VALE Vale SA

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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

August 2018

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  o

(Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1))

(Check One) Yes o  No   x

(Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7))

(Check One) Yes  o  No   x

(Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.)

(Check One) Yes  o  No x

(If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b). 82-   .)

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Vale informs ratification of agreement with Brazilian authorities

Rio de Janeiro, August 08 2018 —Vale S.A. (Vale) informs the ratification at a conciliation hearing held today at the 12th Vara Federal Cível/Agrária de Minas Gerais (Federal Court of Minas Gerais) of the agreement signed on June 25 th , 2018 between Samarco Mineração S.A. (Samarco), its shareholders, Vale and BHP Billiton Brasil Ltda (BHP Brasil), and the following institutions: the Federal and State Prosecution offices (Ministério Público Federal e dos estados de Minas Gerais e Espírito Santo), the Federal Public Defenders’ office and the State Public Defenders’ offices of Minas Gerais and Espírito Santo (Defensoria Pública da União e dos Estados de Minas Gerais e Espírito Santo) and the Federal Attorneys’ office and State Attorneys’ offices of Minas Gerais and Espírito Santo (Advocacia Pública da União e dos Estados de Minas Gerais e Espírito Santo).

For further information, please contact:

+55-21-3485-3900

Andre Figueiredo: andre.figueiredo@vale.com

Andre Werner: andre.werner@vale.com

Carla Albano Miller: carla.albano@vale.com

Fernando Mascarenhas: fernando.mascarenhas@vale.com

Samir Bassil: samir.bassil@vale.com

Bruno Siqueira: bruno.siqueira@vale.com

Clarissa Couri: clarissa.couri@vale.com

Renata Capanema: renata.capanema@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 the French Autorité des Marchés Financiers (AMF), and in particular the factors discussed under “Forward-Looking Statements” and “Risk Factors” in Vale’s annual report on Form 20-F.

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