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 o f the Securities Exchange Act of 1934 For the month of August, 2023 Commission File Number 1-15106 PETRÓLEO BRASILEIRO S.A. – PETROBRAS (Exact name of registrant as specified in its charter) Brazilian Petroleum Corporation – PETROBRAS (Translation of Registrant's name into English) Avenida Henrique Valadares, 28 – 19th floor 20231-030 – Rio de Janeiro, RJ Fede ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 for the fiscal year ended December 31, 2022 Commission File Number 001-15106 Petróleo Brasileiro S.A. — Petrobras (Exact name of registrant as specified in its charter) Brazilian Petroleum Corporation — Petrobras (Translation of registrant’s name into English) The Federative Republic of Brazil (Jurisdiction of incorporation or organization) Av ...

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 o f the Securities Exchange Act of 1934 For the month of March, 2023 Commission File Number 1-15106 PETRÓLEO BRASILEIRO S.A. – PETROBRAS (Exact name of registrant as specified in its charter) Brazilian Petroleum Corporation – PETROBRAS (Translation of Registrant's name into English) Avenida Henrique Valadares, 28 – 19th floor 20231-030 – Rio de Janeiro, RJ Feder ...