PBR 6-K

UNITED STATES

SECURITIES AND EXCHANGECOMMISSION

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 ofNovember, 2025

Commission File Number1-15106

PETRÓLEO BRASILEIROS.A. – PETROBRAS

(Exact name of registrant as specified in its charter)

Brazilian PetroleumCorporation – PETROBRAS

(Translation of Registrant's name into English)

Avenida Henrique Valadares, 28 – 9th floor 20231-030 – Rio de Janeiro, RJFederative Republic of Brazil

(Address of 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 ___X___ 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___X____

Petrobras announces favorable decisionby the Superior Court of Justice***—***

**Rio de Janeiro, November 5, 2025 –**Petróleo Brasileiro S.A. – Petrobras, following up on its March 31, 2022, announcement to the market, announces that the Superior Court of Justice has decided, by majority vote, to uphold its appeal in the case against Paragon Offshore Nederland B.V., a former supplier of oil and gas exploration rigs, overturning the appealed decision and ordering a new trial in the Rio de Janeiro Court of Justice (TJ-RJ).

The estimated value of the lawsuit is R$ 2.9 billion, of which R$ 154 million has been provisioned.

Material facts regarding this case will be disclosed to the market in a timely manner.

www.petrobras.com.br/ri

For more information:

PETRÓLEO BRASILEIRO S.A. – PETROBRAS| Investor Relations

Email: [email protected]/[email protected]

Av. Henrique Valadares 28 – 9º andar – 20031-030 – Rio de Janeiro, RJ

Phone: 55 (21) 3224-1510/9947

This document may contain forecasts within the meaning of Section 27A of the Securities Act of 1933, as amended (Securities Act), and Section 21E of the Securities Exchange Act of 1934, as amended (Exchange Act) that reflect the expectations of the Company's officers. The terms “anticipates,” “believes,” “expects,” “predicts,” “intends,” “plans,” “projects,” “aims,” “should,” and similar terms, aim to identify such forecasts, which evidently involve risks or uncertainties, predicted or not by the Company. Therefore, the future results of the Company's operations may differ from current expectations, and the reader should not rely solely on the information contained herein.

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: November 5, 2025

PETRÓLEO BRASILEIRO S.A–PETROBRASBy: /s/ Fernando Sabbi Melgarejo

______________________________

Fernando Sabbi Melgarejo

Chief Financial Officer and Investor Relations Officer