Mr. Robert Bose reports

SINTANA ENERGY INC. PROVIDES RULE 2.9 ANNOUNCEMENT

On Dec. 8, 2025, Sintana Energy Inc. issued a total of 936,666 new common shares pursuant to the exercise of options. In accordance with Rule 2.9 of the City Code on Takeovers and Mergers, Sintana confirms that, as at the date of this announcement, it has in issue and admitted to listing on TSX Venture Exchange 381,112,211 common shares.

The international securities identification number (ISIN) of the common shares is CA82938H1073.

About Sintana Energy Inc.

The company is engaged in petroleum and natural gas exploration and development activities in five large, highly prospective, onshore and offshore petroleum exploration licences in Namibia as well as in Colombia's Magdalena basin. Sintana's exploration strategy is to acquire, explore, develop and produce superior-quality assets with substantial value-added potential.