# EDGAR Filing Document

**Accession Number:** 0001119639
**File Stem:** 0001292814-25-003293
**Filing Date:** 2025-9
**Character Count:** 4821
**Document Hash:** d5ed95c4a0644933be8d473999dd6bf8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001292814-25-003293.hdr.sgml**: 20250915

**ACCESSION NUMBER**: 0001292814-25-003293

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20250915

**DATE AS OF CHANGE**: 20250912

**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:** 251312704

**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 September, 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____

![](pbr202509126k_001.jpg)

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***Petrobras announces participation in exploratory block in São Tomé and Príncipe***

***—***

**Rio de Janeiro, September 12, 2025 –** Petróleo Brasileiro S.A. – Petrobras informs that it has concluded the acquisition of a 27.5% stake in Block 4, located in São Tomé and Príncipe, Africa. With this acquisition, Petrobras joins the consortium of the aforementioned block, which includes Shell, the operator of the asset (30%), as well as Galp (27.5%) and ANP-STP (15%).

Petrobras has been active in São Tomé and Príncipe since February 2024, when it acquired a 45% stake in Blocks 10 and 13, and a 25% stake in Block 11.

This transaction strengthens Petrobras' exploratory activities on the African continent, with the purpose of portfolio diversification, and is aligned with the company's long-term strategy, aiming to replenish oil and gas reserves through exploration of new frontiers and partnership operations.

The acquisition of Block 4 in São Tomé and Príncipe complied with all the company's internal governance procedures and is in accordance with the 2025-2029 Strategic Plan.

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**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.

**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: September 12, 2025

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

______________________________

Fernando Sabbi Melgarejo

Chief Financial Officer and Investor Relations Officer