---
schema_version: "secwatch.filing_event.v1"
accession: "0001062993-25-015430"
form_type: "8-K"
ticker: "THMG"
cik: "0000711034"
company_name: "THUNDER MOUNTAIN GOLD INC"
filed_at: "2025-09-09T23:59:59+00:00"
generated_at: "2026-05-17T07:25:15.625823+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Thunder Mountain Gold signs small-scale production deal with MFD; MFD funds 100% capital, THMG operates South Mountain

## Summary
- MFD to fund 100% of qualifying capital for small-scale production at South Mountain Project in Idaho.
- Revenue split: 80%/20% (MFD/THMG) until MFD recovers 1.5x investment, then 50/50 up to 1.5M tonnes.
- MFD granted option to earn 10% interest in project by spending $1.0M in exploration by October 31, 2026.
- Deal is non-dilutive to THMG; no equity issuance contemplated; THMG retains operator control.
- Implementation subject to permitting, budgets, and TSX Venture Exchange approval.

## SEC filing metadata
- accession: 0001062993-25-015430
- form_type: 8-K
- ticker: THMG
- cik: 0000711034
- company_name: THUNDER MOUNTAIN GOLD INC
- filed_at: 2025-09-09T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 3.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/711034/000106299325015430/0001062993-25-015430-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/711034/000106299325015430/form8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001062993-25-015430
- JSON: https://secwatch.observer/filing/0001062993-25-015430.json
- Plain text: https://secwatch.observer/filing/0001062993-25-015430.txt

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