VISTA GOLD CORP

A registered Shareholder may revoke a proxy by delivering an instrument in writing executed by such registered Shareholder (or by the registered Shareholder’s legal representative or trustee in bankruptcy or, where the registered Shareholder is a corporation, by a duly authorized person on behalf of the corporation or by the authorized representative appointed for the corporation) either to the registered office of the Corporation at Suite 1200, 200 Burrard Street, Vancouver, British Columbia, Canada, V6C 3L6 Attention: James Cantwell or to 8310 S. Valley Highway, Suite 300, Englewood, Colorado, USA, 80112 Attention: Pamela Solly at any time up to and including 10:00 a.m., PDT, on April 24, 2026, or no later than 48 hours before any adjournment or postponement of the Meeting or to the Chair of the Meeting prior to commencement of the Meeting or any adjournment or postponement thereof. A registered Shareholder may also revoke a proxy in any other manner permitted by law including by attending the meeting and voting in person or delivering a new Form of Proxy to the registered office of the Corporation or the transfer agent in accordance with the instructions and within the deadline set out in the Notice of Meeting.