Perpetua Resources 424B5 Prospectus supplement for primary offering

Filed Pursuant to Rule 424(b)(5)

Registration No. 333-266071

PROSPECTUS SUPPLEMENT
(To the Prospectus Dated November 2, 2022)

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Perpetua Resources Corp.

Up to $20,000,000

Common Shares

We have entered into a Controlled Equity OfferingSM Sales Agreement (the “Sales Agreement”), with Cantor Fitzgerald & Co. (“Cantor”), relating to our common shares, no par value (“common shares”), offered by this prospectus supplement and the accompanying prospectus. In accordance with the terms of the Sales Agreement, we may offer and sell common shares having an aggregate offering price of up to $20,000,000 from time to time through Cantor, acting as our sales agent, pursuant to this prospectus supplement and the accompanying prospectus.

Our common shares are listed on The Nasdaq Capital Market (the “Nasdaq”) and on the Toronto Stock Exchange (the “TSX”) under the symbol “PPTA”. On May 11, 2023, the last reported sale price of our common shares was $5.12 per share on Nasdaq and C$6.95 per share on TSX. The Company has applied to the Nasdaq and the TSX for the listing of the common shares offered hereunder and such listing is subject to the approval of the Nasdaq and the TSX in accordance with their applicable listing requirements.

Sales of our common shares, if any, under this prospectus supplement and the accompanying prospectus may be made in sales deemed to be an “at the market offering” as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended (the “Securities Act”). Cantor will use its commercially reasonable efforts to sell on our behalf all the common shares requested to be sold by us, consistent with its normal trading and sales practices, on mutually agreed terms between Cantor and us. There is no arrangement for funds to be received in any escrow, trust or similar arrangement.

Cantor will receive from us in the aggregate a fixed commission rate of up to 3.0% of the aggregate gross proceeds per share sold by Cantor under the Sales Agreement. In connection with the sale of common shares on our behalf, Cantor may be deemed to be an “underwriter” within the meaning of the Securities Act and the compensation of Cantor may be deemed to be underwriting commissions or discounts. We have also agreed to provide indemnification and contribution to Cantor with respect to certain liabilities, including liabilities under the Securities Act. See “Plan of Distribution” beginning on page S-13 of this prospectus supplement for additional information regarding Cantor’s compensation.

Investing in our common shares involves a high degree of risk. Before buying any common shares, you should review carefully the risks and uncertainties described under the heading “Risk Factors” beginning on page S-8 of this prospectus supplement, page 6 of the accompanying prospectus, and in the documents incorporated by reference into this prospectus supplement and the accompanying prospectus.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus supplement is May 12, 2023

TABLE OF CONTENTS

Prospectus Supplement

Prospectus

	ABOUT THIS PROSPECTUS					1
	CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS					1
	THE COMPANY					3
	IMPLICATIONS OF BEING AN EMERGING GROWTH COMPANY					3
	WHERE YOU CAN FIND MORE INFORMATION					4
	DOCUMENTS INCORPORATED BY REFERENCE					4
	RISK FACTORS					6
	USE OF PROCEEDS					6
	CERTAIN INCOME TAX CONSIDERATIONS					6
	DESCRIPTION OF COMMON AND PREFERRED SHARES					6
	DESCRIPTION OF DEBT SECURITIES					14
	DESCRIPTION OF WARRANTS					26
	DESCRIPTION OF SUBSCRIPTION RECEIPTS					27
	DESCRIPTION OF UNITS					29
	SELLING SHAREHOLDERS					30
	PLAN OF DISTRIBUTION					30
	LEGAL MATTERS					32
	EXPERTS					33

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ABOUT THIS PROSPECTUS SUPPLEMENT

This prospectus supplement is a part of a registration statement on Form S-3 (File No. 333-266071) that we filed with the Securities and Exchange Commission (“SEC”) using a shelf registration process (the “Shelf S-3”). Under this shelf registration process, we may offer and sell from time to time an unspecified amount of any combination of securities described in the accompanying prospectus in one or more offers such as this offering. The accompanying prospectus provides you with a general description of the securities we may offer, some of which may not apply to this offering.

This prospectus supplement provides you with specific information about the common shares we are offering. Both this prospectus supplement and the accompanying prospectus include important information about us and other information you should know before investing. Generally, when we refer only to the “prospectus,” we are referring to both parts combined, and when we refer to the “accompanying prospectus” we are referring to the accompanying prospectus.

This prospectus supplement also adds to, updates and changes information contained in the accompanying prospectus. To the extent the information in this prospectus supplement is different from that in the accompanying prospectus, you should rely on the information in this prospectus supplement. You should read both this prospectus supplement and the accompanying prospectus, together with the additional information described under the caption “Documents Incorporated by Reference” in this prospectus supplement and the accompanying prospectus, before investing in the common shares.

You should rely only on the information contained or incorporated by reference in this prospectus supplement, the accompanying prospectus, the documents incorporated by reference herein and therein and any free writing prospectus we provide you. We have not, and Cantor has not, authorized anyone to provide you with any information other than that contained or incorporated by reference in this prospectus supplement or in any free writing prospectus prepared by or on behalf of us or to which we have referred you. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and Cantor is not, making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus supplement, the accompanying prospectus, the documents incorporated by reference herein and therein and any free writing prospectus we provide to you is accurate only as of the date on those respective documents. Our business, financial condition, results of operations and prospects may have changed since those dates.

You should read this prospectus supplement and the accompanying prospectus, including the documents incorporated by reference herein and therein, when making your investment decision. The distribution of this prospectus supplement and the accompanying prospectus and the offering of the common shares in certain jurisdictions may be restricted by law. Persons outside the United States, or the U.S., who come into possession of the prospectus must inform themselves about, and observe any restrictions relating to, the offering of the common shares and the distribution of this prospectus supplement and the accompanying prospectus outside the U.S. No common shares will be distributed, offered or sold in Canada on the TSX or other trading markets in Canada. See the section entitled “Plan of Distribution” in this prospectus supplement. This prospectus supplement and the accompanying prospectus does not constitute, and may not be used in connection with, an offer to sell, or a solicitation of an offer to buy, any securities offered by this prospectus supplement and the accompanying prospectus by any person in any jurisdiction in which it is unlawful for such person to make such an offer or solicitation.

Cantor is not registered as an investment dealer in any Canadian jurisdiction and accordingly Cantor will only sell the common shares in the United States and will not, directly or indirectly, solicit offers to purchase or sell any common shares in Canada.

Unless the context otherwise requires, throughout this prospectus supplement, the words “we,” “us,” “the Company,” or “Perpetua” refer to Perpetua Resources Corp. In this prospectus supplement, unless otherwise specified, all dollar amounts are expressed in U.S. dollars. All references to “dollars” or “$” are to U.S. dollars and references to “C$” are to Canadian dollars.

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WHERE YOU CAN FIND MORE INFORMATION

We filed the Shelf S-3 under the Securities Act covering the common shares to be offered and sold by this prospectus supplement. This prospectus supplement does not contain all of the information included in the Shelf S-3, some of which is contained in exhibits to the Shelf S-3. We file annual, quarterly and current reports and other information with the SEC. Our filings with the SEC, including the Shelf S-3 and the exhibits thereto, are available to the public through the Internet at the SEC’s website at http://www.sec.gov, which contains reports, proxy and information statements, and other information regarding issuers, including Perpetua, that file electronically with the SEC. We are also subject to requirements of the applicable securities laws of Canada, and documents that we file with the securities commissions or similar regulatory authorities in Canada may be found under our profile at www.sedar.com.

We make available free of charge through our website (www.perpetuaresources.com) all of the documents that we file with the SEC as soon as reasonably practicable after we electronically file those documents with the SEC or similar regulatory authorities in Canada. In addition to the reports filed or furnished with the SEC and the securities commissions or similar regulatory authorities in Canada, we publicly disclose information from time to time in our press releases, investor presentations posted on our website and at publicly accessible conferences. Such information, including information posted on or connected to our website or any other website, is not a part of, or incorporated by reference in, this prospectus supplement unless specifically so designated and filed with the SEC.

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DOCUMENTS INCORPORATED BY REFERENCE

The SEC allows us to incorporate by reference into this prospectus supplement the information we file with it, which means that we can disclose important information to you by referring you to the documents we file with the SEC. The information incorporated by reference is considered to be part of this prospectus supplement, and later information that we file with the SEC will automatically update and supersede information in this prospectus supplement and information previously filed with the SEC. Therefore, before you decide to invest in this offering, you should always check for reports we may have filed with the SEC after the date of this prospectus supplement.

We incorporate by reference the documents listed below and any future filings made by us with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 (the “Exchange Act”), after the date of the prospectus supplement and prior to completion of the offering of the common shares described in this prospectus supplement and the accompanying prospectus (other than, in each case, documents or information deemed to have been furnished and not filed in accordance with the SEC rules):

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Our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, filed on March 16, 2023, as updated through our Current Report on Form 8-K, filed on May 12, 2023 (our “Annual Report”);

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the information specifically incorporated by reference into our Annual Report from our Definitive Proxy Statement on Schedule 14A, filed on April 6, 2023;

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Our Quarterly Report on Form 10-Q for the quarter ended March 31, 2023, filed on May 12, 2023;

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Our Current Reports on Form 8-K, filed on April 3, 2023 and May 12, 2023; and

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The description of our securities filed as Exhibit 4.1 to our Annual Report.

You may obtain copies of any of the documents incorporated by reference in this prospectus supplement from the SEC through the SEC’s website at the address provided above. We will also provide without charge to each person, including any beneficial owner, to whom a prospectus supplement is delivered, upon written or oral request, a copy of any document incorporated by reference in this prospectus supplement and any exhibit specifically incorporated by reference in those documents. Requests for such documents or exhibits should be directed to:

Perpetua Resources Corp.
Attn: Investor Relations Manager
405 S. 8th Street, Ste 201
Boise, Idaho 83702
Telephone number: (208) 901-3060

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus supplement, the accompanying prospectus and the documents incorporated by reference herein and therein may contain “forward-looking statements” within the meaning of “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995 and Section 21E of the Exchange Act and “forward-looking information” within the meaning of applicable Canadian securities laws. We make such forward-looking statements pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and other federal securities laws. All statements, other than statements of historical or present facts, contained in this prospectus supplement, the accompanying prospectus, and the documents incorporated by reference herein and therein regarding our strategy, future operations, financial position, estimated revenues and losses, projected costs, prospects, plans and objectives of management are forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “anticipate,” “believe,” “expect,” “estimate,” “intend,” “plan,” “project,” “outlook,” “may,” “will,” “should,” “would,” “could,” “can,” the negatives thereof, variations thereon and other similar expressions, although not all forward-looking statements contain such identifying words. Forward-looking statements are based on certain estimates, beliefs, expectations and assumptions made in light of management’s experience and perception of historical trends, current conditions and expected future developments, as well as other factors that may be appropriate. Forward-looking statements necessarily involve unknown risks and uncertainties, which could cause actual results or outcomes to differ materially from those expressed or implied in such statements. Due to the risks, uncertainties and assumptions inherent in forward-looking information, you should not place undue reliance on forward-looking statements. These forward-looking statements include, but are not limited to, statements about:

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planned expenditures and budgets and the execution thereof, including the ability of the Company to discharge its liabilities as they become due and to continue as a going concern;

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access to capital and suitable financing sources to fund the exploration, permitting, development and construction of the Stibnite Gold Project (the “Project” or “Stibnite Gold Project”);

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permitting timelines and requirements, including with respect to the timing and outcome of the Final Environmental Impact Statement (“FEIS”), the draft Record of Decision, the Final Record of Decision and other permitting processes;

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regulatory and legal changes, requirements for additional capital, requirements for additional water rights and the potential effect of proposed notices of environmental conditions relating to mineral claims;

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analyses and other information based on expectations of future performance and planned work programs;

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possible events, conditions or financial performance that are based on assumptions about future economic conditions and courses of action;

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assumptions and analysis underlying our mineral resource and mineral reserve estimates and plans for mineral resource exploration and development;

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timing, costs and potential success of future activities on the Company’s properties, including but not limited to development and operating costs in the event that a production decision is made;

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potential results of exploration, development and environmental protection and remediation activities;

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future outlook and goals;

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current or future litigation or environmental liability;

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global economic, political and social conditions and financial markets;

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inflation levels, particularly the recent rise to historically high levels, and government efforts to reduce inflation, including increased interest rates;

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changes in gold and antimony commodity prices;

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our ability to implement our strategic plan and to maintain and manage growth effectively;

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loss of our key executives;

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labor shortages and disruptions;

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cyber-attacks and other security breaches of our information and technology systems; and

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other risks and uncertainties, including those described under the heading “Risk Factors” included in our most recent Annual Report, as supplemented by our Quarterly Reports on Form 10-Q.

Statements concerning mineral resource and mineral reserve estimates may also be deemed to constitute forward-looking information to the extent that such statements involve estimates of the mineralization that may be encountered if a property is developed.

With respect to forward-looking information contained or incorporated by reference herein, the Company has applied several material factors or assumptions including, but not limited to, certain assumptions as to production rates, operating cost, recovery and metal costs; that any additional financing needed will be available when needed on reasonable terms; that the current exploration, development, environmental and other objectives concerning the Project can be achieved and that the Company’s other corporate activities will proceed as expected; that the formal review process under the National Environmental Policy Act (“NEPA”) (including a joint review process involving the United States Forest Service (“USFS” or “Forest Service”), the State of Idaho and other agencies and regulatory bodies) as well as the environmental impact statements will proceed in a timely manner and as expected; that the progression of the litigation involving the Nez Perce Tribe will proceed in a timely manner and as expected; that the current price and demand for gold and other metals will be sustained or will improve; that general business and economic conditions will not change in a materially adverse manner and that all necessary governmental approvals for the planned exploration, development and environmental protection activities on the Project will be obtained in a timely manner and on acceptable terms; and that the continuity of economic and political conditions and operations of the Company will be sustained.

These risks are not exhaustive. Because of these risks and other uncertainties, our actual results, performance or achievement, or industry results, may be materially different from the anticipated or estimated results discussed in the forward-looking statements in this prospectus supplement, the accompanying prospectus, and the information incorporated by reference herein and therein. Factors that may cause actual results to differ materially from current expectations include, among other things, those described under the heading “Risk Factors” in our Annual Report on Form 10-K, as supplemented by our Quarterly Reports on Form 10-Q, and discussed elsewhere in this prospectus supplement, the accompanying prospectus, and the information incorporated by reference herein or therein. New risk factors emerge from time to time, and it is not possible for our management to predict all risk factors nor can we assess the effects of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in, or implied by, any forward-looking statements. Our past results of operations are not necessarily indicative of our future results. You should not rely on any forward-looking statements, which represent our beliefs, assumptions and estimates only as of the dates on which they were made, as predictions of future events. We undertake no obligation to update these forward-looking statements, even though circumstances may change in the future, except as required under applicable securities laws. We qualify all of our forward-looking statements by these cautionary statements.

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PROSPECTUS SUPPLEMENT SUMMARY

The following summary highlights information contained elsewhere in this prospectus supplement or the documents incorporated by reference herein. This summary is not complete and does not contain all of the information you should consider before investing in our securities. You should read the entire prospectus supplement and the accompanying prospectus, including each of the documents incorporated by reference herein or therein, carefully, including the “Risk Factors” and “Cautionary Note Regarding Forward Looking Statements” sections of this prospectus supplement, and “Risk Factors” in our Annual Report on Form 10-K, as such risk factors may be amended, updated or modified periodically in our Quarterly Reports on Form 10-Q that we file with the SEC, and any amendment or update thereto reflected in subsequent filings with the SEC and incorporated herein by reference.

Overview

We are a development-stage company engaged in acquiring mining properties with the intention of exploring, evaluating and placing them into production, if warranted. Currently, our principal business is the exploration and, if warranted and subject to receipt of required permitting, redevelopment, restoration and operation of the Stibnite Gold Project. The Stibnite Gold Project is one of the highest-grade, open pit gold deposits in the United States and is designed to apply a modern, responsible mining approach to restore an abandoned mine site and produce both gold and the only mined source of antimony in the United States. We are currently undertaking an extensive permitting process for redevelopment and restoration of the Project.

Corporate Information

We were incorporated under the Business Corporations Act (British Columbia) (the “BCBCA”) on February 22, 2011 under the name “Midas Gold Corp.” We changed our name to “Perpetua Resources Corp.” on February 15, 2021. Our headquarters are located at Suite 201 — 405 South 8th Street, Boise, Idaho 83702, and our telephone number is (208) 901-3060. Our website address is www.perpetuaresources.com. The information contained on, or that can be accessed through, our website is not part of, and is not incorporated into, this prospectus supplement. We have included our website address in this prospectus supplement solely as an inactive textual reference.

Perpetua, the Perpetua logo and our other registered or common law trademarks, service marks or trade names appearing in this prospectus are the property of Perpetua. Other trademarks, service marks and trade names used in this prospectus are the property of their respective owners.

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THE OFFERING

Common shares offered by us

Common shares having an aggregate offering price of up to $20,000,000.

Plan of Distribution

Subject to the terms and conditions of the Sales Agreement, Cantor may sell common shares by any method permitted by law deemed to be an “at the market offering” as defined in Rule 415(a)(4) promulgated under the Securities Act. See “Plan of Distribution” on page S-13 of this prospectus supplement.

Use of Proceeds

We intend to use the net proceeds from this offering, if any, for general corporate purposes, which may include, among other things, general corporate, legal and expenses in connection with early restoration activities under the Administrative Settlement and Order on Consent (“ASAOC”). See “Use of Proceeds” on page S-12 of this prospectus supplement.

Risk Factors

Before deciding to invest in our common shares, you should carefully review “Risk Factors” beginning on page S-8 of this prospectus supplement, the “Risk Factors” sections in our Annual Report on Form 10-K and any subsequent Quarterly Reports filed on Form 10-Q, and any amendment or update thereto reflected in subsequent filings with the SEC, which are incorporated by reference herein as well as “Risk Factors” in this prospectus supplement and other information included and incorporated by reference in this prospectus supplement and the accompanying prospectus.

Listing on Nasdaq and TSX

“PPTA”

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RISK FACTORS

Investing in our common shares involves a high degree of risk. Please see the risks described below in addition to the risk factors included in our most recent Annual Report on Form 10-K, as updated and supplemented from time to time, and in our subsequent Quarterly Reports on Form 10-Q and other information that we file from time to time with the SEC. Such risks are not the only risks we face. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial may also materially adversely affect us and the market value of our common shares. The risks described could affect our business, financial condition, liquidity, results of operations, prospects, and the market value of the common shares. In such a case, you may lose all or part of your original investment. You should consider carefully the risks described below and in our Annual Report on Form 10-K and any subsequent Quarterly Reports filed on Form 10-Q, as well as other information and data set forth in this prospectus supplement, the accompanying prospectus and the documents incorporated by reference herein and therein before making an investment decision with respect to our common shares.

Risks Related to This Offering

You may lose some or all of your investment in the Company.

An investment in the common shares is speculative and may result in the loss of an investor’s entire investment. Only potential investors who are experienced in high risk investments and who can afford to lose their entire investment should consider an investment in the Company.

We will have broad discretion in the use of the net proceeds from this offering and may not use them effectively.

We currently intend to use the net proceeds from this offering, if any, for general corporate purposes, which may include, among other things, general corporate, legal and ASAOC expenses in connection with early restoration activities, as further described in the section of this prospectus supplement entitled “Use of Proceeds”. We will have broad discretion in the application of the net proceeds in the category of general corporate purposes and investors will be relying on the judgment of our management regarding the application of the proceeds of this offering.

The precise amount and timing of the application of these proceeds will depend upon a number of factors, such as the timing and progress of the Project, our funding requirements and the availability and costs of other funds. As of the date of this prospectus supplement, we cannot specify with certainty all of the particular uses for the net proceeds to us from this offering. Depending on the outcome of the permitting process in connection with the Project and other unforeseen events, our plans and priorities may change and we may apply the net proceeds of this offering, if any, in different manners than we currently anticipate. The failure by our management to apply these funds effectively could harm our business, financial condition and results of operations. Pending their use, we may invest the net proceeds from this offering, if any, in short-term, interest-bearing instruments. These investments may not yield a favorable return to our shareholders.

The actual number of shares we will issue under the Sales Agreement, at any one time or in total, is uncertain.

Subject to certain limitations in the Sales Agreement and compliance with applicable law, we have the discretion to deliver placement notices to Cantor at any time throughout the term of the Sales Agreement. The number of shares that are sold by Cantor, if any, after delivering a placement notice will fluctuate based on the market price of the common shares during the sales period and limits we set with Cantor.

You may experience future dilution as a result of future equity offerings or if we issue shares subject to options, warrants, stock awards or other arrangements.

In order to raise additional capital, we may in the future offer additional common shares or other securities convertible into or exchangeable for our common shares at prices that may not be the same as the price per share in this offering. We may sell shares or other securities in any other offering at a price per share that is less than the price per common share paid by investors in this offering, and investors purchasing common shares or other securities in the future could have rights superior to existing shareholders. The sale of additional common shares or other securities convertible into or exchangeable for common shares would dilute all of our shareholders. The price per share at which we sell additional common shares, or securities

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convertible or exchangeable into common shares, in future transactions may be higher or lower than the price per share paid by investors in this offering.

Our ability to continue the exploration, permitting, development, and construction of the Project, and to continue as a going concern, will depend in part on our ability to obtain suitable financing.

We have limited financial resources. We will need external financing to develop and construct the Project and to complete the permitting process. Although the Company’s current capital resources and liquidity include up to $24.8 million in funding awarded in December 2022 under the Technology Investment Agreement (“TIA”) pursuant to Title III of the Defense Production Act (“DPA”), such funding is available only for the specified costs related to permitting, early restoration activities and advancing construction readiness and is not available to fund the Company’s costs pursuant to its ASAOC obligations and certain corporate expenses. The Company’s latest liquidity forecast indicates that available cash resources are expected to be exhausted in the first quarter of 2024 due to increases to anticipated costs for the Company’s ASAOC obligations in 2023. On April 13, 2023, after conducting a competitive bidding process, the Company announced it selected Iron Woman Construction and Environmental Services to conduct certain environmental improvements pursuant to the Company’s obligations under the ASAOC. The bid terms, together with scope changes, inflation and increased estimates for fuel usage related to the restoration activities, resulted in an increase to the Company’s forecasted amounts for ASAOC restoration activities for 2023. In addition to this anticipated increase to our ASAOC obligations, we expect to incur other costs in the foreseeable future that are not eligible for DPA funding reimbursement and may incur further unanticipated increases to costs under our ASAOC obligations as a result of inflation, fuel or labor costs or other factors The Company continues to explore various funding opportunities, which may include the issuance of additional equity, new debt, or project specific debt; government funding; and/or other financing opportunities. Although the Company entered into the Sales Agreement with respect to this offering, sales under the program are subject to certain conditions, including market conditions, and there is no assurance that the Company will be able to raise funds under the program, at acceptable share prices or at all. If additional financing is not secured before year end 2023, the Company would no longer be able to meet its ongoing obligations or progress critical permitting efforts.

In addition, according to the technical report summary, the total initial capital cost estimate for the Project is approximately $1,263 million. These cost estimates may change materially and our failure to obtain sufficient financing could result in the delay or indefinite postponement of exploration, permitting, development, construction, or production at the Project. The cost and terms of such financing may significantly reduce the expected benefits from development of the Project and/or render such development uneconomic. There can be no assurance that additional capital or other types of financing will be available when needed or that, if available, the terms of such financing will be favorable. Our failure to obtain financing could have a material adverse effect on our growth strategy and results of operations and financial condition.

The trading price for the Company’s securities is volatile.

The market prices for the securities of mining companies, including the Company, have historically been highly volatile. The market has from time to time experienced significant price and volume fluctuations that are unrelated to the operating performance of any particular company. In addition, because of the nature of the Company’s business, certain factors such as the Company’s announcements and the public’s reaction, operating performance and the performance of competitors and other similar companies, fluctuations in the market prices of the Company’s resources, government regulations, changes in estimates or recommendations by research analysts who track the Company’s securities or securities of other companies in the resource sector, general market conditions, announcements relating to litigation, the arrival or departure of key personnel and the factors listed under the heading “Cautionary Note Regarding Forward-Looking Statements” can have an adverse impact on the market price of the common shares.

Any negative change in the public’s perception of our prospects could cause the price of our securities, including the price of the common shares, to decrease dramatically. Furthermore, any negative change in the public’s perception of the prospects of mining companies in general could depress the price of our securities, including the price of the common shares, regardless of the Company’s results. Following significant declines

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in the market price of our securities, securities class-action litigation is often instituted. Litigation of this type, if instituted, could result in substantial costs and a diversion of the Company’s management’s attention and resources.

The market price of the common shares may be affected by many other variables which are not directly related to our success and are, therefore, not within our control, including other developments that affect the market for all resource sector securities, the breadth of the public market for the common shares and the attractiveness of alternative investments.

The common shares offered hereby will be sold by any method deemed to be an “at the market offering,” and investors who buy shares at different times will likely pay different prices.

Investors who purchase shares in this offering at different times will likely pay different prices, and so they may experience different levels of dilution and different outcomes in their investment results. We will have discretion, subject to market demand, to vary the timing, prices, and numbers of shares sold in this offering. In addition, there is no minimum or maximum sales price for shares to be sold in this offering. Investors may experience a decline in the value of the shares they purchase in this offering as a result of sales made at prices lower than the prices they paid.

Sales of a significant number of our common shares in the public markets, or the perception that such sales could occur, could depress the market price of our common shares.

Sales of a substantial number of our common shares in the public markets, or the perception that such sales could occur, could depress the market price of our common shares and impair our ability to raise capital through the sale of additional equity securities. We have agreed, without the prior written consent of Cantor, and subject to certain exceptions set forth in the Sales Agreement, not to sell or otherwise dispose of any common shares or securities convertible into or exchangeable for common shares, warrants or any rights to purchase or acquire common shares during the period beginning on the fifth trading day immediately prior to the delivery of any placement notice delivered by us to Cantor and ending on the fifth trading day immediately following the final settlement date with respect to the shares sold pursuant to such notice. We have further agreed, subject to certain exceptions set forth in the Sales Agreement, not to sell or otherwise dispose of any common shares or securities convertible into or exchangeable for common shares, warrants or any rights to purchase or acquire common shares in any other “at the market offering” or continuous equity transaction prior to the termination of the Sales Agreement. Therefore, it is possible that we could issue and sell additional common shares in the public markets. We cannot predict the effect that future sales of our common shares would have on the market price of our common shares.

We have no history of paying dividends, do not expect to pay dividends in the immediate future and may never pay dividends.

Since incorporation, neither the Company nor any of our subsidiaries have paid any cash or other dividends on its common shares, and we do not expect to pay such dividends in the foreseeable future, as all available funds will be invested primarily to finance its mineral exploration programs.

Our largest shareholder has significant influence on us and may also affect the market price and liquidity of our securities.

Paulson & Co. Inc. (“Paulson”) holds in the aggregate 39.2% of the outstanding shares in Perpetua as of May 12, 2023. Accordingly, Paulson will have significant influence in determining the outcome of any corporate transaction or other matter submitted to the shareholders for approval, including mergers, consolidations, and the sale of all or substantially all of our assets and other significant corporate actions. Unless full participation of all shareholders takes place in such shareholder meetings, Paulson may be able to approve such matters itself. The concentration of ownership of the common shares by Paulson may: (i) delay or deter a change of control; (ii) deprive shareholders of an opportunity to receive a premium for their common shares as part of a sale of the Company; and (iii) affect the market price and liquidity of the common shares. Pursuant to the terms of the investor rights agreement dated March 17, 2016, as amended and restated on March 17, 2020, Paulson has the right to designate two member of our board of directors (the “Board”) so long as Paulson holds not less than 20% of our common shares and the right to designate one Board member

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so long as Paulson holds not less than 10% of our common shares. Christopher Papagianis and Marcelo Kim are Paulson’s nominees to the Board and Marcelo Kim was appointed Chairman of our Board in March of 2020.

As long as Paulson maintains its shareholdings in us, Paulson will have significant influence in determining the members of the Board. Without the consent of Paulson, we could be prevented from entering into transactions that are otherwise beneficial to us. The interests of Paulson may differ from or be adverse to the interests of our other shareholders. The effect of these rights and Paulson’s influence may impact the price that investors are willing to pay for our shares. If Paulson or its affiliates sell a substantial number of our common shares in the public market, the market price of the common shares could fall. The perception among the public that these sales will occur could also contribute to a decline in the market price of our common shares.

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USE OF PROCEEDS

We may issue and sell common shares having aggregate gross sales proceeds of up to $20,000,000 from time to time. Because there is no minimum offering amount required as a condition to close this offering, the actual total public offering amount, commissions and proceeds to us, if any, are not determinable at this time. This means that we may terminate this offering after raising only a small portion of the maximum offering amount set out above, or none at all.

We will retain broad discretion over the use of the net proceeds from the sale of the securities offered hereby. We intend to use the net proceeds from this offering, if any, for general corporate purposes, which may include, among other things, general corporate, legal and ASAOC expenses in connection with early restoration activities.

This expected use of our net proceeds from this offering represents our intentions based upon our current plans and business conditions, which could change in the future as our plans and business conditions evolve. The amounts and timing of our actual expenditures may vary significantly depending on numerous factors, including the factors described under “Risk Factors” in this prospectus supplement and in the documents incorporated by reference herein, and any unforeseen cash needs. As a result, our management will retain broad discretion over the allocation of the net proceeds from this offering, and investors will be relying on the judgment of our management regarding the application of the net proceeds from this offering.

Pending the uses described above, we plan to invest the net proceeds from this offering in short and intermediate term, interest bearing obligations, investment grade institutions, certificates of deposit or direct guaranteed obligations of the U.S. government.

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PLAN OF DISTRIBUTION

We have entered into a Controlled Equity OfferingSM Sales Agreement (the “Sales Agreement”), with Cantor Fitzgerald & Co. (“Cantor”). Pursuant to this prospectus supplement, we may offer and sell common shares having an aggregate gross sales price of up to $20,000,000 from time to time through Cantor acting as sales agent. A copy of the Sales Agreement has been filed as an exhibit to our Quarterly Report on Form 10-Q for the quarter ended March 31, 2023 and is incorporated by reference into this prospectus supplement.

Upon delivery of a placement notice and subject to the terms and conditions of the Sales Agreement, Cantor may sell common shares by any method permitted by law deemed to be an “at the market offering” as defined in Rule 415(a)(4) promulgated under the Securities Act. No common shares will be offered or sold in Canada through the TSX or any other trading market in Canada.

We may instruct Cantor not to sell common shares if the sales cannot be effected at or above the price designated by us from time to time. We or Cantor may suspend the offering of common shares upon notice and subject to other conditions.

We will pay Cantor commissions, in cash, for its service in acting as agent in the sale of our common shares. Cantor will be entitled to compensation at a commission rate of up to 3.0% of the aggregate gross proceeds per share sold under the Sales Agreement. Because there is no minimum offering amount required as a condition to close this offering, the actual total public offering amount, commissions and proceeds to us, if any, are not determinable at this time. We have also agreed to reimburse Cantor for certain specified expenses, including the fees and disbursements of their legal counsel in an amount not to exceed $60,000 and certain ongoing expenses. We estimate that the total expenses for the offering, excluding compensation and reimbursements payable to Cantor under the terms of the Sales Agreement, will be approximately $400,000.

Settlement for sales of the common shares will occur on the second business day (or first business day for sales occurring on or after May 28, 2024) following the date on which any sales are made, or on some other date that is agreed upon by us and Cantor in connection with a particular transaction, in return for payment of the net proceeds to us. Sales of our common shares as contemplated in this prospectus supplement will be settled through the facilities of The Depository Trust Company or by such other means as we and Cantor may agree upon. There is no arrangement for funds to be received in an escrow, trust or similar arrangement.

Cantor is not registered as an investment dealer in any Canadian jurisdiction and, accordingly, will only sell the common shares in the United States, and will not, directly or indirectly, solicit offers to purchase or sell the common shares in Canada.

Cantor will use its commercially reasonable efforts, consistent with its sales and trading practices, to solicit offers to purchase the common shares under the terms and subject to the conditions set forth in the Sales Agreement. In connection with the sale of the common shares on our behalf, Cantor may be deemed to be an “underwriter” within the meaning of the Securities Act and the compensation of Cantor may be deemed to be underwriting commissions or discounts. We have agreed to provide indemnification and contribution to Cantor against certain civil liabilities, including liabilities under the Securities Act.

The offering of the common shares pursuant to the Sales Agreement will terminate upon the termination of the Sales Agreement as permitted therein. We and Cantor may each terminate the Sales Agreement at any time upon ten days’ prior notice.

Cantor and its affiliates may in the future provide various investment banking, commercial banking and other financial services for us and our affiliates, for which services they may in the future receive customary fees. To the extent required by Regulation M, Cantor will not engage in any market making activities involving our common shares while the offering is ongoing under this prospectus supplement.

This prospectus supplement and the accompanying prospectus may be made available in electronic format on a website maintained by Cantor, and Cantor may distribute this prospectus supplement and the accompanying prospectus electronically.

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MATERIAL UNITED STATES FEDERAL INCOME TAX CONSEQUENCES

The following is a general summary of material U.S. federal income tax consequences of the acquisition, ownership and disposition of our common shares for U.S. Holders and Non-U.S. Holders (each as defined below) that acquire our common shares pursuant to this prospectus supplement. This summary is based upon the provisions of the U.S. Internal Revenue Code of 1986, as amended (the “Code”), applicable U.S. Treasury regulations promulgated under the Code (the “Treasury Regulations”), administrative pronouncements or practices and judicial decisions, all as of the date hereof. Future legislative, judicial or administrative modifications, revocations or interpretations, which may or may not be retroactive, may result in U.S. federal income tax consequences significantly different from those discussed herein. This summary is not binding on the Internal Revenue Service (the “IRS”). No ruling has been or will be sought or obtained from the IRS with respect to any of the U.S. federal tax consequences discussed herein. There can be no assurance that the IRS will not challenge any of the conclusions described herein or that a U.S. court will not sustain such a challenge. This summary assumes that our common shares are held as capital assets within the meaning of Section 1221 of the Code (generally, property held for investment).

This summary does not address U.S. federal income tax consequences to holders subject to special rules, including holders that (i) are banks, financial institutions or insurance companies; (ii) are regulated investment companies or real estate investment trusts; (iii) are brokers, dealers or traders in securities or currencies; (iv) are tax-exempt organizations or governmental organizations; (v) hold our common shares as part of hedges, straddles, constructive sales, conversion transactions or other integrated investments; (vi) have a functional currency other than the U.S. dollar; (vii) own or have owned directly, indirectly or constructively more than 5% or more of our common shares; (viii) are controlled foreign corporations, passive foreign investment companies or corporations that accumulate earnings to avoid U.S. federal income tax; (ix) are partnerships or other pass-through entities for U.S. federal income tax purposes; (x) are tax-qualified retirement plans; (xi) are “qualified foreign pension funds” as defined in Section 897(l)(2) of the Code (or any entities all the interests of which are held by a qualified foreign pension fund); (xii) are traders in securities that use the mark-to-market method of accounting for U.S. federal income tax purposes; (xiii) acquired our common stock through the exercise of employee stock options or otherwise as compensation or through a tax-qualified retirement plan or (xiv) are certain former citizens or long-term residents of the United States. In addition, this summary does not address any U.S. federal estate, gift or other non-income tax, or any state, local or non-U.S. tax consequences of the acquisition, ownership or disposition of our common shares, or the impact of the U.S. federal alternative minimum tax or the U.S. Medicare contribution tax on net investment income.

If an entity or arrangement treated as a partnership for U.S. federal income tax purposes holds our common shares, the U.S. federal income tax treatment of a partner in such partnership generally will depend on the status of such partner and on the activities of the partner and the partnership. A person that is a partner of an entity or an arrangement treated as a partnership for U.S. federal income tax purposes where such entity or arrangement holds our common shares should consult its own tax advisor.

THIS SUMMARY IS FOR INFORMATIONAL PURPOSES ONLY AND IS NOT TAX ADVICE. PROSPECTIVE INVESTORS ARE URGED TO CONSULT THEIR OWN TAX ADVISORS REGARDING THE APPLICATION OF THE U.S. FEDERAL INCOME TAX RULES TO THEIR PARTICULAR CIRCUMSTANCES, AS WELL AS THE STATE, LOCAL AND NON-U.S. TAX CONSEQUENCES TO THEM OF THE ACQUISITION, OWNERSHIP AND DISPOSITION OF OUR COMMON SHARES.

Tax Classification of the Company as a U.S. Domestic Corporation

The Company is classified as a U.S. domestic corporation for U.S. federal income tax purposes under Section 7874 of the Code. A number of significant and complicated U.S. federal income tax consequences may result from such classification, and this summary does not attempt to describe all such U.S. federal income tax consequences. Section 7874 of the Code and the Treasury Regulations promulgated thereunder do not address all the possible tax consequences that arise from the Company being treated as a U.S. domestic corporation for U.S. federal income tax purposes. Accordingly, there may be additional or unforeseen U.S. federal income tax consequences to the Company that are not discussed in this summary.

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Generally, the Company is subject to U.S. federal income tax on its worldwide taxable income (regardless of whether such income is “U.S. source” or “foreign source”) and is required to file a U.S. federal income tax return annually with the IRS. The Company is also subject to tax in Canada. It is unclear how the foreign tax credit rules under the Code will operate in certain circumstances, given the treatment of the Company as a U.S. domestic corporation for U.S. federal income tax purposes and the taxation of the Company in Canada. Accordingly, it is possible that the Company will be subject to double taxation with respect to all or part of its taxable income. It is anticipated that such U.S. and Canadian tax treatment will continue indefinitely and that our common shares will be treated indefinitely as shares in a U.S. domestic corporation for U.S. federal income tax purposes.

U.S. Holders

This section is addressed to U.S. Holders that acquire our common shares pursuant to this offering. As used herein, “U.S. Holder” means a beneficial owner of our common shares that is, for U.S. federal income tax purposes, (i) an individual who is a citizen or resident of the United States; (ii) a corporation (or entity classified as a corporation for U.S. federal income tax purposes) created or organized under the laws of the United States or any political subdivision thereof, including any state thereof and the District of Columbia; (iii) an estate, the income of which is subject to U.S. federal income tax regardless of its source; or (iv) a trust that (a) is subject to the primary jurisdiction of a court within the United States and for which one or more U.S. persons have authority to control all substantial decisions or (b) has a valid election in effect under applicable Treasury Regulations to be treated as a U.S. person.

Distributions

The Company does not anticipate paying distributions to holders of our common shares in the foreseeable future. However, if the Company decides to make any such distributions, such distributions (including the amount of any Canadian tax withheld with respect to such distributions) will be taxable as dividend income when paid to the extent of the Company’s current or accumulated earnings and profits, as determined for U.S. federal income tax purposes. To the extent that the amount of a distribution with respect to our common shares exceeds the Company’s current and accumulated earnings and profits, such distribution will be treated first as a tax-free return of capital to the extent of the U.S. Holder’s adjusted tax basis in our common shares, and thereafter as capital gain, which will be long-term capital gain if the U.S. Holder has held our common shares at the time of the distribution for more than one year. Distributions on our common shares constituting dividend income paid to U.S. Holders that are U.S. corporations may qualify for the dividends received deduction, subject to various limitations. Distributions on our common shares constituting dividend income paid to U.S. Holders that are individuals may qualify for the reduced rates applicable to qualified dividend income.

Sale, Exchange, Redemption or Other Disposition

A U.S. Holder generally will recognize capital gain or loss on a sale, exchange, redemption (other than a redemption that is treated as a distribution) or other disposition of our common shares equal to the difference between the amount realized upon the sale, exchange, redemption or other disposition and the U.S. Holder’s adjusted tax basis in such shares. Such capital gain or loss will be long-term capital gain or loss if the U.S. Holder’s holding period for such shares exceeds one year at the time of the sale, exchange, redemption or other disposition. Long-term capital gains of non-corporate U.S. Holders are generally taxed at a lower maximum marginal tax rate than the maximum marginal tax rate applicable to ordinary income. The deductibility of net capital losses by individuals and corporations is subject to limitations.

Foreign Tax Credit Limitations

Because it is anticipated that the Company will be subject to tax both as a U.S. domestic corporation and as a Canadian corporation, a U.S. Holder may pay, through withholding, Canadian tax, as well as U.S. federal income tax, with respect to distributions paid on our common shares. For U.S. federal income tax purposes, a U.S. Holder may elect for any taxable year to receive either a credit or a deduction for all foreign income taxes paid by the holder during the year. Complex limitations apply to the foreign tax credit, including a general limitation that the credit cannot exceed the proportionate share of a taxpayer’s U.S. federal income tax that

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the taxpayer’s foreign source taxable income bears to the taxpayer’s worldwide taxable income. In applying this limitation, items of income and deduction must be classified, under complex rules, as either foreign source or U.S. source. The status of the Company as a U.S. domestic corporation for U.S. federal income tax purposes will cause dividends paid by the Company to be treated as U.S. source rather than foreign source income for this purpose. As a result, by virtue of the U.S. source character of a dividend paid by the Company and the U.S. foreign tax credit limitation, a foreign tax credit may be unavailable for any Canadian tax paid on distributions received from the Company. Similarly, to the extent a sale, exchange, redemption or other disposition of our common shares by a U.S. Holder results in Canadian tax payable by the U.S. Holder (for example, if our common shares constitute taxable Canadian property within the meaning of the Tax Act (as defined below)), a U.S. foreign tax credit may be unavailable to the U.S. Holder for such Canadian tax. In each case, however, the U.S. Holder should be able to take a deduction for the U.S. Holder’s Canadian tax paid, provided that the U.S. Holder has not elected to credit other foreign taxes during the same taxable year. The foreign tax credit rules are complex, and their application in connection with Section 7874 of the Code in the presence of the United States-Canada income tax treaty is not entirely clear. Each U.S. Holder should consult its own tax advisor regarding these rules.

Foreign Currency

The amount of any distribution paid to a U.S. Holder in foreign currency, or the amount of proceeds paid in foreign currency on the sale, exchange, redemption or other disposition of our common shares, generally will be equal to the U.S. dollar value of such foreign currency based on the exchange rate applicable on the date of receipt (regardless of whether such foreign currency is converted into U.S. dollars at that time). A U.S. Holder will have a basis in the foreign currency equal to its U.S. dollar value on the date of receipt. Any U.S. Holder that converts or otherwise disposes of the foreign currency after the date of receipt may have a foreign currency exchange gain or loss that would be treated as ordinary income or loss, and generally will be U.S. source income or loss for foreign tax credit purposes. Different rules apply to U.S. Holders that use the accrual method of tax accounting. A U.S. Holder that recognizes foreign currency exchange loss with respect to our common shares would be required to report the loss on IRS Form 8886 (Reportable Transaction Disclosure Statement) if the loss exceeds the thresholds set forth in the applicable Treasury Regulations. For individuals and trusts, this loss threshold is $50,000 in any single year. For other types of taxpayers, the thresholds are higher. U.S. Holders should consult their own tax advisors regarding the rules concerning foreign currency exchange gain or loss.

Information Reporting and Backup Withholding

Information returns will be filed with the IRS in connection with payments of dividends and the proceeds from a sale, exchange, redemption other disposition of our common shares to a U.S. Holder that is not an exempt recipient, such as a corporation. Certain U.S. Holders may be subject to backup withholding with respect to the payment of dividends on our common shares and to certain payments of the proceeds from the sale, exchange, redemption or other disposition of our common shares, unless such U.S. Holders provide proof of an applicable exemption or a correct taxpayer identification number and otherwise comply with applicable requirements of the backup withholding rules.

Any amount withheld under the backup withholding rules from a payment to a U.S. Holder is allowable as a credit against such U.S. Holder’s U.S. federal income tax, which may entitle the U.S. Holder to a refund, provided that the U.S. Holder timely provides the required information to the IRS. Moreover, certain penalties may be imposed by the IRS on a U.S. Holder that is required to furnish information but does not do so in the proper manner.

Non-U.S. Holders

This section is addressed to Non-U.S. Holders that acquire our common shares pursuant to this offering. As used herein, “Non-U.S. Holder” means any beneficial owner of our common shares that is neither a U.S. Holder nor an entity or arrangement treated as a partnership for U.S. federal income tax purposes.

Distributions

The Company does not anticipate paying distributions to holders of our common shares in the foreseeable future. However, subject to the discussions under “Information Reporting and Backup Withholding” below

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and under “FATCA” below, distributions treated as dividends (as described above under “U.S. Holders — Distributions”) paid to a Non-U.S. Holder generally will be subject to U.S. federal withholding tax at a rate of 30% of the gross amount of the dividends (or such lower rate specified by an applicable income tax treaty, provided the Non-U.S. Holder furnishes a valid IRS Form W-8BEN or W-8BEN-E (or other applicable documentation) to the applicable withholding agent, certifying qualification for the lower treaty rate), unless the dividend is effectively connected with the Non-U.S. Holder’s conduct of a trade or business within the United States and the Non-U.S. Holder furnishes a valid IRS Form W-8ECI (or other applicable documentation) to the applicable withholding agent. A Non-U.S. Holder that does not timely furnish the required documentation for a reduced treaty rate, but that qualifies for a reduced treaty rate, may obtain a refund of any excess amounts withheld by timely filing an appropriate claim for refund with the IRS. Non-U.S. Holders should consult their own tax advisors regarding their entitlement to benefits under any applicable income tax treaty. If the Company is a USRPHC (as defined below) and does not qualify for the Regularly Traded Exception (as defined below), distributions that constitute a return of the Non-U.S. Holder’s investment will be subject to withholding unless an application for a withholding certificate is filed with the IRS to reduce or eliminate such withholding.

Dividends paid to a Non-U.S. Holder that are effectively connected with the Non-U.S. Holder’s conduct of a trade or business in the United States (and, where an income tax treaty applies, are attributable to a U.S. permanent establishment of the Non-U.S. Holder) generally will be exempt from the withholding tax described above, and instead will be subject to U.S. federal income tax on a net income basis at regular graduated U.S. federal income tax rates and, if the Non-U.S. Holder is a corporation, may be subject to an additional U.S. branch profits tax at a gross rate equal to 30% of its effectively connected earnings and profits for that taxable year (subject to any exemption or lower rate as may be specified by an applicable income tax treaty).

Sale, Exchange, Redemption or Other Disposition

Subject to the discussions below under “— Information Reporting and Backup Withholding”, a Non-U.S. Holder will not be subject to U.S. federal income tax on any gain realized upon the sale, exchange, redemption or other disposition of our common shares unless:

•

the Non-U.S. Holder is a non-resident alien individual present in the United States for 183 days or more during the taxable year of the sale, exchange, redemption or other disposition and certain other requirements are met;

•

the gain is effectively connected with a U.S. trade or business carried on by the Non-U.S. Holder (and, where an income tax treaty applies, is attributable to a U.S. permanent establishment of the Non-U.S. Holder); or

•

our common shares constitute United States real property interests (“USRPIs”) by reason of the Company’s status as a United States real property holding corporation (a “USRPHC”) for U.S. federal income tax purposes at any time during the shorter of (i) the five-year period ending on the date of the sale, exchange, redemption or other disposition and (ii) the Non-U.S. Holder’s holding period for the common shares (the “Relevant Period”), and, in the case where our common shares are regularly traded on an established securities market, the Non-U.S. Holder has owned, actually or constructively, more than 5% of our common shares during the Relevant Period.

Gain described in the first bullet point above will be subject to U.S. federal income tax at a rate of 30% (or such lower rate as may be specified by an applicable income tax treaty), which may be offset by U.S. source capital losses of the Non-U.S. Holder (even though the individual is not considered a resident of the United States), provided the Non-U.S. Holder has timely filed U.S. federal income tax returns with respect to such losses.

Gain described in the second bullet point above will be subject to U.S. federal income tax on the net gain from the sale, exchange, redemption or other disposition at regular graduated U.S. federal income tax rates and, if the Non-U.S. Holder is a corporation, may be subject to an additional U.S. branch profits tax at a gross rate equal to 30% of its effectively connected earnings and profits for that taxable year (subject to any exemption or lower rate as may be specified by an applicable income tax treaty).

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With respect to the third bullet point above, the Company believes it currently is, and anticipates remaining, a USRPHC. Because the determination of whether the Company is a USRPHC depends on the fair market value of the Company’s USRPIs relative to the fair market value of the Company’s non-U.S. real property interests and other business assets, there can be no assurance the Company currently is a USRPHC or will remain one in the future. Even if the Company is or were to become a USRPHC, gain arising from the sale, exchange, redemption or other disposition by a Non-U.S. Holder of our common shares will not be subject to U.S. federal income tax if our common shares are “regularly traded” (as defined by applicable Treasury Regulations) on an established securities market (the “Regularly Traded Exception”), and such Non-U.S. Holder has owned, actually and constructively, 5% or less of our common shares during the Relevant Period. If the Regularly Traded Exception is not satisfied, a Non-U.S. Holder will be taxed as if any gain or loss were effectively connected with the conduct of a trade or business (as described in the preceding paragraph), and a 15% withholding tax generally would apply to the gross proceeds from the sale, exchange, redemption or other disposition of our common shares. A Non-U.S. Holder that has owned, actually or constructively, more than 5% of our common shares during the Relevant Period will be taxed as if any gain or loss were effectively connected with the conduct of a trade or business (as described in the preceding paragraph), even if the Regularly Traded Exception is satisfied.

Non-U.S. Holders should consult with their own tax advisors regarding the consequences to them of investing in a USRPHC and potentially applicable income tax treaties that may provide for different rules.

Information Reporting and Backup Withholding

Payments of dividends on our common shares will not be subject to backup withholding, provided the applicable withholding agent does not have actual knowledge or reason to know the holder is a United States person and the holder either certifies its non-U.S. status, such as by furnishing a valid IRS Form W-8BEN or W-8BEN-E, or otherwise establishes an exemption. However, information returns are required to be filed with the IRS in connection with any dividends on our common shares paid to Non-U.S. Holders, regardless of whether any tax was actually withheld. In addition, proceeds from the sale, exchange, redemption or other disposition of our common shares within the United States or conducted through certain U.S.-related brokers generally will not be subject to backup withholding or information reporting if the applicable withholding agent receives the certification described above and does not have actual knowledge or reason to know that the holder is a United States person, or the holder otherwise establishes an exemption. Proceeds from a sale, exchange, redemption or other disposition of our common shares conducted through a non-U.S. office of a non-U.S. broker generally will not be subject to backup withholding or information reporting.

Copies of information returns that are filed with the IRS may also be made available under the provisions of an applicable treaty or agreement to the tax authorities of the country in which the Non-U.S. Holder resides or is established.

Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules may be allowed as a refund or a credit against a Non-U.S. Holder’s U.S. federal income tax liability, provided the required information is timely furnished to the IRS.

FATCA

Withholding taxes may be imposed under Sections 1471 to 1474 of the Code, and the Treasury Regulations and administrative guidance issued thereunder (“FATCA”) on certain types of payments made to non-U.S. financial institutions and certain other non-U.S. entities. Specifically, a 30% withholding tax may be imposed on “withholdable payments” (as defined in the Code), including dividends on our common shares paid to a “foreign financial institution” or a “non-financial foreign entity” (each as defined in the Code), unless (i) the foreign financial institution undertakes certain diligence and reporting obligations, (ii) the non-financial foreign entity either certifies it does not have any “substantial United States owners” (as defined in the Code) or furnishes identifying information regarding each substantial United States owner, or (iii) the foreign financial institution or non-financial foreign entity otherwise qualifies for an exemption from these rules. If the payee is a foreign financial institution and is subject to the diligence and reporting requirements in (i) above, it must enter into an agreement with the U.S. Department of the Treasury requiring, among other things, that it undertake to identify accounts held by certain “specified United States persons” or “United States-owned foreign entities” (each as defined in the Code), annually report certain information about such

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accounts and withhold 30% on certain payments to non-compliant foreign financial institutions and certain other account holders. Foreign financial institutions located in jurisdictions that have an intergovernmental agreement with the United States governing FATCA may be subject to different rules.

While withholdable payments would have originally included payments of gross proceeds from the sale, exchange, redemption or other disposition of our common shares, proposed Treasury Regulations provide that such payments of gross proceeds do not constitute withholdable payments. Taxpayers generally may rely on these proposed Treasury Regulations until they are revoked or final Treasury Regulations are issued.

Prospective investors should consult their own tax advisors regarding the potential application of withholding under FATCA to their investment in our common shares.

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MATERIAL CANADIAN FEDERAL INCOME TAX CONSIDERATIONS

Subject to the limitations and qualifications stated herein, the following summary is, as of the date of this prospectus supplement, a general summary of the principal Canadian federal income tax considerations under the Income Tax Act (Canada) (the “Tax Act”) generally applicable to an investor who acquires, as beneficial owner, a common share pursuant to the offering and who, for the purposes of the Tax Act and at all relevant times: (i) is not, and is not deemed to be, resident in Canada, (ii) does not use or hold (and is not deemed to use or hold) the common shares in carrying on a business in Canada, (iii) deals at arm’s length with the Company and Cantor, (iv) is not “affiliated” (within the meaning of the Tax Act) with the Company, Cantor or any subsequent purchaser of common shares and (v) acquires and holds the common shares as capital property (a “Holder”). Generally, the common shares will be considered to be capital property to a Holder thereof provided that the Holder does not use or hold the common shares in the course of carrying on a business of trading or dealing in securities and such Holder has not acquired them in one or more transactions considered to be an adventure or concern in the nature of trade.

Special rules, which are not discussed in this summary, may apply to a Holder that is an insurer carrying on business in Canada and elsewhere or is an “authorized foreign bank” (as defined in the Tax Act). Such Holders should consult their own tax advisors.

This summary is based upon the current provisions of the Tax Act and the regulations thereunder, counsel’s understanding of the current published administrative policies and assessing practices of the Canada Revenue Agency (the “CRA”), and all specific proposals to amend the Tax Act and the regulations thereunder publicly announced by or on behalf of the Minister of Finance (Canada) prior to the date hereof (the “Tax Proposals”). This summary assumes that the Tax Proposals will be enacted as proposed; however, no assurance can be given that the Tax Proposals will be enacted as proposed or at all. This summary does not otherwise take into account or anticipate any changes in law or the CRA’s administrative policies or assessing practices, whether by legislative, governmental or judicial decision or action, nor does it take into account other federal or any provincial, territorial or foreign tax legislation or considerations.

This summary is of a general nature only, is not exhaustive of all possible Canadian federal income tax considerations and is not intended to be, nor should it be construed to be, legal or tax advice to any particular Holder. Accordingly, Holders should consult their own tax advisors with respect to their particular circumstances.

Currency Conversion

For purposes of the Tax Act, all amounts relating to the acquisition, holding or disposition of the common shares must be converted into Canadian dollars based on the exchange rate quoted by the Bank of Canada for the date such amounts arise or such other rate of exchange as is acceptable to the CRA.

Dividends

Dividends paid or credited or deemed to be paid or credited to a Holder by the Company on any common shares will be subject to Canadian withholding tax at the rate of 25% of the gross amount of the dividend unless such rate is reduced by the terms of an applicable income tax treaty or convention. For example, under the Canada-United States Tax Convention (1980), as amended (the “Canada-U.S. Treaty”), the rate of withholding tax on dividends paid or credited to a Holder who is resident in the United States for purposes of the Canada-U.S. Treaty, is the beneficial holder of the dividends, and is fully entitled to benefits under the Canada-U.S. Treaty (a “U.S. Holder”) is generally reduced to 15% of the gross amount of the dividend (or 5% in the case of a U.S. Holder that is a company beneficially owning at least 10% of the Company’s voting shares).

Dispositions of Common Shares

A Holder generally will not be subject to tax under the Tax Act in respect of a capital gain realized on the disposition or deemed disposition of a common share, nor will capital losses arising therefrom be recognized under the Tax Act, unless the common share constitutes “taxable Canadian property�� to the Holder for purposes of the Tax Act at the time of disposition, and the gain is not exempt from tax pursuant to the terms of an applicable income tax treaty or convention.

Provided the common shares are listed on a “designated stock exchange” as defined in the Tax Act (which currently includes the TSX and the Nasdaq), at the time of disposition, the common shares generally will not constitute taxable Canadian property of a Holder at that time, unless at any time during the 60 month period

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immediately preceding the disposition of such common shares, as applicable, the following two conditions are met concurrently: (i) 25% or more of the issued shares of any class or series of shares of the Company were owned by one or any combination of (a) the Holder, (b) persons with whom the Holder did not deal at arm’s length, or (c) partnerships in which persons referred to in (a) or (b) hold a membership interest (directly or indirectly through one or more partnerships); and (ii) more than 50% of the fair market value of the common shares was derived directly or indirectly from one or any combination of real or immovable property situated in Canada, “Canadian resource properties” (as defined in the Tax Act), “timber resource properties” (as defined in the Tax Act) or an option in respect of, an interest in, or for civil law a right in such properties, whether or not such property exists.

Even if a common share is “taxable Canadian property” to a Holder, such Holder may be exempt from tax under the Tax Act on the disposition of such common share by virtue of an applicable income tax treaty or convention.

A Holder’s whose common shares are taxable Canadian property should consult their own tax advisors regarding the tax and compliance considerations that may be relevant to them.

LEGAL MATTERS

Certain legal matters in connection with the offering will be passed upon by Cozen O’Connor LLP, Vancouver, British Columbia, with respect to Canadian legal matters. Vinson & Elkins L.L.P., New York, New York, represented the company with respect to U.S. legal matters. Cantor Fitzgerald & Co. is being represented in connection with this offering by Hunton Andrews Kurth LLP, Houston, Texas with respect to U.S. legal matters and Stikeman Elliott LLP, Toronto, Ontario, with respect to Canadian legal matters.

EXPERTS

The financial statements incorporated in this Prospectus by reference to Perpetua Resource Corp.’s Current Report on Form 8-K dated May 12, 2023 have been so incorporated in reliance on the report (which contains an explanatory paragraph with respect to the matters that raise substantial doubt about the Company’s ability to continue as a going concern as described in Note 1 to the financial statements) of PricewaterhouseCoopers LLP, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting.

The mineral resource and mineral reserve estimates and related information of the Company’s Stibnite Gold Project incorporated by reference herein are based upon analyses performed or overseen by the following Qualified Persons:

•

Richard Zimmerman, SME-RM and Art Ibrado, P.E. with M3 Engineering & Technology Corporation;

•

Garth Kirkham, P.Geo. with Kirkham Geosystems Ltd.;

•

Andrew Kelly, P.Eng. with Blue Coast Metallurgy Ltd.;

•

Grenvil Dunn, C.Eng. with Hydromet WA (Pty) Ltd.;

•

Chris Roos, P.E. and Scott Rosenthal P.E. with Value Consulting, Inc.;

•

Peter Kowalewski, P.E. with Tierra Group International, Ltd.; and

•

Christopher Dail, Exploration Manager for Perpetua Resources Idaho, Inc.

Such estimates and related information have been incorporated by reference herein in reliance upon the authority of such firms or individuals as experts in such matters.

Christopher Dail, C.P.G. is the Exploration Manager of the Company and serves as President and sole officer of Idaho Gold Resources Company, LLC, a wholly owned subsidiary of Perpetua. Mr. Dail has been granted stock options, restricted share units and performance share units of the Company in the course of his employment but these interests held by Mr. Dail in the Company has at all times represented less than 1% of the issued and outstanding common shares of the Company.

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PROSPECTUS

Perpetua Resources Corp.

$500,000,000

COMMON SHARES
PREFERRED SHARES
DEBT SECURITIES
WARRANTS
SUBSCRIPTION RECEIPTS
UNITS
and
24,771,542 COMMON SHARES OFFERED BY THE SELLING SHAREHOLDERS

From time to time, in one or more offerings, we may offer and sell our common shares, no par value (“Common Shares”), preferred shares, debt securities, warrants, subscription receipts, and units. In addition, any selling shareholders named in a prospectus supplement may offer and sell, from time to time, up to 24,771,542 Common Shares held by them and covered by this prospectus. We will not receive any proceeds from the sale of Common Shares by the selling shareholders.

We may offer and sell these securities from time to time in amounts, at prices and on terms to be determined by market conditions and other factors at the time of our offerings. This prospectus provides you with a general description of these securities and the general manner in which we will offer these securities. The specific terms of any securities that we offer will, if not included in this prospectus or information incorporated by reference herein, be included in a supplement to this prospectus. Any prospectus supplement may also add, update or change information contained in this prospectus.

Our common stock is listed on The Nasdaq Capital Market (the “Nasdaq”) and on the Toronto Stock Exchange (the “TSX”) under the symbol “PPTA.”

We are an “emerging growth company” as that term is used in the Jumpstart Our Business Startups Act of 2012, and, as such, have elected to avail ourselves of certain reduced public company reporting requirements for this prospectus and future filings.

Investing in our securities involves risk. Before you make an investment in our securities, you should read carefully this prospectus, the risks we describe in this prospectus and in any accompanying prospectus supplement, as well as the risk factors in the documents incorporated by reference into this prospectus and in any accompanying prospectus supplement before you invest. See “Risk Factors” beginning on page 6 of this prospectus.

We may sell the securities directly or to or through underwriters or dealers, and also to other purchasers or through agents. The names of any underwriters or agents that are included in a sale of securities to you, and any applicable commissions or discounts, will be stated in any accompanying prospectus supplement. In addition, the underwriters, if any, may over-allot a portion of the securities.

Neither the U.S. Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this prospectus is November 2, 2022.

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	ABOUT THIS PROSPECTUS					1
	CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS					1
	THE COMPANY					3
	IMPLICATIONS OF BEING AN EMERGING GROWTH COMPANY					3
	WHERE YOU CAN FIND MORE INFORMATION					4
	DOCUMENTS INCORPORATED BY REFERENCE					4
	RISK FACTORS					6
	USE OF PROCEEDS					6
	CERTAIN INCOME TAX CONSIDERATIONS					6
	DESCRIPTION OF COMMON AND PREFERRED SHARES					6
	DESCRIPTION OF DEBT SECURITIES					14
	DESCRIPTION OF WARRANTS					26
	DESCRIPTION OF SUBSCRIPTION RECEIPTS					27
	DESCRIPTION OF UNITS					29
	SELLING SHAREHOLDERS					30
	PLAN OF DISTRIBUTION					30
	LEGAL MATTERS					32
	EXPERTS					33

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ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement that we have filed with the SEC, using a “shelf” registration process. Under this shelf registration process, we may offer and sell from time to time any combination of the securities described in this prospectus in one or more offerings. This prospectus provides you with a general description of the securities that are registered hereunder that may be offered by us. Each time we offer the securities, we will provide you with a prospectus supplement that will describe, among other things, the specific amounts and prices of the securities being offered and the terms of the offering.

Any prospectus supplement may add, update, or change information contained in this prospectus. Any statement that we make in this prospectus will be modified or superseded by any inconsistent statement made by us in any prospectus supplement. The information in this prospectus is accurate as of its date. Additional information, including our financial statements and the notes thereto, is incorporated in this prospectus by reference to our reports filed with the SEC. Therefore, before you invest in our securities, you should carefully read this prospectus and any prospectus supplement relating to the securities offered to you together with the additional information incorporated by reference in this prospectus and any prospectus supplement (including the documents described under the heading “Where You Can Find More Information” and “Documents Incorporated by Reference” in both this prospectus and any prospectus supplement).

You should rely only on the information contained in or incorporated by reference in this prospectus or any prospectus supplement. We have not authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. Neither we nor anyone acting on our behalf is making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should not assume that the information incorporated by reference or provided in this prospectus or any prospectus supplement is accurate as of any date other than the date on the front of those documents.

Unless the context otherwise requires, throughout this prospectus and any applicable prospectus supplement, the words “we,” “us,” the “registrant,” “the Company,” or “Perpetua” refer to Perpetua Resources Corp.; and the term “securities” refers to collectively to securities registered hereunder or any combination thereof. In this prospectus, unless otherwise specified, all dollar amounts are expressed in U.S. dollars. All references to “dollars” or “$” are to U.S. dollars and references to “C$” are to Canadian dollars.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus, any prospectus supplement, and the information incorporated by reference in this prospectus and each prospectus supplement may contain “forward-looking statements” within the meaning of “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995 and Section 21E of the Securities Exchange Act of 1934 (the “Exchange Act”) and “forward-looking information” within the meaning of applicable Canadian securities laws. We make such forward-looking statements pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and other federal securities laws. All statements, other than statements of historical or present facts, contained in this prospectus, any prospectus supplement, and the information incorporated by reference in this prospectus and each prospectus supplement, regarding our strategy, future operations, financial position, estimated revenues and losses, projected costs, prospects, plans and objectives of management are forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “anticipate,” “believe,” “expect,” “estimate,” “intend,” “plan,” “project,” “outlook,” “may,” “will,” “should,” “would,” “could,” “can,” the negatives thereof, variations thereon and other similar expressions, although not all forward-looking statements contain such identifying words. Forward-looking statements are based on certain estimates, beliefs, expectations and assumptions made in light of management’s experience and perception of historical trends, current conditions and expected future developments, as well as other factors that may be appropriate. Forward-looking statements necessarily involve unknown risks and uncertainties, which could cause actual results or outcomes to differ materially from those expressed or implied in such statements. Due to the risks, uncertainties and assumptions inherent in forward-looking information, you should not place undue reliance on forward-looking statements. These forward-looking statements include, but are not limited to, statements about:

•

analyses and other information based on expectations of future performance and planned work programs;

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•

possible events, conditions or financial performance that are based on assumptions about future economic conditions and courses of action;

•

assumptions and analysis underlying our mineral resource and mineral reserve estimates and plans for mineral resource exploration and development;

•

timing, costs and potential success of future activities on the Company’s properties, including but not limited to development and operating costs in the event that a production decision is made;

•

potential results of exploration, development and environmental protection and remediation activities;

•

future outlook and goals;

•

permitting timelines and requirements, regulatory and legal changes, requirements for additional capital, requirements for additional water rights and the potential effect of proposed notices of environmental conditions relating to mineral claims;

•

current or future litigation or environmental liability;

•

planned expenditures and budgets and the execution thereof, including the ability of the Company to discharge its liabilities as they become due;

•

access to capital for future exploration and development plans;

•

global economic, political and social conditions and financial markets;

•

changes in gold and antimony commodity prices;

•

our ability to implement our strategic plan and to maintain and manage growth effectively;

•

loss of our key executives;

•

labor shortages and disruptions;

•

cyber-attacks and other security breaches of our information and technology systems; and

•

other risks and uncertainties, including those described under the heading “Risk Factors” included in our most recent Annual Report on Form 10-K for the year ended December 31, 2021, as supplemented by our Quarterly Reports on Form 10-Q.

These risks are not exhaustive. Because of these risks and other uncertainties, our actual results, performance or achievement, or industry results, may be materially different from the anticipated or estimated results discussed in the forward-looking statements in this prospectus, any prospectus supplement, and the information incorporated by reference in this prospectus and each prospectus supplement. Factors that may cause actual results to differ materially from current expectations include, among other things, those described under the heading “Risk Factors” in our most recent Annual Report on Form 10-K filed with the SEC, as supplemented by our Quarterly Reports on Form 10-Q, and discussed elsewhere in this prospectus, each prospectus supplement, and the information incorporated by reference in this prospectus and each prospectus supplement. New risk factors emerge from time to time, and it is not possible for our management to predict all risk factors nor can we assess the effects of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in, or implied by, any forward-looking statements. Our past results of operations are not necessarily indicative of our future results. You should not rely on any forward-looking statements, which represent our beliefs, assumptions and estimates only as of the dates on which they were made, as predictions of future events. We undertake no obligation to update these forward-looking statements, even though circumstances may change in the future, except as required under applicable securities laws. We qualify all of our forward-looking statements by these cautionary statements.

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THE COMPANY

We are a development-stage company engaged in acquiring mining properties with the intention of exploring, evaluating and placing them into production, if warranted. Currently, our principal business is the exploration and, if warranted and subject to receipt of required permitting, redevelopment, restoration and operation of the Stibnite Gold Project in Idaho (the “Project” or “Stibnite Gold Project”). The Stibnite Gold Project is one of the highest-grade, open pit gold deposits in the United States and is designed to apply a modern, responsible mining approach to restore an abandoned mine site and produce both gold and the only mined source of antimony in the United States. We are currently undertaking an extensive permitting process for redevelopment and restoration of the Project.

We were incorporated under the Business Corporations Act (British Columbia) (the “BCBCA”) on February 22, 2011 under the name “Midas Gold Corp.” We changed our name to “Perpetua Resources Corp.” on February 15, 2021. Our headquarters are located at Suite 201 — 405 South 8th Street, Boise, Idaho 83702, and our telephone number is (208) 901-3060. Our website address is www.perpetuaresources.com. The information contained on, or that can be accessed through, our website is not part of, and is not incorporated into, this prospectus. We have included our website address in this prospectus solely as an inactive textual reference.

IMPLICATIONS OF BEING AN EMERGING GROWTH COMPANY

We are an “emerging growth company” as defined in the Jumpstart Our Business Startups Act (the “JOBS Act”) enacted in April 2012. Certain specified reduced reporting and other regulatory requirements are available to public companies that are emerging growth companies. These provisions include:

•

an exemption from the auditor attestation requirement in the assessment of the effectiveness of our internal controls over financial reporting required by Section 404 of the Sarbanes-Oxley Act of 2002;

•

an exemption from the adoption of new or revised financial accounting standards until they would apply to private companies;

•

an exemption from compliance with any new requirements adopted by the Public Company Accounting Oversight Board requiring mandatory audit firm rotation or a supplement to the auditor’s report in which the auditor would be required to provide additional information about our audit and our financial statements; and

•

reduced disclosure about our executive compensation arrangements.

We will continue to be an emerging growth company until the earliest of:

•

the last day of our fiscal year in which we have total annual gross revenues of $1.07 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 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;

•

the date on which we have, during the prior three-year period, issued more than $1 billion in non-convertible debt; or

•

the date on which we are deemed to be a “large accelerated filer” under the rules of the SEC, which means the market value of our common shares that is held by non-affiliates (or public float) exceeds $700 million as of the last day of our second fiscal quarter in our prior fiscal year.

We have elected to take advantage of certain of the reduced disclosure obligations in the registration statement of which this prospectus is a part and may elect to take advantage of other reduced reporting requirements in future filings. As a result, the information that we provide to our shareholders may be different than what you might receive from other public reporting companies in which you hold equity interests.

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WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports and other information with the SEC. Our filings with the SEC are available to the public through the Internet at the SEC’s website at http://www.sec.gov, which contains reports, proxy and information statements, and other information regarding issuers, including Perpetua, that file electronically with the SEC. We are also subject to requirements of the applicable securities laws of Canada, and documents that we file with the securities commissions or similar regulatory authorities in Canada may be found under our profile at www.sedar.com.

We make available free of charge through our website (www.perpetuaresources.com) all of the documents that we file with the SEC as soon as reasonably practicable after we electronically file those documents with the SEC or similar regulatory authorities in Canada. In addition to the reports filed or furnished with the SEC and the securities commissions or similar regulatory authorities in Canada, we publicly disclose information from time to time in our press releases, investor presentations posted on our website and at publicly accessible conferences. Such information, including information posted on or connected to our website or any other website, is not a part of, or incorporated by reference in, this prospectus unless specifically so designated and filed with the SEC or the securities commissions or similar regulatory authorities in Canada.

DOCUMENTS INCORPORATED BY REFERENCE

The SEC allows us to incorporate by reference into this prospectus the information we file with it, which means that we can disclose important information to you by referring you to the documents we file with the SEC. The information incorporated by reference is considered to be part of this prospectus, and later information that we file with the SEC will automatically update and supersede information in this prospectus and information previously filed with the SEC. Therefore, before you decide to invest in a particular offering under this shelf registration statement, you should always check for reports we may have filed with the SEC after the date of this prospectus.

We incorporate by reference the documents listed below and any future filings made by us with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 (the “Exchange Act”), after the date of the initial registration statement and prior to termination of the offering of the securities described in this prospectus (other than, in each case, documents or information deemed to have been furnished and not filed in accordance with the SEC rules):

•

our Annual Report on Form 10-K for the year ended December 31, 2021, including those portions of our definitive proxy statement on Schedule 14A, filed on April 11, 2022, incorporated by reference therein;

•

our Quarterly Report on Form 10-Q/A for the quarter ended March 31, 2022 and our Quarterly Report on Form 10-Q for the quarter ended June 30, 2022;

•

our Current Reports on Form 8-K filed on January 3, 2022 (as amended by our Current Report on Form 8-K/A filed on June 8, 2022), February 22, 2022, March 29, 2022, April 1, 2022, May 27, 2022, August 31, 2022 and September 6, 2022; and

•

the description of our Common Shares contained in our Registration Statement on Form 8-A filed with the SEC on January 20, 2021, Exhibit 4.1 to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2022 and any other amendments or reports filed with the SEC for purposes of updating such description.

You may obtain copies of any of the documents incorporated by reference in this prospectus from the SEC through the SEC’s website at the address provided above. We will also provide without charge to each person, including any beneficial owner, to whom a prospectus is delivered, upon written or oral request, a copy

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of any document incorporated by reference in this prospectus and any exhibit specifically incorporated by reference in those documents. Requests for such documents or exhibits should be directed to:

Perpetua Resources Corp.
Attn: Investor Relations Manager
405 S. 8th Street, Ste 201
Boise, Idaho 83702
Telephone number: (208) 901-3060

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RISK FACTORS

An investment in our securities involves risks. Before you invest in our securities, you should carefully consider those risk factors included in our most recent Annual Report on Form 10-K, as supplemented by our Quarterly Reports on Form 10-Q, each of which is incorporated herein by reference, and those risk factors that may be included in any applicable prospectus supplement together with all of the other information included in this prospectus, any prospectus supplement, and the documents we incorporate by reference in evaluating an investment in our securities. If any of these risks were actually to occur, our business, financial condition or results of operations could be materially adversely affected. Additional risks not presently known to us or that we currently believe are immaterial may also significantly impair our business operations and financial condition. Please read “Cautionary Note Regarding Forward-Looking Statements.” When we offer and sell any securities pursuant to a prospectus supplement, we may include additional risk factors relevant to such securities in the prospectus supplement.

USE OF PROCEEDS

Unless otherwise specified in a prospectus supplement, the net proceeds of any offering of securities under a prospectus supplement will be used for general corporate purposes, including expenses relating to the permitting process, feasibility and technical studies and funding potential future acquisitions and project capital expenditures. More detailed information regarding the use of proceeds from a sale of securities will be included in the applicable prospectus supplement.

Unless otherwise set forth in a prospectus supplement, we will not receive any proceeds from the sale of securities by any selling shareholder.

CERTAIN INCOME TAX CONSIDERATIONS

Information regarding material U.S. and Canadian federal income tax consequences to persons investing in the securities offered by this prospectus will be set forth in an applicable prospectus supplement. You are urged to consult your own tax advisors prior to any acquisition of our securities.

DESCRIPTION OF COMMON AND PREFERRED SHARES

The following summary describes our Common Shares and the material provisions of our Notice of Articles and Articles and of the BCBCA. Because the following is only a summary, it does not contain all of the information that may be important to you. For a complete description, you should refer to our Articles, a copy of which has been filed as an exhibit to the registration statement of which this prospectus is a part, and to the applicable provisions of the BCBCA.

General

There are no special rights or restrictions attached to any of the Common Shares, which all rank equally as to all benefits which might accrue to the holders of Common Shares.

Authorized Share Capital

We are authorized to issue an unlimited number of Common Shares without par value. As of August 5, 2022, we have 62,987,859 Common Shares outstanding.

Voting Rights

Holders of Common Shares are entitled to receive notice of and to attend any meetings of shareholders of the Company. At any general meeting, subject to the restrictions on joint registered owners of Common Shares, on a vote by show of hands every shareholder who is present in person or by proxy and entitled to vote has one vote and on a poll, every shareholder entitled to vote has one vote for each Common Share of which he, she or it is the registered owner and may exercise such vote either in person or by proxy. On a poll, a shareholder entitled to more than one vote need not cast all the votes in the same way. The majority of votes required for the Company to pass a special resolution at a general meeting of shareholders is two-thirds of the votes cast on the resolution.

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Economic Rights

Dividends and Distributions.

Subject to the BCBCA, holders of Common Shares are entitled to receive dividends if, as and when declared by the board of directors of the Company (the “Board”) at its discretion from funds legally available therefor, in each case subject to the rights, privileges, restrictions and conditions attached to any other series or class of shares ranking senior in priority to or on a pro-rata basis with the holders of Common Shares with respect to dividends.

Liquidation Rights.

Subject to the BCBCA, in the event of our liquidation, dissolution, or winding-up, holders of Common Shares are entitled to receive a pro rata share of our assets available for distribution to the shareholders after payment of debts and other liabilities, in each case subject to the rights, privileges, restrictions and conditions attached to any other series or class of shares ranking senior in priority to or on a pro-rata basis with the holders of Common Shares with respect to liquidation.

Conversion.

Holders of Common Shares have no conversion rights.

Pre-emptive Rights.

Paulson & Co. Inc. (“Paulson”) is entitled to the right of first opportunity to provide any equity financing required by us pursuant to the Amended and Restated Investor Rights Agreement between Midas Gold Corp., Idaho Gold Resources Company, LLC and Paulson & Co. Inc., dated March 17, 2020 (the “Paulson Investor Rights Agreement”) so long as Paulson owns in the aggregate 10% or more of the issued and outstanding Common Shares.

Participation Rights.

So long as Paulson owns at least 10% or more of the issued and outstanding Common Shares, Paulson has the right to participate in any future issuances of debt or equity securities of the Company to maintain its pro rata interest in the Company.

Subscription Rights.

Holders of Common Shares have no subscription rights.

Redemption Provisions.

There are no redemption provisions applicable to our Common Shares.

Sinking Fund Provisions.

There are no sinking fund provisions applicable to our Common Shares.

Preferred Shares

We currently have no outstanding preferred shares. We are authorized to issue an unlimited number of first preferred shares without par value, and an unlimited number of second preferred shares without par value. If we were to register and issue preferred shares, such preferred shares would rank senior to the Common Shares with respect to the payment of dividends and the distribution of assets on a liquidation, dissolution or winding up of the Company.

Shareholder Approval; Vote on Extraordinary Corporate Transactions

Under the BCBCA, certain extraordinary corporate actions, such as amalgamations (other than with certain affiliated companies), continuances to another jurisdiction and sales, leases or exchanges of all, or

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substantially all, of the property of a company (other than in the ordinary course of business), and other extraordinary corporate actions such as liquidations, dissolutions and arrangements (if ordered by a court), are required to be approved by a “special resolution” of shareholders.

A “special resolution” is a resolution (i) passed by a majority of not less than two-thirds of the votes cast by the shareholders who voted in respect of the resolution, or (ii) signed by all shareholders entitled to vote on the resolution. In specified cases, a special resolution to approve an extraordinary corporate action is required to be approved separately by the holders of a class or series of shares, including in certain cases a class or series of shares not otherwise carrying voting rights.

Approval Rights

Under the Paulson Investor Rights Agreement, so long as Paulson owns 20% or more of the outstanding Common Shares, without the prior written approval of Paulson and subject to certain exceptions, the Company shall not, and shall not permit any subsidiary to: (a) voluntarily delist from any stock exchange where its securities are listed; (b) incur any indebtedness or guarantee any indebtedness; or (c) incur any lien, claim or security interest on assets of the Company or any subsidiary including royalty agreements, streaming agreements or long-term offtake agreements.

Amendments to the Governing Documents

Under the BCBCA, the type of resolution required to be passed in order to authorize amendments to the notice of articles and/or articles of a company is determined as follows:

•

the type of resolution specified by the BCBCA; or

•

if not specified by the BCBCA, the type of resolution specified by the company’s articles; or

•

if neither (i) nor (ii) apply, a special resolution.

If the proposed amendment would affect a particular class of shares in certain specified ways, the holders of shares of that class are entitled to vote separately as a class on the proposed amendment, whether or not the shares otherwise carry the right to vote.

A company may alter its articles to specify or change the majority of votes that is required to pass a special resolution, which majority must be at least 2/3 and not more than 3/4 of the votes cast on the resolution, if the shareholders resolve, by a special resolution, to make the alteration. A company may also alter its articles to specify or change the majority of votes that is required for shareholders holding shares of a class or series of shares to pass a special separate resolution, which majority must be at least 2/3 and not more than 3/4 of the votes cast on the resolution, if (a) the shareholders resolve, by a special resolution, to make the alteration, and (b) shareholders holding shares of that class or series of shares consent by a special separate resolution of those shareholders.

There are no restrictions in the BCBCA on when the Company’s Articles can be altered. There is a general rule at common law that an alteration to the articles must be bona fide and in the best interests of the company as a whole. Where a shareholder alleges there has been, or is proposed to be, an alteration to the articles that is unfairly prejudicial to one or more of the shareholders, including the applicant, the applicant may be able to claim unfair prejudice. If the articles are being altered by the directors, the directors have similar duties to act honestly and in good faith with a view to the best interests of the company. Where the directors propose to alter or have altered the articles in a manner that a shareholder claims to be oppressive to one or more of the shareholders, the oppression/unfair prejudice remedies in the BCBCA may apply.

Quorum of Shareholders

The BCBCA provides that the quorum for the transaction of business at a meeting of shareholders of a company is the quorum established by the articles, or, if no quorum is established by the articles, two shareholders entitled to vote at the meeting whether present personally or by proxy.

Our Articles provide that the presence, in person or by proxy, of two or more shareholders representing at least 33 1∕3% of the outstanding Common Shares on the record date entitled to be voted will constitute a quorum for the transaction of business at any meeting of shareholders.

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Calling Meetings

The BCBCA requires that a company must hold its first annual general meeting not more than 18 months after the date on which it was recognized and subsequent annual general meetings must be held at least once in each calendar year and not more than 15 months after the annual reference date (which generally means that date of the last preceding annual general meeting).

General meetings of shareholders held between annual general meetings to consider matters other than those specifically required by the BCBCA or the Articles to be dealt with at an annual general meeting are commonly referred to as extraordinary general meetings. An extraordinary general meeting of shareholders may be called at any time for the transaction of any business the general nature of which is specified in the notice calling the meeting.

The shareholders (as defined in the BCBCA) of not less than 5% of the issued shares of a company that carry the right to vote at a meeting sought to be held may requisition the directors to call a general meeting of shareholders for the purposes stated in the requisition. In order to have standing to requisition a general meeting, a requisitionist must be entered on the securities register of the company as the registered owner of voting shares. If a general meeting is properly requisitioned, the directors must call a general meeting to transact the business specified in the requisition, to be held within four months after the date the requisition is received by the company.

General meetings must be held in British Columbia unless (a) a location outside British Columbia is provided for in the articles; (b) the articles do not restrict the company from approving a location outside British Columbia for holding a general meeting and a location outside British Columbia is (i) approved by the resolution required by the articles for that purpose; or (ii) if no resolution is required by the articles for that purpose, approved by an ordinary resolution; or (iii) the location for the meeting is approved in writing by the registrar before the meeting is held.

Our Articles provide that general meetings may be held outside British Columbia if that location is approved either by a resolution of the directors or in writing by the registrar before the meeting is held.

If the general meeting is a partially electronic meeting, as contemplated by the BCBCA, these requirements apply to the location where persons attend the meeting in person. If the general meeting is a fully electronic meeting, these requirements do not apply.

Shareholder Consent in Lieu of Meeting

Under the BCBCA, consent resolutions of shareholders are deemed to be proceedings at meetings of those shareholders and to be as valid and effective as if passed at a meeting that complies with all the requirements of the BCBCA and the articles relating to meetings of shareholders. A company must keep a copy of any shareholders’ consent resolutions, and minutes of shareholders’ meetings, at the records office of the company.

A “consent resolution” of shareholders in respect of the Company means:

•

in the case of a resolution of shareholders that may be passed as an ordinary resolution, a resolution consented to in writing by shareholders holding shares that carry the right to vote at general meetings who, in the aggregate, hold shares carrying at least 66 2/3% of the votes entitled to be cast on the resolution; and

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in the case of any other resolution of shareholders, a unanimous resolution.

Director Qualification, Election and Number

Only an individual who is properly qualified may become or act as a director of a company. Those who are not qualified to become or act as directors (or officers) include people under the age of 18 (not 19, the age of majority), people found to be incapable of managing their own affairs, undischarged bankrupts, and people who have been convicted of an offence concerning the promotion, formation, or management of a corporation or an unincorporated business or an offence involving fraud, subject to certain exceptions.

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Under the BCBCA, a company must have at least one director and a public company must have at least three directors. Our Articles provide that the number of directors is set at the most recently set of:

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the number of directors elected by ordinary resolution; and

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if at any meeting of shareholders at which there should be an election of directors, the places of any of the retiring directors are not filled by that election, those retiring directors who are not re-elected and who are asked by the newly elected directors to continue in office will, if willing to do so, continue in office until further new directors are elected. If any such election/continuance of directors does not result in the number of directors set for the time being, the number of directors of the Company is deemed to be set at the number of directors actually elected or continued in office.

The Board has adopted a majority voting policy (the “Majority Voting Policy”) which requires, in an election of directors, other than at a Contested Meeting (as defined below), any director who receives a greater number of shares withheld than shares voted in favor of his or her election must immediately tender his or her resignation (the “Resignation”) to the Board. The Corporate Governance and Nominating Committee of the Company will then review the matter and make a recommendation to the Board. In considering the Resignation, the Corporate Governance and Nominating Committee and the Board shall consider all factors they deem relevant. The Board shall determine whether or not to accept the Resignation within 90 days after the date of the relevant shareholders’ meeting. The Board shall accept the Resignation absent exceptional circumstances. The Resignation will be effective when accepted by the Board. The Director tendering the Resignation will not participate in any Board or Corporate Governance and Nominating Committee meeting at which the Resignation is considered. The Company shall promptly issue a news release with the Board’s decision and send a copy of the news release to the Toronto Stock Exchange (“TSX”). If the Resignation is not accepted, the news release shall fully state the reasons for that decision.

Under the Majority Voting Policy, a “Contested Meeting” is a meeting at which the number of directors nominated for election is greater than the number of seats available on the Board.

Under the Paulson Investor Rights Agreement, Paulson is entitled to designate nominees to the Board (each, a “Board Designee”) as follows: (a) so long as Paulson owns 10% or more of the outstanding Common Shares, Paulson shall be entitled to designate one Board Designee; and (b) so long as Paulson owns 20% or more of the outstanding Common Shares, Paulson shall be entitled to designate two Board Designees. Pursuant to the Paulson Investor Rights Agreement, the Company shall, in respect of every shareholders’ meeting at which the election of directors to the Board is considered, nominate for election to the Board the Board Designee(s), and shall use its commercially reasonable efforts to obtain shareholder approval for the election of the Board Designee(s). In the event that a Board Designee is not elected to the Board at such meeting or a Board Designee resigns or is unable to serve as a director for any reason, Paulson shall be entitled to designate a replacement director and the Company agrees to appoint, subject to applicable laws and TSX requirements, such person to the Board.

Vacancies on the Board of Directors

Under our Articles, any casual vacancy occurring in the Board may be filled by the directors.

Removal of Directors

Under our Articles, directors may be removed by shareholders or the Board as described below.

The shareholders may remove any director by special resolution, in which case the shareholders may elect, or appoint by ordinary resolution, a director to fill the resulting vacancy. If the shareholders do not elect or appoint a director to fill the vacancy contemporaneously with the removal, then the directors may appoint or the shareholders may elect, or appoint by ordinary resolution, a director to fill that vacancy.

The directors may remove any director before the expiration of their term of office if the director is convicted of an indictable offense, or if the director ceases to be qualified to act as a director of a company and does not promptly resign, and the directors may appoint a director to fill the resulting vacancy.

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Fiduciary Duty of Directors

Directors of a company existing under the BCBCA have fiduciary obligations to the company. The BCBCA requires directors and officers of a British Columbia company, in exercising their powers and performing the functions of a director or officer of the company must:

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act honestly and in good faith with a view to the best interests of the company;

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exercise the care, diligence and skill that a reasonably prudent person would exercise in comparable circumstances;

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act in accordance with the BCBCA and the regulations; and

•

subject to paragraphs i to iii above, act in accordance with the articles of the company.

Indemnification of Officers and Directors

See “Item 15. Indemnification of Directors and Officers” below.

Dissent Rights

The BCBCA provides that shareholders of a company are entitled to exercise dissent rights and be paid by the company the fair value of their shares in connection with specified matters, including, among others:

•

resolution altering any restrictions on the business the company is permitted to carry on or on its powers;

•

a continuance under the laws of another jurisdiction;

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the disposition (other than in the ordinary course of business) of all or substantially all of the undertaking of a company; and

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an amalgamation with another company (other than with certain affiliated companies).

Oppression Remedy

The BCBCA provides an oppression remedy that enables a court to make any interim or final order it considers appropriate with a view to remedying or bringing to an end to the matters complained of by a “complainant” (including a registered shareholder, beneficial owner of Common Shares and any other person whom the court considers appropriate), may apply for an order on the ground:

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that the affairs of the company are being or have been conducted, or that the powers of the directors are being or have been exercised, in a manner oppressive to one or more of the shareholders, including the applicant, or

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that some act of the company has been done or is threatened, or that some resolution of the shareholders or of the shareholders holding shares of a class or series of shares has been passed or is proposed, that is unfairly prejudicial to one or more of the shareholders, including the applicant.

The oppression remedy provides the court with very broad and flexible powers to intervene in corporate affairs to protect shareholders and other complainants. Common remedies include (a) orders that remedy the specific conduct complained of, for example by ordering repayment of management fees (where the conduct complained of was the discriminatory payment of those fees) or ordering the payment of dividends (where the conduct complained of was the failure to pay them); (b) orders requiring the company or other shareholders to purchase the wronged shareholder’s shares; (c) orders appointing a receiver or receiver-manager; and (d) orders for liquidation and dissolution.

Derivative Actions

Under the BCBCA, a shareholder or director of a company may apply to the court for leave to:

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prosecute a legal proceeding in the name and behalf of the company to:

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enforce a right, duty or obligation owed to the company that could be enforced by the company itself;

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or to obtain damages for any breach of a right, duty or obligation referred to in paragraph a above; or

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defend, in the name and on behalf of a company, a legal proceeding brought against the company.

Under the BCBCA, the court may grant leave on terms it considers appropriate, if:

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the complainant has made reasonable efforts to cause the directors of the company to prosecute or defend the legal proceeding;

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notice of application for leave has been given to the company and to any other person the court may order;

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the complainant is acting in good faith; and

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it appears to the court that it is in the best interests of the company for the legal proceeding to be prosecuted or defended.

Under the BCBCA, the court in a derivative action may (a) make an order that the complainant give security for costs; (b) authorize any person to control the conduct of the legal proceeding or give any other directions; (c) order interim costs to be paid to the person controlling the conduct of the legal proceed; and (d) on final disposition of a legal proceeding, make various other orders including orders for repayment of interim costs advanced and for indemnities as to costs and expenses.

Examination of Corporate Records

Under the BCBCA, upon payment of a prescribed fee, a person is entitled, during usual business hours, to examine certain corporate records and to make copies of or extracts from such documents.

Advance Notice for Shareholder Proposals and Director Nominations

The BCBCA permits certain eligible shareholders and beneficial owners of shares to submit shareholder proposals to a company, which proposals may be included in the company’s management information circular and proxy statement. To be considered for inclusion in the management information circular and proxy statement for an annual meeting of shareholders of the Company, any such shareholder proposal under the BCBCA must be:

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signed by the submitter and qualified shareholders who, together with the submitter, are, at the time of signing registered owners or beneficial owners of shares that, in the aggregate, constitute at least 1/100 of the issued Common Shares that carry the right of vote at general meetings or having a market value in excess of $2,000;

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received by the Company at least three months before the anniversary date of the last annual meeting of shareholders; and

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accompanied by declarations of those making the proposal and their supporters declaring the number of Common Shares carrying the right to vote at general meetings that are owned by the signatories and the names of the registered holders of the Common Shares, for inclusion in the management information circular and proxy statement distributed to shareholders prior to the annual meeting of shareholders of the Company.

On April 4, 2013, the Board adopted an advance notice policy (which was ratified by the Company’s shareholders at the annual general meeting held on May 14, 2013) (the “Advance Notice Policy”), which fixes the deadlines by which shareholders of the Company must submit director nominations to the Company prior to any annual or special meeting of shareholders and sets forth the information that a shareholder must include in a written notice to the Company for any director nominee to be eligible for election at such annual or special meeting of shareholders.

The following is a brief summary of certain provisions of the Advance Notice Policy and is qualified in its entirety by the full text of the Advance Notice Policy:

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Other than pursuant to (a) a proposal made in accordance with the BCBCA (as described above) or (b) a requisition of the shareholders made in accordance with the provisions of the BCBCA,

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shareholders of the Company must give advance written notice to the Company of any nominees for election to the Board.

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The Advance Notice Policy fixes a deadline by which shareholders of the Company must submit, in writing, nominations for directors to the Corporate Secretary of the Company prior to any annual or special meeting of shareholders, and sets forth the specific information that such shareholders must include with their nominations in order to be effective. Only persons who are nominated in accordance with the Advance Notice Policy are eligible for election as directors of the Company.

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For an annual meeting of shareholders, notice to the Company must be not less than 30 days and not more than 65 days prior to the date of the annual meeting; provided, however, that in the event that the annual meeting is to be held on a date less than 50 days after the date on which the first public announcement of the date of such annual meeting was made, notice may be given not later than the close of business on the 10th day following such public announcement.

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For a special meeting of shareholders (that is not also an annual meeting), notice to the Company must be given not later than the close of business on the 15th day following the day on which the first public announcement of the date of such special meeting was made.

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The time periods for giving notice set forth above shall in all cases be determined based on the original date of the applicable annual meeting and/or special meeting of shareholders, and in no event shall any adjournment or postponement of a meeting of shareholders, or the reconvening of any adjourned or postponed meeting of shareholders, or the announcement thereof, commence a new time period for the giving of notice as described above.

For the purposes of the Advance Notice Policy, “public announcement” means disclosure in a press release reported by a national news service in Canada, or in a document publicly filed by the Company under its profile on SEDAR at www.sedar.com or on the SEC’s Website at www.sec.gov.

Registration Rights

Paulson is entitled to certain registration rights with respect to Common Shares held by it pursuant to the Paulson Investor Rights Agreement. Pursuant to the terms of the Paulson Investor Rights Agreement, Paulson has the right to demand that we file a prospectus and take such other steps as may be necessary to facilitate a distribution in Canada of all or any portion of the registrable securities held by Paulson, subject to certain exceptions set forth in the Paulson Investor Rights Agreement. In addition, in the event that we effect a registered distribution of securities, either for our account or for the account of our other security holders, Paulson will be entitled to certain piggyback registration rights with respect to such distribution, subject to certain limitations set forth in the Paulson Investor Rights Agreement.

The Paulson Investor Rights Agreement provides that we must pay registration expenses in connection with effecting any demand registration or piggyback registration, with the exception of commissions payable to any underwriter attributable to the holders’ registrable securities, the holders’ pro rata share of the registration expenses attributable to a demand registration offering and any and all fees, disbursements and expenses of legal counsel or other advisors retained by the holders in connection with a piggyback registration. We must pay all registration expenses in connection with an abandoned offering in respect of which piggyback registration rights have been exercised.

Such registration rights are subject to the exceptions and conditions set forth in the Paulson Investor Rights Agreement, which is filed as an exhibit to our Annual Report on Form 10-K. The registration rights will expire upon the terms set forth in the Paulson Investor Rights Agreement.

Listing

Our Common Shares are listed on the TSX under the symbol “PPTA” and on the Nasdaq under the symbol “PPTA”.

Transfer Agent and Registrar

The transfer agent and registrar for our Common Shares is Computershare Investor Services. The transfer agent’s address is Proxy Department, 3rd Floor, 510 Burrard Street, Vancouver, BC V6C 3B9.

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DESCRIPTION OF DEBT SECURITIES

General

We may issue debt securities in one or more series. When used in this “Description of Debt Securities” section, unless we state otherwise or the context clearly indicates otherwise, references to the “Company,” “we,” “us,” and “our” refer to Perpetua Resources Corp. and not any of its subsidiaries. We may issue senior or subordinated debt securities. None of the debt securities will be secured by any of our property or assets. Thus, holders of our debt securities will be unsecured creditors.

The debt indenture and its associated documents, including the debt security, will contain the full legal text of the matters described in this section and the applicable prospectus supplement. We have filed a form of the indenture with the SEC as an exhibit to our registration statement, of which this prospectus is a part. See “Where You Can Find More Information” in this prospectus for information on how to obtain copies of them.

This section and the applicable prospectus supplement summarize material terms of the indenture and the related debt security. They do not, however, describe every aspect of the indenture and the related debt security. For example, in this section and the applicable prospectus supplement, we use terms that have been given special meaning in the indenture, but we do not describe the meaning of all the terms that may be important to holders. The applicable prospectus supplement will have a more detailed description of the specific terms of the applicable debt security.

Indenture

The debt securities will be governed by a document called an indenture. The indenture is a contract between us and the trustee named in the indenture.

The trustee has two main roles:

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First, the trustee can enforce the holders’ rights against us if we default. There are some limitations on the extent to which the trustee acts on the holders’ behalf, which we describe later under “— Default, Remedies and Waiver of Default.”

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Second, the trustee performs administrative duties for us, such as sending interest payments and notices to holders.

Series of Debt Securities

We may issue as many distinct debt securities or series of debt securities under the indenture as we wish. This section summarizes terms of the securities that apply generally to all debt securities and series of debt securities. The provisions of the indenture allow us not only to issue debt securities with terms different from those of debt securities previously issued under the indenture, but also to “reopen” a previously issued series of debt securities and issue additional debt securities of that series. We will describe most of the financial and other specific terms of any debt security we issue in the applicable prospectus supplement. Those terms may vary from the terms described here.

The specific terms of any debt security we issue as described in the applicable prospectus supplement will supplement and, if applicable, modify or replace the general terms described in this section. If there are any differences between the applicable prospectus supplement and this prospectus with respect to a debt security, the applicable prospectus supplement will control.

When we refer to a “series of debt securities,” we mean a series of debt securities issued under the indenture. When we refer to “the applicable prospectus supplement,” we mean the prospectus supplement describing the specific terms of a particular debt security. The terms used in the applicable prospectus supplement will have the meanings described in this prospectus, unless otherwise specified.

Amounts of Issuances

The indenture will not limit the aggregate amount of debt securities that we may issue or the number of series or the aggregate amount of any particular series. We may issue debt securities and other securities at any

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time without the holders’ consent and without notifying holders. The indenture and the debt securities will not limit our ability to incur other indebtedness or to issue other securities other than as specified in a particular debt security, as applicable. Also, unless otherwise specified below or in the applicable prospectus supplement, we are not subject to financial or similar restrictions by the terms of the debt securities.

Principal Amount, Stated Maturity and Maturity

Unless otherwise stated, the principal amount of a debt security means the principal amount payable at its stated maturity, unless that amount is not determinable, in which case the principal amount of a debt security is its face amount. The term “stated maturity” with respect to any debt security means the day on which the principal amount of the debt security is scheduled to become due. The principal may become due sooner, by reason of redemption, acceleration after a default or otherwise in accordance with the terms of the debt security. The day on which the principal actually becomes due, whether at the stated maturity or earlier, is called the “maturity” of the principal. We also use the terms “stated maturity” and “maturity” to refer to the days when other payments become due. For example, we may refer to a regular interest payment date when an installment of interest is scheduled to become due as the “stated maturity” of that installment. When we refer to the “stated maturity” or the “maturity” of a debt security without specifying a particular payment, we mean the stated maturity or maturity, as the case may be, of the principal.

Specific Terms of Debt Securities

The applicable prospectus supplement will describe the specific terms of the debt security, which will include some or all of the following:

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the title of the series of the debt security and whether it is a senior debt security or a subordinated debt security;

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any limit on the total principal amount of the debt securities of the same series;

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the stated maturity;

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the currency or currencies for payment of principal and interest, if not U.S. dollars;

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the price at which we originally issue the debt security, expressed as a percentage of the principal amount, and the original issue date;

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whether the debt security is a fixed-rate debt security, a floating rate debt security or an indexed debt security;

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if the debt security is a fixed-rate debt security, the yearly rate at which the holder’s debt security will bear interest, if any, and the interest payment dates;

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if the debt security is a floating-rate debt security, the interest rate basis; any applicable index currency or index maturity, spread or spread multiplier or initial base rate, maximum rate or minimum rate; the interest reset, determination, calculation and payment dates; the day count convention used to calculate interest payments for any period; the business day convention; and the calculation agent;

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if the debt security is an indexed debt security, the principal amount, if any, we will pay at maturity, interest payment dates, the amount of interest, if any, we will pay on an interest payment date or the formula we will use to calculate these amounts, if any, and the terms on which the debt security will be exchangeable for or payable in cash, securities or other property;

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if the debt security may be converted into or exercised or exchanged for common or preferred shares or other securities of the Company or debt or equity securities of one or more third parties, the terms on which conversion, exercise or exchange may occur, including whether conversion, exercise or exchange is mandatory, at the option of the holder or at our option, the period during which conversion, exercise or exchange may occur, the initial conversion, exercise or exchange price or rate and the circumstances or manner in which the amount of common or preferred shares or other securities issuable upon conversion, exercise or exchange may be adjusted;

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if the debt security is also an original issue discount debt security, the yield to maturity;

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if applicable, the circumstances under which the debt security may be redeemed at our option or repaid at the holder’s option before the stated maturity, including any redemption commencement date, repayment date(s), redemption price(s) and redemption period(s);

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the authorized denominations, if other than $2,000 and multiples of $1,000;

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the depositary for the debt security, if other than The Depository Trust Company (“DTC”), and any circumstances under which the holder may request securities in non-global form, if we choose not to issue the debt security in book-entry form only;

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if applicable, the circumstances under which we will pay additional amounts on any debt securities held by a person who is not a United States person for tax purposes and under which we can redeem the debt securities if we have to pay additional amounts;

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any guarantors of the debt security;

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the names and duties of any co-trustees, depositaries, authenticating agents, paying agents, transfer agents or registrars for the debt security, as applicable; and

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any other terms of the debt security, which could be different from those described in this prospectus.

Governing Law

The indenture and the debt securities will be governed by New York law.

Form of Debt Securities

We will issue each debt security only in registered form, without coupons, unless we specify otherwise in the applicable prospectus supplement. In addition, we will issue each debt security in global — i.e., book-entry — form only, unless we specify otherwise in the applicable prospectus supplement. Debt securities in book-entry form will be represented by a global security registered in the name of a depositary, which will be the holder of all the debt securities represented by the global security. Those who own beneficial interests in a global debt security will do so through participants in the depositary’s securities clearance system, and the rights of these indirect owners will be governed solely by the applicable procedures of the depositary and its participants. References to “holders” in this section mean those who own debt securities registered in their own names, on the books that we or the trustee maintain for this purpose, and not those who own beneficial interests in debt securities registered in street name or in debt securities issued in book-entry form through one or more depositaries.

Unless otherwise indicated in the prospectus supplement, the following is a summary of the depositary arrangements applicable to debt securities issued in global form and for which DTC acts as depositary.

Each global debt security will be deposited with, or on behalf of, DTC, as depositary, or its nominee, and registered in the name of a nominee of DTC. Except under the limited circumstances described below, global debt securities are not exchangeable for definitive certificated debt securities.

Ownership of beneficial interests in a global debt security is limited to institutions that have accounts with DTC or its nominee, or persons that may hold interests through those participants. In addition, ownership of beneficial interests by participants in a global debt security will be evidenced only by, and the transfer of that ownership interest will be effected only through, records maintained by DTC or its nominee for a global debt security. Ownership of beneficial interests in a global debt security by persons that hold those interests through participants will be evidenced only by, and the transfer of that ownership interest within that participant will be effected only through, records maintained by that participant. DTC has no knowledge of the actual beneficial owners of the debt securities. Beneficial owners will not receive written confirmation from DTC of their purchase, but beneficial owners are expected to receive written confirmations providing details of the transaction, as well as periodic statements of their holdings, from the participants through which the beneficial owners entered the transaction. The laws of some jurisdictions require that certain purchasers of securities take physical delivery of securities they purchase in definitive form. These laws may impair the holders’ ability to transfer beneficial interests in a global debt security.

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We will make payment of principal of, and interest on, debt securities represented by a global debt security registered in the name of or held by DTC or its nominee to DTC or its nominee, as the case may be, as the registered owner and holder of the global debt security representing those debt securities. DTC has advised us that upon receipt of any payment of principal of, or interest on, a global debt security, DTC immediately will credit accounts of participants on its book-entry registration and transfer system with payments in amounts proportionate to their respective interests in the principal amount of that global debt security, as shown in the records of DTC. Payments by participants to owners of beneficial interests in a global debt security held through those participants will be governed by standing instructions and customary practices, as is now the case with securities held for the accounts of customers in bearer form or registered in “street name,” and will be the sole responsibility of those participants, subject to any statutory or regulatory requirements that may be in effect from time to time.

Neither we, any trustee nor any of our respective agents will be responsible for any aspect of the records of DTC, any nominee or any participant relating to, or payments made on account of, beneficial interests in a permanent global debt security or for maintaining, supervising or reviewing any of the records of DTC, any nominee or any participant relating to such beneficial interests.

A global debt security is exchangeable for definitive certificated debt securities registered in the name of, and a transfer of a global debt security may be registered to, any person other than DTC or its nominee, only if:

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DTC notifies us that it is unwilling, unable or no longer qualified to continue as depositary for that global security or has ceased to be a registered clearing agency and we do not appoint another institution to act as depositary within 60 days; or

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we notify the trustee that we wish to terminate that global security.

Any global debt security that is exchangeable pursuant to the preceding paragraph will be exchangeable in whole for definitive certificated debt securities in registered form, of like tenor and of an equal aggregate principal amount as the global debt security, in denominations specified in the applicable prospectus supplement, if other than $2,000 and multiples of $1,000. The definitive debt securities will be registered by the registrar in the name or names instructed by DTC. We expect that these instructions may be based upon directions received by DTC from its participants with respect to ownership of beneficial interests in the global debt security.

Except as provided above or in the applicable prospectus supplement, owners of the beneficial interests in a global debt security will not be entitled to receive physical delivery of debt securities in definitive certificated form and will not be considered the holders of debt securities for any purpose under the indenture. Except as provided above, no global debt security shall be exchangeable except for another global debt security of like denomination and tenor to be registered in the name of DTC or its nominee. Accordingly, each person owning a beneficial interest in a global debt security must rely on the procedures of DTC and, if that person is not a participant, on the procedures of the participant through which that person owns its interest, to exercise any rights of a holder under the global debt security or the indenture.

We understand that, under existing industry practices, in the event that we request any action of holders, or an owner of a beneficial interest in a global debt security desires to give or take any action that a holder is entitled to give or take under the debt securities or the indenture, DTC would authorize the participants holding the relevant beneficial interests to give or take that action. Additionally, those participants would authorize beneficial owners owning through those participants to give or take that action or would otherwise act upon the instructions of beneficial owners owning through them.

DTC has advised us that it is a limited-purpose trust company organized under the laws of the State of New York, a “banking organization” within the meaning of the New York Banking Law, a member of the Federal Reserve System, a “clearing corporation” within the meaning of the New York Uniform Commercial Code, and a “clearing agency” registered under the Exchange Act. DTC was created to hold securities of its participants and to facilitate the clearance and settlement of transactions among its participants in securities through electronic book-entry changes in accounts of the participants. By doing so, DTC eliminates the need for physical movement of securities certificates.

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DTC’s participants include securities brokers and dealers, banks, trust companies, clearing corporations, and certain other organizations. DTC is a wholly owned subsidiary of The Depository Trust & Clearing Corporation (DTCC); DTCC is the holding company for DTC, National Securities Clearing Corporation and Fixed Income Clearing Corporation, all of which are registered clearing agencies; and DTCC is owned by the users of its regulated subsidiaries. Access to DTC’s book-entry system is also available to others, such as banks, brokers, dealers, and trust companies that clear through or maintain a custodial relationship with a participant, either directly or indirectly. The rules applicable to DTC and its participants are on file with the SEC.

Investors may hold interests in the debt securities outside the U.S. through the Euroclear System (“Euroclear”) or Clearstream Banking (“Clearstream”) if they are participants in those systems, or indirectly through organizations which are participants in those systems. Euroclear and Clearstream will hold interests on behalf of their participants through customers’ securities accounts in Euroclear’s and Clearstream’s names on the books of their respective depositaries, which in turn will hold such interests in customers’ securities accounts in the depositaries’ names on the books of DTC. All securities in Euroclear or Clearstream are held on a fungible basis without attribution of specific certificates to specific securities clearance accounts.

The following is based on information furnished by Euroclear or Clearstream, as the case may be. Euroclear has advised us that:

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It was created in 1968 to hold securities for participants of Euroclear and to clear and settle transactions between Euroclear participants through simultaneous electronic book-entry delivery against payment, thereby eliminating the need for physical movement of certificates and any risk from lack of simultaneous transfers of securities and cash;

•

Euroclear includes various other services, including securities lending and borrowing and interfaces with domestic markets in several countries;

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Euroclear is operated by Euroclear Bank SA/NV, as operator of the Euroclear System (the “Euroclear Operator”), under contract with Euroclear Clearance Systems S.C., a Belgian cooperative corporation (the “Cooperative”);

•

The Euroclear Operator conducts all operations, and all Euroclear securities clearance accounts and Euroclear cash accounts are accounts with the Euroclear Operator, not the Cooperative. The Cooperative establishes policy for Euroclear on behalf of Euroclear participants. Euroclear participants include banks (including central banks), securities brokers and dealers and other professional financial intermediaries and may include underwriters of debt securities offered by this prospectus;

•

Indirect access to Euroclear is also available to other firms that clear through or maintain a custodial relationship with a Euroclear participant, either directly or indirectly;

•

Securities clearance accounts and cash accounts with Euroclear SA/NV are governed by the Terms and Conditions Governing Use of Euroclear, the related Operating Procedures of Euroclear, and applicable Belgian law (collectively, the “Terms and Conditions”);

•

The Terms and Conditions govern transfers of securities and cash within Euroclear, withdrawals of securities and cash within Euroclear, withdrawals of securities and cash from Euroclear, and receipts of payments with respect to securities in Euroclear. All securities in Euroclear are held on a fungible basis without attribution of specific certificates to specific securities clearance accounts. Euroclear SA/NV acts under the Terms and Conditions only on behalf of Euroclear participants and has no record of or relationship with persons holding through Euroclear participants; and

•

Distributions with respect to debt securities held beneficially through Euroclear will be credited to the cash accounts of Euroclear participants in accordance with the Terms and Conditions, to the extent received by the U.S. depositary for Euroclear.

Clearstream has advised us that:

•

It is incorporated under the laws of Luxembourg as a professional depositary and holds securities for its participating organizations and facilitates the clearance and settlement of securities transactions

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between Clearstream participants through electronic book-entry changes in accounts of Clearstream participants, thereby eliminating the need for physical movement of certificates;

•

Clearstream provides to Clearstream participants, among other things, services for safekeeping, administration, clearance and settlement of internationally traded securities and securities lending and borrowing. Clearstream interfaces with domestic markets in several countries;

•

As a professional depositary, Clearstream is subject to regulation by the Luxembourg Monetary Institute;

•

Clearstream participants are recognized financial institutions around the world, including underwriters, securities brokers and dealers, banks, trust companies, clearing corporations and certain other organizations and may include underwriters of debt securities offered by this prospectus;

•

Indirect access to Clearstream is also available to others, such as banks, brokers, dealers and trust companies, that clear through or maintain a custodial relationship with a Clearstream participant either directly or indirectly; and

•

Distributions with respect to the debt securities held beneficially through Clearstream will be credited to cash accounts of Clearstream participants in accordance with its rules and procedures, to the extent received by the U.S. depositary for Clearstream.

We have provided the descriptions herein of the operations and procedures of DTC, Euroclear and Clearstream solely as a matter of convenience. These operations and procedures are solely within the control of DTC, Euroclear and Clearstream and are subject to change by them from time to time. We believe that the sources from which the information in this section and elsewhere in this prospectus concerning DTC, Euroclear, Euroclear SA/NV, Euroclear Clearance Systems S.C., Euroclear’s system, Clearstream and Clearstream’s system has been obtained are reliable, but neither we, any underwriters nor the trustee takes any responsibility for the accuracy of the information.

Initial settlement for the securities will be made in immediately available funds. Secondary market trading between DTC participants will occur in the ordinary way in accordance with DTC’s rules and will be settled in immediately available funds. Secondary market trading between Euroclear participants and/or Clearstream participants will occur in the ordinary way in accordance with the applicable rules and operating procedures of Euroclear and Clearstream, as applicable, and will be settled using the procedures applicable to conventional eurobonds in immediately available funds.

Cross-market transfers between persons holding directly or indirectly through DTC, on the one hand, and directly or indirectly through Euroclear participants or Clearstream participants, on the other, will be effected in DTC in accordance with DTC rules on behalf of the relevant European international clearing system by its U.S. depositary; however, such cross-market transactions will require delivery of instructions to the relevant European international clearing system by the counterparty in such system in accordance with its rules and procedures and within its established deadlines (European time). The relevant European international clearing system will, if the transaction meets its settlement requirements, deliver instructions to its U.S. depositary to take action to effect final settlement on its behalf by delivering or receiving securities in DTC, and making or receiving payment in accordance with normal procedures for same-day funds settlement applicable to DTC. Euroclear participants and Clearstream participants may not deliver instructions directly to their respective U.S. depositaries.

Because of time-zone differences, credits of securities received in Euroclear or Clearstream as a result of a transaction with a DTC participant will be made during subsequent securities settlement processing and dated the business day following the DTC settlement date. Credits or any transactions in securities settled during this processing will be reported to the relevant Euroclear or Clearstream participants on that following business day. Cash received in Euroclear or Clearstream as a result of sales of debt securities by or through a Euroclear participant or a Clearstream participant to a DTC participant will be received with value on the DTC settlement date but will be available in the relevant Euroclear or Clearstream cash account only as of the business day following settlement in DTC.

Although DTC, Euroclear and Clearstream have agreed to the foregoing procedures to facilitate transfers of securities among participants of DTC, Euroclear and Clearstream, they are under no obligation to perform or continue to perform these procedures and these procedures may be discontinued at any time.

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Redemption or Repayment

If there are any provisions regarding redemption or repayment applicable to a debt security, we will describe them in the applicable prospectus supplement. We or our affiliates may purchase debt securities from investors who are willing to sell from time to time, either in the open market at prevailing prices or in private transactions at negotiated prices. Debt securities that we or they purchase may, at our discretion, be held, resold or canceled.

Mergers and Similar Transactions

We are generally permitted under the indenture to merge, consolidate or amalgamate with another corporation or other entity. We are also permitted under the indenture to sell all or substantially all of our assets to another corporation or other entity. With regard to any series of debt securities and other than as set forth in the applicable prospectus supplement, however, we may not take any of these actions unless all the following conditions, among other things, are met:

•

If the successor entity in the transaction is not the Company, the successor entity must be organized as a corporation, limited liability company, partnership or trust, shall be organized and validly existing under the laws of the United States, any state thereof or the District of Columbia or the laws of Canada or any province or territory thereof, and must expressly assume our obligations under the debt securities of that series and the indenture with respect to that series.

•

Immediately after the transaction, no default under the debt securities of that series has occurred and is continuing. For this purpose, “default under the debt securities of that series” means an event of default with respect to that series or any event that would be an event of default with respect to that series if the requirements for giving us default notice and for our default having to continue for a specific period of time were disregarded. We describe these matters below under “— Default, Remedies and Waiver of Default.”

If the conditions described above are satisfied with respect to the debt securities of any series, we will not need to obtain the approval of the holders of those debt securities in order to merge, consolidate or amalgamate or to sell all or substantially all our assets. Also, these conditions will apply only if we wish to merge, consolidate or amalgamate with another entity or sell all or substantially all of our assets to another entity. We will not need to satisfy these conditions if we enter into other types of transactions, including any transaction in which we acquire the stock or assets of another entity, any transaction that involves a change of control of the Company but in which we do not merge, consolidate or amalgamate and any transaction in which we sell less than substantially all our assets.

The successor entity will be substituted for the Company with respect to the debt securities of any series and under the indenture with the same effect as if it had been an original party to the indenture, and, except in the case of a lease, the Company will be relieved from any further obligations and covenants under the indenture.

Defeasance, Covenant Defeasance and Satisfaction and Discharge

When we use the term defeasance, we mean discharge from some or all of our obligations under the indenture. If we deposit with the trustee funds or government securities, or if so provided in the applicable prospectus supplement, obligations other than government securities, sufficient to make payments on any series of debt securities on the dates those payments are due and payable and other specified conditions are satisfied, then, at our option, either of the following will occur:

•

we will be discharged from our obligations with respect to the debt securities of such series (“legal defeasance”); or

•

we will be discharged from any covenants we make in the indenture for the benefit of such series and the related events of default will no longer apply to us (“covenant defeasance”).

If we defease any series of debt securities, the holders of such securities will not be entitled to the benefits of the indenture, except for our obligations to register the transfer or exchange of such securities, replace stolen, lost or mutilated securities or maintain paying agencies and hold moneys for payment in trust. In case

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of covenant defeasance, our obligation to pay principal of, and any premium and interest on, the applicable series of debt securities will also survive.

We will be required to deliver to the trustee an opinion of counsel that the deposit and related defeasance would not cause the holders of the applicable series of debt securities to recognize gain or loss for U.S. federal or Canadian federal, provincial or territorial income tax purposes. If we elect legal defeasance, those opinions of counsel must be based upon a ruling from the United States Internal Revenue Service or a change in law to that effect or a ruling from the Canada Revenue Agency, as applicable.

In addition, we may satisfy and discharge all our obligations under the indenture with respect to debt securities of any series, other than our obligation to register the transfer of and exchange debt securities of that series, provided that we either:

•

deliver all outstanding debt securities of that series to the trustee for cancellation; or

•

all such debt securities not so delivered for cancellation have either become due and payable or will become due and payable at their stated maturity within one year or are to be called for redemption within one year, and in the case of this bullet point, we have deposited with the trustee in trust an amount of cash sufficient to pay the entire indebtedness of such debt securities, including interest to the stated maturity or applicable redemption date.

No Personal Liability

No past, present or future director, officer, employee, incorporator, member, manager, partner (whether general or limited), or shareholder of the Company, as such, will have any liability for any obligations of us under the debt securities or the indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each holder of debt securities by accepting a debt security waives and releases all such liability and claims. The waiver and release are part of the consideration for issuance of the debt securities. This provision does not apply to any claims under the U.S. federal securities laws.

Default, Remedies and Waiver of Default

Holders of our debt securities will have special rights if an event of default with respect to the holder’s debt security occurs and is continuing, as described in this subsection.

Events of Default

Unless the applicable prospectus supplement says otherwise, when we refer to an event of default with respect to any series of debt securities, we mean any of the following:

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we do not pay the principal of and any premium on any debt security of that series on the due date;

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we do not pay interest on any debt security of that series within 30 days after the due date;

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we do not deposit a sinking fund payment with regard to any debt security of that series within 60 days after the due date, but only if the payment is required under provisions described in the applicable prospectus supplement;

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we remain in breach of our covenants regarding mergers or sales of substantially all of our assets or any other covenant we make in the indenture for the benefit of the relevant series, for 90 days after we receive a notice of default stating that we are in breach and requiring us to remedy the breach, which notice must be sent by the trustee or the holders of at least 25% in principal amount of the relevant series of debt securities;

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we file for bankruptcy or other events of bankruptcy, insolvency or reorganization relating to the Company occur; or

•

if the applicable prospectus supplement states that any additional event of default applies to the series, that event of default occurs.

We may change, eliminate, or add to the events of default with respect to any particular series or any particular debt security or debt securities within a series, as indicated in the applicable prospectus supplement.

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Remedies if an Event of Default Occurs

Except as otherwise specified in the applicable prospectus supplement, if an event of default has occurred with respect to any series of debt securities and has not been cured or waived, the trustee or the holders of not less than 25% in principal amount of all debt securities of that series then outstanding may declare the entire principal amount of the debt securities of that series to be due immediately. Except as otherwise specified in the applicable prospectus supplement, if the event of default occurs because of events in bankruptcy, insolvency or reorganization relating to the Company, the entire principal amount of the debt securities of that series will be automatically accelerated, without any action by the trustee or any holder.

Each of the situations described above is called an acceleration of the stated maturity of the affected series of debt securities. Except as otherwise specified in the applicable prospectus supplement, if the stated maturity of any series is accelerated and a judgment for payment has not yet been obtained, the holders of a majority in principal amount of the debt securities of that series may cancel the acceleration for the entire series.

If an event of default occurs, the trustee will have special duties. In that situation, the trustee will be obligated to use those of its rights and powers under the indenture, and to use the same degree of care and skill in doing so, that a prudent person would use in that situation in conducting his or her own affairs.

Except as described in the prior paragraph, the trustee is not required to take any action under the indenture at the request of any holders unless the holders offer the trustee protection satisfactory to the Trustee from expenses and liability. This is called an indemnity. If the trustee is provided with an indemnity satisfactory to it, the holders of a majority in principal amount of all debt securities of the relevant series may direct the time, method and place of conducting any lawsuit or other formal legal action seeking any remedy available to the trustee with respect to that series. These majority holders may also direct the trustee in performing any other action under the indenture with respect to the debt securities of that series. However, the trustee may refuse to follow any direction that conflicts with law or the indenture or that the trustee determines is unduly prejudicial to the rights of other holders (it being understood that the trustee does not have an affirmative duty to ascertain whether or not any such direction unduly prejudices the rights of such holders) or would involve the trustee in personal liability; provided, however, that the trustee may take any other action deemed proper by the trustee that is not inconsistent with such direction.

Before a holder may bypass the trustee and bring its own lawsuit or other formal legal action or take other steps to enforce its rights or protect its interests relating to any debt security, all of the following must occur:

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the holder of the debt security must give the trustee written notice that an event of default has occurred with respect to the debt securities of such series, and the event of default must not have been cured or waived;

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the holders of not less than 25% in principal amount of all debt securities of such series must make a written request that the trustee take action because of the default, and they or other holders must offer to the trustee indemnity satisfactory to the trustee against the cost and other liabilities of taking that action;

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the trustee must not have taken action for 60 days after the above steps have been taken; and

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during those 60 days, the holders of a majority in principal amount of the debt securities of such series must not have given the trustee directions that are inconsistent with the written request of the holders of not less than 25% in principal amount of the debt securities of such series.

Each holder is entitled at any time, however, to bring a lawsuit for the payment of money due on its debt security on or after its stated maturity (or, if the debt security is redeemable, on or after its redemption date).

Book-entry and other indirect owners should consult their banks or brokers for information on how to give notice or direction to or make a request of the trustee and how to declare or cancel an acceleration of the maturity.

Waiver of Default

The holders of not less than a majority in principal amount of the debt securities of any series may waive a default for all debt securities of that series. If this happens, the default will be treated as if it has not occurred.

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No one can waive a payment default on any debt security, however, without the approval of the particular holder of that debt security.

Annual Information about Defaults to the Trustee

We will furnish each trustee every year a written statement of two of our officers certifying that to their knowledge we are in compliance with the indenture and the debt securities issued under it, or else specifying any default under the indenture.

Modifications and Waivers

There are three types of changes we can make to the indenture and the debt securities or series of debt securities issued under the indenture.

Changes Requiring Each Holder’s Approval

First, there are changes that cannot be made without the approval of each holder of a debt security affected by the change under the indenture, including, among others:

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changing the stated maturity for any principal or interest payment on such debt security;

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reducing the principal amount, the amount payable on acceleration of the maturity after a default, the interest rate or the redemption price for such debt security;

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permitting redemption of such debt security if not previously permitted;

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impairing any right such holder may have to require purchase of its debt security;

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if such debt security constitutes a convertible debt security, impairing any right that a holder may have to convert such debt security;

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changing the currency of any payment on such debt security;

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changing the place of payment on such debt security;

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impairing such holder’s right to sue for payment of any amount due on its debt security;

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reducing the percentage in principal amount of the debt securities of any one or more affected series, taken separately or together, as applicable, and whether comprising the same or different series or less than all of the debt securities of a series, the approval of whose holders is needed to change the indenture or those debt securities or waive our compliance with the indenture or to waive defaults; and

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changing the provisions of the indenture dealing with modification and waiver in any other respect, except to increase any required percentage referred to above or to add to the provisions that cannot be changed or waived without approval of the holder of each affected debt security.

Changes Not Requiring Approval

The second type of change does not require any approval by holders of the debt securities affected. These changes are limited to clarifications and changes that would not adversely affect any debt securities of any series in any material respect. Nor do we need any approval to make changes that affect only debt securities to be issued under the indenture after the changes take effect. We may also make changes or obtain waivers that do not adversely affect a particular debt security, even if they affect other debt securities. In those cases, we do not need to obtain the approval of the holder of the unaffected debt security; we need only obtain any required approvals from the holders of the affected debt securities. We may also make changes to conform the text of the indenture or any debt securities to any provision of the “Description of Debt Securities” in this prospectus or the comparable section in the applicable prospectus supplement, to the extent such provision was intended to be a verbatim recitation of a provision of such indenture or debt securities.

Changes Requiring Majority Approval

Any other change to the indenture and the debt securities issued under the indenture would require the following approval:

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If the change affects only particular debt securities within a series issued under the indenture, it must be approved by the holders of a majority in principal amount of such particular debt securities; or

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If the change affects debt securities of more than one series issued under the indenture, it must be approved by the holders of a majority in principal amount of all debt securities of all such series affected by the change, with all such affected debt securities voting together as one class for this purpose and such affected debt securities of any series potentially comprising fewer than all debt securities of such series, in each case, except as may otherwise be provided pursuant to the indenture for all or any particular debt securities of any series. This means that modification of terms with respect to certain securities of a series could be effectuated without obtaining the consent of the holders of a majority in principal amount of other securities of such series that are not affected by such modification.

The same majority approval would be required for us to obtain a waiver of any of our covenants in the indenture. Our covenants include the promises we make about merging or selling substantially all of our assets, which we describe above under “— Mergers and Similar Transactions.” If the holders approve a waiver of a covenant, we will not have to comply with it. The holders, however, cannot approve a waiver of any provision in a particular debt security, or in the indenture as it affects that debt security, that we cannot change without the approval of the holder of that debt security as described above in “— Changes Requiring Each Holder’s Approval,” unless that holder approves the waiver.

We may issue particular debt securities or a particular series of debt securities, as applicable, that are entitled, by their terms, to separately approve matters (for example, modification or waiver of provisions in the indenture) that would also, or otherwise, require approval of holders of a majority in principal amount of all affected debt securities of all affected series issued under the indenture voting together as a single class. Any such affected debt securities or series of debt securities would be entitled to approve such matters (i) pursuant to such special rights by consent of holders of a majority in principal amount of such affected debt securities or series of debt securities voting separately as a class and (ii) in addition, as described above, except as may otherwise be provided pursuant to the indenture for such debt securities or series of debt securities, by consent of holders of a majority in principal amount of such affected debt securities or series of debt securities and all other affected debt securities of all series issued under the indenture voting together as one class for this purpose. We may issue series or debt securities of a series having these or other special voting rights without obtaining the consent of or giving notice to holders of outstanding debt securities or series.

Book-entry and other indirect owners should consult their banks or brokers for information on how approval may be granted or denied if we seek to change an indenture or any debt securities or request a waiver.

Special Rules for Action by Holders

Only holders of outstanding debt securities of the applicable series will be eligible to take any action under the indenture, such as giving a notice of default, declaring an acceleration, approving any change or waiver or giving the trustee an instruction with respect to debt securities of that series. Also, we will count only outstanding debt securities in determining whether the various percentage requirements for taking action have been met. Any debt securities owned by us or any of our affiliates or surrendered for cancellation or for payment or redemption, for which money has been set aside in trust, are not deemed to be outstanding. Any required approval or waiver must be given by written consent.

In some situations, we may follow special rules in calculating the principal amount of debt securities that are to be treated as outstanding for the purposes described above. This may happen, for example, if the principal amount is payable in a non-U.S. dollar currency, increases over time or is not to be fixed until maturity.

We will generally be entitled to set any day as a record date for the purpose of determining the holders that are entitled to take action under the indenture. In certain limited circumstances, only the trustee will be entitled to set a record date for action by holders. If we or the trustee sets a record date for an approval or other action to be taken by holders, that vote or action may be taken only by persons or entities who are holders on the record date and must be taken during the period that we specify for this purpose, or that the trustee specifies if it sets the record date. We or the trustee, as applicable, may shorten or lengthen this period from time to time. This period, however, may not extend beyond the 180th day after the record

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date for the action. In addition, record dates for any global debt security may be set in accordance with procedures established by the depositary from time to time. Accordingly, record dates for global debt securities may differ from those for other debt securities.

Form, Exchange and Transfer

If any debt securities cease to be issued in registered global form, they will be issued:

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only in fully registered form;

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without interest coupons; and

•

unless we indicate otherwise in the applicable prospectus supplement, in denominations of $1,000 and integral multiples of $1,000.

Holders may exchange their debt securities for debt securities of smaller denominations or combined into fewer debt securities of larger denominations, as long as the total principal amount is not changed. Holders may not exchange debt securities for securities of a different series or having different terms, unless the applicable prospectus supplement and the supplemental indenture with respect to such debt securities provide for such exchange.

Holders may exchange or transfer their debt securities at the office of the trustee. They may also replace lost, stolen, destroyed or mutilated debt securities at that office. We have appointed the trustee to act as our agent for registering debt securities in the names of holders and transferring and replacing debt securities. We may appoint another entity to perform these functions or perform them ourselves.

Holders will not be required to pay a service charge to transfer or exchange their debt securities, but they may be required to pay for any tax or other governmental charge associated with the exchange or transfer. The transfer or exchange, and any replacement, will be made only if our transfer agent is satisfied with the holder’s proof of legal ownership. The transfer agent may require an indemnity before replacing any debt securities.

If we have designated additional transfer agents for a debt security, they will be named in the applicable prospectus supplement. We may appoint additional transfer agents or cancel the appointment of any particular transfer agent. We may also approve a change in the office through which any transfer agent acts.

If the debt securities of any series are redeemable and we redeem less than all those debt securities, we may block the transfer or exchange of those debt securities during the period beginning 15 days before the day we mail the notice of redemption and ending on the day of that mailing, in order to freeze the list of holders to prepare the mailing. We may also refuse to register transfers of or exchange any debt security selected for redemption, except that we will continue to permit transfers and exchanges of the unredeemed portion of any debt security being partially redeemed.

If a debt security is issued as a global debt security, only DTC or other depositary will be entitled to transfer and exchange the debt security as described in this subsection because the depositary will be the sole holder of the debt security.

The rules for exchange described above apply to exchange of debt securities for other debt securities of the same series and kind. If a debt security is convertible, exercisable or exchangeable into or for a different kind of security, such as one that we have not yet issued, or for other property, the rules governing that type of conversion, exercise or exchange will be described in the applicable prospectus supplement.

Payments

We will pay interest, principal and other amounts payable with respect to the debt securities of any series to the holders of record of those debt securities as of the record dates and otherwise in the manner specified below or in the prospectus supplement for that series.

We will make payments on a global debt security in accordance with the applicable policies of the depositary as in effect from time to time. Under those policies, we will pay directly to the depositary, or its nominee, and not to any indirect owners who own beneficial interests in the global debt security. An indirect owner’s right to receive those payments will be governed by the rules and practices of the depositary and its participants.

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We will make payments on a debt security in non-global, registered form as follows. We will pay interest that is due on an interest payment date by check mailed on the interest payment date to the holder at his or her address shown on the trustee’s records as of the close of business on the regular record date. We will make all other payments by check at the paying agent described below, against surrender of the debt security. All payments by check will be made in next-day funds — i.e., funds that become available on the day after the check is cashed.

Alternatively, if a non-global debt security has a face amount of at least $1,000,000 and the holder asks us to do so, we will pay any amount that becomes due on the debt security by wire transfer of immediately available funds to an account at a bank in New York City, on the due date. To request wire payment, the holder must give the paying agent appropriate wire transfer instructions at least five business days before the requested wire payment is due. In the case of any interest payment due on an interest payment date, the instructions must be given by the person or entity who is the holder on the relevant regular record date. In the case of any other payment, payment will be made only after the debt security is surrendered to the paying agent. Any wire instructions, once properly given, will remain in effect unless and until new instructions are given in the manner described above.

Book-entry and other indirect owners should consult their banks or brokers for information on how they will receive payments on their debt securities.

Regardless of who acts as paying agent, subject to applicable escheatment law, all money paid by us to a paying agent that remains unclaimed at the end of two years after the amount is due to a holder will be repaid to us. After that two-year period, the holder may look only to us for payment and not to the trustee, any other paying agent or anyone else.

Paying Agents

We may appoint one or more financial institutions to act as our paying agents, at whose designated offices debt securities in non-global entry form may be surrendered for payment at their maturity. We call each of those offices a paying agent. We may add, replace or terminate paying agents from time to time. We may also choose to act as our own paying agent. We will specify in the prospectus supplement for a debt security the initial location of each paying agent for that debt security. We must notify the trustee of changes in the paying agents.

Notices

Notices to be given to holders of a global debt security will be given only to the depositary, in accordance with its applicable policies as in effect from time to time. Notices to be given to holders of debt securities not in global form will be sent by mail to the respective addresses of the holders as they appear in the trustee’s records, and will be deemed given when mailed. Neither the failure to give any notice to a particular holder, nor any defect in a notice given to a particular holder, will affect the sufficiency of any notice given to another holder.

Book-entry and other indirect owners should consult their banks or brokers for information on how they will receive notices.

Our Relationship with the Trustee

The prospectus supplement for a debt security will describe any material relationships we may have with the trustee with respect to that debt security.

DESCRIPTION OF WARRANTS

We may issue warrants for the purchase of our equity or debt securities. Warrants may be offered separately or together with other securities, as the case may be, and may be attached to or separate from any offered securities. Each series of warrants will be issued under a separate warrant indenture to be entered into between the Company and one or more banks or trust companies acting as warrant agent. The applicable prospectus supplement will include details of the terms and conditions of the warrants being offered. The warrant agent will act solely as the Company’s agent and will not assume a relationship

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of agency with any holders of warrant certificates or beneficial owners of warrants. The following sets forth certain general terms and provisions of the warrants that may be offered under this prospectus. The specific terms of the warrants, and the extent to which the general terms described in this section apply to those warrants, will be set forth in the applicable prospectus supplement. If applicable, the Company will file with the SEC as exhibits to the registration statement of which this prospectus is a part, or will incorporate by reference from a current report on Form 8-K filed with the SEC, any warrant indenture or form of warrant describing the terms and conditions of such warrants that the Company is offering before the issuance of such warrants.

The particular terms of each issue of warrants will be described in the related prospectus supplement. This description will include, where applicable:

•

the designation and aggregate number of warrants;

•

the price at which the warrants will be offered;

•

the currency or currencies in which the warrants will be offered;

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the amount of warrants outstanding;

•

the designation and terms of the Common Shares purchasable or debt securities that may be issued upon exercise of the warrants;

•

the date on which the right to exercise the warrants will commence and the date on which the right will expire;

•

the number of Common Shares that may be purchased upon exercise of each warrant and the price at which and currency or currencies in which the Common Shares may be purchased upon exercise of each warrant, including provisions for changes to or adjustments in the exercise price;

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the principal amount of debt securities that may be purchased upon exercise of a warrant and the price at which the debt securities may be purchased upon exercise;

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the designation and terms of any securities with which the warrants will be offered, if any, and the number of the warrants that will be offered with each security;

•

the date or dates, if any, on or after which the warrants and the related securities will be transferable separately;

•

whether the warrants will be subject to redemption or call and, if so, the terms of such redemption or call provisions;

•

material United States and Canadian tax consequences of owning the warrants; and

•

any other material terms or conditions of the warrants.

Prior to the exercise of their warrants, holders of warrants will not have any of the rights of holders of Common Shares, preferred shares or debt securities issuable upon exercise of the warrants. The Company reserves the right to set forth in a prospectus supplement specific terms of the warrants that are not within the options and parameters set forth in this prospectus. In addition, to the extent that any particular terms of the warrants described in a prospectus supplement differ from any of the terms described in this prospectus, the description of such terms set forth in this prospectus shall be deemed to have been superseded by the description of such differing terms set forth in such prospectus supplement with respect to such warrants.

DESCRIPTION OF SUBSCRIPTION RECEIPTS

The Company may issue subscription receipts, which will entitle holders to receive upon satisfaction of certain release conditions and for no additional consideration, Common Shares, preferred shares, debt securities, warrants or a combination thereof. Subscription receipts will be issued pursuant to one or more subscription receipt agreements (each, a “Subscription Receipt Agreement”), each to be entered into between the Company and an escrow agent (the “Escrow Agent”), which will establish the terms and conditions of the subscription receipts. Each Escrow Agent will be a financial institution organized under the laws of Canada or a province thereof and authorized to carry on business as a trustee. In the United

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States, the Company will file as exhibits to the registration statement of which this prospectus is a part, or will incorporate by reference from a current report on Form 8-K filed with the SEC, any Subscription Receipt Agreement describing the terms and conditions of subscription receipts the Company is offering before the issuance of such subscription receipts. In Canada, the Company will file on SEDAR a copy of any Subscription Receipt Agreement after the Company has entered into it.

The following description sets forth certain general terms and provisions of subscription receipts and is not intended to be complete. The statements made in this prospectus relating to any Subscription Receipt Agreement and subscription receipts to be issued thereunder are summaries of certain anticipated provisions thereof and are subject to, and are qualified in their entirety by reference to, all provisions of the applicable Subscription Receipt Agreement and the prospectus supplement describing such Subscription Receipt Agreement. The Company urges you to read the applicable prospectus supplement related to the particular subscription receipts that the Company sells under this prospectus, as well as the complete Subscription Receipt Agreement.

The prospectus supplement and the Subscription Receipt Agreement for any subscription receipts the Company offers will describe the specific terms of the subscription receipts and may include, but are not limited to, any of the following:

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the designation and aggregate number of subscription receipts offered;

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the price at which the subscription receipts will be offered, including provisions for changes to or adjustments in price at which subscription receipts will be offered;

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the currency or currencies in which the subscription receipts will be offered;

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the amount of subscription receipts outstanding;

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the designation, number and terms of the Common Shares, preferred shares, debt securities, warrants or combination thereof to be received by holders of subscription receipts upon satisfaction of the release conditions, and the procedures that will result in the adjustment of those numbers;

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the conditions (the “Release Conditions”) that must be met in order for holders of subscription receipts to receive for no additional consideration Common Shares, preferred shares, debt securities, warrants or a combination thereof;

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the procedures for the issuance and delivery of Common Shares, preferred shares, debt securities, warrants or a combination thereof to holders of subscription receipts upon satisfaction of the Release Conditions;

•

whether any payments will be made to holders of subscription receipts upon delivery of the Common Shares, preferred shares, debt securities, warrants or a combination thereof upon satisfaction of the Release Conditions (e.g., an amount equal to dividends declared on Common Shares by the Company to holders of record during the period from the date of issuance of the subscription receipts to the date of issuance of any Common Shares pursuant to the terms of the Subscription Receipt Agreement);

•

the terms and conditions under which the Escrow Agent will hold all or a portion of the gross proceeds from the sale of subscription receipts, together with interest and income earned thereon (collectively, the “Escrowed Funds”), pending satisfaction of the Release Conditions;

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the terms and conditions pursuant to which the Escrow Agent will hold Common Shares, preferred shares, debt securities, warrants or a combination thereof pending satisfaction of the Release Conditions;

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the terms and conditions under which the Escrow Agent will release all or a portion of the Escrowed Funds to the Company upon satisfaction of the Release Conditions;

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if the subscription receipts are sold to or through underwriters or agents, the terms and conditions under which the Escrow Agent will release a portion of the Escrowed Funds to such underwriters or agents in payment of all or a portion of their fees or commission in connection with the sale of the subscription receipts;

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procedures for the refund by the Escrow Agent to holders of subscription receipts of all or a portion of the subscription price for their subscription receipts, plus any pro rata entitlement to interest earned or income generated on such amount, if the Release Conditions are not satisfied;

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any contractual right of rescission to be granted to initial purchasers of subscription receipts in the event this prospectus, the prospectus supplement under which subscription receipts are issued or any amendment hereto or thereto contains a misrepresentation;

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any entitlement of the Company to purchase the subscription receipts in the open market by private agreement or otherwise;

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whether the Company will issue the subscription receipts as global securities and, if so, the identity of the depositary for the global securities;

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whether the Company will issue the subscription receipts as bearer securities, registered securities or both;

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provisions as to modification, amendment or variation of the Subscription Receipt Agreement or any rights or terms attaching to the subscription receipts;

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the identity of the Escrow Agent;

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whether the subscription receipts will be listed on any exchange;

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material United States and Canadian federal tax consequences of owning the subscription receipts; and

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any other terms of the subscription receipts.

The holders of subscription receipts will not be shareholders of the Company. Holders of subscription receipts are entitled only to receive Common Shares, preferred shares, debt securities, warrants or a combination thereof on exchange of their subscription receipts, plus any cash payments provided for under the Subscription Receipt Agreement, if the Release Conditions are satisfied. If the Release Conditions are not satisfied, the holders of subscription receipts shall be entitled to a refund of all or a portion of the subscription price therefor and all or a portion of the pro rata share of interest earned or income generated thereon, as provided in the Subscription Receipt Agreement.

The Company reserves the right to set forth in a prospectus supplement specific terms of the subscription receipts that are not within the options and parameters set forth in this prospectus. In addition, to the extent that any particular terms of the subscription receipts described in a prospectus supplement differ from any of the terms described in this prospectus, the description of such terms set forth in this prospectus shall be deemed to have been superseded by the description of such differing terms set forth in such prospectus supplement with respect to such subscription receipts.

DESCRIPTION OF UNITS

The Company may issue units comprised of one or more of the other securities described in this prospectus in any combination. Each unit will be issued so that the holder of the unit is also the holder of each security included in the unit. Thus, the holder of a unit will have the rights and obligations of a holder of each included security. The unit agreement, if any, under which a unit is issued may provide that the securities comprising the unit may not be held or transferred separately, at any time or at any time before a specified date. If applicable, the Company will file with the SEC as exhibits to the registration statement of which this prospectus is a part, or will incorporate by reference from a current report on Form 8-K filed with the SEC, any unit agreement describing the terms and conditions of such units that Perpetua Resources is offering before the issuance of such units.

The particular terms and provisions of units offered by any prospectus supplement, and the extent to which the general terms and provisions described below may apply thereto, will be described in the prospectus supplement filed in respect of such units. This description will include, where applicable:

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the designation and aggregate number of units offered;

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the price at which the units will be offered, including provisions for changes to or adjustments in price at which units will be offered;

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the currency or currency unit in which the units are denominated;

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the amount of units outstanding;

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the terms of the units and of the securities comprising the units, including whether and under what circumstances those securities may be held or transferred separately;

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the number of securities that may be purchased upon exercise of each unit and the price at which and currency or currency unit in which that amount of securities may be purchased upon exercise of each unit;

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any provisions for the issuance, payment, settlement, transfer or exchange of the units or of the securities comprising the units; and

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any other material terms, conditions and rights (or limitations on such rights) of the units.

The Company reserves the right to set forth in a prospectus supplement specific terms of the units that are not within the options and parameters set forth in this prospectus. In addition, to the extent that any particular terms of the units described in a prospectus supplement differ from any of the terms described in this prospectus, the description of such terms set forth in this prospectus shall be deemed to have been superseded by the description of such differing terms set forth in such prospectus supplement with respect to such units.

SELLING SHAREHOLDERS

To the extent named as a selling shareholder in a prospectus supplement, an amendment to this registration statement or another permissible means, certain selling shareholders affiliated with Paulson, who will be named in a prospectus supplement, may offer and sell from time to time pursuant to this prospectus, up to 24,771,542 Common Shares. All of these shares were issued to the selling shareholders upon conversion of convertible notes issued in March 2016 and March 2020 or purchased in our August 2021 equity offering and are subject to certain registration rights set forth in the Paulson Investor Rights Agreement. See “Description of Share Capital — Registration Rights” for more information. Paulson is an affiliate of the Company and has the right to designate two board members so long as Paulson holds not less than 20% of our Common Shares and the right to designate one board member so long as Paulson holds not less than 10% of our Common Shares.

Information about the selling shareholders, where applicable, including their identities, the amount of Common Shares owned by each selling shareholder prior to the offering, the number of Common Shares to be offered by each selling shareholder and the amount of Common Shares to be owned by each selling shareholder after completion of the offering, will be set forth in an applicable prospectus supplement, an amendment to this registration statement or another permissible means. The applicable prospectus supplement, amendment or other permissible disclosure document will also disclose whether any of the selling shareholders has held any position or office with, has been employed by or otherwise has had a material relationship with us during the three years prior to the date of the prospectus supplement.

The selling shareholders may not sell any Common Shares pursuant to this prospectus until we have identified such selling shareholders and the Common Shares being offered for resale by such selling shareholders in a subsequent prospectus supplement, an amendment to this registration statement or another permissible means. However, the selling shareholders may sell or transfer all or a portion of their Common Shares pursuant to any available exemption from the registration requirements of the Securities Act.

PLAN OF DISTRIBUTION

We may sell the securities offered by this prospectus in any one or more of the following ways from time to time:

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to or through one or more underwriters, initial purchasers, brokers, or dealers;

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through agents to investors or the public;

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in short or long transactions;

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through put or call option transactions relating to our Common Shares;

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directly to agents or other purchasers

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in “at the market offerings” within the meanings of Rule 415(a)(4) of the Securities Act and Canadian National Instrument 44-102 — Shelf Distributions, to or through a market maker or into an existing trading market, on an exchange or otherwise;

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though a combination of any such methods of sale; or

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through any other method described in the applicable prospectus supplement.

The applicable prospectus supplement will set forth the terms of the offering and the method of distribution and will identify any firms acting as underwriters, initial purchasers, dealers, or agents in connection with the offering, including:

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the terms of the offering;

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the names of any underwriters, dealers, or agents;

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the name or names of any managing underwriter or underwriters;

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the purchase price of the securities and the proceeds to us from the sale;

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any options (whether or not for over-allotments) under which the underwriters may purchase additional Common Shares from us;

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any underwriting discounts, concessions, commissions, or agency fees and other items constituting compensation to underwriters, dealers, or agents;

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any delayed delivery arrangements;

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any public offering price;

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any discounts or concessions allowed or re-allowed or paid by underwriters or dealers to other dealers; or

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any securities exchange or market on which the Common Shares offered in the prospectus supplement may be listed.

If we use underwriters for a sale of securities, the underwriters will acquire the securities for their own account for resale to the public, either on a firm commitment basis or a best efforts basis. The underwriters may resell the securities in one or more transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. Underwriters may offer the securities to the public either through underwriting syndicates represented by one or more managing underwriters or directly by one or more firms acting as underwriters. If an underwriter or underwriters are used in the sale of securities hereunder, an underwriting agreement will be executed with the underwriter or underwriters at the time an agreement for sale is reached. Unless we inform the holder otherwise in the applicable prospectus supplement, the obligations of the underwriters to purchase the securities will be subject to certain conditions. We may change from time to time any public offering price and any discounts or concessions the underwriters allow or pay to dealers.

During and after an offering through underwriters, the underwriters may purchase and sell the securities in the open market. These transactions may include overallotment and stabilizing transactions and purchases to cover syndicate short positions created in connection with the offering. The underwriters may also impose a penalty bid, which means that selling concessions allowed to syndicate members or other broker-dealers for the offered securities sold for their account may be reclaimed by the syndicate if the offered securities are repurchased by the syndicate in stabilizing or covering transactions. These activities may stabilize, maintain, or otherwise affect the market price of the offered securities, which may be higher than the price that might otherwise prevail in the open market. If commenced, the underwriters may discontinue these activities at any time.

Some or all of the securities that we offer though this prospectus may be new issues of securities with no established trading market. Any underwriters to whom we sell our securities for public offering and sale

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may make a market in those securities, but they will not be obligated to do so and they may discontinue any market making at any time without notice. Accordingly, we cannot assure the holder of the liquidity of, or continued trading markets for, any securities that we offer.

If dealers are used for the sale of securities, we or an underwriter, will sell the securities to them as principals. The dealers may then resell those securities to the public at varying prices determined by the dealers at the time of resale. We will include in the applicable prospectus supplement the names of the dealers and the terms of the transaction.

We may also sell the securities through agents designated from time to time. In the applicable prospectus supplement, we will name any agent involved in the offer or sale of the offered securities, and we will describe any commissions payable to the agent. Unless we inform the holder otherwise in the applicable prospectus supplement, any agent will agree to use its reasonable best efforts to solicit purchases for the period of its appointment.

We may sell the securities directly in transactions not involving underwriters, dealers, or agents.

We may sell the securities directly to institutional investors or others who may be deemed to be underwriters within the meaning of the Securities Act with respect to any sale of those securities. We will describe the terms of any such sales in the prospectus supplement.

Underwriters, dealers, and agents that participate in the distribution of the securities may be underwriters as defined in the applicable securities laws and any discounts or commissions they receive from us and any profit on their resale of the securities may be treated as underwriting discounts and commissions under the applicable securities laws. We will identify in the applicable prospectus supplement any underwriters, dealers, or agents and will describe their compensation. We may have agreements with the underwriters, dealers, and agents to indemnify them against specified civil liabilities, including liabilities under the applicable securities laws.

Underwriters, dealers, and agents may engage in transactions with or perform services for us in the ordinary course of their businesses for which they may receive customary fees and reimbursement of expenses.

We may use underwriters with whom we have a material relationship. We will describe the nature of such relationship in the applicable prospectus supplement.

Under the securities laws of some states, the securities offered by this prospectus may be sold in those states only through registered or licensed brokers or dealers.

We may enter into hedging transactions with broker-dealers and the broker-dealers may engage in short sales of the securities in the course of hedging the positions they assume with us, including, without limitation, in connection with distributions of the securities by those broker-dealers. We may enter into option or other transactions with broker-dealers that involve the delivery of the securities offered hereby to the broker-dealers, who may then resell or otherwise transfer those securities. We may also loan or pledge the securities offered hereby to a broker-dealer and the broker-dealer may sell the securities offered hereby so loaned or upon a default may sell or otherwise transfer the pledged securities offered hereby.

Subject to the terms of the Paulson Investor Rights Agreement, any selling shareholder that may be named in any supplement to this prospectus, an amendment to this registration statement or another permissible means may sell, transfer, loan or pledge the securities offered by such selling shareholders in any one or more of the methods described above. The applicable prospectus supplement or other permissible disclosure document will include certain information about any selling shareholder, including the name of such selling shareholder, the number of Common Shares to be offered by such selling shareholder and certain additional information as described in “Selling Shareholders.” Such prospectus supplement or other permissible disclosure document will also set forth the terms and the method of distribution of any such offering and will identify any firms acting as underwriters, initial purchasers, dealers, or agents in connection with such offering.

LEGAL MATTERS

Certain legal matters in connection with the securities will be passed upon by Cozen O’Connor LLP, Vancouver, British Columbia, with respect to Canadian legal matters, and by Vinson & Elkins L.L.P.,

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New York, New York, with respect to U.S. legal matters as our counsel. Any underwriter will be advised about other issues relating to any offering by its own legal counsel.

EXPERTS

The financial statements as of December 31, 2021 and for the year ended December 31, 2021 incorporated in this prospectus by reference to the Annual Report on Form 10-K for the year ended December 31, 2021 have been so incorporated in reliance on the report of PricewaterhouseCoopers LLP, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting.

The financial statements of Perpetua Resources Corp. as of and for the year ended December 31, 2020 incorporated by reference in this prospectus by reference to Perpetua Resources Corp.’s Annual Report on Form 10-K for the year ended December 31, 2021, have been audited by Deloitte LLP, independent registered public accounting firm, as stated in their report. Such financial statements are incorporated by reference in reliance upon the report of such firm given their authority as experts in accounting and auditing.

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Richard Zimmerman, SME-RM and Art Ibrado, P.E. with M3 Engineering & Technology Corporation;

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Garth Kirkham, P.Geo. with Kirkham Geosystems Ltd.;

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Andrew Kelly, P.Eng. with Blue Coast Metallurgy Ltd.;

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Grenvil Dunn, C.Eng. with Hydromet WA (Pty) Ltd.;

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Chris Roos, P.E. and Scott Rosenthal P.E. with Value Consulting, Inc.;

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Peter Kowalewski, P.E. with Tierra Group International, Ltd.; and

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Christopher Dail, Exploration Manager for Perpetua Resources Idaho, Inc.

Such estimates and related information have been incorporated by reference herein in reliance upon the authority of such firms or individuals as experts in such matters.

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Perpetua Resources Corp.

Up to $20,000,000

Common Shares

PROSPECTUS SUPPLEMENT

May 12, 2023

Perpetua Resources (PPTA) 424B5Prospectus supplement for primary offering