News Summary

• Perpetua Resources' vision is to provide the U.S. with a domestic source of the critical mineral antimony while developing one of the largest and highest-grade open pit gold mines in the Americas.
• The Company is currently advancing a comprehensive project financing plan along with detailed engineering, long-lead time procurement, early works construction activities and execution planning in anticipation of a final investment and construction decision in the second half of 2026.
• For details, please see the Company's filings available on EDGAR and SEDAR+.