JOINT FILING AGREEMENT
Exhibit A
The undersigned agree that this Schedule 13G Amendment No. 2 dated August 13, 2025 relating to the Common Shares without par value, of Vista Gold Corp. shall be filed on behalf of the undersigned.
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By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ | |
| Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ | |
| Title: Managing Member |
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PALMEDO HOLDINGS LLLP
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ | |
| Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ | |
| Title: General Partner |
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SUN VALLEY GOLD MASTER FUND, LTD.
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ | |
| Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ | |
| Title: Director |
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By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ |