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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 2026

Vale S.A.

Praia de Botafogo nº 186, 18º andar,\nBotafogo
\n22250-145 Rio de Janeiro, RJ, Brazil

(Address of principal executive office)

(Indicate by check mark whether the registrant files\nor will file annual reports under cover of Form 20-F or Form 40-F.)

(Check One)\nForm 20-F x Form 40-F ¨

INDIVIDUAL FORMTrading of Securities by the Company itself, its subsidiaries and affiliatesIn 09/2026( ) only the following transactions\ninvolving securities and derivatives were carried out.(X) no transactions involving securities and derivatives were carried out. The following\npositions in securities and derivatives are held. Company Name: VALE S.A. Name: VALE S.A. CPF/CNPJ: 33.592.510/0001-54 Qualification:\nOpening Balance Security/Derivative Security Characteristics Quantity Shares ON 14,482,658 Other ADR 0 Transactions During the Month Security/Derivative\nSecurity Characteristics Broker Transaction Day Quantity Price Volume (R$) Closing Balance Security/Derivative Security Characteristics\nQuantity Shares ON 14,482,658 Other ADR 0 Company Name: VALE S.A. Name: Mineração Brasileiras Reunidas S.A. CPF/CNPJ: 33.417.445/0001-20\nQualification: Opening Balance Security/Derivative Security Characteristics Quantity Shares ON 3,534,700 Transactions During the Month\nSecurity/Derivative Security Characteristics Broker Transaction Day Quantity Price Volume (R$) Closing Balance Security/Derivative Security\nCharacteristics Quantity Shares ON 3,534,700 Company Name: VALE S.A. Name: Vale Holdings B.V. CPF/CNPJ: Qualification: Opening Balance\nSecurity/Derivative Security Characteristics Quantity Other ADR 165,379,611 Transactions During the Month Security/Derivative Security\nCharacteristics Broker Transaction Day Quantity Price Volume (R$) Closing Balance Security/Derivative Security Characteristics Quantity\nOther ADR 165,379,611

$\"\"$

Signatures

Pursuant to the requirements of the Securities\nExchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

	Vale S.A. \n (Registrant)

	By:	/s/ Thiago Lofiego
Date: October 13, 2026		Director of Investor Relations

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