Audited Annual Results for the Year Ended December 31, 2025

TORONTO, ON / ACCESS Newswire / April 30, 2026 / Sintana Energy Inc. (TSX-V:SEI)(AIM:SEI)(OTCQX:SEUSF) ("Sintana" or the "Company") is pleased to announce its audited Annual Results for the year ended December 31, 2025. The 2025 Annual Report is available on the Company's website: https://sintanaenergy.com/ For further information, please contact: Sintana Energy Inc Robert Bose, Chief Executive Officer Eytan Uliel, President Tel: +44 (0)7 747 845 987 Zeus - Nomad and Joint Broker Antonio Bossi / Darshan Patel / George Duxberry Simon Johnson (Broking) Tel: +44 (0) 20 3829 5000 Cavendish Capital Markets Limited - Joint Broker Neil McDonald / Derrick Lee / Pearl Kellie Tel: +44 (0) 20 3493 8000 Jonathan Paterson - Investor Relations jonathan.paterson@harbor-access.com Tel: +1 475 477 9401 CAMARCO - Financial PR Billy Clegg / Georgia Edmonds / Sam Morris Tel: +44 (0) 20 3757 4980 About Sintana Energy Sintana Energy is an Atlantic Margin-focused oil and gas company, holding interests in a diverse portfolio of high-impact assets that spans the Southern Atlantic conjugate margin.