Company: PBR
Filing Date: 2025-09-05
Form Type: 424B2
Source: 0001104659-25-087755
Chunk: 8

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-09-05
Form: 424B2
Chunk 8
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oes;               |

| · | cybersecurity threats, breaches and disruptions; |

| · | global health crises, such as the COVID-19 pandemic; |

| · | the impact of expanded regional or global conflict,                                     
 including the conflict between Russia and Ukraine and the conflicts in the Middle East; |

| · | the cost and availability of adequate insurance 
 coverage;                                       |

| · | Petrobras’s ability to successfully implement                                             
 acquisitions, partnerships or asset sales under Petrobras’s portfolio management program; |

| · | Petrobras’s ability to successfully implement                                                                                          
 its Strategic Plan 2050 and Business Plan 2025-2029, whether those strategic and business plans remains in place, and the direction of 
 any subsequent strategic and business plans;                                                                                           |

| · | the outcome of ongoing corruption investigations                                                                                    
 and any new facts or information that may arise in relation to past investigations related to alleged irregularities or corruption; |

| · | the effectiveness of Petrobras’s risk management     
 policies and procedures, including operational risk; |

| · | potential changes to the composition of Petrobras’s 
 board of directors and management team; and         |

| · | litigation, such as class actions or enforcement                      
 or other proceedings brought by governmental and regulatory agencies. |

For additional information
on factors that could cause our actual results to differ from expectations reflected in forward-looking statements, please see “Risk
Factors” in this prospectus supplement and in documents incorporated by reference in this prospectus supplement and the accompanying
prospectus.

All forward-looking statements attributed to us
or a person acting on our behalf are expressly qualified in their entirety by this cautionary statement, and you should not place undue
reliance on any forward-looking statement included in this prospectus supplement or the accompanying prospectus. We undertake no obligation
to publicly update or revise any forward-looking statements, whether as a result of new information or future events or for any other
reason.

<div align='center'>S-4

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE</div>

Petrobras is incorporating
by reference into this prospectus supplement the following documents that it has filed with the U.S. Securities and Exchange Commission
(“SEC”):

| (1) | The Petrobras Annual Report on Form 20-F for the year ended December 31, 2024 filed with the SEC on April 3, 2025, film number 25810793 (the “2024 Form 20-F”). |

|