---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-084027"
form_type: "8-K"
ticker: "PPTA"
cik: "0001526243"
company_name: "PERPETUA RESOURCES CORP."
filed_at: "2023-07-26T23:59:59+00:00"
generated_at: "2026-06-13T02:19:05.919615+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Perpetua Resources definitizes $24.8M Defense Production Act agreement for Stibnite antimony project

## Summary
- Definitized Technology Investment Agreement with U.S. Air Force Research Laboratory for up to $24,812,062.
- Funding supports environmental studies and construction readiness for Stibnite Gold Project (antimony trisulfide for defense).
- Reimbursement for costs over 24 months; no change to material terms from December 2022 undefinitized agreement.
- Stibnite would be only domestic mined source of antimony, critical for munitions.
- NEPA review process continues uninterrupted.

## SEC filing metadata
- accession: 0001104659-23-084027
- form_type: 8-K
- ticker: PPTA
- cik: 0001526243
- company_name: PERPETUA RESOURCES CORP.
- filed_at: 2023-07-26T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1526243/000110465923084027/0001104659-23-084027-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1526243/000110465923084027/tm2322087d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-084027
- JSON: https://secwatch.observer/filing/0001104659-23-084027.json
- Plain text: https://secwatch.observer/filing/0001104659-23-084027.txt

## Key facts
- Material Agreements
  PERPETUA RESOURCES CORP. entered into Technology Investment Agreement with United States Department of Defense, Air Force Research Laboratory valued at up to $24,800,000 (effective 2022-12-16).
  - Action: entry
  - Counterparty: United States Department of Defense, Air Force Research Laboratory
  - Value: up to $24,800,000
  - Effective: 2022-12-16
  source text: Effective December 16, 2022, Perpetua Resources Idaho, Inc. (“Perpetua”), a wholly owned subsidiary of Perpetua Resources Corp. (the “Company”), entered into an undefinitized Technology Investment Agreement (“TIA”) with the United States Department of Defense, Air Force Research Laboratory (“DOD”) for an award of up to $24,800,000 under Title III of the Defense Production Act (“DPA”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1526243/000110465923084027/0001104659-23-084027-index.htm

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