Petrobras acquires 21 blocks; R$3.22B due in 2026

The awards add more than 18,000 km² to PETROBRAS’ exploration portfolio, with R$3,219,251,245.60 in signature bonuses due by December 30, 2026.

Rhea-AI Filing Summary

PETROBRAS (PBR) acquired 21 exploration blocks through Brazil’s 4th Production Sharing Permanent Offer Cycle and 6th Concession Permanent Offer Cycle, adding more than 18,000 km² to its exploration portfolio.

It holds a 100% participating interest in the two production-sharing blocks and the 12 Campos Basin concession blocks. In seven Ceará Basin concession blocks, PETROBRAS holds 70% and QatarEnergy Brasil Ltda. holds 30%; PETROBRAS is the operator.

PETROBRAS is to pay total signature bonuses of R$3,219,251,245.60 by December 30, 2026 for the 21 awarded blocks. The Federal Government profit-oil shares are 30.00% for Azurita and 15.27% for Cruzeiro do Sul. The concession-cycle minimum work obligations are 780 WUs in Ceará and 4,003 WUs in Campos.

1 point · 0 major

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How this balance works

Rhea-AI gives every point it takes from this document a weight. Minor counts 1, Moderate 3 and Major 9, so one Major point outweighs several Minor ones. The bar adds up the weights on each side, and when neither side holds more than 65% of the total the balance reads Mixed.

It reads the document as published, with the same rules for every company, and it does not look at what the market expected or at how the stock traded, so a point can be objectively good on a day the stock falls.

Rhea-AI Sentiment measures something else, the tone of the wording.

How the balance worksHow Sentiment works

0 major · 0 points

How the balance works

Positive

• Moderate pointExploration portfolio added more than 18,000 km² across 21 blocks.

Negative

• None.

Filing Explained

For the awarded production-sharing blocks, the government’s profit-oil share alone determined the winning bids; signature bonuses were fixed in the tender terms, so Petrobras’s bonus commitment was not the auction’s competitive bid variable.

Key Figures

Awarded blocks: 21 blocks Exploration portfolio addition: More than 18,000 km² Total signature bonuses: R$3,219,251,245.60 +5 more

8 metrics

Awarded blocks 21 blocks Across the 4th Production Sharing and 6th Concession Permanent Offer Cycles.

Exploration portfolio addition More than 18,000 km² Area added through the awarded blocks.

Total signature bonuses R$3,219,251,245.60 To be paid by December 30, 2026 for the 21 awarded blocks.

Federal Government profit-oil share 30.00% Azurita block.

Federal Government profit-oil share 15.27% Cruzeiro do Sul block.

PETROBRAS participating interest 100% Azurita, Cruzeiro do Sul, and 12 Campos Basin concession blocks.

PETROBRAS participating interest 70% Seven Ceará Basin concession blocks; QatarEnergy Brasil Ltda. holds 30%.

Minimum Work Obligation 780 WUs (Ceará); 4,003 WUs (Campos) Concession Permanent Offer Cycle.

Key Terms

Minimum Work Obligation (MWO), Work Units (WUs), Government Profit Oil Share, signature bonus, +1 more

5 terms

Minimum Work Obligation (MWO) technical

"the Minimum Work Obligation (MWO) to be carried out in each block"

Work Units (WUs) technical

"expressed in Work Units (WUs)"

Government Profit Oil Share regulatory

"Government Profit Oil Share"

signature bonus financial

"the signature bonus amount had been previously established"

participating interest financial

"both with a 100% participating interest"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many blocks did PBR acquire in Brazil’s 2026 ANP offer cycles?

PETROBRAS acquired 21 blocks, adding more than 18,000 km² to its exploration portfolio.

How much will PBR pay in signature bonuses?

PETROBRAS is to pay R$3,219,251,245.60 by December 30, 2026 for the 21 blocks awarded across both cycles.

What are PETROBRAS’ interests in the awarded blocks?

PETROBRAS holds a 100% participating interest in the two production-sharing blocks and 12 Campos Basin concession blocks. In seven Ceará Basin blocks, PETROBRAS holds 70% and QatarEnergy Brasil Ltda. holds 30%; PETROBRAS is the operator.

How were bids evaluated in the ANP offer cycles?

For production-sharing blocks, the Federal Government profit-oil allocation percentage was the sole criterion, with signature bonuses established in the bidding terms. Concession bids were evaluated using the signature bonus and Minimum Work Obligation in Work Units.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/08/2026 - 08:02 AM Accepted by SEC EDGAR 10/08/2026 - 08:02 AM Learn about SEC filing dates

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, 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 Results of ANP Bidding Round

—

Rio de Janeiro, October 8, 2026 – Petróleo Brasileiro S.A. (Petrobras) announces that it participated in the 4th Production Sharing Permanent Offer Cycle and the 6th Concession Permanent Offer Cycle promoted by Brazil’s National Agency for Petroleum, Natural Gas and Biofuels (ANP).

In the 4th Production Sharing Permanent Offer Cycle, the company acquired the Azurita block in the Campos Basin and the Cruzeiro do Sul block in the Santos Basin, both with a 100% participating interest.

The percentage of profit oil to be allocated to the Federal Government was the sole criterion adopted by the ANP to determine the winning bid, while the signature bonus amount had been previously established in the bidding terms.

The table below summarizes Petrobras' results in the ANP's 4th Production Sharing Permanent Offer Cycle:

Sedimentary Basin	Block	Consortium Composition	Government Profit Oil Share	Petrobras Share of Signature Bonus (R$)
Campos	Azurita	Petrobras* 100%	30.00%	98,365,884.50
Santos	Cruzeiro  do Sul	Petrobras* 100%	15.27%	134,035,000.00
Total	-	-	-	232,400,884.50

*Operator

In the 6th Concession Permanent Offer Cycle, Petrobras acquired the blocks C-M-111, C-M-159, C-M-113, C-M-115, C-M-161, C-M-163, C-M-165, C-M-214, C-M-216, C-M-281, C-M-283, and C-M-352 in the Campos Basin, all with a 100% participating interest.

In the Ceará Basin, Petrobras acquired, as operator, the blocks CE-M-471, CE-M-473, CE-M-475, CE-M-477, CE-M-537, CE-M-539, and CE-M-665, with a 70% participating interest, in partnership with QatarEnergy Brasil Ltda. (30%).

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.

 

In the 6th Concession Permanent Offer Cycle, the evaluation criteria consisted of the signature bonus and the Minimum Work Obligation (MWO) to be carried out in each block, expressed in Work Units (WUs), which encompasses the activities to be performed during the exploration phase.

The table below summarizes Petrobras' results in the ANP's 6th Concession Permanent Offer Cycle:

Sedimentary Basin	Blocks	Consortium Composition	Total MWO (WUs)	Petrobras Share of Signature Bonus (R$)
Ceará	CE-M-471, CE-M-473, CE-M-475, CE-M-477, CE-M-537, CE-M-539 and CE-M-665	Petrobras* 70% QatarEnergy 30%	780	R$ 19,922,000.00
Campos	C-M-111, C-M-159, C-M-214, C-M-113, C-M-115, C-M-161, C-M-163, C-M-165, C-M-216, C-M-281, C-M-283 and C-M-352	Petrobras* 100%	4003	R$ 2,966,928,361.10
Total	-	-	-	R$ 2,986,850,361.10

*Operator

The total amount of signature bonuses to be paid by the company by December 30, 2026, in connection with the 21 blocks awarded is R$ 3,219,251,245.60, considering both bidding cycles.

Participation in these Permanent Offer Cycles is aligned with the company’s long-term strategy and strengthens Petrobras’ position as the leading operator of ultra-deepwater oil fields, enhancing reserve replacement opportunities for the company’s future.

Petrobras participated selectively in the auctions, securing the addition of more than 18,000 km² to its exploration portfolio.

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: October 8, 2026

PETRÓLEO BRASILEIRO S.A–PETROBRAS

By: /s/ Fernando Sabbi Melgarejo

______________________________

Fernando Sabbi Melgarejo

Chief Financial Officer and Investor Relations Officer