Disclosures and Forward Looking Statements

Legal Disclaimer

Unless otherwise indicated, all content on this website is the property of Perpetua Resources Corp. (the “Company”) and is protected by applicable copyright and other intellectual property laws. No use, reproduction or distribution of any content from this website is permitted without the Company’s prior written consent.

The Company updates the information on this website periodically; however, such information is provided for general informational purposes only and is not intended to be a complete review of all matters relating to the Company, its subsidiaries or its properties. The Company does not warrant or guarantee the accuracy, completeness or timeliness of the content on this website and assumes no liability in connection therewith, except as required by applicable law.

By using this website, you acknowledge that you have reviewed and understand the disclaimers and terms applicable to its use.

Website Content

The information on this website is provided for general informational purposes only and is not intended to replace, modify, qualify, supplement or amend any information disclosed by the Company under applicable securities laws. This website should not be used as a basis for making investment decisions.

All share price quotes and historical share price data on this website are provided by third-party service providers and are for informational purposes only. Share price quotes may be delayed and should not be relied upon for trading purposes. The Company does not represent or warrant as to the accuracy or completeness of any share price quote or historical share price data and undertakes no obligation to verify such information.

Forward-Looking Statements

Information and statements contained on this website that are not historical facts are “forward-looking information” or “forward-looking statements” (collectively, “Forward-Looking Information”) within the meaning of applicable Canadian securities legislation and the United States Private Securities Litigation Reform Act of 1995. We use words such as “may,” “would,” “could,” “should,” “will,” “likely,” “expect,” “anticipate,” “believe,” “intend,” “plan,” “potential,” “forecast,” “outlook,” “project,” “estimate” the negatives thereof, variations thereon and similar expressions suggesting future outcomes or events are intended to identify forward-looking statements or forward-looking information, although not all forward-looking statements contain such identifying words. Forward-Looking Information 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. Except as required by law, the Company expressly disclaims any obligation to update the Forward-Looking Information on this website.

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.

There can be no assurance that Forward-Looking Information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on Forward-Looking Information. For further information on risks and uncertainties that may affect the Company’s business and liquidity, see the “Risk Factors,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Cautionary Note Regarding Forward-Looking Statements” sections of the Company’s filings with the U.S. Securities and Exchange Commission (the “SEC”), which are available at www.sec.gov, and the Company’s filings with the Canadian securities regulators, which are available at www.sedarplus.com, in addition to the risks and uncertainties discussed in similarly titled sections and elsewhere in Company materials that have been, or will be, made publicly available. Information contained on this website is fully qualified by the full disclosure contained in the Company’s filings with the SEC, Canadian securities regulators and published Company materials.

Cautionary Statement Regarding Reserve and Technical Information

The material scientific and technical information in respect of the Stibnite Gold Project contained on this website, unless otherwise indicated, is based upon information contained in the technical report titled “Stibnite Gold Project, S-K 1300 Technical Report Summary, Valley County, Idaho, USA,” dated as of December 31, 2025 (the “TRS”), developed for the Stibnite Gold Project in accordance with the mining property disclosure rules specified in Regulation S-K subpart 1300 (“S-K 1300”) promulgated by the SEC and published on March 31, 2026. Such information is as of December 31, 2025, and is subject to the assumptions, exclusions and qualifications set forth in the TRS.

Any mineral reserves and mineral resources reported in the Technical Report Summary by the Company in accordance with S-K 1300 may not qualify as such under, or may differ from, those prepared in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). Accordingly, information included or incorporated by reference on this website concerning descriptions of mineralization and estimates of mineral reserves and mineral resources under U.S. standards may not be comparable to similar information made public by Canadian companies in accordance with the reporting and disclosure requirements of NI 43-101.

For additional information regarding the TRS, investors are encouraged to refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2025, filed with the SEC on March 31, 2026.