Petrobras - Petroleo Brasileiro SA 6-K/A, filed Sep 4, 2020

UNITEDSTATES

SECURITIESAND EXCHANGE COMMISSION

Washington,D.C. 20549

FORM6-K/A

Reportof Foreign Private Issuer

Pursuantto Rule 13a-16 or 15d-16

ofthe Securities Exchange Act of 1934

Forthe month of September, 2020

CommissionFile Number 1-15106

PETRÓLEOBRASILEIRO S.A.—PETROBRAS

(Exactname of registrant as specified in its charter)

BrazilianPetroleum Corporation—PETROBRAS

(Translationof Registrant’s name into English)

AvenidaRepública do Chile, 65

20031-912- Rio de Janeiro, RJ

FederativeRepublic of Brazil

(Addressof principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F  ☒            Form 40-F  ☐

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

Yes  ☐            No  ☒

EXPLANATORY NOTE

Petrobras is amending its report on Form 6-K furnished to the Securities and Exchange Commission on July 31, 2020 (File/Film Number: 001-15106 / 201063901) (the “Original 6-K”) solely for the purpose of adding Exhibit 101, which contains Interactive Data File disclosure in accordance with Rule 405 of Regulation S-T. Except as described above, this amendment does not amend any information set forth in the Original 6-K.

Exhibit Index

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.

Date: September 2, 2020.