TORONTO, ON / ACCESS Newswire / August 20, 2026 / Sintana Energy Inc. (TSX-V:SEI)(AIM:SEI)(OTCQX:SEUSF) ("Sintana" or the "Company"), an international oil and gas upstream exploration company, is pleased to announce further to a previous announcement dated 20 January, 2026, the entry into definitive documentation providing for the acquisition of a 44% interest in Maravilla Oil and Gas (Pty) Ltd. ("Maravilla"), a privately held, Namibian company focused on high-impact opportunities in West Africa. Maravilla is indirectly controlled by Knowledge Katti, a Non-Executive Director of the Company.

Maravilla has assets in Namibia and is exploring additional opportunities in emerging frontier geographies regionally. It is the owner of an 80% controlling shareholding in Paragon Oil and Gas (Pty) Ltd. ("Paragon"), also a privately held, Namibian company which in turn owns a 100% operated interest in Petroleum Exploration License 37 ("PEL 37") located in the Walvis Basin, offshore Namibia. Sintana's investment in Maravilla provides an indirect 35% interest in PEL 37.

Key Investment Highlights

Strategic Partnership With Maravilla Opens Access and Creates Shared Resources

Sintana's investment in Maravilla provides resources to further develop, mature and refine opportunities including an inventory of prospects on PEL 37