---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-117458"
form_type: "8-K"
ticker: "CTGO"
cik: "0001502377"
company_name: "Contango Silver & Gold Inc."
filed_at: "2025-05-12T23:59:59+00:00"
generated_at: "2026-05-21T23:30:28.880557+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Contango ORE Johnson Tract IA: Post-tax NPV $225M, IRR 30%, 1.3yr payback

## Summary
- Post-tax NPV5 of $224.5M and IRR of 30.2% at $2,200/oz gold base case; payback 1.3 years discounted.
- Initial capital costs $213.6M; AISC $860/GEO; average annual production 102,258 GEO over 7-year mine life.
- Indicated resource 3.49M tonnes at 5.33 g/t Au; inferred 0.71M tonnes at 1.36 g/t Au; polymetallic (Au, Zn, Cu, Pb, Ag).
- Gold price sensitivity: at $3,000/oz, post-tax NPV rises to $398.2M, IRR 45%, payback <1 year.
- Company expects permitting for access tunnel within one year; aims for FAST-41 priority under NEDC.

## SEC filing metadata
- accession: 0001193125-25-117458
- form_type: 8-K
- ticker: CTGO
- cik: 0001502377
- company_name: Contango Silver & Gold Inc.
- filed_at: 2025-05-12T23:59:59+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/1502377/000119312525117458/0001193125-25-117458-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1502377/000119312525117458/d90137d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-117458
- JSON: https://secwatch.observer/filing/0001193125-25-117458.json
- Plain text: https://secwatch.observer/filing/0001193125-25-117458.txt

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