MATERIAL FACT - ALBACORA DIVESTMENT PROCESS

Praia de Botafogo, 370 • 13º andar

Botafogo • 22250-040 • Rio de Janeiro/RJ

[phone]

petroriosa.com.br

MATERIAL FACT

ALBACORA DIVESTMENT PROCESS

Rio de Janeiro, November 5, 2021 - Petro Rio S.A. ("Company" or "PetroRio") (B3: PRIO3), in accordance with art. 26 of the Novo Mercado Regulation, informs the market and its shareholders that the consortiums in which it participates have been chosen to begin exclusive negotiations of the final terms of the Sales and Purchase Agreements and other transaction documents in the divestment process of Albacora and Albacora Leste fields conducted by Petróleo Brasileiro S.A. ("Petrobras"), with the possibility of a final bid, in case of material changes in the documents.

About PetroRio

PetroRio is one of the largest independent companies in the oil and gas production in Brazil. The Company´s corporate culture seeks to increase production through the acquisition of new production assets, the redevelopment of assets, increased operational efficiency and reduction of production costs and corporate expenses. PetroRio's main objective is to create value for its shareholders with growing financial discipline and preserving its liquidity, with full respect for safety and the environment. For further information, please visit the Company's website: www.petroriosa.com.br.

Disclaimer

This news release contains forward-looking statements. All statements other than statements of historical fact contained in this news release are forward-looking statements, including, without limitation, statements regarding our drilling and seismic plans, operating costs, acquisitions of equipment, expectations of finding oil, the quality of oil we expect to produce and our other plans and objectives. Readers can identify many of these statements by looking for words such as "expects", "believe", "hope" and "will" and similar words or the negative thereof. Although management believes that the expectations represented in such forward- looking statements are reasonable, there can be no assurance that such expectations will prove to be correct. By their nature, forward-looking statements require us to make assumptions and, accordingly, forward-looking statements are subject to inherent risks and uncertainties. We caution readers of this news release not to place undue reliance on our forward-looking statements, since a number of factors may cause actual future circumstances, results, conditions, actions or events to differ materially from the plans, expectations, estimates or intentions expressed in the forward-looking statements and the assumptions underlying the forward-looking statements.

Praia de Botafogo, 370 • 13º andar • Botafogo • 22250-040 • Rio de Janeiro/RJ

[phone]

petroriosa.com.br