Company: PBR
Filing Date: 2025-10-27
Form Type: 6-K
Source: 0001292814-25-003631
Chunk: 0

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-10-27
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 October, 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'>3Q25 — P-78 Arrival at the Búzios Field in September 2025 Production and Sales Report 3Q25 I 2 Table of contents Highlights
3Q25 4 Our Operating Results 7 Exploration and Production 7 Refining, Transportation & Marketing 9 Gas and Low Carbon Energies 12
Atmospheric Emissions 14 Exhibits 16 EXHIBIT I - CONSOLIDATED SALES VOLUME 16 EXHIBIT II - NET IMPORTS AND EXPORTS 16 EXHIBIT III - OIL
EXPORTS (*) 17 EXHIBIT IV - OIL PRODUCTS EXPORTS (*) 17 Glossary 18 Production and Sales Report 3Q25 I 3 Disclaimer This report may contain
forward-looking statements about future events. Such forecasts reflect only the expectations of the company's management about future
economic conditions, as well as the company's industry, performance and financial results, among others. The terms "anticipates", "believes",
"expects", "predicts", "intends", "plans",