VANCOUVER, BC, December XX, 2025 - Mirasol Resources Ltd. (TSX-V: MRZ) (OTC: MRZLF) (the “Company” or “Mirasol”) announced today that the Board of Directors has approved the grant of 1,981,594 incentive stock options (“Options”) to employees, officers, directors and consultants of the Company under the Company’s long-term incentive plan.

The Options entitle the holders to purchase the equivalent number of common shares of the Company at a price of $0.55 per common share for a period of five years from the date of grant. The options will vest as follows: 30% on the date of grant, followed by an additional 35% on each of the six and twelve month anniversaries of the date of grant.

All grants of Options are subject to the Company’s Stock Option Plan which was approved by shareholders at Mirasol’s annual and special meeting of shareholders on July 23, 2025.

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About Mirasol Resources Ltd

Mirasol is a strategically positioned exploration company with over 20 years of operating, permitting and community relations experience in the mineral rich regions of Argentina and Chile. Mirasol is currently self-funding exploration at the flagship Sobek Copper-Gold project located in the Vicuña Copper-Gold-Silver District of northeast Chile and continues to advance a strong pipeline of highly prospective early and mid-stage projects.

For further information, contact:

Tim Heenan, President & CEO

or

Troy Shultz, Vice President Investor Relations

Tel: +1 (604) 602-9989

Email: contact@mirasolresources.com

Website: www.mirasolresources.com

Forward Looking Statements: The information in this news release contains forward looking statements that are subject to a number of known and unknown risks, uncertainties and other factors that may cause actual results to differ materially from those anticipated in our forward-looking statements. Factors that could cause such differences include: changes in world commodity markets, equity markets, costs and supply of materials relevant to the mining industry, change in government and changes to regulations affecting the mining industry and to policies linked to pandemics, social and environmental related matters. Forward-looking statements in this release include statements regarding future exploration programs, operation plans, geological interpretations, mineral tenure issues and mineral recovery processes. Although we believe the expectations reflected in our forward-looking statements are reasonable, results may vary, and we cannot guarantee future results, levels of activity, performance or achievements. Mirasol disclaims any obligations to update or revise any forward-looking statements whether as a result of new information, future events or otherwise, except as may be required by applicable law.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.