIES TRADING POLICY 7 3.1. OBJ

April 30, 2025 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT O

April 30, 2025 EX-1.1

CHAPTER I - NAME, HEAD OFFICES, PURPOSE AND TERM CHAPTER V – MANAGEMENT ANCILLARY BODIES CHAPTER VI -FISCAL COUNCIL CHAPTER VIII – TRANSACTIONS WITH SHARES ISSUED BY THE COMPANY CHAPTER IX - LIQUIDATION CHAPTER X – ARBITRATION CHAPTER XI – GENERAL

EXHIBIT 1.1 COSAN S.A. Publicly Held Company Corporate Taxpayer ID (CNPJ): 50.746.577/0001-15 Company Registry (NIRE) 35.300.177.045 | CVM Code 19836 BYLAWS CHAPTER I - NAME, HEAD OFFICES, PURPOSE AND TERM Article 1 - Cosan S.A. (“Company”) is a corporation governed by the provisions of these Bylaws (“Bylaws”) and applicable legal provisions. Paragraph 1 - As the Company was accepted at the Novo M

April 30, 2025 EX-13.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2024 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

April 30, 2025 EX-16.1

Securities and Exchange Commission

EXHIBIT 16.1 April 30, 2025 Securities and Exchange Commission 100 F Street N.E. Washington, DC 20549 United States of America We have been furnished with a copy of the response to item 16-F “Changes In Registrant’s Certifying Accountant” of the Form 20-F with respect to the event that occurred on February 4, 2025, to be filed by our former client, Cosan S.A. We agree with the statements made in r

March 11, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of March 2025 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of March 2025 Commission File Number: 333-251238 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, – 16th

March 11, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of March 2025 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of March 2025 Commission File Number: 333-251238 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, – 16th

February 27, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2025 Commission File Number: 333-251238 COSAN

6-K 1 MainDocument.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2025 Commission File Number: 333-251238 COSAN S.A. (Exact name of registrant as specified in its charter) N/A (Translation of registrant’s name into English) Av. Brigad

February 25, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2025 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2025 Commission File Number: 333-251238 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

February 11, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2025 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2025 Commission File Number: 333-251238 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

February 10, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2025 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2025 Commission File Number: 333-251238 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

January 31, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2025 Commission File Number: 001-40155 COSAN S.A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2025 Commission File Number: 001-40155 COSAN S.

January 30, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2025 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2025 Commission File Number: 333-251238 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, – 16t

January 16, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2025 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2025 Commission File Number: 333-251238 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, – 16t

November 14, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2024 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2024 Commission File Number: 333-251238 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

November 14, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2024 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2024 Commission File Number: 333-251238 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

November 13, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2024 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2024 Commission File Number: 333-251238 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

November 12, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2024 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2024 Commission File Number: 333-251238 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

November 8, 2024 EX-12.1

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 12.1 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Marcelo Eduardo Martins, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under whic

November 8, 2024 EX-15.1

OTC / ICE

EXHIBIT 15.1 Combined consolidated financial statements as of March 31, 2024, and 2023 and for the three years in the period ended March 31, 2024, and Independent auditor’s report 1 Contents Consolidated statements of financial position 7 Combined consolidated statements of income 9 Combined consolidated statements of comprehensive income 10 Consolidated statements of changes in equity 11 Combined

November 8, 2024 EX-11.1

DOING THE RIGHT THING, THE RIGHT WAY. RESPECT, INTEGRITY AND TRANSPARENCY ARE IN THE COSAN GROUP’S DNA. It is everyone’s responsibility to be aware of the policies and procedures that we will explain here. This document must serve as an ongoing refer

EXHIBIT 11.1 DOING THE RIGHT THING, THE RIGHT WAY. RESPECT, INTEGRITY AND TRANSPARENCY ARE IN THE COSAN GROUP’S DNA. It is everyone’s responsibility to be aware of the policies and procedures that we will explain here. This document must serve as an ongoing reference to guide individual and collective actions and decisions, as well as relations with colleagues and Third Parties. Reading and follow

November 8, 2024 EX-13.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2023 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

November 8, 2024 EX-16.1

November 08, 2024

EXHIBIT 16.1 November 08, 2024 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Ladies and Gentlemen: We have read the “Item 16F. Change in Registrant’s Certifying Accountant” of the Annual Report on Form 20-F for the year ended December 31, 2023 of Cosan S.A. and are in agreement with the statements contained therein in relation to Ernst & Young Auditores Independentes S

November 8, 2024 EX-97.1

COSAN S.A. CLAWBACK POLICY Approved by the Company's Board of Directors' on November 16th, 2023.

EXHIBIT 97.1 COSAN S.A. CLAWBACK POLICY Approved by the Company's Board of Directors' on November 16th, 2023. CLAWBACK POLICY The Board of Directors (the “Board”) of Cosan S.A. (the “Company”) has approved on November 16th, 2023 the adoption of this Clawback Policy (“Policy”) which provides for the recoupment of certain executive compensation in the event of an accounting restatement resulting fro

November 8, 2024 EX-2.9

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Description of Common Shares

EXHIBIT 2.9 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Description of Common Shares General We are a corporation (sociedade anônima) of indefinite term incorporated under the laws of Brazil, having our registered office in the city of São Paulo, state of São Paulo, at Avenida Brigadeiro Faria Lima, 4,100 – 16th floor, room 1,

November 8, 2024 EX-2.8

COSAN LUXEMBOURG S.A., as Company, COSAN S.A., as Guarantor, U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, as Trustee, Paying Agent, Registrar and Transfer Agent, Dated as of January 26, 2024 7.250% Senior Notes Due 2031

EXHIBIT 2.8 COSAN LUXEMBOURG S.A., as Company, COSAN S.A., as Guarantor, and U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, as Trustee, Paying Agent, Registrar and Transfer Agent, Indenture Dated as of January 26, 2024 7.250% Senior Notes Due 2031 1 Table of Contents Page Article 1 6 DEFINITIONS AND INCORPORATION BY REFERENCE 6 Section 1.01 Definitions 6 Section 1.02 Rules of Construction 21 Secti

November 8, 2024 EX-15.2

Report of Independent Registered Public Accounting Firm

EXHIBIT 15.2 Contents Report of Independent Registered Public Accounting Firm F-2 Management’s Report on Internal Control over Financial Reporting F-5 Consolidated Income Statement F-6 Consolidated Statement of Comprehensive Income F-7 Consolidated Statement of Cash Flows F-8 Consolidated Statement of Financial Position F-9 Consolidated Statement of Changes in Equity F-11 1. Corporate information

November 8, 2024 EX-13.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2023 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

November 8, 2024 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F ☐REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1

November 8, 2024 EX-2.7

COSAN LUXEMBOURG S.A., as Company, COSAN S.A., as Guarantor, THE BANK OF NEW YORK MELLON, as Trustee, Paying Agent, Registrar and Transfer Agent, Dated as of June 27, 2023 7.500% Senior Notes Due 2030

EXHIBIT 2.7 COSAN LUXEMBOURG S.A., as Company, COSAN S.A., as Guarantor, and THE BANK OF NEW YORK MELLON, as Trustee, Paying Agent, Registrar and Transfer Agent, Indenture Dated as of June 27, 2023 7.500% Senior Notes Due 2030 Table of Content Page Article 1 6 DEFINITIONS AND INCORPORATION BY REFERENCE 6 Section 1.01 Definitions 6 Section 1.02 Rules of Construction 23 Section 1.03 Table of Content

November 8, 2024 EX-12.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 12.2 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Rodrigo Araújo Alves, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which s

November 8, 2024 EX-4.7

Shareholders’ Agreement Raízen S.A. COSAN S.A. Cosan Nove Participações S.A. Shell Brazil Holding B.V. Raízen S.A. as intervening and consenting party

EXHIBIT 4.7 Eighth Amendment to the Shareholders’ Agreement of Raízen S.A. between COSAN S.A. Cosan Nove Participações S.A. AND Shell Brazil Holding B.V. AND Raízen S.A. as intervening and consenting party Dated as of July 27, 2023 By this Eighth Amendment to the Shareholders’ Agreement of Raízen S.A., signed on July 27, 2023: (1)Cosan S.A., a corporation organized and existing according to the la

November 8, 2024 EX-1.1

COSAN S.A. Publicly Held Company Corporate Taxpayer ID (CNPJ): 50.746.577/0001-15 Company Registry (NIRE) 35.300.177.045 | CVM Code 19836 CHAPTER I - NAME, HEAD OFFICES, PURPOSE AND TERM

EXHIBIT 1.1 COSAN S.A. Publicly Held Company Corporate Taxpayer ID (CNPJ): 50.746.577/0001-15 Company Registry (NIRE) 35.300.177.045 | CVM Code 19836 BYLAWS CHAPTER I - NAME, HEAD OFFICES, PURPOSE AND TERM Article 1 - Cosan S.A. (“Company”) is a corporation governed by the provisions of these Bylaws (“Bylaws”) and applicable legal provisions. Paragraph 1 - As the Company was accepted at the Novo M

October 22, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2024 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2024 Commission File Number: 333-251238 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, – 16t

October 10, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2024 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2024 Commission File Number: 333-251238 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, – 16t

October 1, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2024 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2024 Commission File Number: 333-251238 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, – 16t

August 15, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2024 Commission File Number: 333-251238 COSAN S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2024 Commission File Number: 333-251238 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, – 16th

August 15, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2024 Commission File Number: 333-251238 COSAN S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2024 Commission File Number: 333-251238 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, – 16th

May 29, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2024 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2024 Commission File Number: 333-251238 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, – 16th fl

May 29, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2024 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2024 Commission File Number: 333-251238 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, – 16th fl

May 29, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 001-40155 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, 4,100

May 29, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 001-40155 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, 4,100

May 29, 2024 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 001-40155 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, 4,1

April 30, 2024 NT 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING

Commission File Number: 001-40155 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 29, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2024 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2024 Commission File Number: 333-251238 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, – 16th

April 29, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2024 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2024 Commission File Number: 333-251238 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, – 16th

April 26, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2024 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2024 Commission File Number: 333-251238 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, – 16th

April 22, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2024 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2024 Commission File Number: 333-251238 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, – 16th

March 28, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of March 2024 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of March 2024 Commission File Number: 333-251238 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, – 16th

March 26, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of March 2024 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of March 2024 Commission File Number: 333-251238 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, – 16th

February 1, 2024 CORRESP

* * *

Manuel Garciadiaz [email protected] Davis Polk & Wardwell llp 450 Lexington Avenue New York, NY 10017 February 1, 2024 Re: Cosan S.A. Form 20-F for the Fiscal Year Ended December 31, 2022 Form 6-K Furnished on August 15, 2023 Response dated December 22, 2023 File No. 001-40155 U.S. Securities and Exchange Commission Division of Corporation Finance Office of Trade & Services 100 F Str

January 23, 2024 6-K

COSAN S.A. COSAN S.A. – Divulgação de Alienação de Participação Acionária Relevante

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2024 Commission File Number: 333-251238 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, – 16t

January 12, 2024 6-K

COSAN S.A. COSAN S.A. - Divulgação de Aquisição de Participação Acionária Relevante

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2024 Commission File Number: 333-251238 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, – 16t

December 22, 2023 CORRESP

Direct and Indirect Equity Interest as of December 31, 2022

Manuel Garciadiaz [email protected] Davis Polk & Wardwell llp 450 Lexington Avenue New York, NY 10017 December 22, 2023 Re: Cosan S.A. Form 20-F for the Fiscal Year Ended December 31, 2022 Filed April 24, 2023 Form 6-K Filed August 15,2023 File No. 001-40155 U.S. Securities and Exchange Commission Division of Corporation Finance Office of Trade & Services 100 F Street, N.E. Washingto

December 14, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of December 2023 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of December 2023 Commission File Number: 333-251238 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

November 14, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2023 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2023 Commission File Number: 333-251238 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

November 14, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2023 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2023 Commission File Number: 333-251238 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

November 14, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2023 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2023 Commission File Number: 333-251238 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

August 15, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2023 Commission File Number: 333-251238 COSAN S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2023 Commission File Number: 333-251238 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, – 16th

August 15, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2023 Commission File Number: 333-251238 COSAN S

6-K 1 MainDocument.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2023 Commission File Number: 333-251238 COSAN S.A. (Exact name of registrant as specified in its charter) N/A (Translation of registrant’s name into English) Av. Brigadei

August 15, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2023 Commission File Number: 333-251238 COSAN S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2023 Commission File Number: 333-251238 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, – 16th

June 30, 2023 EX-13.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2022 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

June 30, 2023 EX-13.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2022 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

June 30, 2023 EX-12.1

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 12.1 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Luis Henrique Cals de Beauclair Guimarães, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circum

June 30, 2023 EX-13.3

Equity interest

EXHIBIT 13.3 . Combined consolidated financial statements as of March 31, 2023, and 2022 and for the three years in the period ended March 31, 2023, and Independent auditor’s report 1 Contents Independent auditor's report on the combined consolidated financial statements 3 Consolidated statements of financial position 5 Combined consolidated statements of income 7 Combined consolidated statements

June 30, 2023 EX-12.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 12.2 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Ricardo Lewin, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such sta

June 30, 2023 20-F/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F/A (Amendment No. 1) ☐REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITI

June 23, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of June 2023 Commission File Number: 333-251238 COSAN S.A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of June 2023 Commission File Number: 333-251238 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, – 16th f

June 20, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of June 2023 Commission File Number: 333-251238 COSAN S.A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of June 2023 Commission File Number: 333-251238 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, – 16th f

May 16, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2023 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2023 Commission File Number: 333-251238 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, – 16th fl

May 16, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2023 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2023 Commission File Number: 333-251238 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, – 16th fl

April 28, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2023 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2023 Commission File Number: 333-251238 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, – 16th

April 24, 2023 EX-4.19

Loan Agreement dated October 7, 2022, among Cosan Oito S.A., JP Morgan Chase Bank N.A., London Branch and Banco J.P. Morgan S.A.

EXHIBIT 4.19 LOAN AGREEMENT dated as of October 7, 2022 among COSAN OITO S.A., as Borrower, JPMORGAN CHASE BANK, N.A., LONDON BRANCH, as Lender and BANCO J.P. MORGAN S.A., as Collateral Agent 1 TABLE OF CONTENTS Page ARTICLE 1. Definitions and Accounting Terms. 2 Section 1.01 Certain Defined Terms 2 Section 1.02 Times of Day 18 Section 1.03 Terms Generally 18 ARTICLE 2. Amounts and Terms of the Ad

April 24, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2023 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2023 Commission File Number: 333-251238 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, – 16th

April 24, 2023 EX-4.16

Schedule dated October 5, 2022, to the Master Derivatives Agreement dated as of October 5, 2022, between Cosan Oito S.A. and Banco J.P. Morgan S.A.

EXHIBIT 4.16 APÊNDICE AO CONTRATO GLOBAL DE DERIVATIVOS SCHEDULE TO THE MASTER DERIVATIVES AGREEMENT Pelo presente instrumento, as Partes, By this instrument, the Parties, BANCO J.P. MORGAN S.A., instituição financeira com sede na Cidade de São Paulo, Estado de São Paulo, na Avenida Brigadeiro Faria Lima, nº 3729, 13º ao 15º andares, inscrita no CNPJ/ME sob nº 33.172.537/0001-98, por seus represen

April 24, 2023 EX-12.2

Certification pursuant to section 302 of the Sarbanes-Oxley Act of 2002 of the Chief Financial Officer.

EXHIBIT 12.2 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Ricardo Lewin, certify that: 1.I have reviewed this annual report on Form 20-F of Cosan S.A.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such state

April 24, 2023 EX-12.1

Certification pursuant to section 302 of the Sarbanes‑Oxley Act of 2002 of the Chief Executive Officer.

EXHIBIT 12.1 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Luis Henrique Cals de Beauclair Guimarães, certify that: 1.I have reviewed this annual report on Form 20-F of Cosan S.A.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumst

April 24, 2023 EX-4.23

Confirmation of Derivative Transaction – Collar Plus Forward dated October 7, 2022, among Cosan Oito S.A. and Banco J.P. Morgan S.A.*

EXHIBIT 4.23 Certain information has been omitted from the exhibit because it is both not material and is the type that the registrant treats as private or confidential. The omissions have been indicated by (“[***]”). CONFIRMAÇÃO DE OPERAÇÕES DE DERIVATIVOS – COLLAR COM TERMO CONFIRMATION OF DERIVATIVE TRANSACTION – COLLAR PLUS FORWARD Esta Confirmação (“Confirmação”) tem por objetivo reger as Ope

April 24, 2023 EX-1.1

By-Laws of Cosan S.A.

EXHIBIT 1.1 BYLAWS OF COSAN S.A. CHAPTER I - NAME, HEAD OFFICES, PURPOSE AND TERM Article 1 - Cosan S.A. (“Company”) is a corporation governed by the provisions of these Bylaws (“Bylaws”) and applicable legal provisions. Paragraph 1 - As the Company was accepted at the Novo Mercado (“Novo Mercado”) of the B3 S.A. Brasil, Bolsa, Balcão (“B3”), the Company, its shareholders, including controlling sh

April 24, 2023 EX-4.20

Loan Agreement dated October 7, 2022, among Cosan Oito S.A., Citibank, N.A., London Branch, and Citigroup Global Markets Brasil, Corretora de Câmbio, Títulos e Valores Mobiliários S.A.

EXHIBIT 4.20 LOAN AGREEMENT dated as of October 7, 2022 among COSAN OITO S.A., as Borrower, Citibank, N.A., LONDON BRANCH, as Lender and CITIGROUP GLOBAL MARKETS BRASIL, CORRETORA DE CÂMBIO, TÍTULOS E VALORES MOBILIÁRIOS S.A., as Collateral Agent 1 TABLE OF CONTENTS Page ARTICLE 1. Definitions andAccounting Terms. 2 Section 1.01 Certain Defined Terms 2 Section 1.02 Times of Day 18 Section 1.03 Ter

April 24, 2023 EX-2.7

Description of Securities.

EXHIBIT 2.7 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Description of Common Shares General We are a corporation (sociedade anônima) of indefinite term incorporated under the laws of Brazil, having our registered office in the city of São Paulo, state of São Paulo, at Avenida Brigadeiro Faria Lima, 4,100 – 16th floor, room 1,

April 24, 2023 EX-4.24

Confirmation of Derivative Transaction – Collar Plus Forward dated October 7, 2022, among Cosan Oito S.A. and Banco Citibank S.A.*

EXHIBIT 4.24 Certain information has been omitted from the exhibit because it is both not material and is the type that the registrant treats as private or confidential. The omissions have been indicated by (“[***]”). CONFIRMAÇÃO DE OPERAÇÕES DE DERIVATIVOS – COLLAR COM TERMO CONFIRMATION OF DERIVATIVE TRANSACTION – COLLAR PLUS FORWARD Esta Confirmação (“Confirmação”) tem por objetivo reger as Ope

April 24, 2023 EX-4.18

Schedule dated October 5, 2022, to the Master Derivatives Agreement dated as of October 5, 2022, between Cosan Oito S.A. and Banco Citibank S.A.

EXHIBIT 4.18 APÊNDICE AO CONTRATO GLOBAL DE DERIVATIVOS SCHEDULE TO MASTER DERIVATIVES AGREEMENT Pelo presente instrumento e na melhor forma de Direito, as Partes, By this instrument and according to the law, the Parties hereto, (A) Citibank N.A. – Filial Brasileira, banco autorizado a operar no Brasil, onde tem estabelecimento principal na cidade de São Paulo, na Avenida Paulista, 1.111, inscrito

April 24, 2023 EX-13.1

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Executive Officer.

EXHIBIT 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2022 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

April 24, 2023 EX-13.2

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Financial Officer.

EXHIBIT 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2022 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

April 24, 2023 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT O

April 24, 2023 EX-4.21

Confirmation of Derivative Transaction – Collar dated October 6, 2022, among Cosan Oito S.A. and Banco J.P. Morgan S.A.*

EXHIBIT 4.21 Certain information has been omitted from the exhibit because it is both not material and is the type that the registrant treats as private or confidential. The omissions have been indicated by (“[***]”) CONFIRMAÇÃO DE OPERAÇÕES DE DERIVATIVOS CONFIRMATION OF DERIVATIVE TRANSACTION Esta Confirmação (“Confirmação”) tem por objetivo reger as Operações de Derivativos entre a Parte A e a

April 24, 2023 EX-4.17

English translation of the Master Derivatives Agreement dated October 5, 2022, between Cosan Oito S.A. and Banco Citibank S.A.

EXHIBIT 4.17 MASTER DERIVATIVES AGREEMENT (Version October 2003) Dated October 5, 2022 between BANCO CITIBANK S.A. and COSAN OITO S.A. INDEX I. - OBJECT 1 II. - INTERPRETATION 1 III. - DEFINITIONS 2 IV. - REPRESENTATIONS 4 V. - PROCEDURES FOR ENTERING INTO DERIVATIVES TRANSACTIONS 5 VI. - REGISTRATION OF TRANSACTIONS 5 VII. - CONFIRMATION AND TERMS 6 VIII. - PAYMENT OR DELIVERY 6 IX. - TAXES, PENA

April 24, 2023 EX-4.22

Confirmation of Derivative Transaction – Collar dated October 6, 2022, among Cosan Oito S.A. and Banco Citibank S.A.*

EXHIBIT 4.22 Certain information has been omitted from the exhibit because it is both not material and is the type that the registrant treats as private or confidential. The omissions have been indicated by (“[***]”). CONFIRMAÇÃO DE OPERAÇÕES DE DERIVATIVOS CONFIRMATION OF DERIVATIVE TRANSACTION Esta Confirmação (“Confirmação”) tem por objetivo reger as Operações de Derivativos entre a Parte A e a

April 24, 2023 EX-2.6

Third Supplemental Indenture dated July 15, 2022, among Cosan S.A. and U.S. Bank Trust Company National Association, as Trustee, Principal Paying Agent, Registrar and Transfer Agent to the Indenture dated as of July 31, 2019, among Cosan Limited and U.S. Bank National Association, as Trustee, Principal Paying Agent, Registrar and Transfer Agent.

EXHIBIT 2.6 COSAN S.A., as Company U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, as Trustee, Principal Paying Agent, Registrar and Transfer Agent THIRD SUPPLEMENTAL INDENTURE Dated as of July 15, 2022 5.500% Senior Notes Due September 20, 2029 THIRD SUPPLEMENTAL INDENTURE (the “Third Supplemental Indenture”), dated as of July 15, 2022, between Cosan S.A., a sociedade anônima (corporation) organiz

April 24, 2023 EX-4.15

English translation of the Master Derivatives Agreement dated October 5, 2022, between Cosan Oito S.A. and Banco J.P. Morgan S.A.

EXHIBIT 4.15 MASTER DERIVATIVES AGREEMENT (Version October 2003) Dated October 5, 2022 between BANCO J.P. MORGAN S.A. and COSAN OITO S.A. INDEX I. - OBJECT 1 II. - INTERPRETATION 2 III. - DEFINITIONS 2 IV. - REPRESENTATIONS 5 V. - PROCEDURES FOR ENTERING INTO DERIVATIVES TRANSACTIONS 6 VI. - REGISTRATION OF TRANSACTIONS 7 VII. - CONFIRMATION AND TERMS 7 VIII. - PAYMENT OR DELIVERY 8 IX. - TAXES, P

March 1, 2023 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2023 Commission File Number: 333-251238 COS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2023 Commission File Number: 333-251238 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, –

March 1, 2023 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2023 Commission File Number: 333-251238 COS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2023 Commission File Number: 333-251238 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, –

March 1, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2023 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2023 Commission File Number: 333-251238 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

March 1, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2023 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2023 Commission File Number: 333-251238 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

December 29, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of December 2022 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of December 2022 Commission File Number: 333-251238 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

December 28, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of December 2022 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of December 2022 Commission File Number: 333-251238 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

December 27, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of December 2022 Commission File Number: 333-251238 COSAN

6-K 1 MainDocument.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of December 2022 Commission File Number: 333-251238 COSAN S.A. (Exact name of registrant as specified in its charter) N/A (Translation of registrant’s name into English) Av. Brigad

November 14, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2022 Commission File Number: 333-251238 COSAN

6-K 1 MainDocument.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2022 Commission File Number: 333-251238 COSAN S.A. (Exact name of registrant as specified in its charter) N/A (Translation of registrant’s name into English) Av. Brigad

November 14, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2022 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2022 Commission File Number: 333-251238 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

October 14, 2022 CORRESP

* * *

Manuel Garciadiaz [email protected] Davis Polk & Wardwell llp 450 Lexington Avenue New York, NY 10017 October 14, 2022 Re: Cosan S.A. Form 20-F for the Fiscal Year Ended December 31, 2021 Filed May 16, 2022 Form 6-K Filed August 12, 2022 File No. 001-40155 U.S. Securities and Exchange Commission Division of Corporation Finance Office of Trade & Services 100 F Street, N.E. Washington,

October 11, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2022 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2022 Commission File Number: 333-251238 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, ? 16t

October 7, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2022 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2022 Commission File Number: 333-251238 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, ? 16t

October 3, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of September 2022 Commission File Number: 333-251238 COSA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of September 2022 Commission File Number: 333-251238 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, ? 1

September 28, 2022 EX-13.2

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Financial Officer.

EXHIBIT 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2021 (the ?Report?) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

September 28, 2022 EX-13.1

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Executive Officer.

EXHIBIT 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2021 (the ?Report?) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

September 28, 2022 20-F/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F/A (Amendment No. 1) ?REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURI

September 28, 2022 EX-13.3

Financial Statements for the fiscal years ended March 31, 2022, 2021 and 2020 of Raízen S.A.

EXHIBIT 13.3 Combined consolidated financial statements as of March 31, 2022 and for the three years ended March 31, 2022 and Independent auditor?s report 1 Contents Independent auditor?s report on the combined consolidated financial statements 3 Combined Consolidated statement of financial position and combined consolidated statement of financial position 7 Combined consolidated statement of inco

September 28, 2022 EX-12.1

Certification pursuant to section 302 of the Sarbanes‑Oxley Act of 2002 of the Chief Executive Officer.

EXHIBIT 12.1 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Luis Henrique Cals de Beauclair Guimar?es, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circum

September 28, 2022 EX-12.2

Certification pursuant to section 302 of the Sarbanes-Oxley Act of 2002 of the Chief Financial Officer.

EXHIBIT 12.2 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Ricardo Lewin, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such sta

August 12, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2022 Commission File Number: 333-251238 COSAN S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2022 Commission File Number: 333-251238 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, ? 16th

August 12, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2022 Commission File Number: 333-251238 COSAN S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2022 Commission File Number: 333-251238 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, ? 16th

July 13, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 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, ? 16th fl

June 14, 2022 SC 13D

CSAN / Cosan S.A. (each representing one Common Share) / Queluz Holdings Ltd. - FORM SC 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )* Cosan S.A. (Name of Issuer) Common shares, without par value (the ?Shares?) and American Depositary Shares (the ?ADSs?) (as evidenced by American Depositary Receipts), each representing four Shares (Title of Class of Securities) 22113B 103** (CUSIP Number

June 14, 2022 EX-99.3

JOINT FILING AGREEMENT

EXHIBIT 3 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the common shares of Cosan S.

May 24, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 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, ? 16th fl

May 16, 2022 EX-13.2

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Financial Officer.

EXHIBIT 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2021 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

May 16, 2022 EX-12.1

Certification pursuant to section 302 of the Sarbanes‑Oxley Act of 2002 of the Chief Executive Officer.

EXHIBIT 12.1 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Luis Henrique Cals de Beauclair Guimarães, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circum

May 16, 2022 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EX

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F ? REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT O

May 16, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 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, ? 16th fl

May 16, 2022 EX-1.1

By-Laws of Cosan S.A.

EXHIBIT 1.1 bylaws of Cosan S.A. CHAPTER I - NAME, HEAD OFFICES, PURPOSE AND TERM Article 1 - Cosan S.A. (?Company?) is a corporation governed by the provisions of these Bylaws (?Bylaws?) and applicable legal provisions. Paragraph 1 - As the Company was accepted at the Novo Mercado (?Novo Mercado?) of the B3 S.A. Brasil, Bolsa, Balc?o (?B3?), the Company, its shareholders, including controlling sh

May 16, 2022 EX-4.16

English translation of the Protocol and Justification of Merger of Cosan Investimentos e Participações S.A. into Cosan S.A. dated as of October 27, 2021 (incorporated by reference to Exhibit 4.16 of Cosan S.A.’s annual report on Form 20-F for the year ended December 31, 2021).

EXHIBIT 4.16 PROTOCOL AND JUSTIFICATION OF MERGER OF COSAN INVESTIMENTOS E PARTICIPA??ES S.A. INTO COSAN S.A. Through this instrument, the management of: I. COSAN INVESTIMENTOS E PARTICIPA??ES S.A., with principal place of business at Avenida Brigadeiro Faria Lima, 4100, 16th floor, Sala 03, in the City and State of S?o Paulo, enrolled with the CNPJ/ME (National Corporate Taxpayer's Register of th

May 16, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 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, ? 16th fl

May 16, 2022 EX-12.2

Certification pursuant to section 302 of the Sarbanes-Oxley Act of 2002 of the Chief Financial Officer.

EXHIBIT 12.2 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Ricardo Lewin, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such sta

May 16, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 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, ? 16th fl

May 16, 2022 EX-2.5

First Supplemental Indenture dated February 18, 2021 among Cosan Limited and U.S. Bank National Association, as Trustee, Principal Paying Agent, Registrar and Transfer Agent to the Indenture dated July 31, 2019 among Cosan Limited and U.S. Bank National Association, as Trustee, Principal Paying Agent, Registrar and Transfer Agent.

EXHIBIT 2.5 COSAN LIMITED, as Company U.S. BANK NATIONAL ASSOCIATION, as Trustee, Principal Paying Agent, Registrar and Transfer Agent FIRST SUPPLEMENTAL INDENTURE Dated as of February 18, 2021 5.500% Senior Notes Due September 20, 2029 FIRST SUPPLEMENTAL INDENTURE (the ?Supplemental Indenture?), dated as of February 18, 2021, between COSAN LIMITED, a limited liability exempted company organized u

May 16, 2022 EX-4.8

Seventh Amendment to the Shareholders’ Agreement of Raízen S.A. dated as of July 11, 2021 (incorporated by reference to Exhibit 4.8 of Cosan S.A.’s annual report on Form 20-F for the year ended December 31, 2021).

Exhibit 4.8 EXECUTION VERSION SEVENTH AMENDMENT TO THE SHAREHOLDERS? AGREEMENT OF RA?ZEN S.A. between COSAN S.A. COSAN INVESTIMENTOS E PARTICIPA??ES S.A. AND SHELL BRAZIL HOLDING B.V. AND RA?ZEN S.A. as intervening and consenting party DATED AS OF JULY 11, 2021 1 By this Seventh Amendment to the Shareholders? Agreement of Ra?zen S.A., signed on July 11, 2021: (1) COSAN S.A., a corporation organize

May 16, 2022 EX-2.6

Second Supplemental Indenture dated May 2, 2022 among Cosan S.A. and U.S. Bank National Association, as Trustee, Principal Paying Agent, Registrar and Transfer Agent to the Indenture dated July 31, 2019 among Cosan Limited and U.S. Bank National Association, as Trustee, Principal Paying Agent, Registrar and Transfer Agent.

EXHIBIT 2.6 COSAN S.A., as Company U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, as Trustee, Principal Paying Agent, Registrar and Transfer Agent SECOND SUPPLEMENTAL INDENTURE Dated as of May 2, 2022 5.500% Senior Notes Due September 20, 2029 SECOND SUPPLEMENTAL INDENTURE (the ?Second Supplemental Indenture?), dated as of May 2, 2022, between Cosan S.A., a sociedade an?nima (corporation) organize

May 16, 2022 EX-4.6

Amendment and Restatement Deed to the Joint Venture Agreement among Cosan S.A., Cosan Investimentos e Participações S.A., Raízen S.A., Shell Brazil Holding B.V. and Shell Overseas Holdings Limited dated as of July 11, 2021 (incorporated by reference to Exhibit 4.6 of Cosan S.A.’s annual report on Form 20-F for the year ended December 31, 2021).

Exhibit 4.6 Execution Version COSAN S.A. COSAN INVESTIMENTOS E PARTICIPA??ES S.A. RA?ZEN S.A. SHELL BRAZIL HOLDING B.V. SHELL OVERSEAS HOLDINGS LIMITED AMENDMENT AND RESTATEMENT DEED TO THE JOINT VENTURE AGREEMENT DATED 11 JULY 2021 Table of Conten CONTENTS ? Clause Page 1. Interpretation and Definitions 2 2. Amendment and Restatement of the JVA 3 3. General 3 4. Counterparts 3 5. Governing Law an

May 16, 2022 EX-13.1

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Executive Officer.

EXHIBIT 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2021 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

May 16, 2022 EX-2.7

Description of Securities.

Exhibit 2.7 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Description of Common Shares General We are a corporation (sociedade an?nima) of indefinite term incorporated under the laws of Brazil, having our registered office in the city of S?o Paulo, state of S?o Paulo, at Avenida Brigadeiro Faria Lima, 4,100 ? 16th floor, room 1,

May 10, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2022 Commission File Number: 333-251238 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, ? 16th fl

April 29, 2022 NT 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING

Commission File Number: 001-40155 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 20, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2022 Commission File Number: 333-251238 COSAN S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of April 2022 Commission File Number: 333-251238 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, ? 16th

February 22, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2022 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2022 Commission File Number: 333-251238 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

February 22, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2022 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2022 Commission File Number: 333-251238 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

February 22, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2022 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2022 Commission File Number: 333-251238 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

February 14, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2022 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2022 Commission File Number: 333-251238 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

January 6, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2022 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2022 Commission File Number: 333-251238 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, ? 16t

December 17, 2021 EX-12.1

Certification pursuant to section 302 of the Sarbanes-Oxley Act of 2002 of the Chief Executive Officer.

EXHIBIT 12.1 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Luis Henrique Cals de Beauclair Guimar?es, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circum

December 17, 2021 EX-13.2

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Financial Officer.

EXHIBIT 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2020 (the ?Report?) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

December 17, 2021 EX-12.2

Certification pursuant to section 302 of the Sarbanes-Oxley Act of 2002 of the Chief Financial Officer.

EXHIBIT 12.2 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Marcelo Eduardo Martins, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under whic

December 17, 2021 20-F/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F/A (Amendment No. 2)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F/A (Amendment No. 2) ? REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECUR

December 17, 2021 EX-13.1

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Executive Officer.

EXHIBIT 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2020 (the ?Report?) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

December 17, 2021 EX-13.3

Financial Statements for the fiscal years ended March 31, 2021, 2020 and 2019 of Raízen Energia and Raízen Combustíveis.**

EXHIBIT 13.3 Combined consolidated financial statements as of March 31, 2021 and Independent auditor’s report Contents Independent auditor´s report on the combined consolidated financial statements 1 Combined consolidated statements of financial position 5 Combined consolidated statements of income 7 Combined consolidated statements of comprehensive income 8 Combined consolidated statements of cha

December 2, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of December 2021 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of December 2021 Commission File Number: 333-251238 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

November 24, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 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

November 15, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 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

November 15, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 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

November 9, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 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

November 5, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 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

November 3, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of November 2021 Commission File Number: 333-251238 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

October 25, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2021 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2021 Commission File Number: 333-251238 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, ? 16t

October 1, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2021 Commission File Number: 333-251238 COSAN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of October 2021 Commission File Number: 333-251238 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, ? 16t

September 23, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of September 2021 Commission File Number: 333-251238 COSA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of September 2021 Commission File Number: 333-251238 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, ? 1

September 3, 2021 EX-12.1

Certification pursuant to section 302 of the Sarbanes-Oxley Act of 2002 of the Chief Executive Officer.

EXHIBIT 12.1 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Luis Henrique Cals de Beauclair Guimarães, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circum

September 3, 2021 EX-13.1

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Executive Officer.

EXHIBIT 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2020 (the ?Report?) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

September 3, 2021 EX-13.2

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Financial Officer.

EXHIBIT 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2020 (the ?Report?) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

September 3, 2021 EX-13.3

Financial Statements for the fiscal years ended March 31, 2021, 2020 and 2019 of Raízen Energia and Raízen Combustíveis.**

EXHIBIT 13.3 Ra?zen Group Combined consolidated financial statements as of March 31, 2021 and Independent auditor?s report Table of Contents Contents ? Independent auditor?s report on combined consolidated financial statements 1 Combined consolidated statements of financial position 4 Combined consolidated statements of income 6 Combined consolidated statements of comprehensive income 7 Combined c

September 3, 2021 EX-12.2

Certification pursuant to section 302 of the Sarbanes-Oxley Act of 2002 of the Chief Financial Officer.

EXHIBIT 12.2 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Marcelo Eduardo Martins, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under whic

September 3, 2021 20-F/A

As filed with the Securities and Exchange Commission on September 3, 2021 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F/A (Amendment No. 1)

As filed with the Securities and Exchange Commission on September 3, 2021 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

August 26, 2021 6-K

COSAN S.A. CNPJ/MF No. 50.746.577/0001-15 NIRE 35.300.177.045 Publicly-Held Company CVM 19836 Marcelo Eduardo Martins

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2021 Commission File Number: 333-251238 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, ? 16th

August 16, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2021 Commission File Number: 333-251238 COSAN S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2021 Commission File Number: 333-251238 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, ? 16th

August 16, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2021 Commission File Number: 333-251238 COSAN S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of August 2021 Commission File Number: 333-251238 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, ? 16th

June 7, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of June 2021 Commission File Number: 333-251238 COSAN S.A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of June 2021 Commission File Number: 333-251238 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, ? 16th f

June 3, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of June 2021 Commission File Number: 333-251238 COSAN S.A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of June 2021 Commission File Number: 333-251238 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, ? 16th f

May 17, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2021 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2021 Commission File Number: 333-251238 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, ? 16th fl

May 17, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2021 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2021 Commission File Number: 333-251238 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, ? 16th fl

May 17, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2021 Commission File Number: 333-251238 COSAN S.A.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2021 Commission File Number: 333-251238 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, ? 16th fl

May 7, 2021 EX-99.(E)

Certification under Rule 466

Certification under Rule 466 The depositary, JPMorgan Chase Bank, N.A., represents and certifies the following: (1) That it previously had filed a registration statement on Form F-6Pos (Cosan S.A. Registration No. 333-253471) that the Commission declared effective, with terms of deposit identical to the terms of deposit of this registration statement. (2) That its ability to designate the date and

May 7, 2021 EX-99.(A)(2)

Amendment No. 1 to the Deposit Agreement among Cosan S.A., J.P. Morgan Chase Bank N.A., as depositary, and the holders from time to time of American depositary shares issued thereunder, including the form of American depositary receipts (incorporated by reference to Exhibit 99(a)(2) to the Registration Statement on Form F-6 POS (file no. 333-253471) filed with the SEC on May 7, 2021).

J.P.Morgan J.P.Morgan AMENDMENT NO. 1, dated as of , 2021 (the "Amendment"), to the Deposit Agreement dated as of March 5, 2021 (as amended from time to time, the "Deposit Agreement") among Cosan S.A. (the ?Company?), JPMorgan Chase Bank, N.A., as depositary (the "Depositary"), and all Holders and Beneficial Owners from time to time of American depositary receipts ("ADRs") issued thereunder. W I T

May 7, 2021 F-6 POS

Amendment No. 1 to the Deposit Agreement among Cosan S.A., J.P. Morgan Chase Bank N.A., as depositary, and the holders from time to time of American depositary shares issued thereunder, including the form of American depositary receipts (incorporated by reference to Exhibit 99(a)(2) to the Registration Statement on Form F-6 POS (file no. 333-253471) filed with the SEC on May 7, 2021).

As filed with the U.S. Securities and Exchange Commission on May 7, 2021 Registration No. 333-253471 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM F-6 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 For Depositary Shares Evidenced by American Depositary Receipts Cosan S.A. (Exact name of issuer of deposited securities as spec

May 4, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2021 Commission File Number: 333-251238 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, ? 16th fl

May 4, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of May 2021 Commission File Number: 333-251238 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, ? 16th fl

April 30, 2021 EX-4.14

English translation of the Merger and Justification Protocol between Cosan Limited and Cosan S.A. (incorporated by reference to Exhibit 4.14 of Cosan S.A.’s annual report on Form 20‑F for the year ended December 31, 2020).

EXHIBIT 4.14 PROTOCOL AND JUSTIFICATION OF THE MERGER OF COSAN LIMITED INTO COSAN S.A. The senior managers of the companies identified below and the companies so identified: (a) COSAN S.A., a Brazilian joint-stock company (sociedade an?nima) with its principal place of business in the city of S?o Paulo, state of S?o Paulo, at Avenida Brigadeiro Faria Lima, 4,100, 16th floor, room 01, Zip Code 0453

April 30, 2021 EX-4.13

Deed of Merger Cosan Limited and Cosan S.A. (incorporated by reference to Exhibit 4.13 of Cosan S.A.’s annual report on Form 20‑F for the year ended December 31, 2020).

EXHIBIT 4.13 Deed of Merger COSAN LIMITED AND COSAN S.A. Crawford House | 50 Cedar Avenue | Hamilton HM11 | Bermuda T. +1441 295 6500 | F. +1441 295 6566 | E. [email protected] 1 Deed of Merger Dated January 22, 2021 BETWEEN (1) COSAN LIMITED, an exempted company incorporated in Bermuda, registration number 39981, of Crawford House, 50 Cedar Avenue, Hamilton HM11, Bermuda (?Bermuda HoldCo?); and (2)

April 30, 2021 EX-1.1

By-Laws of Cosan S.A. (incorporated by reference to Exhibit 1.1 of Cosan S.A.’s annual report on Form 20-F for the year ended December 31, 2020).

EXHIBIT 1.1 bylaws of Cosan S.A. CHAPTER I - NAME, HEAD OFFICES, PURPOSE AND TERM Article 1 - Cosan S.A. (?Company?) is a corporation governed by the provisions of these Bylaws (?Bylaws?) and applicable legal provisions. Paragraph 1 - As the Company was accepted at the Novo Mercado (?Novo Mercado?) of the B3 S.A. Brasil, Bolsa, Balc?o (?B3?), the Company, its shareholders, including controlling sh

April 30, 2021 EX-4.15

English translation of the Merger and Justification Protocol between Cosan Logística and Cosan S.A. (incorporated by reference to Exhibit 4.15 of Cosan S.A.’s annual report on Form 20‑F for the year ended December 31, 2020).

EXHIBIT 4.15 PROTOCOL AND JUSTIFICATION OF MERGER OF COSAN LOG?STICA S.A. BY COSAN S.A. The managers of the companies identified below, as well as the respective companies also identified below: (a) COSAN S.A., a corporation, headquartered in the city of S?o Paulo, State of S?o Paulo, at Avenida Brigadeiro Faria Lima, 4.100, 16? andar, sala 01, CEP 04538-132, registered with the CNPJ/ ME under No.

April 30, 2021 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F ? REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT O

April 30, 2021 EX-11.1

Code of Ethics (incorporated by reference to Exhibit 11.1 of Cosan S.A.’s annual report on Form 20‑F for the year ended December 31, 2020).

EXHIBIT 11.1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

April 30, 2021 EX-4.16

Fifth amendment, dated as of October 28, 2020, to the Shareholders Agreement of Raízen Combustíveis S.A. dated as of June 1, 2011 (incorporated by reference to Exhibit 4.16 of Cosan S.A.’s annual report on Form 20-F for the year ended December 31, 2020).

EXHIBIT 4.16 Fifth Amendment to the Shareholders? Agreement of Ra?zen Combust?veis S.A. between Cosan S.A. Cosan Investimentos e Participa??es S.A. and Shell Brazil Holding B.V. and Ra?zen Combust?veis S.A. as intervening and consenting party Dated as of October 28, 2020 1 By this Fifth Amendment to the Shareholders? Agreement of Ra?zen Combust?veis S.A., signed on October 28, 2020: (1) Cosan S.A.

April 30, 2021 EX-12.2

Certification pursuant to section 302 of the Sarbanes-Oxley Act of 2002 of the Chief Financial Officer.

EXHIBIT 12.2 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Marcelo Eduardo Martins, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under whic

April 30, 2021 EX-2.5

Description of Securities (incorporated by reference to Exhibit 2.5 of Cosan S.A.’s annual report on Form 20-F for the year ended December 31, 2020).

Exhibit 2.5 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Description of Common Shares General We are a corporation (sociedade an?nima) of indefinite term incorporated under the laws of Brazil, having our registered office in the city of S?o Paulo, state of S?o Paulo, at Avenida Brigadeiro Faria Lima, 4,100 ? 16th floor, room 1,

April 30, 2021 EX-13.1

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Executive Officer.

EXHIBIT 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2020 (the ?Report?) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

April 30, 2021 EX-13.2

Certification pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, of the Chief Financial Officer.

EXHIBIT 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the fiscal year ended December 31, 2020 (the ?Report?) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

April 30, 2021 EX-12.1

Certification pursuant to section 302 of the Sarbanes-Oxley Act of 2002 of the Chief Executive Officer.

EXHIBIT 12.1 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Luis Henrique Cals de Beauclair Guimar?es, certify that: 1. I have reviewed this annual report on Form 20-F of Cosan S.A.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circum

March 3, 2021 8-A12B

- FORM 8-A12B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 Cosan S.A. (Exact name of Registrant as Specified in Its Charter) Federative Republic of Brazil Not Applicable (State of incorporation or organization) (I.R.S. Employer Identification No.) Avenida

March 2, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of March 2021 Commission File Number: 333-251238 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, ? 16th

February 24, 2021 EX-99.(D)

Ziegler, Ziegler & Associates LLP Counselors at Law 570 Lexington Avenue, Suite 2405 New York, New York 10022 (212) 319-7600 Telecopier (212) 319-7605 February 24, 2021

Ziegler, Ziegler & Associates LLP Counselors at Law 570 Lexington Avenue, Suite 2405 New York, New York 10022 (212) 319-7600 Telecopier (212) 319-7605 February 24, 2021 JPMorgan Chase Bank, N.

February 24, 2021 EX-99.(A)

Form of Deposit Agreement among Cosan S.A., J.P. Morgan Chase Bank N.A., as depositary, and the holders from time to time of American depositary shares issued thereunder, including the form of American depositary receipts (incorporated by reference to Exhibit 99(a) to the Registration Statement on Form F-6 (file no. 333-253471) filed with the SEC on February 24, 2021).

J.P.Morgan J.P.Morgan TABLE OF CONTENTS Page PARTIES 1 RECITALS 1 Section 1. Certain Definitions (a) ADR Register 1 (b) ADRs; Direct Registration ADRs 1 (c) ADS 1 (d) Beneficial Owner 1 (e) Custodian 2 (f) Deliver, execute, issue et al. 2 (g) Delivery Order 2 (h) Deposited Securities 2 (i) Direct Registration System 2 (j) Holder 2 (k) Securities Act of 1933 3 (l) Securities Exchange Act of 1934 3

February 24, 2021 F-6

Form of Deposit Agreement among Cosan S.A., J.P. Morgan Chase Bank N.A., as depositary, and the holders from time to time of American depositary shares issued thereunder, including the form of American depositary receipts (incorporated by reference to Exhibit 99(a) to the Registration Statement on Form F‑6 (file no. 333-253471) filed with the SEC on February 24, 2021).

As filed with the U.S. Securities and Exchange Commission on February 24, 2021 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-6 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 For Depositary Shares Evidenced by American Depositary Receipts Cosan S.A. (Exact name of issuer of deposited securities as specified in its charter) n/a (Transla

February 12, 2021 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2021 Commission File Number: 333-251238 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

February 12, 2021 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2021 Commission File Number: 333-251238 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

February 9, 2021 6-K

Current Report of Foreign Issuer -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of February 2021 Commission File Number: 333-251238 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

January 25, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Issuer Pursuant To Rule 13a-16 Or 15d-16 of the Securities Exchange Act of 1934 For the month of January 2021 Commission File Number: 005-83905 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, – 16th

December 29, 2020 CORRESP

-

December 29, 2020 VIA EDGAR Office of Finance Division of Corporation Finance U.S. Securities and Exchange Commission 100 F Street, NE Washington, D.C. 20549 Attn: Lauren Nguyen Re: Cosan S.A. Registration Statement on Form F-4 File No. 333-251238 Dear Ms. Nguyen: Pursuant to Rule 461 under the Securities Act of 1933, as amended, Cosan S.A. (the ?Company?), hereby requests that the effective date

December 21, 2020 EX-4.1

Form of Deposit Agreement*

Exhibit 4.1 TABLE OF CONTENTS Page PARTIES 1 RECITALS 1 Section 1. Certain Definitions (a) ADR Register 1 (b) ADRs; Direct Registration ADRs 1 (c) ADS 1 (d) Beneficial Owner 1 (e) Custodian 2 (f) Deliver, execute, issue et al. 2 (g) Delivery Order 2 (h) Deposited Securities 2 (i) Direct Registration System 2 (j) Holder 2 (k) Securities Act of 1933 3 (l) Securities Exchange Act of 1934 3 (m) Shares

December 21, 2020 EX-2.1

English Translation of the Form of Merger Protocol*

Exhibit 2.1 PROTOCOL AND JUSTIFICATION OF THE MERGER OF COSAN LIMITED INTO COSAN S.A. The senior managers of the companies identified below and the companies so identified: (a) COSAN S.A., a Brazilian joint-stock company (sociedade anônima) with its principal place of business in the city of São Paulo, state of São Paulo, at Avenida Brigadeiro Faria Lima, 4,100, 16th floor, room 01, Zip Code 04538

December 21, 2020 F-4/A

- FORM F-4/A

As filed with the Securities and Exchange Commission on December 21, 2020. Registration Statement No. 333-251238 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to FORM F-4 Registration Statement Under the Securities Act of 1933 Cosan S.A. (Exact Name of Registrant as Specified in its Charter) Cosan Inc. (Translation of Registrant’s Name into English) Federa

December 21, 2020 CORRESP

-

New York Northern California Washington DC São Paulo London Paris Madrid Tokyo Beijing Hong Kong Manuel Garciadiaz Davis Polk & Wardwell LLP 450 Lexington Avenue New York, NY 10017 212 450 4000 tel 212 701 5800 fax CONFIDENTIAL December 21, 2020 Re: Cosan S.

December 17, 2020 425

Merger Prospectus - FORM 425

Filed by Cosan S.A. Pursuant to Rule 425 of the U.S. Securities Act of 1933, as amended Subject Company: Cosan Limited Commission File Number: 1-33659 COSAN S.A. Publicly Held Company Corporate Taxpayer (CNPJ) nº 50.746.577/0001-15 NIRE 35.300.177.045 | CVM Code No. 19836 COSAN LOGÍSTICA S.A. Publicly Held Company Corporate Taxpayer (CNPJ) nº 17.346.997/0001-39 NIRE 35.300.447.581 | CVM Code No. 2

December 9, 2020 EX-99.2

Form of Broker Card

EXHIBIT 99.2

December 9, 2020 EX-99.1

Form of Proxy Card

EXHIBIT 99.1

December 9, 2020 EX-21.1

List of Subsidiaries

EXHIBIT 21.1 SUBSIDIARIES OF THE COMPANIES December 31, 2019 December 31, 2018 Directly owned subsidiaries of Cosan Limited Cosan Logística S.A. 73.49% 72.50% Cosan S.A. 64.59% 60.25% Cosan Limited Partners Brasil Consultoria Ltda. 60.00% 60.00% Sinlog Tecnologia em Logística S.A.(1) 47.62% — Interest of Cosan S.A. in its subsidiaries Cosan Cayman II Limited 100.00% 100.00% Cosan Global Limited 10

December 9, 2020 EX-99.3

Form of Notice

EX-99.3 10 dp142648ex9903.htm EXHIBIT 99.3 EXHIBIT 99.3

December 9, 2020 F-4

- FORM F-4

As filed with the Securities and Exchange Commission on December 9, 2020. Registration Statement No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-4 Registration Statement Under the Securities Act of 1933 Cosan S.A. (Exact Name of Registrant as Specified in its Charter) Cosan Inc. (Translation of Registrant’s Name into English) Federative Republic of Brazil (S

December 9, 2020 EX-2.2

Form of Deed of Merger

Exhibit 2.2 Deed of Merger COSAN LIMITED AND COSAN S.A. Crawford House | 50 Cedar Avenue | Hamilton HM11 | Bermuda T. +1 441 295 6500 | F. +1 441 295 6566 | E. [email protected] 1 Deed of Merger Dated: 2020 BETWEEN (1) COSAN LIMITED, an exempted company incorporated in Bermuda, registration number 39981, of Crawford House, 50 Cedar Avenue, Hamilton HM11, Bermuda (“Bermuda HoldCo”); and (2) COSAN S.A

December 9, 2020 EX-3.1

English Translation of the Current By-Laws of Cosan S.A.

EXHIBIT 3.1 BYLAWS OF COSAN S.A. CHAPTER I - NAME, HEAD OFFICES, PURPOSE AND TERM Article 1 - Cosan S.A. (“Company”) is a corporation governed by the provisions of these Bylaws (“Bylaws”) and applicable legal provisions. Paragraph 1 - As the Company was accepted at the Novo Mercado (“Novo Mercado”) of the B3 S.A. - Bolsa de Valores, Mercadorias e Futuros (“B3”), the Company, its shareholders, incl

December 9, 2020 CORRESP

-

New York Northern California Washington DC São Paulo London Paris Madrid Tokyo Beijing Hong Kong Manuel Garciadiaz Davis Polk & Wardwell LLP 450 Lexington Avenue New York, NY 10017 212 450 4000 tel 212 701 5800 fax CONFIDENTIAL December 9, 2020 Re: Cosan S.

December 4, 2020 425

Merger Prospectus - FORM 425

Filed by Cosan S.A. Pursuant to Rule 425 of the U.S. Securities Act of 1933, as amended Subject Company: Cosan Limited Commission File Number: 1-33659 COSAN S.A. Publicly Held Company Corporate Taxpayer ID (CNPJ) 50.746.577/0001-15 NIRE 35.300.177.045 | CVM Code No. 19836 COSAN LOGÍSTICA S.A. Publicly Held Company Corporate Taxpayer ID (CNPJ) 17.346.997/0001-39 NIRE 35.300.447.581 | CVM Code No. 2

October 29, 2020 DRS/A

-

Confidential Treatment Requested by Cosan S.A. Pursuant to 17 C.F.R. Section 200.83 As confidentially submitted to the Securities and Exchange Commission on October 29 , 2020. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information herein remains strictly confidential. Registration Statement No. 333- UNITED STATES SECURITIES AND

October 29, 2020 DRSLTR

-

New York Northern California Washington DC São Paulo London Paris Madrid Tokyo Beijing Hong Kong Manuel Garciadiaz Davis Polk & Wardwell LLP 450 Lexington Avenue New York, NY 10017 212 450 4000 tel 212 701 5800 fax CONFIDENTIAL October 29, 2020 Re: Cosan S.

October 29, 2020 EX-21.1

SUBSIDIARIES OF THE COMPANIES

Exhibit 21.1 SUBSIDIARIES OF THE COMPANIES December 31, 2019 December 31, 2018 Directly owned subsidiaries Cosan Logística S.A. 73.49% 72.50% Cosan S.A. 64.59% 60.25% Cosan Limited Partners Brasil Consultoria Ltda. 60.00% 60.00% Sinlog Tecnologia em Logística S.A.(1) 47.62% — Interest of Cosan S.A. in its subsidiaries Cosan Cayman II Limited 100.00% 100.00% Cosan Global Limited 100.00% 100.00% Cos

October 2, 2020 DRS

-

Confidential Treatment Requested by Cosan S.A. Pursuant to 17 C.F.R. Section 200.83 As confidentially submitted to the Securities and Exchange Commission on October 2, 2020. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information herein remains strictly confidential. Registration Statement No. 333- UNITED STATES SECURITIES AND E

October 2, 2020 DRSLTR

-

New York Northern California Washington DC São Paulo London Paris Madrid Hong Kong Beijing Tokyo Manuel Garciadiaz Davis Polk & Wardwell LLP 450 Lexington Avenue New York, NY 10017 tel: 1-212-450-6095 manuel.

August 4, 2020 425

Merger Prospectus - FORM 425

Filed by Cosan S.A. Pursuant to Rule 425 of the U.S. Securities Act of 1933, as amended Subject Company: Cosan Limited Commission File Number: 1-33659 COSAN S.A. CNPJ 50.746.577/0001-15 NIRE 35.300.177.045 Publicly-held Company COSAN LOGÍSTICA S.A. CNPJ 17.346.997/0001-39 NIRE 35.300.447.581 Publicly-held Company NOTICE TO THE MARKET Cosan S.A. (B3: CSAN3) (“Cosan”) and Cosan Logística S.A. (B3: R

July 7, 2020 425

Merger Prospectus - FORM 425

Filed by Cosan S.A. Pursuant to Rule 425 of the U.S. Securities Act of 1933, as amended Subject Company: Cosan Limited Commission File Number: 1-33659 Corporate Reorganization Proposal July, 2020 Disclaimer 2 No Offer or Solicitation This presentation is for informational purposes and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of an

July 7, 2020 425

Merger Prospectus - FORM 425

Filed by Cosan S.A. Pursuant to Rule 425 of the U.S. Securities Act of 1933, as amended Subject Company: Cosan Limited Commission File Number: 1-33659 MATERIAL FACT Cosan S.A. (B3: CSAN3) (“Cosan”), Cosan Logística S.A. (B3: RLOG3) (“Cosan Log”) and Cosan Limited (NYSE: CZZ) (“CZZ”, and collectively with Cosan and Cosan Log, the “Companies”), the controlling shareholder of Cosan and Cosan Log, inf

April 21, 2008 425

Cosan Limited Announces Results of Exchange Offer

Filed by Cosan Limited Pursuant to Rule 425 of the U.S. Securities Act of 1933, as amended Subject of the offer: Cosan S.A. Ind?stria e Com?rcio Commission File Number: 333-147235 NEWS RELEASE Cosan Limited Announces Results of Exchange Offer S?o Paulo, April 18, 2008 ? Cosan Limited today announced that it has accepted for exchange all shares validly tendered pursuant to its offer to exchange up

March 19, 2008 SC 14D9

SECURITIES AND EXCHANGE COMMISSION

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 SOLICITATION/RECOMMENDATION STATEMENT UNDER SECTION 14(D)(4) OF THE SECURITIES EXCHANGE ACT OF 1934 COSAN S.A. IND?STRIA E COM?RCIO (Name of Subject Company) COSAN S.A. IND?STRIA E COM?RCIO (Name of Persons Filing Statement) Common Shares Av. Juscelino Kubitschek, 1726 ? 6th floor S?o Paulo, SP 04543-000, Brazil (55)(11) 3897

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