---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-22-069319"
form_type: "8-K/A"
ticker: "PPTA"
cik: "0001526243"
company_name: "PERPETUA RESOURCES CORP."
filed_at: "2022-06-08T23:59:59+00:00"
generated_at: "2026-06-25T03:31:05.889154+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Perpetua Resources amends Stibnite Gold Project technical report to add cash flow forecast and revised footnotes

## Summary
- Filed Amendment to Technical Report Summary (TRS) for Stibnite Gold Project, Revision 1 dated June 6, 2022.
- Added Appendix A with detailed annual cash flow forecast to the TRS.
- Added new footnote to Tables 1-4, 12-9, 12-10 on metallurgical recovery factor and mineral reserves reference point.
- Amended TRS does not modify earlier information, analyses, or conclusions from December 31, 2021 TRS.

## SEC filing metadata
- accession: 0001104659-22-069319
- form_type: 8-K/A
- ticker: PPTA
- cik: 0001526243
- company_name: PERPETUA RESOURCES CORP.
- filed_at: 2022-06-08T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1526243/000110465922069319/0001104659-22-069319-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1526243/000110465922069319/tm2217499d1_8ka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-22-069319
- JSON: https://secwatch.observer/filing/0001104659-22-069319.json
- Plain text: https://secwatch.observer/filing/0001104659-22-069319.txt

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