6-K

PETRÓLEO BRASILEIRO S.A.—PETROBRAS

/s/ Andrea Marques de Almeida

Andrea Marques de Almeida

Chief Financial Officer and Investor Relations Officer

Petrobras informs about the withdrawal of the arbitration initiated in Argentina against the company

Rio de Janeiro, June 14, 2019 – Petróleo Brasileiro S.A. – Petrobras, following up on the release disclosed on 09/12/2018, informs that the General Arbitration Court of the Buenos Aires Stock Exchange (“Arbitral Tribunal”) acknowledged the withdrawal of the arbitration initiated against the company (and other legal entities and individuals) by Consumidores Financieros Asociación Civil para su Defensa (“Association”) .

The Arbitral Tribunal ruled on the withdrawal of the arbitration by the Association grounded on the lack of payment of arbitration fees within the established period.

An appeal filed by the Association is pending before the Argentinean Courts. If this decision becomes final, the arbitration will be dismissed.

This report on Form 6-K shall be deemed to be incorporated by reference into the Preliminary Prospectus Supplement, dated June 10, 2019, relating to the previously announced offer by Caixa Econômica Federal of common shares, including common shares represented by American depositary shares of Petróleo Brasileiro S.A. – Petrobras.

www.petrobras.com.br/ir

Contacts:

PETRÓLEO BRASILEIRO S.A. – PETROBRAS | Investor Relations Department | e-mail: petroinvest@petrobras.com.br

Av. República do Chile, 65 – 10th floor, 1002 – 20031-912 – Rio de Janeiro, RJ | Phone: 55 (21) 3224-1510 / 3224-9947

FORWARD-LOOKING STATEMENTS

This release includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, that are subject to risks and uncertainties. The forward-looking statements, which address the Company’s expected business and financial performance, among other matters, contain words such as “believe,” “expect,” “estimate,” “anticipate,” “optimistic,” “intend,” “plan,” “aim,” “will,” “may,” “should,” “could,” “would,” “likely,” and similar expressions. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date on which they are made. There is no assurance that the expected events, trends or results will actually occur. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information or future events or for any other reason.

The Company’s actual results could differ materially from those expressed or forecast in any forward-looking statements as a result of a variety of assumptions and factors. These factors include, but are not limited to, the following: (i) failure to comply with laws or regulations, including fraudulent activity, corruption, and bribery; (ii) the outcome of ongoing corruption investigations and any new facts or information that may arise in relation to the “Lava Jato Operation”; (iii) the effectiveness of the Company’s risk management policies and procedures, including operational risk; and (iv) litigation, such as class actions or proceedings brought by governmental and regulatory agencies. A description of other factors can be found in the Company’s Annual Report on Form 20-F for the year ended December 31, 2018, and the Company’s other filings with the U.S. Securities and Exchange Commission.