Company: PBR
Filing Date: 2025-08-26
Form Type: 6-K/A
Source: 0001292814-25-003156
Chunk: 0

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-08-26
Form: 6-K/A
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K/A

Report of Foreign Private
Issuer
Pursuant to Rule 13a-16 or 15d-16 of the

Securities Exchange
Act of 1934

For the month of August, 2025

June 30, 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>

<div align='center'>EXPLANATORY NOTE</div>

Petrobras is amending its report on Form 6-K furnished to the Securities and Exchange Commission on August 8, 2025 (File/Film Number: 001-15106 / 251196802) (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.

Unaudited Condensed

Consolidated Interim

Financial Statements

PETRÓLEO BRASILEIRO S.A. – PETROBRAS

As of June 30, 2025, with the independent registered public accounting firm review report

INDEX

Petróleo Brasileiro S.A. – Petrobras

| Unaudited Condensed Consolidated Statements of Financial Position                    |  3 |
| Unaudited Condensed Consolidated Statements of Income                                |  4 |
|