Mr. Robert Bose reports

EXERCISE OF OPTIONS

Sintana Energy Inc. has received a notice of exercise in respect of stock options over 650,000 common shares of no par value each in the company. The options are being exercised by Sean Austin, the company's co-secretary and treasurer. Following the exercise of the options, Mr. Austin will hold a total of 8,575,000 shares in the company, or 1.54 per cent of the company's total issued shares. The options were exercisable at a price of 27 per share, and Mr. Austin has paid $175,000 to the company in respect of the exercise.

Total voting rights

Application has been made for admission to trading on the TSX Venture Exchange and AIM (Alternative Investment Market) of a total of 650,000 new common shares of no par value. Admission is expected on or about June 15, 2026. On admission, the new common shares will rank pari passu with the company's existing common shares. Following admission, the company's issued share capital will consist of 556,232,493 common shares, with each common share carrying the right to one vote. The company does not hold any common shares in treasury.

This figure of 556,232,493 common shares may therefore be used by shareholders in the company as the denominator for the calculations by which they will determine if they are required to notify their interest in or a change in their interest in the share capital of the company under the FCA's (Financial Conduct Authority) disclosure guidance and transparency rules.

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 on the TSX-V in Canada under the symbol SEI, in the United Kingdom on the LSE (London Stock Exchange) AIM under the symbol SEI and in the U.S. on the OTCQX under the symbol SEUSF.