PRIO Operational Data Sept. 2025

Oct. 6 – PRIO S.A. (“Company” or “PRIO”) (B3: PRIO3), following best practices incorporate governance and transparency, informs its preliminary and non-audited Operational Data for the month of September.

Key:

(1) At the Polvo and Tubarão Martelo cluster, the workover of TBMT-6H well was completed on September 15, and the well returned to production.

(2) At the Albacora Leste field, production was impacted by a compressor failure, with normalization expected in October. (3) At the Peregrino field, production was temporarily affected by the FPSO shutdown following an ANP audit, as disclosed in the Material Fact dated August 18, 2025. PRIO, as a consortium partner and future operator, continues to support Equinor (the current operator of the field) in meeting the regulatory requirements, for the resumption of production in the coming days.