Petrobras (NYSE: PBR) hits hydrocarbons in ultra-deep Amazon-margin well

Q: What did Petrobras (PBR) announce in its August 2026 Form 6-K?

Petrobras announced the identification of hydrocarbons in the Morpho exploratory well in Block FZA-M-59 , in the Foz do Amazonas Basin offshore Amapá. Operations and evaluation are still ongoing, so this is an early-stage exploration result.

Q: Where is Petrobras’s new Morpho well (PBR) located and how deep is it?

The Morpho well is located about 175 km off the coast of Amapá in Brazil’s Equatorial Margin, in ultra-deep waters with a water depth of 2,886 meters . It lies within Block FZA-M-59 in the Foz do Amazonas Basin.

Q: What interest does Petrobras (PBR) hold in Block FZA-M-59?

Petrobras holds a 100% participating interest and is the operator of Block FZA-M-59. The block was acquired under the concession regime in ANP’s 11th Licensing Round, which was held in 2013 .

Q: How did Petrobras (PBR) identify hydrocarbons in the Morpho well?

Petrobras identified hydrocarbons through wireline logs and rock indications in the Morpho well. The company states that exploratory evaluation continues, with operations conducted safely and with respect for the environment and people.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

6-K

Rhea-AI Filing Summary

Petróleo Brasileiro S.A. – Petrobras reports a new hydrocarbon presence in an exploratory ultra-deepwater well in Block FZA-M-59, in the Foz do Amazonas Basin on Brazil's Equatorial Margin. The Morpho well (1-BRSA-1405-APS) lies about 175 km off the Amapá coast, in 2,886 meters of water. The hydrocarbon-bearing interval was identified using wireline logs and rock evidence, and drilling and evaluation activities are still ongoing.

Petrobras operates Block FZA-M-59 with a 100% participating interest, under a concession acquired in ANP’s 11th Licensing Round in 2013. The company states that activities in this block align with its strategy of replenishing oil and gas reserves in frontier areas to support Brazil’s energy demand during a just energy transition, while emphasizing safe operations and respect for the environment and people.

Key Figures

Distance from Amapá coast: 175 km Water depth at Morpho well: 2,886 meters Participating interest in Block FZA-M-59: 100% +2 more

5 metrics

Distance from Amapá coast 175 km Location of the Morpho exploratory well offshore the State of Amapá

Water depth at Morpho well 2,886 meters Ultra-deepwater depth where the Morpho well is being drilled

Participating interest in Block FZA-M-59 100% Petrobras is the operator and sole interest holder in the block

ANP Licensing Round 11th Licensing Round in 2013 Round under which Block FZA-M-59 was acquired under the concession regime

Month of report August 2026 Period covered by the Form 6-K foreign issuer report

Key Terms

Equatorial Margin, wireline logs, concession regime, Licensing Round, +1 more

5 terms

Equatorial Margin technical

"within the Foz do Amazonas Basin in Brazil's Equatorial Margin"

wireline logs technical

"The hydrocarbon-bearing interval was identified through wireline logs and rock indications"

Wireline logs are detailed records of the underground rock and fluid properties collected by lowering measurement tools on a cable into an oil or gas well. They work like a medical scan for a borehole, showing layers, rock quality, and where oil or gas may sit, which helps estimate how much can be produced and how costly it will be. Investors use wireline logs to judge reserve size, drilling risk and the likely future cash flow from a well.

concession regime regulatory

"The block was acquired under the concession regime in ANP's 11th Licensing Round"

Licensing Round regulatory

"in ANP's 11th Licensing Round, held in 2013"

frontier areas technical

"through exploration in frontier areas, supporting Brazil's energy demand"

FAQ

What did Petrobras (PBR) announce in its August 2026 Form 6-K?

Petrobras announced the identification of hydrocarbons in the Morpho exploratory well in Block FZA-M-59, in the Foz do Amazonas Basin offshore Amapá. Operations and evaluation are still ongoing, so this is an early-stage exploration result.

Where is Petrobras’s new Morpho well (PBR) located and how deep is it?

The Morpho well is located about 175 km off the coast of Amapá in Brazil’s Equatorial Margin, in ultra-deep waters with a water depth of 2,886 meters. It lies within Block FZA-M-59 in the Foz do Amazonas Basin.

What interest does Petrobras (PBR) hold in Block FZA-M-59?

Petrobras holds a 100% participating interest and is the operator of Block FZA-M-59. The block was acquired under the concession regime in ANP’s 11th Licensing Round, which was held in 2013.

How did Petrobras (PBR) identify hydrocarbons in the Morpho well?

Petrobras identified hydrocarbons through wireline logs and rock indications in the Morpho well. The company states that exploratory evaluation continues, with operations conducted safely and with respect for the environment and people.

How does the Amapá discovery fit Petrobras’s (PBR) strategy?

Petrobras says activities in Block FZA-M-59 align with its strategy to replenish oil and gas reserves through exploration in frontier areas, supporting Brazil’s energy demand during a just energy transition.

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

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Form 6-K: How Foreign Companies Report to the SEC →

Available on EDGAR 08/17/2026 - 06:03 AM Accepted by SEC EDGAR 08/14/2026 - 06:15 PM

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 August, 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____

New Hydrocarbon Discovery in Ultra-Deep Waters off the Coast of Amapá
—

Rio de Janeiro, August 14th, 2026 – Petróleo Brasileiro S.A. – Petrobras has identified the presence of hydrocarbons in an exploratory well currently being drilled in Block FZA-M-59, located in deep waters offshore Amapá, within the Foz do Amazonas Basin in Brazil's Equatorial Margin. The Morpho well (1-BRSA-1405-APS) is located approximately 175 km off the coast of the State of Amapá, in a water depth of 2,886 meters.

The hydrocarbon-bearing interval was identified through wireline logs and rock indications. Operation remains ongoing to continue the exploratory evaluation, carried out safely and with respect for the environment and people.

The Activities in Block FZA-M-59, located in the Foz do Amazonas sedimentary basin, are aligned with Petrobras' strategy to replenish oil and gas reserves through exploration in frontier areas, supporting Brazil's energy demand during the just energy transition.

Petrobras is the operator of Block FZA-M-59 and holds a 100% participating interest in the area. The block was acquired under the concession regime in ANP's 11th Licensing Round, held in 2013.

www.petrobras.com.br/ri

Para mais informações:

PETRÓLEO BRASILEIRO S.A. – PETROBRAS | Relações com Investidores

E-mail: petroinvest@petrobras.com.br/acionistas@petrobras.com.br

Av. Henrique Valadares 28 – 9º andar – 20031-030 – Rio de Janeiro, RJ

Tel.: 55 (21) 3224-1510/9947

Este documento pode conter previsões segundo o significado da Seção 27A da Lei de Valores Mobiliários de 1933, conforme alterada (Lei de Valores Mobiliários) e Seção 21E da lei de Negociação de Valores Mobiliários de 1934 conforme alterada (Lei de Negociação) que refletem apenas expectativas dos administradores da Companhia. Os termos: “antecipa”, “acredita”, “espera”, “prevê”, “pretende”, “planeja”, “projeta”, “objetiva”, “deverá”, bem como outros termos similares, visam a identificar tais previsões, as quais, evidentemente, envolvem riscos ou incertezas, previstos ou não, pela Companhia. Portanto, os resultados futuros das operações da Companhia podem diferir das atuais expectativas, e, o leitor não deve se basear exclusivamente nas informações aqui contidas.

The map indicates the location of the discovery on the Coast of Amapá.

www.petrobras.com.br/ri

Para mais informações:

PETRÓLEO BRASILEIRO S.A. – PETROBRAS | Relações com Investidores

E-mail: petroinvest@petrobras.com.br/acionistas@petrobras.com.br

Av. Henrique Valadares 28 – 9º andar – 20031-030 – Rio de Janeiro, RJ

Tel.: 55 (21) 3224-1510/9947

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: August 14, 2026

PETRÓLEO BRASILEIRO S.A–PETROBRAS

By: /s/ Fernando Sabbi Melgarejo

______________________________

Fernando Sabbi Melgarejo

Chief Financial Officer and Investor Relations Officer

Source: View Original Filing on SEC EDGAR