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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Item 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES
Documents filed as part of this report on Form 10-K or incorporated by reference:
(1) Our financial statements can be found in Item 8 of this report.
(2) Financial Statement Schedules (omitted because they are either not required, are not applicable, or the required information is disclosed in the notes to the financial statements or related notes).
(3) The following exhibits are filed with this Annual Report on Form 10-K or incorporated by reference:
EXHIBITS
| ExhibitNumber | Description of Exhibits |
|---|---|
| 3.1* | Articles of Incorporation of Montgomery Mines Inc, October 30, 1935 (incorporated by reference to prior filing) |
| 3.2* | Articles of Amendment, Montgomery Mines Inc., April 12, 1948 (incorporated by reference) |
| 3.3* | Articles of Amendment, Montgomery Mines Inc., February 6, 1970 (incorporated by reference) |
| 3.4* | Articles of Amendment, Montgomery Mines Inc., April 10, 1978 (incorporated by reference) |
| 3.5* | Articles of Amendment, Thunder Mountain Gold, August 26, 1985 (incorporated by reference) |
| 3.6* | Articles of Amendment, Thunder Mountain Gold, October 17, 1985 (incorporated by reference) |
| 3.7* | Articles of Incorporation, Thunder Mountain Gold Inc. (Nevada), December 11, 2007 (incorporated by reference) |
| 3.8* | Bylaws, Montgomery Mines Inc. (incorporated by reference) |
| 3.9** | Amended and Restated Bylaws of Thunder Mountain Gold Inc. |
| 10.1* | Agreement and Plan of Merger, Thunder Mountain Gold (Nevada) |
| 10.2* | Form of Subscription Agreement related to 2025 Private Placement (incorporated by reference) |
| 10.3* | Form of Warrant Agreement related to 2025 Private Placement (incorporated by reference) |
| 10. 4* | Option Agreement dated January 14, 2025 (incorporated by reference to the Company's Form 8-K filed on September 8, 2025. |
| 10.5* | Amendment to Option Agreement dated September 4, 2025 (incorporated by reference to the Company's Form 8-K filed on September 8, 2025). |
| 21.1** | Subsidiaries of the Registrant |
| 23.1** | Consent of Qualified Person for Technical Report Summary of the South Mountain Project |
| 31.1** | Certification of Chief Executive Officer of Periodic Report pursuant to Rule 13a-14(a) and Rule 15d-14(a)(Section 302 of the Sarbanes- Oxley Act of 2002). |
| 31.2** | Certification of Chief Financial Officer of Periodic Report pursuant to Rule 13a-14(a) and Rule 15d-14(a)(Section 302 of the Sarbanes- Oxley Act of 2002). |
| 32.1** | Certificate of Principal Executive Officer pursuant to 18 U.S.C. 1350 (Section 906 of the Sarbanes-Oxley Act of 2002). |
| 32.2** | Certificate of Chief Financial Officer pursuant to 18 U.S.C. 1350 (Section 906 of the Sarbanes-Oxley Act of 2002). |
| 95** | Mine safety information listed in Section 1503 of the Dodd-Frank Act. |
| 96.1* | Initial Assessment Technical Report Summary on the South Mountain Project, Owyhee County, Idaho USA S-K 1300 Report (incorporated by reference to Exhibit 96.1 to the Company's Form 10-K/A for the year ended December 31, 2023 filed with the SEC on September 11, 2024) |
| 101** | The following financial information from our Annual Report on Form 10-K for the year ended December 31, 2025, formatted in Extensible Business Reporting Language (XBRL): (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Operations, (iii) the Consolidated Statements of Cash Flows, (iv) the Consolidated Statements of Changes in Stockholders' Equity (Deficit) and (v) Notes to Financial Statements |
| 101.INS** | Inline XBRL Instance Document-the instance document does not appear in the Interactive Data File as its XBRL tags are embedded within the Inline XBRL document |
| 101.SCH** | Inline XBRL Taxonomy Extension Schema Document |
| 101.CAL** | Inline XBRL Taxonomy Extension Calculation Linkbase Document |
| 101.DEF** | Inline XBRL Taxonomy Extension Definition Linkbase Document |
| 101.LAB** | Inline XBRL Taxonomy Extension Label Linkbase Document |
| 101.PRE** | Inline XBRL Taxonomy Extension Presentation Linkbase Document |
| 104 | Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) |
- Incorporated by Reference.
** Filed herewith.
DOCUMENTS INCORPORATED BY REFERENCE
None
SIGNATURES
Pursuant to the requirements of Section 143 of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf of the undersigned, thereunto duly authorized.
THUNDER MOUNTAIN GOLD, INC.
By /s/ Eric T. Jones
Eric T. Jones
President, Director and Chief Executive Officer
Date: March 31, 2026
Pursuant to the requirements of the Securities Act of 1934 this report signed below by the following person on behalf of the Registrant and in the capacities on the date indicated.
By /s/ Eric T. Jones
Eric T. Jones
Principal Financial Officer
Date: March 31, 2026
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