Company: PBR
Filing Date: 2025-05-29
Form Type: 6-K
Source: 0001292814-25-002267
Chunk: 0

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-05-29
Form: 6-K
Chunk 0
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<div align='center'>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 of the

Securities Exchange
Act of 1934

For the month of May, 2025

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 – 9th floor
20231-030 – 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 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____</div>

Petrobras approves public offering of debentures—

Rio de Janeiro, May 28, 2025– Petróleo Brasileiro S.A. – Petrobras announces that its Executive Board, in a meeting held on this date, pursuant
to item VII of Article 34 of its Bylaws, approved the 8 (eighth) issuance of simple debentures, not convertible into shares,
in up to three series, unsecured, in the total amount of R$ 3,000,000,000.00 (three billion reais) (“Debenture Issuance”),
which will be the subject of a public distribution offering, pursuant to the Brazilian Securities and Exchange Commission (“CVM”)
Resolution No. 160, dated July 13, 2022; Law No. 12,431, dated June 24, 2011 (“Law No. 12,431”); Decree No. 11,964, dated
March 26, 2024 (“Decree No. 11,964”); Law No. 6,385,