---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-024122"
form_type: "8-K"
ticker: "PPTA"
cik: "0001526243"
company_name: "PERPETUA RESOURCES CORP."
filed_at: "2026-03-05T23:59:59+00:00"
generated_at: "2026-05-15T19:37:38.322514+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Perpetua Resources expands Hatch EPCM contract; $204.3M control budget for Stibnite Gold Project

## Summary
- Amendment adds pressure-oxidation/oxygen system (POX/O2) to Hatch's scope, with $42M of the $204.3M control budget allocated to it.
- Control budget total $204.3M for engineering, procurement, construction management services for Stibnite Gold Project.
- Process guarantee includes performance parameters with liquidated damages or bonuses, not material to contract price.
- Intellectual property provisions updated; POX/O2 improvements remain Hatch property, owner gets license for Project.
- Amendment effective Feb 28, 2026; follows preliminary design work under prior limited notices to proceed.

## SEC filing metadata
- accession: 0001104659-26-024122
- form_type: 8-K
- ticker: PPTA
- cik: 0001526243
- company_name: PERPETUA RESOURCES CORP.
- filed_at: 2026-03-05T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1526243/000110465926024122/0001104659-26-024122-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1526243/000110465926024122/tm268005d2_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-024122
- JSON: https://secwatch.observer/filing/0001104659-26-024122.json
- Plain text: https://secwatch.observer/filing/0001104659-26-024122.txt

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