Petrobras participation in a new exploration block in São Tomé and Príncipe

Rio de Janeiro, April 17, 2026 – Petróleo Brasileiro S.A. – Petrobras announces that it has signed an agreement to acquire an interest and assume operatorship of Block 3, offshore São Tomé and Príncipe, Africa, from Oranto Petroleum Limited (Oranto).

The current consortium is composed of Oranto, the current operator with a 90% interest, and the National Petroleum Agency of São Tomé and Príncipe (ANP-STP), with 10%. Petrobras is acquiring a 75% interest and, upon completion of the transaction, the consortium will be composed of Petrobras (operator, 75%), Oranto (15%), and ANP-STP (10%).

Since 2024, Petrobras has resumed its activities on the African continent and already holds interests in blocks in São Tomé and Príncipe.

This transaction strengthens exploratory activities on the African continent, with the purpose of portfolio diversification, and is aligned with the company’s long-term strategy, aiming to replenish oil and gas reserves through exploration of new frontiers and partnership operations.

The acquisition of the block in São Tomé and Príncipe followed the company’s internal governance procedures and is in line with its Business Plan 2026-2030.

The completion of the transaction is subject to the fulfillment of precedent conditions, including applicable governmental and regulatory approvals in São Tomé and Príncipe. Any material developments will be promptly disclosed to the market.