Welcome to our dedicated page for Cosan S.A. SEC filings (Ticker: CSAN), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Cosan S.A. filings document foreign-private-issuer reporting for an ADR issuer with investments across energy, logistics, gas, lubricants and related infrastructure. The company’s Form 6-K reports and Form 20-F annual reporting cover IFRS financial statements, management reports, operating results and portfolio disclosures for businesses including Raízen, Compass, Moove and Rumo.
Material-event filings also describe capital-structure actions, debt-reduction initiatives, governance matters, ownership changes in controlled companies and securities offerings involving portfolio assets. These disclosures connect Brazilian CVM material facts with U.S. reporting for Cosan’s NYSE-listed American depositary shares.
Cosan S.A. reports an internal reorganization of a key shareholder group’s holdings. Vertiz Holding S.A. reduced its stake in Cosan from 1,450,000,000 common shares, or 36.56% of total capital, to 959,661,363 common shares, or 24.19% of total capital. Fundo de Investimento em Participações BPAC3 – Multiestratégia Responsabilidade Limitada now directly holds approximately 331,513,280 common shares, equivalent to about 8.36% of Cosan’s total share capital. The shareholder block states that its combined direct and indirect stake in Cosan is unchanged and that bound and unbound shares will continue to vote in the same manner.
Cosan S.A. is undertaking a series of debt liability management actions. The company will carry out the optional full early redemption of its 1st series of the 4th debenture issuance and its 6th debenture issuance on February 2, 2026, paying the nominal value (or outstanding balance) plus accrued remuneration and a premium of 0.35% per year, calculated on a business day basis until the original maturity dates.
In addition, wholly owned subsidiary Cosan Luxembourg S.A. will exercise the early call option on bonds maturing in 2029, redeeming the full principal amount of US$ 504,228,000.00 on February 17, 2026. The company states that these steps are part of a broader liability management process aimed at reducing indebtedness, improving its capital structure, and restoring financial flexibility.
Cosan S.A. reports that Banco Bradesco BBI S.A. and Banco BTG Pactual S.A. have jointly acquired preferred shares of Cosan Dez Participações S.A. for a total of R$4 billion. These shares represent approximately 23% of Cosan Dez’s total share capital and grant political rights equivalent to 9.98% of its voting capital.
Cosan Dez holds the shares of Compass Gás e Energia S.A. owned by Cosan. The transaction renegotiates financial terms previously agreed with Bradesco BBI in 2022. As part of the new structure, Cosan granted Bradesco BBI and BTG Pactual a put option on their Cosan Dez shares, exercisable in one or more stages from the 5th, 6th and 7th anniversaries of the transaction. Cosan states that this reduces the financial cost of the prior arrangement and aligns with its strategy to optimize liabilities following a recent capitalization.
Cosan S.A. reports that on December 22, 2025 it sold common shares of its subsidiary Rumo S.A. equivalent to approximately 4.96% of Rumo’s total share capital and, at the same time, entered into total return swap derivative instruments that provide the same economic exposure to those shares. This structure is described as part of Cosan’s strategy focused on liquidity and cash management.
Cosan states that the move does not reduce its political and economic rights in Rumo. After the transaction, Cosan’s overall participation in Rumo’s total share capital remains unchanged, with a 20.33% direct stake and a further 9.94% held via derivative instruments.
Cosan S.A. reported that on December 15 it sold common shares of its subsidiary Rumo S.A. equal to approximately 4.98% of Rumo’s total share capital. At the same time, Cosan entered into total return swap derivative instruments that provide the same economic exposure as the shares sold.
The company explains that this financial transaction is part of its strategy focused on liquidity and cash management and states that it does not reduce Cosan’s political and economic rights in Rumo. Cosan also sent a communication to Rumo in line with Article 12 of CVM Resolution No. 44.
Cosan S.A. (CSAN) reports weaker results for the nine months ended September 30, 2025. Consolidated net sales reached R$30.8 billion, down from R$32.2 billion a year earlier, while profit attributable to owners swung to a net loss of R$3.9 billion versus a R$126.4 million loss in 2024. EBITDA fell to R$7.5 billion from R$9.3 billion, pressured by higher financial expenses, negative derivative results and significant impairments, including R$1.0 billion mainly at Rumo and Moove.
Total assets declined to R$125.7 billion from R$141.3 billion, and total shareholders’ equity to R$32.1 billion from R$39.4 billion, reflecting losses and corporate movements. Cash and cash equivalents were R$12.9 billion, supported by strong operating cash flow of R$9.7 billion in the period. After quarter-end, Cosan completed primary share offerings of 2.1 billion new shares at R$5.00, raising R$10.5 billion and increasing share capital to R$10.28 billion.
Cosan S.A. announced executive and board changes. Rodrigo Araujo Alves resigned as Chief Financial and Investor Relations Officer, and Rafael Bergman will assume the role effective December 05, 2025. For the Board of Directors, effective November 19, 2025, Pedro Isamu Mizutani, Luis Henrique Cals de Beauclair Guimarães, Silvia Brasil Coutinho, and Vasco Augusto Pinto da Fonseca Dias Júnior resigned. André Santos Esteves was elected Vice Chairman, and Renato Antônio Secondo Mazzola and Ralph Gustavo Rosenberg were elected as Board Members.
Cosan also noted corresponding governance changes at subsidiaries Rumo, Compass, and jointly controlled Raízen, with Moove reflecting Rodrigo Araujo’s resignation and the appointments of Mazzola and Rosenberg. Management will address these updates during the earnings conference call on November 17, 2025.
Cosan S.A. (CSAN) — Schedule 13D/A Amendment No. 2: Reporting persons led by Rubens Ometto Silveira Mello updated their beneficial ownership and disclosed details of Cosan’s recent primary equity offerings and governance arrangements. Mr. Mello reports beneficial ownership of 822,312,930 Shares, equal to 20.7% of outstanding, through controlled entities and an indirect interest in New Holding.
The company completed two primary issuances totaling 2,100,000,000 Shares: the First Offering issued 1,812,500,000 Shares at R$5.00 per share for R$9,062.5 million in gross proceeds, including a 1,450,000,000 base tranche fully subscribed by Anchor Investors for R$7,250.0 million. The Second Offering added 287,500,000 Shares at the same price.
Lock-ups apply: 50% of First Offering subscriptions (others) for two years; for New Holding, 50% for four years and 50% for 100 days. A Shareholders’ Agreement effective November 10, 2025 includes a four-year lock-up and sets board and voting arrangements. Cosan disclosed it is considering delisting its ADSs from the NYSE. Each ADS represents four Shares.
Cosan S.A. announced that its controlling shareholders, Aguassanta Investimentos S.A. and Queluz Holding Limited, entered a shareholders’ agreement with funds affiliated with Perfin and BTG Pactual and with Vertiz Holding S.A., a new holding created for their joint investment in the company. The agreement became effective upon settlement of the company’s first public offering of shares.
Cosan will file the shareholders’ agreement, make it available on its website and at the CVM, and update its Reference Form within the legal deadlines.