Nature of Operations	12 Months Ended
Dec. 31, 2025
Nature of Operations
Nature of Operations	1.Nature of Operations Perpetua Resources Corp. (the “Corporation”, and, together with its Subsidiaries, the “Company”, “Perpetua Resources” or “Perpetua”) was incorporated on February 22, 2011 under the Business Corporation Act (British Columbia). The Corporation was organized to hold shares in wholly owned subsidiaries that locate, acquire, develop and restore mineral properties located principally in the Stibnite – Yellow Pine mining district in Valley County, Idaho, USA. The Corporation’s principal asset is 100% ownership in subsidiaries that control the Stibnite Gold Project (“Stibnite Gold Project” or the “Project”). The Company currently operates in one segment, which is mineral exploration and development in the United States. The Company’s long-term plan is to generate future profitable operations through the development of the Stibnite Gold Project, which will require additional financing. The Company does not intend to commence full construction on the Project until full financing is in place for construction of the Project. While such financing is expected to be secured during 2026, if such financing is delayed, the Company has flexibility to defer or delay such expenses until financing is in place. The full financing is expected to include project financing from U.S. EXIM or other sources as well as proceeds from the Company’s 2025 equity offerings. On March 30, 2026, the board of U.S. EXIM initiated the last formal step before a vote for final approval of an approximately $2.7 billion senior secured loan for the construction and development of the Project by unanimously agreeing to publish a notification to Congress with respect to the proposed loan. The initiation of the Notice Period does not represent a financing commitment from U.S. EXIM. A funding commitment, if any, is conditional upon the satisfaction of certain conditions, including approval by the U.S. EXIM board following the 25-day Notice Period and execution of definitive loan documentation. There can be no assurance that the board of U.S. EXIM will approve the proposed loan after the Notice Period, or at all, or that, if approved, the terms or amount of such loan will be the same as those initially indicated or that the proposed loan will be sufficient for us to construct the Project. Perpetua continues to work with U.S. EXIM to advance through the next stages of U.S. EXIM’s due diligence and loan application process. The amount and timing of such funding from U.S. EXIM, if any, is uncertain and subject to conditions outside the Company’s control. We believe our Project financing plans will be successful, although there can be no assurance that the Company will successfully complete all of its contemplated plans because these plans are not entirely within our control as of the date hereof. As such, Perpetua remains open to strategic funding opportunities that support Perpetua’s overall financing and development goals for the Project, which may include the issuance of additional equity, new debt, or project specific debt; government funding; offtake, royalty or streaming arrangements; and/or other financing or strategic opportunities. The future receipt of potential funding from these and/or other means cannot be considered certain at this time. In the event Project funding is not available in the amounts or at the times anticipated, the Company may defer certain activities to ensure available cash resources are sufficient to satisfy the Company anticipated expenses until such full project financing is in place.

Nature of Operations

12 Months Ended

Dec. 31, 2025

1.Nature of Operations

Perpetua Resources Corp. (the “Corporation”, and, together with its Subsidiaries, the “Company”, “Perpetua Resources” or “Perpetua”) was incorporated on February 22, 2011 under the Business Corporation Act (British Columbia). The Corporation was organized to hold shares in wholly owned subsidiaries that locate, acquire, develop and restore mineral properties located principally in the Stibnite – Yellow Pine mining district in Valley County, Idaho, USA. The Corporation’s principal asset is 100% ownership in subsidiaries that control the Stibnite Gold Project (“Stibnite Gold Project” or the “Project”). The Company currently operates in one segment, which is mineral exploration and development in the United States.

The Company’s long-term plan is to generate future profitable operations through the development of the Stibnite Gold Project, which will require additional financing. The Company does not intend to commence full construction on the Project until full financing is in place for construction of the Project. While such financing is expected to be secured during 2026, if such financing is delayed, the Company has flexibility to defer or delay such expenses until financing is in place. The full financing is expected to include project financing from U.S. EXIM or other sources as well as proceeds from the Company’s 2025 equity offerings.

On March 30, 2026, the board of U.S. EXIM initiated the last formal step before a vote for final approval of an approximately $2.7 billion senior secured loan for the construction and development of the Project by unanimously agreeing to publish a notification to Congress with respect to the proposed loan. The initiation of the Notice Period does not represent a financing commitment from U.S. EXIM. A funding commitment, if any, is conditional upon the satisfaction of certain conditions, including approval by the U.S. EXIM board following the 25-day Notice Period and execution of definitive loan documentation. There can be no assurance that the board of U.S. EXIM will approve the proposed loan after the Notice Period, or at all, or that, if approved, the terms or amount of such loan will be the same as those initially indicated or that the proposed loan will be sufficient for us to construct the Project. Perpetua continues to work with U.S. EXIM to advance through the next stages of U.S. EXIM’s due diligence and loan application process. The amount and timing of such funding from U.S. EXIM, if any, is uncertain and subject to conditions outside the Company’s control.

We believe our Project financing plans will be successful, although there can be no assurance that the Company will successfully complete all of its contemplated plans because these plans are not entirely within our control as of the date hereof. As such, Perpetua remains open to strategic funding opportunities that support Perpetua’s overall financing and development goals for the Project, which may include the issuance of additional equity, new debt, or project specific debt; government funding; offtake, royalty or streaming arrangements; and/or other financing or strategic opportunities. The future receipt of potential funding from these and/or other means cannot be considered certain at this time. In the event Project funding is not available in the amounts or at the times anticipated, the Company may defer certain activities to ensure available cash resources are sufficient to satisfy the Company anticipated expenses until such full project financing is in place.