Companhia Siderúrgica Nacional (National Steel Company) filed a Form 6-K with the U.S. Securities and Exchange Commission on November 10, 2026, disclosing a material change in its executive leadership effective November 9, 2026.

Key Highlights

  • CFO resignation: Antonio Marco Campos Rabello resigned as Chief Financial Officer and Investor Relations Executive, citing a personal decision to pursue new professional challenges.
  • Interim CFO appointed: Fabio Schvartsman, the sitting Chief Executive Officer, was appointed to perform the duties of Chief Financial Officer on an interim, concurrent basis.
  • New IR officer elected: Pedro Barros Mercadante Oliva was elected to serve as Interim Investor Relations Executive Officer.
  • Company assurance: Companhia Siderúrgica Nacional stated the change "does not alter its strategy, operations or financial commitments."
  • Asset divestment plan reaffirmed: The company reaffirmed confidence in the execution of its asset divestment plan.
  • Traded on two exchanges: The company trades on B3 under the ticker CSNA3 and on NYSE:SID.

Leadership Transition at Companhia Siderúrgica Nacional

Companhia Siderúrgica Nacional, known as CSN and translated into English as National Steel Company, disclosed in a Material Fact notice that its Board of Directors received Mr. Antonio Marco Campos Rabello's resignation from the roles of Chief Financial Officer and Investor Relations Executive on November 9, 2026. According to the filing, the departure followed his personal decision to pursue new professional challenges, and the company expressed gratitude for his "dedication, professionalism and significant contributions throughout his tenure."

To manage the transition, the Board took two simultaneous actions on the same date. First, it appointed Fabio Schvartsman, who already serves as Chief Executive Officer, to carry out the duties of Chief Financial Officer on an interim basis, alongside his existing role. Second, it elected Pedro Barros Mercadante Oliva to hold the position of Interim Investor Relations Executive Officer. Mr. Oliva signed the filing in his new capacity, and Mr. Schvartsman signed as both Chief Executive Officer and Chief Financial Officer, consistent with their newly combined interim responsibilities.

The company, a Brazilian steel producer headquartered at Av. Brigadeiro Faria Lima 3400 in São Paulo, Brazil, files annual reports with the SEC under Form 20-F as a foreign private issuer. In the filing, CSN reaffirmed confidence in the continuation of its operating performance and in the execution of its asset divestment plan, characterizing those commitments as unchanged by the leadership shift. The filing noted that the company remains available to shareholders and the market for clarification through its Investor Relations Department. The filing also contains forward-looking statements, which the company's own cautionary language identifies as subject to risks and uncertainties, with no guarantee that expected events or results will occur.

What Was Disclosed

The filing disclosed the resignation of CSN's CFO and Investor Relations Executive, the interim appointment of CEO Fabio Schvartsman to also serve as CFO, and the election of Pedro Barros Mercadante Oliva as Interim Investor Relations Executive Officer, all effective November 9, 2026.