PRIO Announces Installation License for Wahoo Field

September 15, 2025 – PRIO S.A. (“Company” or “PRIO”) (B3: PRIO3), following best corporate governance practices, informs its shareholders and the market in general that, on this date, the Brazilian Institute of the Environment and Natural Renewable Resources (“Ibama”) has granted the Installation License (“LI”) of the Wahoo Field Production Development System and interconnection of the wells to the Frade FPSO.

Thus, the Company will immediately begin subsea construction activities and the tieback to the FPSO, having already contracted and notified the vessel responsible for laying the rigid pipeline, which is expected to arrive in October. 

PRIO estimates first oil between March and April 2026, with four producing wells. The injector wells will be drilled and connected subsequently. The total development cost is estimated at US$ 870 million, after schedule and scope changes throughout the project’s planning and execution. PRIO will keep the market informed of the project’s execution.