Company: PBR
Filing Date: 2025-10-20
Form Type: 6-K
Source: 0001292814-25-003571
Chunk: 0

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-10-20
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 October, 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 obtains operating license for exploratory research in Amapá Deep Waters

—

Rio de Janeiro, October 20, 2025 –Petróleo Brasileiro S.A. – Petrobras informs that it received today the environmental license from Ibama to drill an
exploratory well in block FZA-M-059, located in deep waters off Amapá, 500 km from the mouth of the Amazon River and 175 km from
the coast, on the Brazilian Equatorial Margin.

The drill rig is already at the well site,
and drilling is expected to start immediately, with an estimated duration of five months. Through this exploratory activity, the company
aims to gather additional geological data and assess whether there is oil and gas in the area at an economic scale. There is no oil production
at this stage.

Petrobras has met all requirements set
forth by Ibama, fully adhering to the environmental licensing process. As a final stage of evaluation, in August the company conducted
an on-site simulation, called Pre-Operational Assessment (APO), through which Ibama verified