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

December 2017

Vale S.A.

Avenida das Américas, No. 700 — Bloco 8, Sala 218
22640-100 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 the appointment of its new Executive Officer for the Base Metals division

Rio de Janeiro, December 6 th , 2017 - Vale S.A. (Vale) informs that Mr. Eduardo de Salles Bartolomeo was appointed as Vale’s new Executive Officer for the Base Metals division to begin on January 1 st , 2018.

Eduardo de Salles Bartolomeo has a graduate degree in metallurgical engineering from Universidade Federal Fluminense and MBA from Massachusetts Institute of Technology and from Katholieke Universiteit in Leuven, Belgium. He worked in Vale from 2007 to 2012 as the leader of several different departments, including the role of Executive Officer for the Fertilizer and Coal Operations and Marketing. He was a member of Vale’s Strategic Committee from September 2016 to October 2017. He has been a member of Vale’s Board of Directors since September 2016, and member of Financial Committee and Compliance and Risk Committee since November 2017.

With experience in leading large organizations in complex and competitive industries and a recognized track record in delivering results and achieving goals, Eduardo Bartolomeo’s main challenge will be to make the Base Metals business sustainable with long term positive cash generation. Vale wishes Eduardo success in his new challenge.

Vale would like to reinforce the appreciation and gratitude for Jennfier Maki’s commitment over the last 14 years at Vale and wish Jennifer every success in her upcoming projects.

For further information, please contact:

+55-21-3485-3900

Andre Figueiredo: andre.figueiredo@vale.com

Carla Albano Miller: carla.albano@vale.com

Fernando Mascarenhas: fernando.mascarenhas@vale.com

Andrea Gutman: andrea.gutman@vale.com

Bruno Siqueira: bruno.siqueira@vale.com

Claudia Rodrigues: claudia.rodrigues@vale.com

Denise Caruncho: denise.caruncho@vale.com

Mariano Szachtman: mariano.szachtman@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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