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
October 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 ¨
3Q25 performance report dates Rio de Janeiro, October 2nd, 2025 - Vale SA (B3: VALE3 and NYSE: VALE) informs its investors the release
of its 3Q25 earnings on the following dates. 3Q25 production and sales report: Date: October 21st, 2025 (Tuesday) Time: After market close
3Q25 financial performance report: Date: October 30th, 2025 (Thursday) Time: After market close Conference call/webcast: Date: October
31st, 2025 (Friday) Time: 11h00/10h00/14h00 (Brasília/New York/London time) Vale will broadcast its webcast live in English with
simultaneous translation into Portuguese. Connection details will be available closer to the date on our website: www.vale.com/investors.
For further information, please contact: Vale.RI@vale.com Thiago Lofiego: thiago.lofiego@vale.com Mariana Rocha: mariana.rocha@vale.com
Luciana Oliveti: luciana.oliveti@vale.com Pedro Terra: pedro.terra@vale.com Patricia Tinoco: patricia.tinoco@vale.com 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. Press Release

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.
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Vale S.A.
(Registrant) |
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By: |
/s/ Thiago Lofiego |
Date: October 2, 2025 |
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Director of Investor Relations |