---
schema_version: "secwatch.filing_event.v1"
accession: "0001062993-26-003106"
form_type: "8-K"
ticker: "THMG"
cik: "0000711034"
company_name: "THUNDER MOUNTAIN GOLD INC"
filed_at: "2026-06-08T21:28:02+00:00"
generated_at: "2026-06-08T21:30:16.823303+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Thunder Mountain Gold auditor resigns after merger; Sadler Gibb appointed

## Summary
- Assure CPA, LLC resigned as auditor on June 3, 2026, after merging into Sadler Gibb & Associates LLC.
- No disagreements or reportable events occurred during fiscal years 2024/2025 or the interim period through May 31, 2026.
- Prior audit reports for 2024 and 2025 each contained a going-concern explanatory paragraph.
- Audit Committee approved Sadler Gibb & Associates LLC as the new independent auditor on June 4, 2026.

## SEC filing metadata
- accession: 0001062993-26-003106
- form_type: 8-K
- ticker: THMG
- cik: 0000711034
- company_name: THUNDER MOUNTAIN GOLD INC
- filed_at: 2026-06-08T21:28:02+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/711034/000106299326003106/0001062993-26-003106-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/711034/000106299326003106/form8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001062993-26-003106
- JSON: https://secwatch.observer/filing/0001062993-26-003106.json
- Plain text: https://secwatch.observer/filing/0001062993-26-003106.txt

## Key facts
- Auditor Changes
  Assure CPA, LLC resigned as auditor of THUNDER MOUNTAIN GOLD INC.
  - Action: resignation
  - Auditor: Assure CPA, LLC
  - Successor: Sadler Gibb & Associates LLC
  source text: Assure CPA, LLC, which served as the independent registered public accounting firm of Thunder Mountain Gold Inc. (the "Company"), merged into Sadler Gibb & Associates LLC pursuant to an asset purchase agreement. As a result of the transaction, Assure CPA, LLC ceased operations as a public accounting firm, and resigned as the Company's independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/711034/000106299326003106/0001062993-26-003106-index.htm
- Auditor Changes
  THUNDER MOUNTAIN GOLD INC engaged Sadler Gibb & Associates LLC as its auditor.
  - Action: engagement
  - Auditor: Sadler Gibb & Associates LLC
  source text: On June 4, 2026, the Audit Committee approved the engagement of Sadler Gibb & Associates LLC as the Company's independent registered public accounting firm for the fiscal year ending 2026.
  evidence_url: https://www.sec.gov/Archives/edgar/data/711034/000106299326003106/0001062993-26-003106-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.