Mr. Robert Bose reports

LATIN-AMERICA UPDATES

Sintana Energy Inc. has provided the following updates in relation to activities in Latin America.

Area OFF-1, offshore Uruguay: ANCAP, the Uruguayan state-owned energy company and regulator, has agreed to a suspension of the initial exploration subperiod of the Area OFF-1 block, offshore Uruguay, for one year, such that the first exploration subperiod will now expire on Aug. 23, 2027. The suspension was requested by Chevron Mexico Finance LLC, Sucursal Uruguay, operator of the block, in accordance with the provisions of the licence contract for Area OFF-1, given the length of time taken for environmental authorization of the Area OFF-1 3-D seismic acquisition campaign. As previously advised, following environmental authorization being obtained in early 2026, an initial season of seismic acquisition was completed prior to the end of April, 2026, with a second season scheduled to commence in Q4 2026. Acquisition, processing and interpretation of all of the planned 3-D seismic data over the block are considered essential data necessary to making an optimal exploration well drilling decision.

Offshore Argentina: On Feb. 14, 2025, Challenger Energy Group PLC, a member of the Sintana group of companies, submitted an expression of interest for the award of an offshore hydrocarbon exploration permit under national jurisdiction in the North Argentine basin (CAN-200), in accordance with the provisions of Article 46 of Law No. 17,319 of the Argentine Republic. On July 15, 2026, Decree 590/2026 was published in the Official Gazette of the Argentine Republic, which instructs the National Secretariat of Energy to call for an international public tender based on Challenger Energy's expression of interest, as a necessary precursor to the potential award of a permit. Challenger will proceed to participate in this process, in compliance with the provisions and timelines established by the Argentine law and authorities, and further updates will be provided as appropriate.

About Sintana Energy Inc.

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. The company's current portfolio is strategically positioned in the emerging frontier geographies of Namibia, Uruguay and Angola, with additional legacy assets in Colombia and the Bahamas. Led by an experienced team, Sintana Energy is partnered with major industry players and benefits from significant carry support on key licences across multiple jurisdictions. Sintana Energy is listed in Canada on the TSX Venture Exchange under the symbol SEI, in the United Kingdom on the London Stock Exchange (Alternative Investment Market) under the symbol SEI and in the United States on the OTCQX under the symbol SEUSF.

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