SEC Form 6-K filed by VALE S.A.

United States

Securities and Exchange Commission

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16

of the

Securities Exchange Act of 1934

For the month of

February 2025

Vale S.A.

Praia de Botafogo nº 186, 18º andar, Botafogo
22250-145 Rio de Janeiro, RJ, Brazil

(Address of principal executive office)

(Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.)

(Check One) Form 20-F x Form 40-F ¨

Press Release

Vale clarifies on sale of stake in Aliança Energia

Rio de Janeiro, February 14^th, 2025 – In attention to the news article published^[1] on the sale of a stake in Aliança Geração de Energia S.A. (“Aliança Energia”), Vale S.A. (“Vale” or “Company) clarifies that it is assessing the potential divestment of a 70%-stake in Aliança Energia, including the energy assets Sol do Cerrado and Consórcio Candonga, present in the Company’s portfolio, to Global Infrastructure Partners (“GIP”). Vale informs that there is no binding agreement signed about the sale and that any decision in this regard will be made in compliance with the Company’s policies and governance rules. Vale reinforces that it will continue to keep the market informed in a timely manner of any material fact regarding its business.

Marcelo Feriozzi Bacci

Executive Vice President, Finance and Investor Relations

For further information, please contact:

[email protected]

Thiago Lofiego: [email protected]

Mariana Rocha: [email protected]

Luciana Oliveti: [email protected]

Pedro Terra: [email protected]

Patricia Tinoco: [email protected]

This press release may include statements that present Vale’s expectations about future events or results. All statements, when based upon expectations about the future, involve various risks and uncertainties. Vale cannot guarantee that such statements will prove correct. These risks and uncertainties include factors related to the following: (a) the countries where we operate, especially Brazil and Canada; (b) the global economy; (c) the capital markets; (d) the mining and metals prices and their dependence on global industrial production, which is cyclical by nature; and (e) global competition in the markets in which Vale operates. To obtain further information on factors that may lead to results different from those forecast by Vale, please consult the reports Vale files with the U.S. Securities and Exchange Commission (SEC), the Brazilian Comissão de Valores Mobiliários (CVM) and in particular the factors discussed under “Forward-Looking Statements” and “Risk Factors” in Vale’s annual report on Form 20-F.

^[1] With the tittle ‘Vale advances in negotiations with GIP for sale of Aliança and Sol do Cerrado, sources say’, published by the Reuters news agency, available here.

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.