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Artemis Gold Inc. (TSXV:ARTG) ("Artemis Gold" or the "Company") and Vista Gold Corp. (TSX:VGZ) ("Vista Gold") are pleased to announce they entered into a definitive agreement on September 20, 2026 (the "Arrangement Agreement") whereby Artemis Gold will acquire all of the issued and outstanding shares of Vista Gold, owner of the Mt Todd gold project in Northern Territory, Australia, pursuant to a court-approved plan of arrangement (the "Transaction"). Artemis Gold currently holds 4.95% of the shares outstanding of Vista Gold.

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Under the terms of the Transaction, Vista Gold shareholders will receive 0.0966 common shares of Artemis Gold for each Vista Gold common share (the "Exchange Ratio"). The Exchange Ratio implies consideration of US$2.83 per Vista Gold common share, a total transaction value of approximately US$427 million on a 100% basis, and represents a premium of 29% based on the 20-day volume-weighted average prices of Artemis Gold on the TSX Venture Exchange (the "TSXV") and Vista Gold on the NYSE American as at September 18, 2026.

The consideration is payable in Artemis Gold common shares. No cash consideration is payable, and no new debt is being incurred. Upon completion of the Transaction, it is expected that existing Artemis Gold and Vista Gold shareholders will own approximately 95% and 5%1 of the pro forma company, respectively.