VISTA GOLD CORP

proxy statement in preliminary and definitive form . Promptly after filing the definitive proxy statement, Vista Gold will mail the definitive proxy statement and a proxy card to its shareholders . INVESTORS AND SECURITY HOLDERS OF VISTA GOLD ARE URGED TO READ ALL RELEVANT DOCUMENTS FILED WITH THE SEC, INCLUDING VISTA GOLD’S PROXY STATEMENT (WHEN THEY ARE AVAILABLE), BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED ARRANGEMENT AND THE PARTIES TO THE ARRANGEMENT AGREEMENT . Investors and security holders of Vista Gold are or will be able to obtain these documents (when they are available) free of charge from the SEC’s website at www . sec . gov or free of charge from Vista Gold on its website at https : //vistagold . com . Participants in the solicitation This communication does not constitute a solicitation of proxy, an offer to purchase or a solicitation of an offer to sell any securities . Artemis, Vista Gold and certain of their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from the security holders of Vista Gold in connection with the proposed Arrangement . Information regarding the interests of these directors and executive officers in the proposed Arrangement will be included in the definitive proxy statement referred to above . Security holders may also obtain information regarding the names, affiliations and interests of Artemis’ directors and executive officers in Artemis’ Notice of Meeting and Information Circular for the Annual General Meeting of Shareholders held on August 5 , 2026 , which is available at https : //www . artemisgoldinc . com/investors/agm - materials/ . Security holders may obtain information regarding the names, affiliations and interests of Vista Gold’s directors and executive officers in Vista Gold’s proxy statement in connection with its 2026