Ralph Gustavo Rosenberg Whitaker Carneiro - 18 Mar 2026 Form 3 Insider Report for Cosan S.A. (CSAN)

Reporting relationship: Director
Issuer ticker: CSAN
Reported as of: 18 Mar 2026
Net transaction value: $0
SEC form: 3
Accepted by SEC: 18 Mar 2026, 21:25:34 UTC
Source filing: View source filing
Reporting owner signature: /s/ Ralph Gustavo Rosenberg Whitaker Carneiro

Key filing fact

Ralph Gustavo Rosenberg Whitaker Carneiro filed Form 3 for Cosan S.A. (CSAN) on 18 Mar 2026.

Key facts

This page summarizes Ralph Gustavo Rosenberg Whitaker Carneiro's Form 3 filing for Cosan S.A. (CSAN).
0 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 18 Mar 2026, 21:25.

Change

No earlier filing in this sequence is available for direct comparison.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (1)

CIK 0002117754 Primary reporting owner

Rosenberg Whitaker Carneiro Ralph Gustavo

Relationship: Director
Address: RUA LEOPOLDO COUTO MAGALHAES JUNIOR, 822, 1ST FLOOR, SAO PAULO, BRAZIL
Signature: /s/ Ralph Gustavo Rosenberg Whitaker Carneiro
Signature date: 18 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CSAN holding

COMMON STOCK (CSAN3)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 4,251,582
Date: 18 Mar 2026
Ownership: CLASSE A DO PERFIN RALLY FUNDO DE INVESTIMENTO EM PARTICIPACOES MULTIESTRATEGIA RESP LIMITADA
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Mr. Carneiro owns common stock of Cosan S.A. through the investment fund, Classe A do Perfin Rally Fundo de Investimento em Participacoes Multiestrategia Responsabilidade Limitada. Mr. Carneiro disclaims beneficial ownership of the shares held by the investment fund except to the extent, if any, of his pecuniary interest therein.