New Petrobras (NYSE: PBR) board nominee eyed for chairman role

Rhea-AI Filing Summary

Petróleo Brasileiro S.A. – Petrobras reports that its Controlling Shareholder, the Brazilian Federal Government, has nominated Guilherme Santos Mello to join the company’s Board of Directors, replacing Bruno Moretti. The Controlling Shareholder has also asked that he be considered for the role of Chairman at the Annual General Meeting scheduled for April 16, 2026.

These nominations will undergo Petrobras’ internal governance review, including checks on legal, management, and integrity requirements. The company highlights Mello’s academic background in economics and his experience as a professor and as Secretary of Economic Policy at Brazil’s Ministry of Finance, as well as his board roles at BNDES, PPSA, and previously BB Seguridade.

Insights

Corporate governance analyst

Petrobras’ controlling shareholder proposes a new director who may become board chairman, pending governance review and AGM decision.

The Brazilian Federal Government, as Petrobras’ Controlling Shareholder, has nominated Guilherme Santos Mello to the Board of Directors and requested his consideration as Chairman. This underscores the state’s active role in setting Petrobras’ strategic leadership through board appointments.

The nominations must pass Petrobras’ internal policy checks on legal, management, and integrity criteria, creating a defined review step before the Annual General Meeting on April 16, 2026. Mello’s senior policy role at the Ministry of Finance and existing chairmanship at BNDES suggest continuity of close alignment between Petrobras and Brazilian economic policy, although the filing does not detail any specific strategic changes.

Key Figures

AGM date: April 16, 2026 Filing announcement date: April 6, 2026 Prior board service period: 2023–2025

3 metrics

AGM date April 16, 2026 Annual General Meeting where Mello’s board and chairman nominations will be considered

Filing announcement date April 6, 2026 Date Petrobras announced the Controlling Shareholder’s nominations

Prior board service period 2023–2025 Years Mello served on the Board of Directors of BB Seguridade

Key Terms

Controlling Shareholder, Board of Directors, Annual General Meeting (AGM), Policy for the Nomination of Senior Management Members, +1 more

5 terms

Controlling Shareholder financial

"its Controlling Shareholder (the Federal Government), through the Ministry of Management"

A controlling shareholder is a person or entity that holds enough voting power in a company—often a majority of votes or decisive influence through agreements—to determine its board, strategy and major decisions. For investors this matters because that control shapes corporate direction, risk and who benefits from deals; like a driver steering a car, a controlling shareholder can speed up or block changes, which can affect minority shareholders’ returns and the company’s value.

Board of Directors financial

"to the position of Member of the Company’s Board of Directors, replacing Mr. Bruno"

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

Annual General Meeting (AGM) financial

"in view of the convening of the Company’s Annual General Meeting (AGM) scheduled"

Policy for the Nomination of Senior Management Members financial

"in accordance with Petrobras’ internal governance procedures and its Policy for the Nomination of Senior Management Members"

Secretary of Economic Policy financial

"He currently serves as Secretary of Economic Policy at Brazil’s Ministry of Finance"

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FAQ

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

Petrobras announced that its Controlling Shareholder, the Brazilian Federal Government, nominated Guilherme Santos Mello to its Board of Directors, replacing Bruno Moretti, and requested that he also be considered for the position of Chairman at the upcoming Annual General Meeting.

Who is Guilherme Santos Mello, the new Petrobras (PBR) board nominee?

Guilherme Santos Mello holds a Ph.D. in Economic Science and is a tenured professor at Unicamp’s Institute of Economics. He serves as Secretary of Economic Policy at Brazil’s Ministry of Finance, chairs BNDES’ board, and sits on the board of Pré-Sal Petróleo S.A. (PPSA).

Will Guilherme Santos Mello automatically become Chairman of Petrobras’ Board?

No. The Controlling Shareholder requested that Mello’s nomination be considered for Chairman at Petrobras’ Annual General Meeting on April 16, 2026. His appointment as Chairman remains subject to shareholder decision and internal assessments of legal, management, and integrity requirements.

What internal reviews will Petrobras apply to the new board nomination?

Petrobras states that Guilherme Santos Mello’s nominations will be reviewed under its internal governance procedures and its Policy for the Nomination of Senior Management Members, including assessments of applicable legal, management, and integrity requirements before any final board or chairman appointment.

When is Petrobras’ next Annual General Meeting mentioned in this filing?

The filing notes that Petrobras’ Annual General Meeting is scheduled for April 16, 2026. At this meeting, shareholders are expected to consider the nomination of Guilherme Santos Mello to the Board of Directors and his potential election as Chairman, subject to prior governance assessments.

What other board experience does Guilherme Santos Mello have relevant to Petrobras (PBR)?

Mello is Chairman of the Board of Directors of BNDES and a member of the board of Pré-Sal Petróleo S.A. (PPSA). He also previously served on the Board of Directors of BB Seguridade between 2023 and 2025, adding experience across major Brazilian financial and energy-related institutions.

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 April, 2026

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 Announces Receipt of Nomination from the Controlling Shareholder for a Candidate to the Board of Directors

—

Rio de Janeiro, April 6, 2026 – Petróleo Brasileiro S.A. – Petrobras announces that its Controlling Shareholder (the Federal Government), through the Ministry of Management and Innovation in Public Services, has nominated Mr. Guilherme Santos Mello to the position of Member of the Company’s Board of Directors, replacing Mr. Bruno Moretti. The Controlling Shareholder has also requested that Mr. Guilherme Santos Mello’s nomination be considered for the position of Chairman of Petrobras’ Board of Directors, in view of the convening of the Company’s Annual General Meeting (AGM) scheduled for April 16, 2026.

In accordance with Petrobras’ internal governance procedures and its Policy for the Nomination of Senior Management Members, these nominations will be submitted to an assessment of the applicable legal, management, and integrity requirements.

Mr. Guilherme Santos Mello holds a Ph.D. in Economic Science from Unicamp (2013), a Master’s degree in Political Economy from PUC-SP (2009), and undergraduate degrees in Social Sciences (USP, 2008) and Economics (PUC-SP, 2006). He is a tenured professor at the Institute of Economics at Unicamp (IE-UNICAMP), where he serves as the coordinator of the postgraduate program in Economic Development.

He currently serves as Secretary of Economic Policy at Brazil’s Ministry of Finance, Chairman of the Board of Directors of BNDES, and a member of the Board of Directors of Empresa Brasileira de Administração de Petróleo e Gás Natural S.A. – Pré-Sal Petróleo S.A. (PPSA). He also served on the Board of Directors of BB Seguridade between 2023 and 2025.

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: April 6, 2026

PETRÓLEO BRASILEIRO S.A–PETROBRAS

By: /s/ Fernando Sabbi Melgarejo

______________________________

Fernando Sabbi Melgarejo

Chief Financial Officer and Investor Relations Officer