---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-111112"
form_type: "8-K"
ticker: "MUX"
cik: "0000314203"
company_name: "McEwen Inc."
filed_at: "2023-10-24T23:59:59+00:00"
generated_at: "2026-06-09T14:54:40.119814+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# McEwen Mining closes $10M Nuton investment in McEwen Copper; ownership drops to 47.7%

## Summary
- Nuton (Rio Tinto) purchased 152,615 shares in private placement ($4M to McEwen Copper) and 232,000 shares secondary ($6M to McEwen Mining).
- Post-transaction: McEwen Mining owns 47.7% of McEwen Copper; Nuton owns 14.5%.
- Amendment No. 2 to Nuton Collaboration Agreement extends exclusivity over copper heap leach tech until Feb 1, 2025.

## SEC filing metadata
- accession: 0001104659-23-111112
- form_type: 8-K
- ticker: MUX
- cik: 0000314203
- company_name: McEwen Inc.
- filed_at: 2023-10-24T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/314203/000110465923111112/0001104659-23-111112-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/314203/000110465923111112/tm2328271d2_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-111112
- JSON: https://secwatch.observer/filing/0001104659-23-111112.json
- Plain text: https://secwatch.observer/filing/0001104659-23-111112.txt

## Key facts
- Material Agreements
  McEwen Inc. entered into Subscription Agreement with Nuton LLC valued at purchase of 152,615 shares of McEwen Copper for approximately $4 million in proceeds (effective 2023-10-18).
  - Action: entry
  - Agreement: equity purchase
  - Counterparty: Nuton LLC
  - Value: purchase of 152,615 shares of McEwen Copper for approximately $4 million in proceeds
  - Effective: 2023-10-18
  source text: McEwen Copper and Nuton entered into a definitive private placement subscription agreement (the “ Subscription Agreement ”) pursuant to which Nuton purchased 152,615 shares of McEwen Copper from McEwen Copper
  evidence_url: https://www.sec.gov/Archives/edgar/data/314203/000110465923111112/0001104659-23-111112-index.htm
- Material Agreements
  McEwen Inc. entered into Share Purchase Agreement with Nuton LLC valued at purchase of 232,000 shares of McEwen Copper from the Company for approximately $6 million in proceed (effective 2023-10-18).
  - Action: entry
  - Agreement: equity purchase
  - Counterparty: Nuton LLC
  - Value: purchase of 232,000 shares of McEwen Copper from the Company for approximately $6 million in proceed
  - Effective: 2023-10-18
  source text: the Company, Minera Andes Inc., a subsidiary of the Company, McEwen Copper and Nuton entered into a definitive share purchase agreement (the “Share Purchase Agreement”) pursuant to which Nuton purchased 232,000 shares of McEwen Copper from the Company in a secondary sale
  evidence_url: https://www.sec.gov/Archives/edgar/data/314203/000110465923111112/0001104659-23-111112-index.htm
- Material Agreements
  McEwen Inc. amended Amendment No. 2 to Nuton Collaboration Agreement with Nuton LLC valued at amended to extend the period of exclusivity over novel, trade secret or patented copper heap leach t (effective 2023-10-18).
  - Action: amendment
  - Agreement: collaboration
  - Counterparty: Nuton LLC
  - Value: amended to extend the period of exclusivity over novel, trade secret or patented copper heap leach t
  - Effective: 2023-10-18
  source text: McEwen Copper and certain of its affiliates entered into Amendment No. 2 to Nuton Collaboration Agreement, dated October 18, 2023, to amend the Nuton Collaboration Agreement, dated August 30, 2022, as amended by Amendment No. 1 to the Nuton Collaboration Agreement, dated March 9, 2023, to extend the period of exclusivity over novel, trade secret or patented copper heap leach technologies until February 1, 2025
  evidence_url: https://www.sec.gov/Archives/edgar/data/314203/000110465923111112/0001104659-23-111112-index.htm

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