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
November, 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 enters into agreement
to acquire 100% of Logum
—
Rio de Janeiro, November 12, 2026 –
Petróleo Brasileiro S.A. – Petrobras informs that it has entered into an agreement to acquire the remaining 70% stake in
Logum Logística S.A. (Logum), currently held by Raízen Energia S.A. (30%), Copersucar S.A. (30%) and Uniduto Logística
S.A. (10%). Petrobras already holds the other 30% stake in Logum and, upon completion of the transaction, will hold 100% of the company.
The total acquisition price will be R$
620 million, payable in three installments as follows: R$ 300 million at closing; R$ 160 million after 12 months; and R$ 160 million after
24 months. The amounts are subject to the price adjustments set forth in the agreement.
The acquisition offers attractive economic
and financial conditions for Petrobras, considering the growth of the ethanol market, particularly the expansion of corn ethanol production
in Brazil’s Center-West region. The transaction positions Petrobras in the country’s main ethanol logistics corridor.
The transaction also generates significant
operational synergies by enabling the integration of Logum’s pipeline network into the Petrobras System, with the potential to create
additional value from the company’s logistics assets. Logum’s infrastructure connects major production hubs in Brazil to Petrobras’
logistics network and the Ilha d’Água port terminal.
The project is aligned with Petrobras’
Business Plan, which provides for expansion into renewable and low-carbon energy businesses, contributing to the profitable diversification
of the company’s portfolio. Pipeline transportation stands out for its logistics efficiency and lower emissions intensity. By way
of comparison, transporting 1 million cubic meters per year by pipeline is equivalent to removing approximately 80 trucks from the roads
each day. During the 2025–2026 harvest, Logum transported approximately 5 million cubic meters of products.
Completion of the transaction is subject
to the satisfaction of the conditions set forth in the purchase and sale agreement, including approval by Brazil’s Administrative
Council for Economic Defense (CADE).
About Logum
Logum is a privately held corporation
headquartered in Rio de Janeiro, Brazil. Its corporate purpose includes the transportation, handling and storage of ethanol, petroleum
products and other biofuels.
The company operates a pipeline network
of more than 1,000 km and terminals in Uberaba (Minas Gerais), Ribeirão Preto (São Paulo) and Paulínia (São
Paulo), which receive ethanol from production facilities across the country. The biofuel is transported by pipeline to distribution hubs
in Barueri, Guarulhos, São Caetano do Sul and São José dos Campos (São Paulo state), and Duque de Caxias (Rio
de Janeiro state), as well as to the Ilha d’Água maritime terminal (Rio de Janeiro state), where it is loaded onto tankers
for coastal shipping and export.
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: November 12, 2026
PETRÓLEO BRASILEIRO S.A–PETROBRAS
By: /s/ Fernando Sabbi Melgarejo
______________________________
Fernando Sabbi Melgarejo
Chief Financial Officer and Investor Relations
Officer