X0508 4 2025-12-23 0 0001526243 PERPETUA RESOURCES CORP. PPTA 0001902350 Dean Robert Alan 405 S. 8TH STREET, STE 201 BOISE ID 83702 1 0 0 0 0 Common Shares 2025-12-23 4 X 0 20000 8.56 A 30000 D Common Shares 2025-12-23 4 S 0 6490 27.55 D 23510 D Common Shares 2025-12-24 4 S 0 5000 26.31 D 18510 D Director and Employee Stock Option (right to buy) 8.56 2025-12-23 4 X 0 20000 0 D 2026-01-20 Common Shares 20000 0 D The exercise price of the stock option of CAD $11.80 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on December 19, 2025, of C$1.3780 = US$1.00. The sale price of the stock option of CAD $37.97 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on December 19, 2025, of C$1.3780 = US$1.00. The sale price of CAD $37.97 is a weighted average price. These shares were sold in multiple transactions at prices ranging from CAD $37.18 to CAD $38.27, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the range set forth in this footnote (2). These shares represent shares sold to cover option exercise price. The sale price of the stock option of CAD $36.25 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on December 19, 2025, of C$1.3780 = US$1.00. The sale price of CAD $36.25is a weighted average price. These shares were sold in multiple transactions at prices ranging from CAD $36.25 to CAD $36.26, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the range set forth in this footnote (3). These shares represent shares sold to cover payment of taxes relating to the option exercise. The stock option, representing a right to purchase a total of 20,000 Common Shares, became exercisable as to 5,000 Common Shares on January 20, 2021, as to 5,000 Common Shares on January 20, 2022, as to 5,000 Common Shares on January 20, 2023, and as to the remaining 5,000 on January 20, 2024. /s/ Tanya Nelson, as attorney-in-fact for Robert Dean 2025-12-29