Company: PBR
Filing Date: 2025-06-16
Form Type: 6-K
Source: 0001292814-25-002424
Chunk: 0

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-06-16
Form: 6-K
Chunk 0
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<div align='center'>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 June, 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____</div>

Petrobras reports on the construction of RNEST's second train

—

Rio de Janeiro, June 16, 2025 –
Petróleo Brasileiro S.A. – Petrobras announces, following up on the release of June 29, 2023, that it has signed the first
three contracts with Consag Engenharia S.A., as a result of competitive bidding, for the completion of the construction of Train 2 of
the Abreu e Lima Refinery (RNEST), in Pernambuco. These contracts, amounting to approximately R$ 4.9 billion, include the implementation
of the Coking Unit (UCR), the Diesel Hydrotreating Unit (UHDT-D) and the Atmospheric Distillation Unit (UDA). The amount is already included
in the 2025-2029 Business Plan. The completion of the project will also include other service packages, which are currently being tendered.

The ongoing implementation of Train 2
at RNEST is based on a careful assessment of the project which confirmed its economic attractiveness, considering