---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-087459"
form_type: "8-K"
ticker: "MUX"
cik: "0000314203"
company_name: "McEwen Inc."
filed_at: "2025-09-04T23:59:59+00:00"
generated_at: "2026-05-17T08:23:16.276350+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# McEwen reports high-grade gold intercepts at Grey Fox; discovers new high-grade zone at Windfall in Nevada

## Summary
- Grey Fox drilling: Gibson zone 10.1 g/t Au over 5.8m and 10.4 g/t Au over 5.6m; Grey Fox South 4.8 g/t Au over 14.9m.
- Updated Grey Fox resource estimate expected October 2025; current resource 1.538M oz Indicated at 3.64 g/t Au.
- Windfall Project: new high-grade zone with 8.1 g/t Au over 8.7m, including 50.3 g/t Au, 782 g/t Ag, 15% Pb, 2.5% Zn over 1.3m.
- Management targets >200K oz annual gold output and lower costs by 2026; Nevada projects advancing with private land permitting potential.
- Windfall drilling aims for resource estimate by year-end 2025; tests extensions and metallurgical samples.

## SEC filing metadata
- accession: 0001104659-25-087459
- form_type: 8-K
- ticker: MUX
- cik: 0000314203
- company_name: McEwen Inc.
- filed_at: 2025-09-04T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/314203/000110465925087459/0001104659-25-087459-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/314203/000110465925087459/tm2525166d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-087459
- JSON: https://secwatch.observer/filing/0001104659-25-087459.json
- Plain text: https://secwatch.observer/filing/0001104659-25-087459.txt

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