As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of Cosan S.A. The largest reported stake is Queluz Holdings Ltd.'s, at 20.7%. 2 filings are on record since September 23, 2025 (Schedule 13D/A, November 12, 2025).
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Cosan S.A. has 2 Schedule 13D or 13G filings on record since 2025-09-23. 1 holder's latest filing reports 5% or more of common shares, without par value ("shares") and american depositary shares ("adss"), each representing four shares. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Queluz Holdings Ltd. | 20.7% | 109,532,616 | SCHEDULE 13D/A, 2025-11-12 | 2025-11-10 |
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Purpose of Transaction (Item 4)
Queluz Holdings Ltd.
Item 4 of the original statement on Schedule 13D is amended and restated to read as follows: The Shares to which this Statement relates were acquired by the Reporting Persons with the purpose of investing in the Issuer's securities. The Shares subscribed for by New Holding as part of the transactions described in Item 3 were acquired with the purpose of investing in the Issuer's securities. Mr. Mello is the chairman of the board of the directors of the Issuer and the controlling shareholder of each of Queluz, AS Investimentos, AS Negocios and Rio das Pedras. Each of the Shares entitles its holder to one vote. Mr. Mello controls 20.7% of the Issuer's issued and outstanding share capital and voting power by virtue of his beneficial ownership and control of 822,312,930 of the Issuer's Shares (including the Shares represented by ADSs). On October 24, 2025, the Issuer furnished a Current Report on Form 6-K to the Securities and Exchange Commission (the "SEC") in which it disclosed that it is considering delisting its ADSs from the New York Stock Exchange ("NYSE"). If the Issuer does pursue this delisting, the ADSs would cease to be tradeable on the NYSE and listing of the Issuer's securities would be limited to the listing of the Shares on the Sao Paulo Stock Exchange (B3 S.A. - Brasil, Bolsa, Balcao). Additionally, the Issuer disclosed that if the Issuer meets the applicable criteria at any time after completing such delisting, the Issuer may pursue the deregistration of its …The first part of Item 4 of the SCHEDULE 13D/A filed 2025-11-12; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-09-23 | Queluz Holdings Ltd. | 36% | SCHEDULE 13D/A |
| 2025-11-12 | Queluz Holdings Ltd. | 20.7% | SCHEDULE 13D/A |
Questions about who owns Cosan S.A.
Who owns Cosan S.A.?
On this page, one holder's latest ownership filing reports 5% or more of Cosan S.A.: Queluz Holdings Ltd. (20.7%, Schedule 13D/A, filed 2025-11-12).
When did Queluz Holdings Ltd. buy into Cosan S.A.?
The filings give report dates, not purchase dates. The earliest filing from Queluz Holdings Ltd. on this page is the Schedule 13D/A, filed 2025-09-23, reporting 36%; its latest, Schedule 13D/A filed 2025-11-12, reports 20.7%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 2 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.