Petrobras approves joining new R$1/L diesel subsidy

Petrobras’s board approved joining a new Brazilian diesel subsidy program that adds to an existing subsidy, with cumulative per-liter benefits and contingent on final regulations.

Rhea-AI Filing Summary

PETROBRAS - PETROLEO BRASILEIRO SA (PBR) reports that its Board of Directors approved participation in a new Brazilian economic subsidy program for producers and importers of diesel fuel and blending components, created by Provisional Measure No. 1,391 of September 11, 2026.

The program, regulated by Ministry of Finance Ordinance No. 2,813, provides a R$1.00 per liter subsidy on road-use Grade “A” diesel fuel for 30 days, with the possibility of a further 30-day extension. This participation is in addition to an existing subsidy of R$1.12 per liter under Provisional Measure No. 1,363/2026, and the benefits of both subsidies are cumulative.

Execution of Petrobras’s participation agreement depends on the publication and review of additional regulations under Provisional Measure No. 1,391/2026. The company states that joining this voluntary program aligns with its commercial strategy focused on market share, refining optimization, and sustainable profitability, while limiting immediate pass-through of temporary international price and exchange-rate volatility.

Key Figures

New diesel subsidy amount: R$1.00 per liter New subsidy initial duration: 30 days Existing diesel subsidy amount: R$1.12 per liter +3 more

6 metrics

New diesel subsidy amount R$1.00 per liter Subsidy on road-use Grade “A” diesel fuel under Provisional Measure No. 1,391/2026

New subsidy initial duration 30 days Period set by Ministry of Finance Ordinance No. 2,813, with possible 30-day extension

Existing diesel subsidy amount R$1.12 per liter Grade “A” diesel fuel subsidy under Provisional Measure No. 1,363/2026, cumulative with new program

Provisional Measure No. 1,391 date September 11, 2026 Date of Provisional Measure establishing the new economic subsidy program

Ordinance No. 2,813 publication date September 16, 2026 Publication date of Ministry of Finance ordinance setting subsidy level and duration

Board approval date September 18, 2026 Date Petrobras’s Board of Directors approved participation in the new subsidy program

Key Terms

economic subsidy program, Provisional Measure, Ministry of Finance Ordinance, road-use Grade “A” diesel fuel, +1 more

5 terms

economic subsidy program financial

"approved the Company’s participation in the economic subsidy program for producers"

Provisional Measure regulatory

"established by Provisional Measure No. 1,391, dated September 11, 2026"

Ministry of Finance Ordinance regulatory

"including Ministry of Finance Ordinance No. 2,813, published on September 16, 2026"

road-use Grade “A” diesel fuel technical

"subsidy at R$1.00 per liter of road-use Grade “A” diesel fuel"

sustainable profitability financial

"focused on market share, the optimization of its refining assets, and the pursuit of sustainable profitability"

FAQ

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

What did Petrobras (PBR) announce in this Form 6-K?

Petrobras announced that its Board of Directors approved participation in a new economic subsidy program for producers and importers of diesel fuel, established by Provisional Measure No. 1,391/2026, in addition to an existing diesel subsidy program under Provisional Measure No. 1,363/2026.

What is the subsidy level and duration in Petrobras’s new diesel program?

The new program sets a subsidy of R$1.00 per liter of road-use Grade “A” diesel fuel for 30 days, as provided by Ministry of Finance Ordinance No. 2,813. This 30-day period may be extended for an additional period of the same duration.

How does the new Petrobras diesel subsidy relate to the existing one?

Petrobras states that participation in the new subsidy program does not affect its right to receive subsidies already owed under Provisional Measure No. 1,363/2026, which provides R$1.12 per liter of Grade “A” diesel; the benefits of both programs are cumulative.

Is Petrobras’s participation in the new subsidy program already effective?

No. Petrobras explains that effective execution of the participation agreement is subject to the publication and review of regulations under Provisional Measure No. 1,391/2026, which are required for implementation of the economic subsidy.

How does the subsidy program fit Petrobras (PBR)’s commercial strategy?

Petrobras says participation in the voluntary subsidy program is consistent with its interests and that it maintains a commercial strategy focused on market share, refining optimization, and sustainable profitability, while avoiding immediate pass-through of temporary international price and exchange-rate volatility.

What key dates are associated with Petrobras’s new diesel subsidy program?

The subsidy program was established by Provisional Measure No. 1,391 on September 11, 2026. Ministry of Finance Ordinance No. 2,813 was published on September 16, 2026. Petrobras’s Board approved participation on September 18, 2026, and the announcement is dated September 19, 2026.

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

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Available on EDGAR 09/21/2026 - 01:17 PM Accepted by SEC EDGAR 09/21/2026 - 01:17 PM 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 September, 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 Approval to Join New Economic Subsidy Program

—

Rio de Janeiro, September 19, 2026 – Petróleo Brasileiro S.A. – Petrobras announces that its Board of Directors, at a meeting held this Friday, September 18, approved the Company’s participation in the economic subsidy program for producers and importers of diesel fuel and its blending components, established by Provisional Measure No. 1,391, dated September 11, 2026.

The Company’s participation will be governed by the applicable regulations, including Ministry of Finance Ordinance No. 2,813, published on September 16, 2026, which sets the subsidy at R$1.00 per liter of road-use Grade “A” diesel fuel for a period of 30 days, which may be extended for an additional period of the same duration.

Participation in the economic subsidy program established by Provisional Measure No. 1,391/2026 does not affect the right to receive economic subsidies already owed to producers or importers, nor does it revoke the Company’s participation in the subsidy authorized by Provisional Measure No. 1,363/2026, in the amount of R$1.12 per liter of Grade “A” diesel fuel. Accordingly, the benefits provided under both programs are cumulative.

Given the voluntary nature of the program and its potential benefits, the Company understands that participation is consistent with its interests. The effective execution of the participation agreement will be subject to the publication and review of the regulations provided for under Provisional Measure No. 1,391/2026, which are required for the implementation of the economic subsidy.

Petrobras emphasizes that it maintains its commercial strategy, which is focused on market share, the optimization of its refining assets, and the pursuit of sustainable profitability, while avoiding the immediate pass-through to domestic prices of temporary volatility in international commodity prices and exchange rates.

The Company remains committed to acting responsibly, consistently, and transparently, while preserving the flexibility required to implement its commercial strategy and generate long-term value.

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: September 21, 2026

PETRÓLEO BRASILEIRO S.A–PETROBRAS

By: /s/ Fernando Sabbi Melgarejo

______________________________

Fernando Sabbi Melgarejo

Chief Financial Officer and Investor Relations Officer