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
UNDER THE SECURITIES
EXCHANGE ACT OF 1934
For the month of September,
2025
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)
Avenida Henrique Valadares,
28
20241-030 - Rio de Janeiro, RJ
Federative Republic of 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.
Form 20-F x Form
40-F ¨
This
report on Form 6-K shall be deemed to be incorporated by reference into the Registration Statement on Form F-3 of Petróleo
Brasileiro S.A. — Petrobras (No. 333-283981) and Petrobras Global Finance B.V. – PGF (No. 333-283981-01) and the related
prospectus supplement dated September 3, 2025.
Exhibit 1.1 — Underwriting Agreement
SIGNATURE
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.
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PETRÓLEO BRASILEIRO S.A--PETROBRAS |
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By: |
/s/ Andre Gameiro Rua |
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Name: Andre Gameiro Rua |
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Title: Attorney-in-fact |
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By: |
/s/ Lucas Tavares de Mello |
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Name: Lucas Tavares de Mello |
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Title: Attorney-in-fact |
Date: September 3, 2025
