# EDGAR Filing Document

**Accession Number:** 0001119639
**File Stem:** 0001292814-25-004126
**Filing Date:** 2025-12
**Character Count:** 7137
**Document Hash:** d73da961cb8e762e13b2af4057291376
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001292814-25-004126.hdr.sgml**: 20251201

**ACCESSION NUMBER**: 0001292814-25-004126

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20251201

**DATE AS OF CHANGE**: 20251201

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PETROBRAS - PETROLEO BRASILEIRO SA
- **CENTRAL INDEX KEY:** 0001119639
- **STANDARD INDUSTRIAL CLASSIFICATION:** CRUDE PETROLEUM & NATURAL GAS [1311]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** D5
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-15106
- **FILM NUMBER:** 251537147

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** AVENIDA REPUBLICA DO CHILE 65
- **CITY:** RIO DE JANERIO RJ BR
- **PROVINCE COUNTRY:** D5
- **BUSINESS PHONE:** 55-21-534-4477

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** AVENIDA REPUBLICA DO CHILE 65
- **CITY:** RIO DE JANERIO RJ BR
- **PROVINCE COUNTRY:** D5

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BRAZILIAN PETROLEUM CORP
- **DATE OF NAME CHANGE:** 20000717

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 6-K**

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

Securities Exchange Act of 1934

**For the month of December, 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 <br> 20231-030 – Rio de Janeiro, RJ<br> 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____

![](pbr202512016k_001.jpg)

 ****

***Petrobras announces approval of redetermination of the Tupi Shared Reservoir***

***—***

**Rio de Janeiro, December 1, 2025 –** Petróleo Brasileiro S.A. – Petrobras announces that it has been notified by Brazil's National Agency of Petroleum, Natural Gas and Biofuels (ANP) regarding the approval of the addendum to the Production Individualization Agreement (AIP) of the Tupi Shared Reservoir, located in the Santos Basin, which becomes effective as of today.

The Tupi Shared Reservoir comprises:

&nbsp;&nbsp;&nbsp;&nbsp;· The BM-S-11 Concession Contract (Tupi field), operated
by Petrobras (65%), in partnership with Shell (25%) and Petrogal (10%);

&nbsp;&nbsp;&nbsp;&nbsp;· The Tupi South Block, under the Transfer of Rights
Agreement (Tupi South field), operated by Petrobras, which holds 100% of the participation; and

&nbsp;&nbsp;&nbsp;&nbsp;· The Non-Contracted Area, owned by the Brazilian Federal
Government, represented by Pré-Sal Petróleo – PPSA 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:

---

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

![](pbr202512016k_001.jpg)

The amounts are currently being calculated by the parties, and the amount to be received by Petrobras will be recognized in the financial statements for 4Q25, with cash inflows expected in 1Q26.

It should be clarified that the Tupi AIP does not include the reservoir known as Iracema, which remains with the same participation shares as the BM-S-11 consortium.

**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.

**SIGNATURES**

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: December 1, 2025

**PETRÓLEO BRASILEIRO S.A–PETROBRAS<br>** <br> By: /s/ Fernando Sabbi Melgarejo

______________________________

Fernando Sabbi Melgarejo

Chief Financial Officer and Investor Relations Officer