VALE 6-K

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

March 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 files Form 20-F report for the fiscal year 2024

Rio de Janeiro, March 28^th^, 2025 - Vale S.A. ("Vale" or "Company") informs that it has filed with the U.S. Securities and Exchange Commission (SEC) its Form 20-F report for the fiscal year 2024. The report is available on the SEC’s website, at www.sec.gov, and on Vale’s website, at www.vale.com/investors.

Investors can receive a printed copy of our complete audited financial statements, free of charge, by calling our ADR depositary, Citibank N.A., at +1-877-248-4237 (1-877-CITIADR).

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.

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.