Company: PBR
Filing Date: 2025-10-28
Form Type: 6-K
Source: 0001292814-25-003641
Chunk: 1

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-10-28
Form: 6-K
Chunk 1
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 and the necessary approvals from regulatory bodies.

Búzios Field

The FPSO Almirante Tamandaré is part of the Búzios 7 Project, which comprises the sixth production system at Búzios to begin operations and will contribute to the field reaching 1 million barrels of oil per day by the end of this year. Soon, it is expected to become Petrobras’ largest production field.

The Búzios 7 Project, which includes the Almirante Tamandaré platform as well as all subsea infrastructure such as pipelines and wells, will receive this week the OTC Brasil Distinguished Achievement Award for Companies, granted by the Offshore Technology Conference, one of the most important global events focused on offshore oil and gas technology.

www.petrobras.com.br/ir

For more information:

PETRÓLEO BRASILEIRO S.A. – PETROBRAS | Investor Relations

Email: petroinvest@petrobras.com.br/acionistas@petrobras.com.br

Av. Henrique Valadares, 28 – 9th floor –
20231-030 – Rio de Janeiro, RJ.

Tel.: 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 Trading
Act of 1934, as amended (Trading 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,
future results of the Company's operations may differ from current expectations, and the reader should not rely solely on the information
included herein.

<div align='center'>SIGNATURES</div>

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: October 28, 2025

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

______________________________

Fernando Sabbi Melgarejo

Chief Financial