Cosan S.A. Files December 2025 6-K Report

Ticker: CSAN · Form: 6-K · Filed: Dec 16, 2025 · CIK: 1430162

Sentiment: neutral

Topics: reporting, foreign-private-issuer, listing

Related Tickers: CSAN3, CSAN

TL;DR

Cosan S.A. (CSAN) filed its December 6-K, confirming 20-F annual report filing and dual B3/NYSE listings.

AI Summary

Cosan S.A. filed a Form 6-K on December 16, 2025, reporting for the month of December 2025. The filing indicates that Cosan S.A. is a foreign private issuer and files annual reports under Form 20-F. The company is listed on B3 under the ticker CSAN3 and on the NYSE under the ticker CSAN.

Why It Matters

This filing serves as an update for investors regarding Cosan S.A.'s reporting status and its dual listing on B3 and NYSE.

Risk Assessment

Risk Level: low — This is a routine filing confirming reporting status and listing information, with no new material financial or operational information disclosed.

Key Players & Entities

FAQ

What is the primary purpose of this Form 6-K filing?

The primary purpose of this Form 6-K filing is to report for the month of December 2025 and to indicate that Cosan S.A. files its annual reports under cover of Form 20-F.

On which stock exchanges is Cosan S.A. listed?

Cosan S.A. is listed on B3 under the ticker CSAN3 and on the NYSE under the ticker CSAN.

What is the filing date of this report?

This report was filed on December 16, 2025.

What is the reporting period for this Form 6-K?

The reporting period for this Form 6-K is the month of December 2025.

Does Cosan S.A. file its annual reports under Form 20-F or Form 40-F?

Cosan S.A. files its annual reports under cover of Form 20-F.

Filing Stats: 320 words · 1 min read · ~1 pages · Grade level 9.5 · Accepted 2025-12-16 06:26:31

Filing Documents

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized . Date: December 15, 2025 COSAN S.A. By: /s/ Rafael Bergman Name: Rafael Bergman Title: Chief Financial Officer

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