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THUNDER MOUNTAIN GOLD INC

For the period ended Dec 31, 2025. Filed Mar 31, 2026.

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FY2025 · Filed Mar 31, 2026

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Contents

ITEM 3. -LEGAL PROCEEDINGS ITEM 4 -MINE SAFETY DISCLOSURES

Wright Geophysics also conducted a ground gravity survey and CSMAT over the pediment target area and this provided insight into the gravel-bedrock contact as well as defining the favorable structural setting within the buried bedrock. An untested drill target was identified under the gravel pediment along these structures, and the geophysics showed that the bedrock was within 500 feet of the surface, which is reasonable depth for exploration drilling and potential mining if a significant mineralization is encountered.

Present Condition, Work Completed and Exploration Plans

Other than the geophysical data described above, the Company has not performed any significant work at the Trout Creek Project since 2011. However, the Company may conduct further exploration on the Trout Creek Property in 2026. The Company continues to concentrate on advancing the South Mountain Project. There are no significant workings on the property, and the property is without known resources or reserves.

Permits and Facilities

There are no permits associated with this property, and there are no processing plants or other available facilities located on the property. There are currently no environmental permits required for exploration work on the property. In the future, a plan of operations may be required by the Bureau of Land Management to conduct exploration and sampling at the property.

Competition

We are an Exploration Stage Issuer. We compete with other mineral resource exploration and development companies for financing and for the acquisition of new mineral properties. Many of the mineral resource exploration and development companies with whom we compete have greater financial and technical resources than us. Accordingly, these competitors may be able to spend greater amounts on acquisitions of mineral properties of merit, on exploration of their mineral properties and on development of their mineral properties. In addition, they may be able to afford greater geological expertise in the targeting and exploration of mineral properties. This competition could result in competitors having mineral properties of greater quality and interest to prospective investors who may finance additional exploration and development. This competition could adversely impact on our ability to finance further exploration and to achieve the financing necessary for us to develop our mineral properties.

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