What changed in this filing

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Item 1. Business

2025-03-19 compared with 2024-03-26 · 91 added, 54 removed, 97 unchanged (60% of the section changed)

14 unchanged sentences

Bureau of Land Management claim rental payments and filings are current as of the date of this filing and the claims are all held in good standing.

During the years ended December 31, 2022 and December 31, 2023, 53 of the Corporation’s unpatented lode mining claims were relinquished and re-staked with 205 unpatented mill sites over areas non-mineral in character and suitable for mill sites should a development decision be made.

Normal maintenance and upkeep of the Project infrastructure continued during the year.

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(“PRII”) has no ownership interest in the Stibnite Gold Project;

rather, it is the designated operating entity and manages the activities on the Project site.

rather, it is the designated operating entity of the Corporation and manages the activities on the Project site.

The property holding entity, Idaho Gold Resources Company, LLC (“IGRCLLC”), is the surviving entity in a merger with Stibnite Gold Company (“SGC”), effective June 3, 2021, and is managed pursuant to an operating agreement with PRII.

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Permitting and Environmental Matters

Perpetua Resources focuses on the exploration and mining of the Stibnite Gold Project, the reclamation of prior deposits and historical tailings, and the restoration of the area to address historical activities and legacy contamination.

Perpetua Resources is focused on the exploration and mining of the Stibnite Gold Project (the “Project”), the reclamation of prior deposits and historical tailings, and the restoration of the area to address historical activities and legacy contamination.

Our project is, therefore, subject to numerous environmental regulations, including federal, state, and local laws.

Significantly, we are subject to formal review under NEPA and extensive permitting requirements.

In 2016, the Forest Service began its formal review of the Stibnite Gold Project under NEPA.

The Forest Service completed scoping in 2017 and subsequently pursuant to the NEPA process, the United States Forest Service and cooperating agencies undertook extensive review of our project and proposed actions through a Draft Environmental Impact Statement (“DEIS”), released by the USFS in August 2020.

Significantly, we are subject to formal review under the National Environmental Policy Act (“NEPA”) and extensive permitting requirements.

In 2016, the United States Forest Service (“USFS” or the “Forest Service”) began its formal review of the Stibnite Gold Project under NEPA.

The Forest Service completed scoping in 2017 and subsequently pursuant to the NEPA process, the USFS and cooperating agencies undertook extensive review of our project and proposed actions through a Draft Environmental Impact Statement (“DEIS”), released by the USFS in August 2020.

In response to public and agency feedback on the DEIS, Perpetua Resources proposed modifications to the mine plan analyzed in DEIS Alternative 2 to include reduction of the project footprint, improvements in water quality, and lower water temperatures.

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After nearly two years of review, the SDEIS was published on October 28, 2022 for a 75-day public comment period.

The USFS identified Perpetua Resources’ proposed action, the “Modified Mine Plan,” as the Preferred Alternative and concluded that it would reasonably accomplish the purpose and need for consideration of approval of the Stibnite Gold Project, while giving consideration to environmental, economic, and technical factors.

Under NEPA, a “Preferred Alternative” is identified by a Federal agency in a DEIS to let the public know which action the agency is leaning toward selecting as final.

However, identification of a “Preferred Alternative” does not represent a final decision and the USFS may still choose various actions based on the Modified Mine Plan or each of the alternatives analyzed in the SDEIS when developing the Final Environmental Impact Statement (“FEIS”).

The SDEIS public review period closed on January 10, 2023.

On January 1, 2024, the USFS released an updated schedule for the Project.

Based on the updated schedule, the Company anticipates that the USFS will publish a FEIS and a Draft Record of Decision in the second quarter of 2024 and a Final Record of Decision (“ROD”) in the fourth quarter of 2024.

The publication of the permitting schedule does not indicate any commitments on the part of the USFS regarding the content or timing of a final decision.

In developing the FEIS, the USFS may select an action based on components of each of the alternatives analyzed in the SDEIS.

Furthermore, the USFS is not bound by the permitting schedule and anticipated milestones may be delayed materially or not be satisfied.

We continue to work on obtaining the required ancillary permits in parallel with the agency’s timeline.

Our project is subject to ongoing litigation and could face further litigious challenges in the future.

To address historical legacy impacts at the site of the Stibnite Gold Project, Perpetua Resources has voluntarily entered into an Administrative Settlement Agreement and Order on Consent (“ASAOC”) with the United States Environmental Protection Agency (the “U.S.

EPA”) and the United States Department of Agriculture, pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act.

Finalized on January 15, 2021, the ASAOC provides for a number of time critical removal actions (early cleanup actions) designed to improve water quality in several areas of the site.

Upon signing of the ASAOC, the aggregate cost of the obligation was estimated to be approximately $7,473,805.

The USFS identified the Modified Mine Plan as the Preferred Alternative and concluded that it would reasonably accomplish the purpose and need for consideration of approval of the Stibnite Gold Project, while giving consideration to environmental, economic, and technical factors.

On September 6, 2024, the USFS published the Final Environmental Impact Statement (“FEIS”) and a Draft Record of Decision (“DROD”) for the Stibnite Gold Project.

The FEIS analyzes the potential environmental effects (including benefits) of the mining and reclamation activities proposed as part of the Stibnite Gold Project.

The DROD outlined the USFS’s proposed decision to authorize the Modified Mine Plan and to approve a special use authorization for transmission line upgrades and installation of a new power transmission line with supporting infrastructure.

On January 3, 2025, the USFS published the Final Record of Decision (the “ROD”) and FEIS Errata authorizing the Modified Mine Plan.

Per the requirements of the FEIS and ROD, numerous plans comprising the suite of Environmental Monitoring and Management Plans are in process and will incorporate Project updates as well as required financial assurance, mitigation measures, environmental protection measures and design features.

This will include preparation of a Final Mine Plan of Operations.

The Company’s Clean Water Act (“CWA”) Section 404 permit application, proposed Compensatory Mitigation Plan, and associated financial assurance remain under review by the U.S.

Army Corps of Engineers (the “Army Corps.”) after the public comment period ended in October 2023.

The Army Corps has been a part of the review process as a cooperating agency since the Company began the federal NEPA permitting process and has been formally evaluating the Section 404 permit application and proposed Compensatory Mitigation Plan since 2023.

The Section 404 permit is the last remaining federal permit required to be issued prior to a construction decision.

Perpetua expects the permit to be issued in the first half of 2025.

Fish and Wildlife Service issued its Final Biological Opinion on September 6, 2024 and the National Marine Fisheries Service issued its Final Biological Opinion on October 7, 2024 (collectively, the “Final Biological Opinions”).

These Final Biological Opinions imposed certain requirements on the Project that are incorporated into the USFS ROD.

The Company has filed applications for certain state permits and other approvals required from various agencies of the State of Idaho.

These applications and approvals are at various stages of the process required under Idaho law and include applications and plans submitted to the Idaho Department of Environmental Quality (“IDEQ”) for an air Permit to Construct, Idaho Pollutant Discharge Elimination System discharge permits and a cyanidation facility permit, to the Idaho Department of Water Resources (“IDWR”) for permanent mine closure and financial assurance, and to IDWR for a stream alteration permit.

See Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations – Ancillary Permitting Update, below.

With the receipt of the ROD, the Corporation is currently focused on advancing the Project towards a construction decision, including finalizing the remaining federal and state permits and securing project financing.

To address historical legacy impacts at the site of the Stibnite Gold Project, Perpetua Resources has voluntarily entered into an Administrative Settlement Agreement and Order on Consent (“ASAOC”) pursuant to CERCLA with the United States Environmental Protection Agency (the “U.S.

EPA”) and the United States Department of Agriculture (“USDA”).

Finalized on January 15, 2021, the ASAOC provides for a number of time-critical removal actions (early response actions referred to as “Phase 1” in the ASAOC) designed to improve water quality in several areas of the site.

Upon signing of the ASAOC, the aggregate cost of the Phase 1 obligation was estimated to be approximately $7,473,805.

In 2021, 2022, 2023, and 2024 the total cost estimate to voluntarily address environmental conditions increased to $19,185,438 due to scope changes, inflation and higher fuel prices.

As of December 31, 2023, the corresponding environmental liability was estimated to be $764,607.

See also Note 9 to the Consolidated Financial Statements.

As of December 31, 2024, Perpetua Resources determined it had completed all Phase 1 response actions required by the ASAOC and filed Removal Action Completion Reports (“RACR”) with the U.S.

EPA and USDA with respect to such completion.

Pursuant to the terms of the ASAOC, the two federal agencies are reviewing Perpetua Resources’ RACR to ascertain whether they agree that the required Phase 1 activities are complete.

The ASAOC includes a process under which the Company and the signatory federal agencies will evaluate whether the Company will proceed with additional response actions after the Phase 1 work has been certified by the federal agencies as complete.

The scope of any such potential additional actions and their costs have not yet been determined.

See also Notes 8 and 9 to the Consolidated Financial Statements.

Our Project is subject to ongoing litigation and could face further litigious challenges in the future.

Following the USFS’ publication of the ROD authorizing the mine plan for the Project, claims were filed in the U.S.

District Court for the District of Idaho against the USFS and other federal agencies on February 18, 2025 by a number of claimants, including Save the South Fork Salmon and the Idaho Conservation League, alleging violations of NEPA and other federal laws in the regulatory review process.

Among other remedies, the claimants seek to vacate the ROD, FEIS, the Final Biological Opinions and Project approvals and to enjoin any further implementation of the Project.

PRII has filed a motion with the court to intervene in this lawsuit.

While the Company believes the federal regulatory processes resulting in the issuance of the FEIS, ROD, and other approvals and documentation were conducted thoroughly and completely by the relevant federal regulatory agencies, there can be no assurance that the ROD, FEIS, and other Project approvals will be upheld upon judicial review.

See Item 1A, Risk Factors , below.

Government and Environmental Regulations

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The Corporation plans to obtain the licenses, permits or other authorizations currently required to conduct its exploration or development programs, and it believes it is currently in material compliance with governing mining, health, safety and environmental statutes and regulations in the United States and Idaho.

Except as otherwise noted above, we are not subject to any orders or directions with respect to the foregoing laws and regulations.

For a more detailed discussion of the various government laws and regulations applicable to our operations and potential negative effects of these laws and regulations, see section Item 1A, Risk Factors , below.

Except as otherwise noted herein, we are not subject to any orders or directions with respect to the foregoing laws and regulations.

For a more detailed discussion of the various government laws and regulations applicable to our operations and potential negative effects of these laws and regulations, see Item 1A, Risk Factors , below.

Our operations are also subject to numerous environmental, health, and safety laws and regulations in the jurisdictions in which we operate.

These laws and regulations may require us to take precautions with respect to threatened, endangered, or otherwise protected species and their habitat as well as other natural, historical, and cultural resources, perform environmental assessments or impact statements, implement siting and operational programs or best practices to minimize environmental impacts from our operations, perform investigatory remedial obligations, and obtain federal, state, and local permits, licenses, or other approvals.

These laws and regulations may require us to take precautions with respect to threatened, endangered, or otherwise protected species and their habitats as well as other natural, historical, and cultural resources, perform environmental assessments or impact statements, implement siting and operational programs or best practices to minimize environmental impacts from our operations, perform investigatory and remedial obligations, and obtain federal, state, and local permits, licenses, or other approvals.

Failure to comply with these laws and regulations may result in the imposition of significant fines or penalties.

Additionally, we could experience significant opposition from third parties to our application for such permits or during the administrative agency review and appeal process after the issuance of such permits.

Delays or denial of permits, or the imposition of costly and difficult to comply with conditions, may impair the development of our Project or curtail our planned operations.

Delays, denials of, or challenges to permits, or the imposition of costly and difficult to comply with conditions, may impair the development of our Project or curtail our planned operations.

The following provides a summary of the more significant environmental, health, and safety laws and regulations which our operations are subject to and for which compliance with may have a material adverse impact on our business.

National Environmental Policy Act ( “ NEPA ” )

National Environmental Policy Act

Our Project is subject to environmental review under NEPA.

This law requires federal agencies to evaluate the environmental impact of their actions that may significantly affect the quality of the human environment and is a prerequisite for the granting of a permit or similar authorization for the development of certain projects.

As part of the review, the federal agencies are required to consider numerous environmental impacts, such as impacts on air quality, water quality, cultural resources, wildlife, geology, aesthetics, as well as alternatives to the project.

This law requires federal agencies to evaluate the environmental impact of their actions that may significantly affect the quality of the human environment;

such review is a prerequisite for the granting of permits or similar authorization from federal agencies for the development of certain projects.

As part of the review, the federal agencies are required to consider numerous environmental impacts, which may include potential impacts on air quality, water quality, cultural resources, wildlife, geology, and aesthetics, as well as alternatives to the project.

The review process can lead to significant delays in approval of such projects and the issuance of the requisite permits which, in turn, can impact both the cost and development of operations.

As a result of NEPA review, agencies may decide to deny permits or other support for a project, or condition approvals on certain modifications or mitigation actions.

As a result of NEPA review, agencies may seek to deny permits or other support for a project, or condition approvals on certain modifications or mitigation actions.

Additionally, authorizations under NEPA are subject to litigation, protest, or appeal, which has the potential to lead to further delays.

Pursuant to NEPA, the Forest Service and cooperating agencies undertook additional extensive review of our Project and proposed actions.

As a result of this review, a SDEIS was published on October 28, 2022 for a 75-day public comment period which closed on January 10, 2023.

Pursuant to NEPA, the USFS and cooperating agencies undertook extensive review of our Project and proposed actions.

As a result of this review, the USFS published the FEIS and DROD with respect to the Project on September 6, 2024 and published the ROD and FEIS Errata authorizing the Modified Mine Plan for the Project on January 3, 2025.

Certain parties on February 18, 2025 filed a lawsuit in the U.S.

District Court for the District of Idaho alleging that the USFS and other federal agencies violated applicable laws and other requirements in issuing the ROD and FEIS and taking related regulatory actions.

The litigation is ongoing, and PRII has filed a motion with the court to intervene in this lawsuit.

See “ Permitting and Environmental Matters ” above.

Comprehensive Environmental Response, Compensation, and Liability Act

The site upon which our Project is located has significant legacy contamination.

The Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA”) can impose joint and several liability, without regard to fault or legality of conduct, on classes of persons who are statutorily responsible for the release of hazardous substances into the environment.

The site upon which our Project is located has significant legacy contamination from previous mining operations by companies not related to Perpetua.

CERCLA can impose joint and several liability, without regard to fault or legality of conduct, on classes of persons who are statutorily responsible for the release of hazardous substances into the environment.

These persons include current owners or operators of a site where a release has occurred.

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Idaho also has environmental cleanup laws analogous to CERCLA.

Voluntary early cleanup actions can be undertaken pursuant to settlement agreements under CERCLA.

Voluntary cleanup actions can be undertaken pursuant to settlement agreements under CERCLA.

We entered into an ASAOC with the U.S.

EPA and the United States Department of Agriculture to conduct a number of time critical removal actions focused on improving water quality in several areas of the site.

EPA and the USDA in 2021 to conduct a number of time critical removal actions focused on improving water quality in several areas of the site.

The Company filed RACR with the U.S.

EPA and USDA advising the agencies that the Company believes it has completed all work required under Phase 1 of the ASAOC.

The federal agencies are currently reviewing the RACR.

See “ Permitting and Environmental Matters ” above and Notes 8 and 9 to the Consolidated Financial Statements.

Protection of Species and Habitat

Our operations are subject to several environmental regulations and guidelines regarding various protected species and their habitats and include the federal Endangered Species Act, the Migratory Bird Treaty Act, and the Bald and Golden Eagle Protection Act, alongside similar state laws.

These laws impose significant civil and criminal penalties for violations, including injunctions limiting or otherwise prohibiting operations in certain areas where protected species or their habitat is located.

The imposition of such restrictions, such as seasonal limitations, may result in additional costs and delays and could impact the feasibility of our Project.

Clean Water Act

The Clean Water Act (“CWA”) and other similar federal and state laws and regulations may require us to obtain permits for water discharges or take mitigation actions with respect to loss of wetlands.

The CWA and other similar federal and state laws and regulations may require us to obtain permits for water discharges or take mitigation actions with respect to the loss of wetlands.

Additionally, such regulations require us to implement a variety of best management practices to ensure that water quality is protected and the impacts of our operations on water quality are minimized.

The CWA and analogous laws and regulations provide for administrative, civil and criminal penalties for unauthorized discharges of pollutants in reportable quantities and may impose substantial potential liability for the costs of addressing such discharges.

The Nez Perce Tribe in 2019 filed a lawsuit against the Company in the U.S.

District Court for the District of Idaho alleging violations of the CWA due to, among other things, exceedances of applicable water quality standards in certain water bodies in the vicinity of the Project site.

The Company entered into a settlement of this litigation with the Nez Perce Tribe in 2023.

Legal Proceedings , below.

Clean Air Act

The Clean Air Act and other similar laws and regulations may require us to obtain permits before construction can commence on a new source of potentially significant air emissions.

Additionally, the U.S.

EPA establishes and periodically reviews emissions standards that require the maximum degree of reduction in emissions of hazardous air pollutants, and we are required to comply with such emissions standards.

EPA and state agencies such as the Idaho Department of Environmental Quality have the ability to issue citations and orders and assess penalties for violations of permits or other applicable regulatory requirements.

Mine and Safety Health Administration

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Department of Labor’s Mine and Safety Health Administration (“MSHA”) which carries out the provisions of the Federal Mine Safety and Health Act of 1977, as amended by the Mine Improvement and New Emergency Response Act of 2006.

MSHA enforces the health and safety rules for all U.S, mines and includes mine inspections regarding compliance with applicable laws and regulations.

MSHA enforces the health and safety rules for all U.S mines and conducts mine inspections regarding compliance with applicable laws and regulations.

MSHA has the ability to issue citations and orders and assess penalties for health and safety violations.

District Exploration

No exploration drilling was completed during the reporting period.

Activities during the reporting period focused on studies to support permitting and design, engineering and environmental studies to support the ongoing activities related to the ASAOC.

No exploration drilling was conducted by the Company during the reporting period.

Some laboratory test work was completed to support requirements under the Defense Ordnance Technology Consortium agreement.

Other site activities during the reporting period focused on maintaining claim location monuments and surveying, studies to support permitting and design, engineering and environmental studies to support the ongoing activities related to the ASAOC.

At December 31, 2024, the Corporation had 36 full time employees and 1 part time employee.

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A total of 27 employees were employed in Idaho, with many of the Perpetua Resources team working remotely.

The Corporation also contracts out certain activities with specific skills to assist with various aspects of the Project.

The gold exploration and mining business is a competitive business.

The Corporation also contracts out certain activities to contractors with specific skills to assist with various aspects of the Project.

The gold and critical mineral exploration and mining business is a competitive business.

The Corporation competes with numerous other companies possessing greater financial and technical research resources.

Competition is particularly intense with respect to the acquisition of desirable undeveloped gold properties.

In addition, we also encounter competition for the hiring of key personnel.

Competition is particularly intense with respect to the acquisition of desirable, undeveloped gold or critical mineral properties.

The Corporation’s competitive strength is due, in part, to having the only antimony reserves in the United States.

If additional accessible sources of antimony become available or demand is reduced, the Corporation’s ability to access funding or government support may be affected.

We also encounter competition for the hiring of key personnel.

This competition could adversely impact our ability to advance the Project, acquire suitable prospects for exploration in the future on terms we consider acceptable, attract necessary capital funding or acquire an interest in additional properties.

See Item 1A., Risk Factors , below.

Environmental, Social and Governance (“ESG”)

Our commitment to ESG practices is a core part of our business and has been since our inception, as formalized by our ESG Policy.

We seek to guide our operations with responsible and sustainable mining practices and incorporate strong corporate governance values and stakeholder engagement into our business.

We engage regularly with key stakeholders and other interested parties, which allows us to better understand their interests, perspectives, and needs.

We also believe in both transparency and accountability as key attributes of our governance strategy and seek to deliver information in an open and consistent manner, as denoted by our 2022 Sustainability Report.

Our commitment to ESG is also incorporated into our conservation principles which govern the development of our Project and, ultimately, our operations.

Our commitment to ESG practices is explained in our ESG Policy.

Our ESG Policy, Sustainability Roadmap and our 2023 Sustainability Report can be found on the Company’s website.

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As a result, we do not believe that we will experience any shortages of required equipment or supplies in the foreseeable future.

See also section Item 1A, Risk Factors – “ A shortage of supplies and equipment, or the inability to obtain such supplies and equipment when needed and at expected prices, could adversely affect Perpetua Resources’ ability to operate its business.” and “Changes in U.S.

administrative policy, including the imposition of or increases in tariffs on steel and/or other raw materials, changes to existing trade agreements and any resulting changes in international trade relations, may have an adverse effect on us.”

Gold Price History

The price of gold is volatile and is affected by numerous factors, all of which are beyond our control, such as the sale or purchase of gold by various central banks and financial institutions, inflation, recession, fluctuation in the relative values of the U.S.

dollar and foreign currencies, changes in global and regional gold demand, in addition to international and national political and economic conditions.

The following table presents the annual high, low and average daily afternoon London Bullion Market Association (“LBMA”) gold price over the past five calendar years on the London Bullion Market ($/ounce):

dollar and foreign currencies, changes in global and regional gold demand, and international and national political and economic conditions.

The following table presents the annual high, low and average daily afternoon London Bullion Market Association gold price over the past five calendar years on the London Bullion Market ($/ounce):

2025 (through March 7)

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● the last day of our fiscal year in which we have total annual gross revenues of $1.235 billion (as such amount is indexed for inflation every five years by the SEC to reflect the change in the Consumer Price Index for All Urban Consumers published by the Bureau of Labor Statistics, setting the threshold to the nearest $1.0 million) or more;

● the last day of our fiscal year following the fifth anniversary of the date of our first sale of common equity securities pursuant to an effective registration statement under the Securities Act of 1933 (“Securities Act”);

● the date on which we have, during the prior three-year period, issued more than $1.0 billion in non-convertible debt;

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Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.

What changed 10-K

Item 1. Business