Transaction Details

Footnotes

A deferred share unit ("DSU") entitles the holder to receive one common share of Perpetua Resources Corp. (the "Issuer") (or, at the election of the holder and subject to the approval of the administrator of the Issuer's Omnibus Equity Incentive Plan, cash equal to the value thereof on the date of settlement) for each DSU. The Reporting Person elected to receive DSUs in lieu of a cash retainer for his service during the third quarter of 2025. The DSUs are fully vested as of the date of grant and will be settled following the reporting person's separation from service. | Based on the closing price of the Issuer's Common Shares on the Nasdaq Capital Market on September 24, 2025.