Petrobras (NYSE: PBR) chairman quits board effective immediately

Rhea-AI Filing Summary

Petróleo Brasileiro S.A. – Petrobras reports that Mr. Pietro Adamo Sampaio Mendes has resigned, effective immediately, as Chairman and member of its Board of Directors, citing new professional challenges. He expressed gratitude to fellow Board members, the Executive Board led by CEO Magda Chambriard, and Petrobras teams, and wished them success.

Under Paragraph 2 of Article 18 of Petrobras’ Bylaws, the Board of Directors may itself elect a new Chairman to fill the vacancy, with that mandate lasting until the next General Shareholder Meeting. The company states it will keep the market informed about developments related to this leadership change.

Insights

Corporate governance analyst

Petrobras’ board chairman resigns immediately; board to appoint interim successor.

Petrobras discloses the immediate resignation of Mr. Pietro Adamo Sampaio Mendes as Chairman and member of the Board of Directors, attributed to new professional challenges. This is a clear governance change at the board level but does not, in the provided text, alter strategy or operations.

The company’s Bylaws allow the Board itself to elect a replacement Chairman to serve until the next General Shareholder Meeting, providing an internal mechanism to maintain board leadership. The notice that Petrobras will keep the market informed signals an intent to communicate future steps around this transition.

From an investor perspective, this is a leadership change at the oversight level rather than a detailed strategic update. Future disclosures around the choice of new Chairman and any stated priorities could further clarify governance direction, but such details are not included in the provided information.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 6-K: How Foreign Companies Report to the SEC →

Accepted by SEC EDGAR 08/20/2025 - 05:27 PM Learn about SEC filing dates

FAQ

What did Petrobras (PBR) announce in this Form 6-K?

Petrobras announced that Pietro Adamo Sampaio Mendes resigned, effective immediately, from his roles as Chairman and member of the Board of Directors, and that the company will keep the market informed about this matter.

Why did Petrobras’ board chairman Pietro Adamo Sampaio Mendes resign?

Petrobras states that Mr. Pietro Adamo Sampaio Mendes resigned from his positions as Chairman and board member due to new professional challenges.

How will Petrobras (PBR) choose a new chairman of the board?

According to Paragraph 2 of Article 18 of Petrobras’ Bylaws, the Board of Directors itself may elect a replacement Chairman in the event of a vacancy.

How long will Petrobras’ new chairman of the board serve once elected?

The filing states that any replacement Chairman elected by the Board of Directors will serve until the next General Shareholder Meeting.

Did Petrobras mention its CEO in this leadership update?

Yes. In his farewell message, Mr. Mendes thanked the members of the Executive Board led by CEO Magda Chambriard for their collaboration during his tenure.

How does Petrobras plan to update investors on the chairman transition?

Petrobras states that it will keep the market informed regarding developments related to the vacancy and replacement of the Chairman of the Board of Directors.

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 August, 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____

Petrobras informs about the Chairman of the Board of Directors

—

Rio de Janeiro, August 20, 2025 – Petróleo Brasileiro S.A. – Petrobras, following up on the statement disclosed on December 16, 2024, announces that it has received today the resignation, effective immediately, of the Chairman of the company's Board of Directors, Mr. Pietro Adamo Sampaio Mendes, from his positions as Chairman and member of the Board of Directors due to new professional challenges.

Upon his resignation, Mr. Pietro Adamo Sampaio Mendes expressed his gratitude to his fellow Board members, the members of the Executive Board led by CEO Magda Chambriard, and Petrobras' teams for their collaboration during his tenure as Chairman of the Board. He also wished everyone success in the journey ahead.

In accordance with Paragraph 2 of Article 18 of the company’s Bylaws, the Board of Directors itself may elect a replacement for the Chairman in the event of a vacancy. This election will remain valid until the next General Shareholder Meeting.

Petrobras will keep the market informed on this matter.

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: August 20, 2025

PETRÓLEO BRASILEIRO S.A–PETROBRAS

By: /s/ Fernando Sabbi Melgarejo

______________________________

Fernando Sabbi Melgarejo

Chief Financial Officer and Investor Relations Officer