---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-335368"
form_type: "8-K"
ticker: "IAUX"
cik: "0001853962"
company_name: "i-80 Gold Corp."
filed_at: "2025-12-29T23:59:59+00:00"
generated_at: "2026-05-16T12:08:27.329340+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# i-80 Gold updates Lone Tree Plant refurbishment: $430M capex, 12-24 month payback, commissioning Q4 2027

## Summary
- Capital cost estimate $430M ($412M plus $18M spares); AACE Class 3; slightly above ~$400M due to inflation and expanded tailings filtration.
- Expected payback 12-24 months depending on grade and gold price; owner-operator processing reduces costs to ~1/3 of toll-milling.
- Margin increase estimated at $1,000-$1,500/oz; commissioning targeted for Q4 2027; construction decision after recapitalization.
- Permit applications due Q1 2026; demolition Q2 2026; construction H2 2026; recapitalization expected by end of Q2 2026.
- Plant to serve as central hub for Granite Creek, Archimedes, and Cove mines; nameplate 2,268 tpd / 827,806 tpa.

## SEC filing metadata
- accession: 0001193125-25-335368
- form_type: 8-K
- ticker: IAUX
- cik: 0001853962
- company_name: i-80 Gold Corp.
- filed_at: 2025-12-29T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1853962/000119312525335368/0001193125-25-335368-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1853962/000119312525335368/d34783d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-335368
- JSON: https://secwatch.observer/filing/0001193125-25-335368.json
- Plain text: https://secwatch.observer/filing/0001193125-25-335368.txt

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