Company: PBR
Filing Date: 2025-12-01
Form Type: 6-K
Source: 0001292814-25-004126
Chunk: 1

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-12-01
Form: 6-K
Chunk 1
---
 under the AIP, as provided for in Law 12,351/2010. |

With the addendum, resulting from the
completion of the first redetermination process of the Tupi Shared Reservoir, Petrobras' participation in the Reservoir increases to 67.457%.

The table below shows the previous and
new participation percentages for the parties:

| Parties                     | Tupi Participation Shares until 11/30/2025 | Tupi Participation Shares from 12/01/2025 |
| Petrobras (Operator)        | 67.216%                                    | 67.457%                                   |
| Shell Brasil Petróleo Ltda. | 23.024%                                    | 22.650%                                   |
| Petrogal Brasil S.A.        | 9.209%                                     | 9.060%                                    |
| Pré-Sal Petróleo - PPSA     | 0.551%                                     | 0.833%                                    |

As a result of the changes in participation
shares, the companies are committed to carrying out financial compensation for the expenses incurred and revenues related to the volumes
produced up to the effective date of this AIP addendum, in accordance with the applicable Expenses and Volumes Equalization Agreements
(AEGV).

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.

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.

The amounts are currently being calculated
by the parties, and the