Thunder Mountain Gold, Inc. — Proxy Solicitation & Information Statement 2025

Dec 23, 2025

Thunder Mountain Gold, Inc.

VOTE

Using a black ink pen, mark your votes with an X as shown in this example. Please do not write outside the designated areas.

☑

2026 Annual Meeting Proxy Card

1234 5678 9012 345

▼ IF VOTING BY MAIL, SIGN, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE. ▼

A Proposals – The Board of Directors recommends a vote FOR all nominees and FOR Proposal 2.

1. Election of Directors:

01 - Doug Glaspey
☐ For Withhold
☐ 02 - Eric T. Jones
☐ For Withhold
☐ 03 - Ralph Noyes
☐ For Withhold

04 - James A. Sabala
☐ For Withhold
☐ 03 - Ralph Noyes
☐ For Withhold

1. TO RATIFY AND APPROVE THE SELECTION OF ASSURE CPA, LLC AS INDEPENDENT AUDITORS FOR THE FISCAL YEAR ENDING DECEMBER 31, 2026

For Against Abstain
☐ 01

1. TO TRANSACT SUCH OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE MEETING AND ANY ADJOURNMENT THEREOF

5 Authorized Signatures – This section must be completed for your vote to count. Please date and sign below.

Please sign exactly as name(s) appears hereon. Joint owners should each sign. When signing as attorney, executor, administrator, corporate officer, trustee, guardian, or custodian, please give full title.

Date (mm/dd/yyyy) – Please print date below.

Signature 1 – Please keep signature within the box.

Signature 2 – Please keep signature within the box.

C 1234567890
JNT
41BV 668809

047VIA

A-2

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2026 Virtual Meeting
2026 Annual Meeting of Thunder Mountain Gold Inc. Shareholders
January 28, 2026, 12:00 P.M. Local Time

The 2026 Annual Meeting of Shareholders of Thunder Mountain Gold Inc. will be held on January 28, 2026, 12:00 P.M. Mountain Time virtually via the Internet at meetnow.global/MGS4F4Y.

To access the virtual meeting, you must have the information that is printed in the shaded bar located on the reverse side of this form.

Small steps make an impact.
Help the environment by consenting to receive electronic delivery, sign up at https://www.investorvote.com/THMG

▼ IF VOTING BY MAIL, SIGN, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE.▼

Proxy – Thunder Mountain Gold, Inc.

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Notice of 2026 Annual Meeting of Stockholders

Proxy Solicited by Board of Directors for Virtual Meeting – January 28, 2026, 12:00 PM Mountain Time

Thunder Mountain Gold Inc. and their Board of Directors, or any of them, each with the power of substitution, are hereby authorized to represent and vote the shares of the undersigned, with all the powers which the undersigned would possess if personally present, at the Virtual Meeting of Shareholders of Thunder Mountain Gold Inc. to be held on January 28, 2026, 12:00 P.M. Mountain Time or at any postponement or adjournment thereof.

Shares represented by this proxy will be voted by the stockholder. If no such directions are indicated, the Proxies will have authority to vote FOR the election of the Board of Directors and FOR item 2.

In their discretion, the Proxies are authorized to vote upon such other business as may properly come before the meeting.

(Items to be voted appear on reverse side)

Non-Voting Items

Change of Address – Please print new address below.

Comments – Please print your comments below.

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