Press Releases

Natalie Podgorski 7/12/22 Natalie Podgorski 7/12/22

Perpetua Resources Begins Investment in Water Quality Improvements at Historic Mine Site

Idaho Governor Brad Little, members of the Idaho Congressional Delegation, and representatives from local communities celebrate this milestone for abandoned mine site restoration.

BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) was joined today by community members, government officials and local business leaders at a groundbreaking ceremony to mark the beginning of early cleanup activities and water quality improvements to benefit the historic Stibnite mining district. After 100 years of mining activity, the millions of tons of unconstrained tailings and mine waste left behind by previous operators has been degrading water quality for decades. Today’s groundbreaking ceremony marked the start of a multi-year, multi-million-dollar investment designed to improve environmental conditions at the historic site. The first four-year phase of the project includes removing 325,000 tons of legacy waste and tailings away from the river and rerouting streams to keep clean water clean. High-ranking elected officials from across the state agree the work being done by Perpetua Resources is a model for private investment to help address legacy environmental issues at historic mine sites.

“We did not cause the contamination that has worsened water quality in the historic Stibnite Mining District for decades, but we are part of the solution,” said Laurel Sayer, CEO of Perpetua Resources. “Today, we put our commitments into action and are demonstrating that when we work together, big ideas can become reality. We are grateful for the coordination of our state and federal agencies who helped shape this visionary solution to revive this historic mine site. We are proud to bring much needed stewardship to Idaho’s headwaters.”

Perpetua worked with the Environmental Protection Agency (“EPA”) and the United States Department of Agriculture (“USDA”) for more than three years to receive permission to conduct time critical, early action cleanup activities. After consultation with other interested parties, including the Idaho Department of Environmental Quality, Perpetua Resources, the EPA and USDA signed an Administrative Settlement Agreement and Order on Consent (“the Agreement”) in 2021 paving the way for Perpetua to address legacy issues in key areas of the Stibnite district.

“Idaho’s natural resources can contribute a steady domestic supply of the materials we need to advance our economy,” said Idaho Governor Brad Little. “At the same time, cleanup projects like you see here at Stibnite are a critical part of the future of responsible mining in Idaho. Idaho has a rich history of collaborative work that balances economic prosperity with environmental stewardship. Perpetua Resources is another great example of this responsible balance, and I applaud their efforts to work with the respective agencies to make cleaning up the historic Stibnite mine site a reality.”

“I was pleased to see the EPA and USDA sign an agreement granting Perpetua Resources permission to voluntarily clean up key areas by the historical Stibnite mine site,” said Idaho Congressman Mike Simpson. “These time critical actions are long overdue and will focus on addressing the most immediate needs to improve water quality. This work proves that Perpetua is committed to leaving the abandoned mine site better than they found it. It is an important day for Idaho, we are all grateful to Perpetua for taking on this work.”

“Water is one of Idaho’s most treasured resources,” said Idaho Congressman Russ Fulcher. “Today’s announcement by Perpetua Resources shows the company shares this belief. By improving water quality in the historic Stibnite mining district through voluntary cleanup activities, Perpetua is showing the way for collaborative mining into the future.”

The groundbreaking ceremony involved sixty participants, including the Director of the Idaho Department of Environmental Quality Jess Byrne, Kimberly Glineski from the Idaho Department of Commerce, Mayor of Cascade Judy Nissula, residents of the Village of Yellow Pine, IMCO Construction CEO Tyler Kimberley, President and CEO of Perpetua Resources Laurel Sayer and many others.

On the behalf of Idaho Congressman Russ Fulcher, Cascade Mayor, Judy Nissula, presented Laurel Sayer with an American flag flown over the U.S. Capitol Building to commemorate the historic moment. “On behalf of our region, thank you for being good stewards of our community, our state and our environment,” said Mayor Nissula.

Early Action, Voluntary Environmental Improvements

Mining in the historic Stibnite Mining District first started in 1899. Stibnite then gained national significance during World War II when the U.S. Government commissioned antimony and tungsten production from the site to help with the war effort. In fact, Stibnite produced the majority of both minerals used by the U.S. during World War II and the U.S. Munitions Board credited the mine for shortening World War II by a year and saving a million American lives.

Unfortunately, most of the mining that occurred at Stibnite took place long before modern protections and regulations were established. As a result, the site was never fully reclaimed. Today, 10.5 million tons of unlined tailings and waste leach arsenic and antimony into ground and surface water, the East Fork of the South Fork of the Salmon River flows into an abandoned mining pit and habitat conditions are degraded. Perpetua Resources has proposed a redevelopment plan to mine the site for gold and the critical mineral antimony, while concurrently restoring the environment.

While the Stibnite Gold Project is currently under regulatory review, early cleanup actions are starting now. Perpetua, the EPA and the U.S. Forest Service have worked together to develop a detailed scope of work for Phase One cleanup activities since signing the Agreement in early 2021. IMCO Construction was selected to oversee water quality improvements taking place this summer which will include:

Lining, improving and rerouting stream channels on site to keep clean water from interacting with old waste dumps on site
Removing the Defense Minerals Exploration Administration legacy waste rock dump from within and along a tributary to the East Fork of the South Fork of the Salmon River and restoring the original streamflow course

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Perpetua Resources Corp., through its wholly owned subsidiaries, is focused on the exploration, site restoration and redevelopment of gold-antimony-silver deposits in the Stibnite-Yellow Pine district of central Idaho that are encompassed by the Stibnite Gold Project. The 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. Further advancing Perpetua Resources’ ESG and sustainable mining goals, the Project will be powered by the lowest carbon emissions grid in the nation and a portion of the antimony produced from the Project will be supplied to Ambri, a US-based company commercializing a low-cost liquid metal battery essential for the low-carbon energy transition. In addition to the company’s commitments to transparency, accountability, environmental stewardship, safety and community engagement, Perpetua Resources adopted formal ESG commitments which can be found here.

Forward-Looking Information

Statements contained in this news release 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. Forward-Looking Information includes, but is not limited to, disclosure regarding possible events, next steps and courses of action including environmental clean up actions by us and our contractors; our ability to comply with and obtain permits related to the Stibnite Gold Project; actions to be taken by the State of Idaho and other government agencies and regulatory bodies; predictions regarding improvements to water quality and other environmental conditions at the site; reduction of the Project footprint and the anticipated benefits and other effects thereof; our and Ambri, Inc.’s ability to perform under the supply agreement, which agreement is subject to certain conditions, including identification of one or more refiners to transform our antimony concentrate into antimony metal, and mutual agreement on certain material terms, including volume and pricing. In certain cases, Forward-Looking Information can be identified by the use of words and phrases or variations of such words and phrases or statements such as "anticipate", “expect” “plan”, “likely”, “believe”, “intend”, “forecast”, “project”, “estimate”, "potential", "could", "may", "will", "would" or “should”. In preparing the Forward-Looking Information in this news release, Perpetua Resources has applied several material assumptions, including, but not limited to, assumptions that the current exploration, development, environmental and other objectives concerning the Stibnite Gold Project can be achieved and that its other corporate activities will proceed as expected; that the review process under the NEPA (including any joint review process involving the USFS, the State of Idaho and other agencies and regulatory bodies) as well as the public review process and SDEIS will proceed in a timely manner and as expected; and that all requisite information will be available in a timely manner. Forward-Looking Information are based on certain material assumptions and involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Perpetua Resources to be materially different from any future results, performance or achievements expressed or implied by the Forward-Looking Information. Such risks and other factors include those factors discussed in Perpetua Resources' public filings with the U.S. Securities and Exchange Commission (the “SEC”) and its Canadian disclosure record. Although Perpetua Resources has attempted to identify important factors that could affect Perpetua Resources and may cause actual actions, events or results to differ materially from those described in Forward-Looking Information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. 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 these and other risks and uncertainties that may affect the Company’s business, see the “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” sections of the Company’s filings with the SEC, which are available at www.sec.gov and with the Canadian securities regulators, which are available at www.sedar.com. Except as required by law, Perpetua Resources does not assume any obligation to release publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Guest User 6/24/22 Guest User 6/24/22

Perpetua Resources Publishes 2021 Sustainability Report

Perpetua Resources Corp. released its 2021 Sustainability Report highlighting the Company’s key achievements and progress in advancing its environmental, social and governance (“ESG”) goals. The report, which provides transparent disclosure of material ESG topics, is the Company’s ninth annual sustainability report and was developed in alignment with the Sustainability Accounting Standards Board (“SASB”) reporting framework for the Metals and Mining industry.

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Perpetua’s ninth annual Sustainability Report and the first developed in alignment with SASB reporting framework.

BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) released its 2021 Sustainability Report highlighting the Company’s key achievements and progress in advancing its environmental, social and governance (“ESG”) goals. The report, which provides transparent disclosure of material ESG topics, is the Company’s ninth annual sustainability report and was developed in alignment with the Sustainability Accounting Standards Board (“SASB”) reporting framework for the Metals and Mining industry.

“In 2021, Perpetua Resources took significant steps toward fulfilling our commitment to become a responsible mining company,” said Laurel Sayer, President and CEO of Perpetua Resources. “We launched a citizen’s water monitoring program, entered an antimony supply agreement to support the development of a clean energy storage battery and signed an agreement to start early environmental cleanup actions at site. Our annual sustainability report is an opportunity for our team to reflect on our accomplishments and is a tool to hold us accountable to the commitments we’ve made to our stakeholders.”

Perpetua Resources’ 2021 Sustainability Report provides an in-depth look at the Company’s achievements over the last year to advance its vision to provide the U.S. with a domestic source of the critical mineral antimony, develop one of the largest and highest-grade open pit gold mines in the country, and restore an abandoned brownfield site.

2021 Sustainability Report Highlights:

100% safe fuel hauls and 118 months with no reportable spills
67% female executive management and 33% gender or ethnically diverse board of directors
44% of site operations powered with solar power and first Greenhouse Gas emissions audit
83 community presentations and meetings
73 months with no lost time incidents
Adopted the SASB reporting framework and aligned with the UN Sustainable Development Goals
Launched an independent citizen’s water monitoring program
Signed an agreement to improve water quality at Stibnite

“Responsible mining and a more sustainable future go hand in hand,” said Sayer. “Support for mining in America will be influenced by our willingness to be transparent and accountable to our stakeholders, our dedication to positive environmental outcomes, and our ability to maintain the trust of our communities. As an aspiring modern mine developer, Perpetua is committed to robust ESG policies and practices and is continually thinking about how our actions will affect future generations of Idahoans.”

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Guest User 6/22/22 Guest User 6/22/22

Perpetua Resources Receives First Permit for the Stibnite Gold Project

Perpetua Resources Corp. received the Clean Air Act Permit to Construct for the Stibnite Gold Project from the Idaho Department of Environmental Quality on June 17, 2022. The Air Permit mandates compliance with state and federal air standards and regulates emissions from construction and operation of the Project.

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Perpetua Resources receives Clean Air Act Permit to Construct, a significant project milestone.

The Clean Air Act Permit is one of many permits the Company is seeking in parallel with the NEPA process.

BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) received the Clean Air Act Permit to Construct (“Air Permit”) for the Stibnite Gold Project (“Project”) from the Idaho Department of Environmental Quality (“IDEQ”) on June 17, 2022. The Air Permit mandates compliance with state and federal air standards and regulates emissions from construction and operation of the Project.

“Receipt of our first permit marks a significant milestone for the Stibnite Gold Project,” said Laurel Sayer, President, and CEO of Perpetua Resources. “The approval demonstrates our commitment to comply with state and federal standards and the dedication of our team to fulfill the requirements of the permitting process.”

During the Air Permit review process, IDEQ assessed the proposed air emissions and prescribed enforceable requirements to reduce air quality impacts from the Project. The final Air Permit is designed to ensure protection of public health and the environment. The emissions allowed by the Air Permit are consistent with the mine plan currently under review in the federal permitting process. The Air Permit is one of many permits Perpetua is seeking in parallel with the National Environmental Policy Act (“NEPA”) process, and the Company continues to anticipate the release of a Supplemental Draft Environmental Impact Statement (“SDEIS”) in the third quarter of 2022.

Perpetua submitted the Air Permit application to IDEQ in 2019. During the review process, IDEQ invited the public to comment on drafts of the Air Permit in September 2020, February 2021, and January 2022. Perpetua engaged experts in mining emissions and air quality to support the rigorous additional evaluations undertaken by IDEQ in response to public comments. The final Air Permit was published on June 21, 2022.

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Statements contained in this news release 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. Forward-Looking Information includes, but is not limited to, disclosure regarding possible events, next steps and courses of action including, our ability to comply with the Air Permit and obtain other permits related to the Stibnite Gold Project; our and Ambri, Inc.’s ability to perform under the supply agreement, which agreement is subject to certain conditions, including identification of one or more refiners to transform our antimony concentrate into antimony metal, and mutual agreement on certain material terms, including volume and pricing; the public review process and SDEIS will proceed in a timely manner and as expected and that all requisite information will be available in a timely manner; and the Stibnite Gold Project and the success of such project. In certain cases, Forward-Looking Information can be identified by the use of words and phrases or variations of such words and phrases or statements such as "anticipate", “expect” “plan”, “likely”, “believe”, “intend”, “forecast”, “project”, “estimate”, "potential", "could", "may", "will", "would" or “should”. Forward-Looking Information in this news release, including assumptions that the current development, environmental and other objectives concerning the Stibnite Gold Project can be achieved and that its activities will proceed as expected, are based on certain material assumptions and involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Perpetua Resources to be materially different from any future results, performance or achievements expressed or implied by the Forward-Looking Information. Such risks and other factors include those factors discussed in Perpetua Resources' public filings with the U.S. Securities and Exchange Commission (the “SEC”) and its Canadian disclosure record. Although Perpetua Resources has attempted to identify important factors that could affect Perpetua Resources and may cause actual actions, events or results to differ materially from those described in Forward-Looking Information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. 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 these and other risks and uncertainties that may affect the Company’s business, see the “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” sections of the Company’s filings with the SEC, which are available at www.sec.gov and with the Canadian securities regulators, which are available at www.sedar.com. Except as required by law, Perpetua Resources does not assume any obligation to release publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Guest User 6/21/22 Guest User 6/21/22

Perpetua Resources Applauds Congressional Action on Antimony and Defense Stockpile

Perpetua Resources Corp. Congress for taking steps to address vulnerabilities associated with the antimony supply chain – a mineral strategic to our national security efforts. Listed as a defense shortfall material by the Department of Defense and one of 50 critical minerals listed by the United States Geological Survey, antimony is essential for munitions and numerous other military products but is largely controlled by China and Russia.

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Senate and House Armed Services Committees include antimony in reports for the National Defense Authorization Act (“NDAA”).

Congress asks for briefing from Defense Logistics Agency (“DLA”) regarding the defense stockpile of antimony and supply chain vulnerabilities for the Chinese and Russian controlled mineral.

House includes $10 million in Defense Appropriation bill to study secure sourcing of antimony trisulfide for the Department of Defense.

Perpetua Resources could provide the only domestically mined source of antimony which is a critical mineral in many military applications and listed as a “material of interest” by the DLA.

BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) applauds the United States (“U.S.”) Congress for taking steps to address vulnerabilities associated with the antimony supply chain – a mineral strategic to our national security efforts. Listed as a defense shortfall material by the Department of Defense and one of 50 critical minerals listed by the United States Geological Survey, antimony is essential for munitions and numerous other military products but is largely controlled by China and Russia. Within the last two weeks, Congress has shown growing interest in the status and readiness of the National Defense Stockpile, taking specific action to require the Defense Logistics Agency to brief Congress on the status and future supply risks of the antimony stockpile and to increase spending to secure critical defense materials, including antimony. Currently, the United States is fully reliant on foreign sources for primary production of antimony.

“I am encouraged by the recognition from the Congressional committees with jurisdiction over national security that we simply cannot allow Russia and China to control our country’s access to munitions and military equipment,” said Laurel Sayer, President & CEO of Perpetua Resources. “Without immediate action to secure access to the minerals we need, America will continue to be vulnerable. Perpetua’s vision for the Stibnite Gold Project includes providing our nation with the only domestically mined source of antimony and, in doing so, offers solutions to help strengthen our national defense.”

Signaling bipartisan support to bolster the National Defense Stockpile, Democrat Senator Joe Manchin and Republican Senator Joni Ernst, who both serve on the Senate Armed Services Committee, released the Homeland Acceleration of Recovering Deposits and Renewing Onshore Critical Keystones Act (“HARD ROCK Act”) on June 14, 2022. “The reality is, when it comes to certain strategic and critical minerals, the United States is simply insufficiently developed to meet military and essential civilian needs,” said Senator Ernst when promoting the HARD ROCK Act.

Additional actions that raise awareness and preparedness regarding the antimony supply chain include:

On June 8, 2022, the House Armed Services Committee’s NDAA report cited concern that Chinese and Russian geopolitical dynamics could “accelerate supply chain disruptions, particularly with antimony” and therefore directs the Manager of the National Defense Stockpile at the Defense Logistics Agency to brief the committee on the status of the antimony stockpile and provide a five-year outlook on current and future supply chain vulnerabilities.
On June 15, 2022, the House Defense Appropriations Subcommittee included $10 million in its bill for the Army to study domestic sourcing and production of military grade antimony trisulfide for tank and medium caliber ammunition.
On June 16, 2022, the Senate Armed Services Committee’s NDAA also included a briefing requirement on antimony from DLA. Both the House and Senate will move the NDAA through the legislative process and both chambers are expected to vote on the bill later this year.
On June 16, 2022, the Senate NDAA also included $1 billion in funding for DLA to support the acquisition of critical defense materials, like antimony, for the National Defense Stockpile.

The Stibnite Gold Project (“Project”) is a proposed gold and antimony mine located in the historical Stibnite mining district in central Idaho. The abandoned mine site, which has seen over 100 years of mining activity and supplied most of the tungsten and antimony for the U.S. in World War II and the Korean War, still contains one of the largest known economic reserves of antimony not controlled by the Chinese and their interests. The Project is advancing through the National Environmental Policy Act (“NEPA”) permitting process and regulators have estimated a final record of decision in late 2023. If approved, the Project would be the only mined source of antimony in the U.S.

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Guest User 6/9/22 Guest User 6/9/22

Perpetua Resources Awards Contract for Early Cleanup Activities at Historical Mine Site

Perpetua Resources Corp. announced today that it selected IMCO Construction (“IMCO”) as a partner to begin water quality improvements in the historical Stibnite mining district from July to October 2022. Based in Washington with a regional office in Boise, IMCO is a nationally recognized, award winning firm with technical expertise in industrial, hydro, transportation, water and wastewater construction projects.

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Perpetua Resources’ voluntary improvements to water quality in historical Stibnite mining district expected to begin this summer.

Nationally recognized IMCO Construction selected to lead stream diversion and mine waste cleanup activities.

BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) announced today that it selected IMCO Construction (“IMCO”) as a partner to begin water quality improvements in the historical Stibnite mining district from July to October 2022. Based in Washington with a regional office in Boise, IMCO is a nationally recognized, award winning firm with technical expertise in industrial, hydro, transportation, water and wastewater construction projects.

Water quality at the abandoned Stibnite site has been degraded by elevated levels of arsenic and antimony from millions of tons of unconstrained tailings and other mine waste left behind by previous operators over the last 100 years. Perpetua has been granted permission from the Environmental Protection Agency (“EPA”) and the United States Department of Agriculture (“USDA”) to conduct time critical early action cleanup activities. Perpetua has been committed to site restoration as part of the Company’s vision and looks forward to taking meaningful steps to improve water quality.

“Action to improve water quality at Stibnite has been needed for decades,” said Laurel Sayer, CEO of Perpetua Resources. “As we break ground on the first phase of early cleanup efforts this summer, IMCO brings a track record of successfully executing complex projects safely and a set of shared values. Isolating streams away from historically contaminated material is a first step in fulfilling our goal of leaving the area better than it is today and demonstrates that responsible partnerships with private industry can benefit the environment and people of Idaho.”

IMCO Construction specializes in environmentally sensitive construction projects, working in remote locations for clients throughout Washington, Idaho, Oregon, Montana and beyond. From pre-construction through commissioning and operation, IMCO brings collaborative solutions and strong teamwork rooted in the core values of integrity, excellence, and family, and a relentless commitment to safety. IMCO was selected by Perpetua after a competitive bidding process.

“Our team is thrilled to partner with Perpetua Resources to begin cleanup activities at Stibnite this summer.” said Tyler Kimberley, President & CEO of IMCO Construction. “We understand the demands of working in sensitive backcountry environments. We look forward to bringing our commitment and technical expertise to protecting these critical environmental assets. We are proud to support Perpetua’s vision of restoring a brownfields site.”

In 2021, Perpetua Resources, the EPA and USDA signed an Administrative Settlement Agreement and Order on Consent (“ASAOC” or “Agreement”), giving Perpetua permission to voluntarily clean up key areas of the historical Stibnite mining district that would not otherwise be remedied by the additional legacy restoration proposed in the Stibnite Gold Project. Phase One of the Agreement provides a four-year period to conduct “time critical” cleanup actions designed to improve water quality. The remaining phases in the Agreement would allow for a more comprehensive remediation of the historical mining district should the Stibnite Gold Project receive permission to proceed upon conclusion of the National Environmental Policy Act (“NEPA”) review.

Perpetua, the EPA and the U.S. Forest Service have worked together to develop a detailed scope of work for Phase One cleanup activities since signing the Agreement in early 2021. The stream diversion work this summer is expected to include:

Lining and improving the existing Hennessy Creek diversion channel around the Northwest Bradley Waste Rock Dumps to prevent leakage into the dumps and the resulting uptake of metals.
Removing the Defense Minerals Exploration Administration (“DMEA”) legacy waste rock dump from within and along a tributary to the East Fork of the South Fork of the Salmon River and restoring the original streamflow course.
Creating a lined diversion for surface water that currently comes in contact with legacy contamination around Smelter Flats, the former mill and smelter site used by past operators.

The next “time critical” environmental improvements are expected to include the removal and relocation of at least 325,000 tons of historical tailings and mine waste away from the East Fork of the South Fork of the Salmon River.

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Natalie Podgorski 6/6/22 Natalie Podgorski 6/6/22

Perpetua Resources Welcomes Value-Oriented Kopernik as New Shareholder

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BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) welcomes Kopernik Global Investors LLC (“Kopernik”) as a new shareholder following a recent market purchase. Kopernik is a global, value-oriented investor with a proven track record of successful investments, including in the metals and mining space.

“We are excited to welcome Kopernik as a shareholder,” said Laurel Sayer, President & CEO of Perpetua Resources. “Perpetua shares are currently trading at a significant discount to the Stibnite Gold Project’s value and this has been recognized. We believe this investment further supports our vision and superior value proposition.”

Perpetua Resources’ vision is to provide the U.S. with a domestic source of the critical mineral antimony, develop one of the largest and highest-grade open pit gold mines in the country and restore an abandoned brownfields site. The Stibnite Gold Project is currently progressing into the later stages of the permitting process, and the Company anticipates the release of a Supplemental Draft Environmental Impact Statement (“SDEIS”) in the third quarter of 2022.

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Guest User 5/26/22 Guest User 5/26/22

Perpetua Resources Reports Results of 2022 Annual Meeting

Perpetua Resources Corp. today announced the results of its annual general and special meeting (the “Annual Meeting”), which was held online through a virtual meeting platform on May 25, 2022.

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BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) today announced the results of its annual general and special meeting (the “Annual Meeting”), which was held online through a virtual meeting platform on May 25, 2022.

A total of 43,798,425 common shares were represented at the Annual Meeting, or 69.55% of the votes attached to all outstanding shares at the Company’s record date of April 4, 2022. The Company’s shareholders voted in favor of fixing the number of directors at 9 (99.64% voted in favor) and for the election of all director nominees listed in the Company’s management information proxy circular. Detailed results of the vote for the election of directors are as follows:

The directors were elected to hold offices until the next annual meeting of shareholders or until their successors are elected or appointed.

The Company’s shareholders also ratified the appointment of PricewaterhouseCoopers LLP, Chartered Accountants, as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2022 at a remuneration to be set by the Directors (99.71% voted in favor).

The Company’s shareholders also approved a special resolution to approve and adopt an amendment to the Articles of the Company to alter the quorum requirements such that the presence, in person or by proxy, of two or more shareholders representing at least 331/3% of the outstanding shares entitled to be voted in order to constitute a quorum at any meeting of shareholders of the Company (98.54% voted in favor).

Detailed voting results for the meeting are available on SEDAR at www.sedar.com.

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Guest User 5/16/22 Guest User 5/16/22

Perpetua Resources Announces First Quarter 2022 Highlights

Perpetua Resources Corp. announced today that its unaudited condensed consolidated financial results for the period ended March 31, 2022 were filed. For details, please see the Company’s filings available on EDGAR and SEDAR.

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BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) announced today that its unaudited condensed consolidated financial results for the period ended March 31, 2022 were filed. For details, please see the Company’s filings available on EDGAR and SEDAR.

Perpetua Resources’ vision is to provide the U.S. with a domestic source of the critical mineral antimony, develop one of the largest and highest-grade open pit gold mines in the country and restore an abandoned brownfield site. Perpetua Resources is focused on advancing the permitting for the Stibnite Gold Project through the National Environmental Policy Act (“NEPA”) process.

First Quarter 2022 and Recent Highlights:

Zero lost time incidents and zero reportable environmental spills in the first quarter of 2022
Strengthened Board with appointment of Laura Dove who brings three decades of external affairs and stakeholder management experience
Promoted Jessica Largent to CFO and hired Chris Fogg as Investor Relations Manager
Launched Sustainability Roadmap outlining 13 goals that will guide Perpetua
Released the Company’s first annual report as a U.S. domestic issuer
Continued productive mediation discussions with the Nez Perce Tribe and an extension to the stay on the Clean Water Act matter was recently granted through July 31, 2022
Prepared contractor competitive bid package for the stream diversion clean up work expected to begin this summer under the Administrative Settlement and Order on Consent (“ASAOC”)
Welcomed Idaho’s Congressional Delegation submitting floor remarks and issuing a statement supporting critical mineral independence
Stibnite Advisory Council began review of the first data collected from the Independent Water Quality Monitoring program

“Perpetua Resources had a productive quarter as we continued to advance our project through the permitting process, further strengthened our team and launched our Sustainability Roadmap,” said Laurel Sayer, President and CEO of Perpetua Resources. “I look forward to the public seeing how our project improvements are designed to leave water quality and overall habitat in better shape than today while also responsibly producing critical minerals for our national interests. I remain confident that the additional evaluation of our project will address the concerns raised during the last public review and we are hopeful that it will allow the U.S. Forest Service to designate a preferred project alternative in the third quarter of 2022.”

Permitting Update:

On February 22, 2022, Perpetua announced the U.S. Forest Service (“USFS”) is expected to publish the Supplemental Draft Environmental Impact Statement (“SDEIS”) for public review early in the third quarter of 2022. In the first quarter of 2022, the USFS completed all of the 17 specialist reports for cooperating agency review and recently circulated the preliminary SDEIS for cooperating agency review. The comprehensive scientific analysis by the USFS and cooperating agencies, combined with the additional public review of the SDEIS, fortify the rigorous process mandated by NEPA.

The Company also advanced work on several ancillary permits in the first quarter of 2022, which are being progressed in parallel with the NEPA process. The Air Permit to Construct draft permit was released for public comment by the Idaho Department of Environmental Quality (“IDEQ”) in January 2022. The public comment period closed in March 2022 after a 30 day extension. In addition, the Idaho Pollution Discharge Elimination System (“IPDES”) application for industrial outfalls was submitted in January and deemed complete in early March. Perpetua’s water rights permit application is continuing through the administrative process after being submitted to the Idaho Department of Water Resources (“IDWR”) in 2021.

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Statements contained in this news release 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. Forward-Looking Information includes, but is not limited to, disclosure regarding possible events, next steps and courses of action including actions to be taken by government agencies and regulatory bodies; predictions regarding improvements to water quality and other environmental conditions at the site; reduction of the Project footprint and the anticipated benefits and other effects thereof; our and Ambri, Inc.’s ability to perform under the supply agreement, which agreement is subject to certain conditions, including identification of one or more refiners to transform our antimony concentrate into antimony metal, and mutual agreement on certain material terms, including volume and pricing; the Sustainability Roadmap and the goals outlined thereunder; and the Stibnite Gold Project and the success of such project. In certain cases, Forward-Looking Information can be identified by the use of words and phrases or variations of such words and phrases or statements such as "anticipate", “expect” “plan”, “likely”, “believe”, “intend”, “forecast”, “project”, “estimate”, "potential", "could", "may", "will", "would" or “should”. In preparing the Forward-Looking Information in this news release, Perpetua Resources has applied several material assumptions, including, but not limited to, assumptions that the current exploration, development, environmental and other objectives concerning the Stibnite Gold Project can be achieved and that its other corporate activities will proceed as expected; that the goals outlined in the Sustainability Roadmap are achievable; that we and Ambri will be able to agree on the terms of the Ambri agreement; and that general business and economic conditions will not change in a materially adverse manner and that permitting and operations costs will not materially increase; that the review process under the NEPA (including any joint review process involving the USFS, the State of Idaho and other agencies and regulatory bodies) as well as the public review process and SDEIS will proceed in a timely manner and as expected; and that all requisite information will be available in a timely manner. Forward-Looking Information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Perpetua Resources to be materially different from any future results, performance or achievements expressed or implied by the Forward-Looking Information. Such risks and other factors include, among others, changes in laws and regulations and changes in the application of standards pursuant to existing laws and regulations which may result in unforeseen results in the permitting process; uncertainty surrounding input to be received from regulators and community stakeholders; risks related to unforeseen delays in the review process including availability of personnel from the USFS, State of Idaho and other stated, federal and local agencies and regulatory bodies (including, but not limited to, future US government shutdowns); risks related to opposition to the Project; those factors discussed in Perpetua Resources' public filings with the U.S. Securities and Exchange Commission (the “SEC”) and its Canadian disclosure record. Although Perpetua Resources has attempted to identify important factors that could affect Perpetua Resources and may cause actual actions, events or results to differ materially from those described in Forward-Looking Information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. 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 these and other risks and uncertainties that may affect the Company’s business, see the “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” sections of the Company’s filings with the SEC, which are available at www.sec.gov and with the Canadian securities regulators, which are available at www.sedar.com. Except as required by law, Perpetua Resources does not assume any obligation to release publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Guest User 4/6/22 Guest User 4/6/22

Perpetua Resources launches Sustainability Roadmap

Perpetua Resources Corp. launched its Sustainability Roadmap today which outlines 13 goals to guide the Company as it advances the Stibnite Gold Project towards development. The Roadmap provides additional transparency and accountability measures for stakeholders, including community members and employees to track how Perpetua’s Environment, Social, and Governance commitments will be integrated as the Project advances.

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BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) launched its Sustainability Roadmap (“Roadmap”) today which outlines 13 goals to guide the Company as it advances the Stibnite Gold Project (“Project”) towards development. The Roadmap provides additional transparency and accountability measures for stakeholders, including community members and employees to track how Perpetua’s Environment, Social, and Governance (“ESG”) commitments will be integrated as the Project advances. Each goal within the Roadmap is informed by the United Nations’ Sustainable Development Goals (“UNSDGs”) to align Perpetua’s path with global objectives to promote a more sustainable future.

“Our actions over the last decade demonstrate our deep commitment to building a company where responsible redevelopment of the historical Stibnite Mining District can bring environmental, social and economic benefits” said Laurel Sayer, President and CEO of Perpetua Resources. “Launching Perpetua’s Sustainability Roadmap provides an additional level of transparency for all of our stakeholders as we advance the Stibnite Gold Project.”

Perpetua Resources and the Stibnite Gold Project are uniquely positioned to demonstrate an industry-leading sustainability approach. The Project is designed to restore an abandoned mine area through reprocessing and safely storing millions of tons of legacy mine tailings, restoring river habitat and fish migration access, and improving wetlands. The Project can also support the clean energy transition as the only domestically mined source of the critical mineral antimony, which is an essential component in Ambri’s long-duration storage batteries. Additionally, the Perpetua team has prioritized gender diversity with over 40% female employees and over 65% female senior leadership, led by CEO Laurel Sayer.

“Sustainability has always been at the forefront for Perpetua,” said Sayer. “We began by prioritizing community partnerships, designing for environmental uplift and recruiting a diverse team that represents some of the best in the industry. Now, we are advancing our efforts by defining a path for responsible mineral development here at home.”

The Company’s vision to responsibly restore an abandoned mine site, produce critical minerals required for U.S. security and clean energy, and bring benefits to surrounding communities formed the foundation for the Roadmap. The goals were developed in alignment with Perpetua’s ESG policy and broader sustainability strategy and support multiple UNSDGs.

Perpetua Resources’ Sustainability Roadmap goals are:

Improve and protect water quality. Perpetua Resources’ Plan of Restoration and Operation is designed to improve water quality at Stibnite to be better than it is today.
Conserve water. Conserving and reusing water are key to minimizing the impacts of the Stibnite Gold Project.
Limit our footprint. The Company has already reduced the footprint of its Project by 13% compared to the original design. Additionally, 51% of the footprint is on previously disturbed land. It is one of the only projects in North America that plans to reprocess previously mined material to restore a brownfields site.
Be a responsible link in the clean energy supply chain. Perpetua signed an agreement to supply a portion of the antimony produced at Stibnite to Ambri Inc, for the development of grid-scale storage batteries that can help decarbonize the U.S. energy grid.
Work with communities and regulators to refine environmental outcomes of the Stibnite Gold Project. Public and agency feedback has been essential in the design of the Project. Perpetua will use this feedback to identify ways to improve the social and environmental outcomes of our project.
Nurture connections with tribal communities and identify opportunities to collaborate. Perpetua is committed to continuing to work with tribal leadership, staff and their membership to ensure the Project honors and protects tribal treaty rights.
Foster an open and transparent relationship with local communities. The Stibnite Advisory Council, which was formed by the 2018 Community Agreement, is a vehicle for the Company to connect directly with the communities closest to our site throughout the life of the Project.
Create economic partnerships that sustain beyond the life of the mine. Perpetua Resources entered into a profit-sharing agreement to fund the Stibnite Foundation. This locally-run charitable endowment is designed to have a lasting impact by supporting local social, environmental and health programs.
Develop a diverse and inclusive team. The Company is committed to recruiting, building and retaining a diverse team.
Adopt a long-term Environment, Social and Governance reporting framework. Perpetua Resources will strive to align its ESG disclosure with the SASB reporting framework beginning with its 2021 sustainability report to be released later this year.
Disclose and report current and future GHG emissions. Perpetua plans to report annual greenhouse gas (GHG) emissions through a certified third-party to ensure transparency in emissions reporting.
Set science-based GHG target. Once a Project design is approved by regulators, the Company will establish an anticipated baseline for GHG emissions and intends to develop targets based on feasible offsets, mitigations and reductions.
Protect our people and our communities. Perpetua will continue to implement best practices and set high safety and training standards to keep our people and our communities safe.

Perpetua Resources has published annual sustainability reports since 2013, detailing the Company’s actions in communities and for the environment and will launch its ninth report later this year. These reports can be viewed on Perpetua’s website at https://perpetuaresources.com/sustainability/. Perpetua Resources expects to set more specific and measurable ESG targets based on the final project design and anticipated outcomes once all permits for the Stibnite Gold Project have been issued.

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Statements contained in this news release 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. Forward-Looking Information includes, but is not limited to, disclosure regarding possible events, next steps and courses of action including actions to be taken by government agencies and regulatory bodies; predictions regarding improvements to water quality and other environmental conditions at the site; reduction of the Project footprint and the anticipated benefits and other effects thereof; our and Ambri, Inc.’s ability to perform under the supply agreement, which agreement is subject to certain conditions, including identification of one or more refiners to transform our antimony concentrate into antimony metal, and mutual agreement on certain material terms, including volume and pricing; the Sustainability Roadmap and the goals outlined thereunder; and the Stibnite Gold Project and the success of such project. In certain cases, Forward-Looking Information can be identified by the use of words and phrases or variations of such words and phrases or statements such as "anticipate", “expect” “plan”, “likely”, “believe”, “intend”, “forecast”, “project”, “estimate”, "potential", "could", "may", "will", "would" or “should”. In preparing the Forward-Looking Information in this news release, Perpetua Resources has applied several material assumptions, including, but not limited to, assumptions that the current exploration, development, environmental and other objectives concerning the Stibnite Gold Project can be achieved and that its other corporate activities will proceed as expected; that the goals outlined in the Sustainability Roadmap are achievable; that we and Ambri will be able to agree on the terms of the Ambri agreement; and that general business and economic conditions will not change in a materially adverse manner and that permitting and operations costs will not materially increase. Forward-Looking Information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Perpetua Resources to be materially different from any future results, performance or achievements expressed or implied by the Forward-Looking Information. Such risks and other factors include, among others, uncertainty surrounding input to be received from regulators and community stakeholders; those factors discussed in Perpetua Resources' public filings with the U.S. Securities and Exchange Commission (the “SEC”) and its Canadian disclosure record. Although Perpetua Resources has attempted to identify important factors that could affect Perpetua Resources and may cause actual actions, events or results to differ materially from those described in Forward-Looking Information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. 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 these and other risks and uncertainties that may affect the Company’s business, see the “Risk Factors” section of the Company’s filings with the SEC, which are available at www.sec.gov and with the Canadian securities regulators, which are available at www.sedar.com. Except as required by law, Perpetua Resources does not assume any obligation to release publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Guest User 4/4/22 Guest User 4/4/22

Perpetua Resources Welcomes Use of Defense Production Act for Battery Metals

Perpetua Resources Corp. applauds that U.S. President Biden has deemed domestic mining of critical minerals for large-capacity storage batteries essential to America’s national security and instructed the U.S. Department of Defense to secure the supply of battery metals through the authorities granted by the Defense Production Act (“DPA”). Perpetua Resources’ proposed gold and antimony project in Idaho, the Stibnite Gold Project (“Project”), would provide the only domestically mined source of the critical mineral antimony which is essential for liquid metal, large-capacity battery technology.

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U.S. President Biden invokes the Defense Production Act to secure domestic critical minerals for large-capacity storage batteries.

Through partnership agreement with Ambri, antimony from Perpetua Resources is poised to power American-based grid-scale energy storage battery.

Perpetua Resources’ Stibnite Gold Project would provide the only domestically mined source of the critical mineral antimony; currently China, Russia and Tajikistan control 90% of the global antimony market.

BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) applauds that U.S. President Biden has deemed domestic mining of critical minerals for large-capacity storage batteries essential to America’s national security and instructed the U.S. Department of Defense to secure the supply of battery metals through the authorities granted by the Defense Production Act (“DPA”). Perpetua Resources’ proposed gold and antimony project in Idaho, the Stibnite Gold Project (“Project”), would provide the only domestically mined source of the critical mineral antimony which is essential for liquid metal, large-capacity battery technology.

“President Biden’s actions underscore the need to swiftly and significantly increase domestic production of antimony and other critical minerals essential to securing our clean energy future,” said Laurel Sayer, President and CEO of Perpetua Resources. “Prioritizing responsible mineral development is a clear recognition that serious action is needed to address the vulnerabilities associated with energy and mineral dependence. A resilient and diversified energy grid will require the support of a wide variety of battery technologies and associated minerals. Antimony based battery technologies offer an alternative in the market and their inclusion in the mix of energy storage options will help limit overreliance on any one critical mineral."

In 2021, Perpetua entered into a long-term partnership agreement with Ambri, an American company developing an antimony-based liquid metal battery which is designed to provide affordable and reliable grid-scale storage to facilitate the decarbonization of energy grids. Under the agreement, antimony from the Stibnite Gold Project is expected to power over 13 Gigawatt hours of energy storage which is equivalent to over 8 times the total additions to the U.S. energy storage market in 2020 and enough to power approximately 1 million American homes with solar power on a daily basis over the anticipated 20+ year lifespan of the batteries. This partnership highlights the role modern mining can play in addressing some of the world’s climate change challenges and directly links the restoration of the historical Stibnite mining district to achieving climate change solutions.

Presidential Determination No 2022-11 comes after weeks of mounting pressure from bipartisan congressional leaders calling for action to end foreign reliance on critical minerals. In a joint letter to the President, Senators Murkowski, Manchin, Risch and Cassidy urged the Administration to use the Defense Production Act to develop domestic critical mineral production to support national security and energy independence.

“Made in America starts with mined in America,” said Sayer. “We appreciate the growing urgency and bipartisan recognition that a safe, reliable, and responsible supply chain must begin right here at home and the Stibnite Gold Project is prepared to be part of the solution by providing the only domestically mined source of antimony for both energy storage products and national security platforms.”

Citing dependance on foreign sources and an inability to meet the growing demands of a clean energy economy, the Determination orders the Secretary of Defense to “create, maintain, protect, expand or restore sustainable and responsible production” of critical and strategic minerals needed for large-capacity batteries among other products. The Determination also directs the Secretary of Defense to consult with the Secretary of Agriculture, the Secretary of the Interior and the Secretary of Energy.

The Project is currently progressing into the later stages of the permitting process, and the Company anticipates the circulation of a preliminary Supplemental Draft Environmental Impact Statement (“SDEIS”) for cooperating agency review in the second quarter of 2022, with public release shortly thereafter in the third quarter of 2022.

Critical Project for the American Future

The Stibnite Gold Project in central Idaho is designed to restore environmental conditions at a historical mine site while responsibly developing one of the highest-grade, open pit gold resources in the United States and becoming the only domestically mined source of the critical mineral antimony.

With key applications in energy and defense, securing a domestic supply of antimony is more important than ever. Antimony is a key component for grid storage battery technology and Perpetua is uniquely positioned to play a vital role in the decarbonization of the world through its supply agreement with Ambri. Also a vital component in defense applications, antimony was listed by the Department of Defense (“DOD”) as a shortfall material in the 100-Day Supply Chain Review Report (June 2021) and in DOD’s most recent National Defense Stockpile and Annual Operations and Planning Report (February 2022).

The U.S. Geological Survey recently reported that foreign reliance is growing, with China, Russia and Tajikistan controlling 90% of the world supply of antimony and no domestically mined sources (USGS, 2022 Mineral Commodity Summary).

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Statements contained in this news release 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. Forward-Looking Information includes, but is not limited to, disclosure regarding possible events, next steps and courses of action including actions to be taken by the USFS, the State of Idaho, the U.S. Federal government and other government agencies and regulatory bodies; plans with respect to the Stibnite Gold Project and the success of such project; and our and Ambri, Inc.’s ability to perform under the supply agreement, which agreement is subject to certain conditions, including identification of one or more refiners to transform our antimony concentrate into antimony metal, and mutual agreement on certain material terms, including volume and pricing. In certain cases, Forward-Looking Information can be identified by the use of words and phrases or variations of such words and phrases or statements such as "anticipate", “expect” “plan”, “likely”, “believe”, “intend”, “forecast”, “project”, “estimate”, "potential", "could", "may", "will", "would" or “should”. In preparing the Forward-Looking Information in this news release, Perpetua Resources has applied several material assumptions, including, but not limited to, assumptions that the current exploration, development, environmental and other objectives concerning the Stibnite Gold Project can be achieved and that its other corporate activities will proceed as expected; that we and Ambri will be able to agree on the terms of the Ambri agreement; that we will find a refinery to transform our antimony concentrate into antimony metal; that Ambri will successfully develop, manufacture and market its proposed batteries; that general business and economic conditions will not change in a materially adverse manner and that permitting and operations costs will not materially increase. Forward-Looking Information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Perpetua Resources to be materially different from any future results, performance or achievements expressed or implied by the Forward-Looking Information. Such risks and other factors include, among others, changes in laws and regulations and changes in the application of standards pursuant to existing laws and regulations which may result in unforeseen results in the permitting process; uncertainty surrounding input to be received from regulators and community stakeholders; risks related to unforeseen delays in the review process; risks related to opposition to the Project; risks related to increased or unexpected costs in operations or the permitting process; risks that estimates used in budgeting and financial statements may prove to be incorrect; risks related to the outcome of litigation and potential for delay of the Project, as well as those factors discussed in Perpetua Resources' public filings with the U.S. Securities and Exchange Commission (the “SEC”) and its Canadian disclosure record. Although Perpetua Resources has attempted to identify important factors that could affect Perpetua Resources and may cause actual actions, events or results to differ materially from those described in Forward-Looking Information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. 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 these and other risks and uncertainties that may affect the Company’s business, see the “Risk Factors” section of the Company’s filings with the SEC, which are available at www.sec.gov and with the Canadian securities regulators, which are available at www.sedar.com. Except as required by law, Perpetua Resources does not assume any obligation to release publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Guest User 3/31/22 Guest User 3/31/22

Perpetua Resources Strengthens Board with Appointment of Laura Dove

Perpetua Resources Corp. announced the appointment of Laura Dove to the Company’s Board of Directors effective immediately.

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Extensive public affairs and government relations expertise further enhances the Board’s broad experience and gender diversity.

Appointment further strengthens Perpetua’s ability to support America’s critical mineral supply chains.

BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) announced the appointment of Laura Dove to the Company’s Board of Directors effective immediately.

Laura Dove brings three decades of external affairs and stakeholder management experience to Perpetua. Ms. Dove most recently served as Senior Director of the Ford Motor Company where she led federal government relations, focused on the car maker’s move to electrification and helping Ford promote a robust critical minerals supply chain policy. She also served as Chair of the Executive Committee of the Alliance for Automotive Innovation and as the Washington representative for the Business Roundtable, U.S. Chamber of Commerce and National Association of Manufacturers. Prior to her role with Ford, Ms. Dove served as Secretary for the Majority of the U.S. Senate for seven years. Ms. Dove holds a Master’s degree in English from the University of Virginia and a Bachelor of Arts degree in English and Music from the University of North Carolina, Chapel Hill.

“I am excited to welcome Laura to Perpetua’s Board at a time when our nation’s critical mineral supply chain is particularly at risk,” said Marcelo Kim, Chairman of Perpetua Resources. “Laura brings unique perspectives and relevant experience which will further help Perpetua establish itself as having one of America’s most important critical mineral projects and a world class gold project. These complementary economic drivers for our project reinforce one another, which I believe makes the project a more durable resource for U.S. economic and national security.”

Perpetua’s vision is to develop one of the highest-grade open pit gold mines in the U.S., provide the country with a critical mineral required for national security and clean energy while restoring an abandoned mine site. As a publicly traded company, Perpetua Resources is dedicated the highest corporate governance practices. The Company is also committed to building and maintaining a culture of diversity, equity and inclusion from the top down, beginning with its Board of Directors. With the appointment of Ms. Dove, Perpetua’s Board has over 20% female representation and the Perpetua team has achieved over 40% gender diversity with over 65% female senior leadership.

“From the beginning, Perpetua has been focused on being part of the solution,” said Ms. Dove. “I am thrilled to be part of a modern mining team that prioritizes community partnerships and has designed a project intended to leave the environment better than when they found it. Perpetua is uniquely positioned to play a crucial role in mitigating our nation’s critical mineral supply chain risks and I am excited to join the Board.”

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us

Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Guest User 3/25/22 Guest User 3/25/22

Perpetua Resources Promotes Jessica Largent to Chief Financial Officer

Perpetua Resources Corp. announced today that Jessica Largent will be appointed Chief Financial Officer effective April 1, 2022. Ms. Largent will replace Chris Foster who has served as Chief Financial Officer on a contract basis since March 2021.

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Perpetua team further strengthened by hiring of Chris Fogg

BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) announced today that Jessica Largent will be appointed Chief Financial Officer effective April 1, 2022. Ms. Largent will replace Chris Foster who has served as Chief Financial Officer on a contract basis since March 2021.

Ms. Largent joined the Perpetua team in February 2021 as Vice President, Finance and Investor Relations and has been instrumental in leading the finance team through a number of recent milestones including listing the Company’s shares on the NASDAQ stock exchange and successfully completing a $57.5 million public equity offering in August 2021 to ensure Perpetua is well capitalized as it advances the Stibnite Gold Project through the final stages of the permitting process. Under Ms. Largent’s leadership, Perpetua entered into a supply agreement to provide a portion of antimony production from the Stibnite Gold Project to Ambri Inc., establishing the foundation to help facilitate the decarbonization of energy grids in the U.S. and around the world.

“I am excited about Jessica’s promotion to Chief Financial Officer,” said Laurel Sayer, President and Chief Executive Officer of Perpetua Resources. “Jessica has a wealth of industry knowledge and her experience and proven success will continue to strengthen our diverse leadership team. She will be a valuable contributor as we advance Perpetua’s vision to redevelop and restore an abandoned mine site while providing critical minerals our nation needs.”

Ms. Largent held finance leadership roles at Newmont, Turquoise Hill Resources and Rio Tinto prior to joining Perpetua Resources. She has more than 15 years of mining industry experience in financial reporting, accounting, strategic planning and investor relations.

Perpetua Resources is also pleased to welcome Chris Fogg as Manager of Investor Relations. Mr. Fogg joined the Company March 1, 2022 and will lead Perpetua’s investor relations function following the promotion of Ms. Largent to Chief Financial Officer. Chris will be responsible alongside Ms. Largent for the investor relations strategy to ensure Perpetua’s investment thesis is well understood by the market. Mr. Fogg brings over seven years of gold industry experience in investor relations, capital markets and mergers & acquisitions, and was most recently at Newmont.

For further information about Perpetua Resources Corp., please contact:

Chris Fogg

Investor Relations Manager

chris.fogg@perpetuacorp.us

Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us
Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Natalie Podgorski 3/11/22 Natalie Podgorski 3/11/22

Perpetua Resources Supports Congressional Call to Action on U.S. Critical Mineral Production

Perpetua Resources strongly supports the Idaho Congressional Delegation’s united call for domestic critical mineral production including the timely completion of permitting reviews necessary for development of Idaho’s critical mineral resources which will bolster our Nation’s economic independence and security amid geopolitical instability and unprecedented supply chain disruptions.

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Idaho Congressional Delegation calls for timely permitting for critical mineral projects in response to Russia’s invasion of Ukraine and America’s overreliance on foreign adversaries.

More than 75% of antimony production controlled by China and Russia.

Stibnite Gold Project is designed to restore an abandoned mine site while responsibly producing gold and the only domestically mined source of antimony, essential for clean energy and defense materials.

BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) strongly supports the Idaho Congressional Delegation’s united call for domestic critical mineral production including the timely completion of permitting reviews necessary for development of Idaho’s critical mineral resources which will bolster our Nation’s economic independence and security amid geopolitical instability and unprecedented supply chain disruptions.

Project Overview with Perpetua Resources CEO, Laurel Sayer

In floor remarks delivered this week, Senators Mike Crapo and Jim Risch along with Congressmen Mike Simpson and Russ Fulcher resolutely called for action on critical mineral supply chains and pointed to the need to advance proposed projects that would tap into Idaho’s vast antimony and cobalt resources. Perpetua Resources’ Stibnite Gold Project has one of the world’s largest resources of antimony not controlled by China or Russia and could provide the only domestically mined source of a critical mineral deemed essential for clean energy battery storage technology and the Nation’s defense needs.

“While we need to take strong actions on Russia, the reality is that we source many of our raw minerals from them. As we tighten our grip on their financial system and exports, we must prioritize domestic sourcing and reduce our reliance on countries like Russia and China,” said the Idaho delegation. “The time is now for this Administration to take real action to prioritize a strong domestic supply chain for these essential minerals. We do not want to compromise any of our environmental or other standards. We are simply calling on the Administration to prioritize the timely completion of the permits for currently proposed projects so we may take back control of a fundamental piece of many of our essential industries: critical minerals production.”

“The need for responsible domestic mining to secure our economic, defense, and energy future is not lost on the people of Idaho or the American people,” said Laurel Sayer, President & CEO of Perpetua Resources. “Perpetua is fortunate to have a congressional delegation that recognizes a safe, reliable, and responsible supply chain starts right here at home and supports the growing bipartisan unity to encourage domestic mineral production. Our vision at Perpetua Resources has always been to restore an abandoned mine site while producing the critical resources our Country needs for a more secure and sustainable future. Now, more than ever, turning this vision into reality is vital for our Nation’s success. As we enter the later stages of permitting, we are confident that the robust review process has created improved project outcomes while also prioritizing community and stakeholder transparency.”

Critical Project for the American Future

The Stibnite Gold Project in central Idaho is designed to restore environmental conditions at a legacy mine site while responsibly developing one of the highest-grade, open pit gold resources in the United States and becoming the only domestically mined source of the critical mineral antimony.

With key applications in energy and defense technology, securing a domestic supply of antimony is more important than ever. Antimony is a key component for grid storage battery technology and Perpetua is uniquely positioned to play a vital role in the decarbonization of the world through its supply agreement with Ambri. Vital to defense materials, antimony was listed by the Department of Defense as a shortfall material in the 100-Day Supply Chain Review Report (June 2021).

For further information about Perpetua Resources Corp., please contact:

Jessica Largent

Vice President Investor Relations and Finance

jessica.largent@perpetuacorp.us Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us
Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Perpetua Resources Corp., through its wholly owned subsidiaries, is focused on the exploration, site restoration and redevelopment of gold-antimony-silver deposits in the Stibnite-Yellow Pine district of central Idaho that are encompassed by the Stibnite Gold Project. The 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. Further advancing Perpetua Resources’ ESG and sustainable mining goals, the Project will be powered by the lowest carbon emissions grid in the nation and a portion of the antimony produced from the Project will be supplied to Ambri, a US-based company commercializing a low-cost liquid metal battery essential for the low-carbon energy transition. In addition to the company’s commitments to transparency, accountability, environmental stewardship, safety and community engagement, Perpetua Resources adopted formal ESG commitments which can be found here.

Forward-Looking Information

Statements contained in this news release 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. Forward-Looking Information includes, but is not limited to, disclosure regarding possible events, next steps and courses of action including actions to be taken by the USFS, the State of Idaho, the U.S. Federal government and other government agencies and regulatory bodies; plans with respect to the Stibnite Gold Project and the success of such project; and our and Ambri, Inc.’s ability to perform under the supply agreement, which agreement is subject to certain conditions, including identification of one or more refiners to transform our antimony concentrate into antimony metal, and mutual agreement on certain material terms, including volume and pricing. In certain cases, Forward-Looking Information can be identified by the use of words and phrases or variations of such words and phrases or statements such as "anticipate", “expect” “plan”, “likely”, “believe”, “intend”, “forecast”, “project”, “estimate”, "potential", "could", "may", "will", "would" or “should”. In preparing the Forward-Looking Information in this news release, Perpetua Resources has applied several material assumptions, including, but not limited to, assumptions that the current exploration, development, environmental and other objectives concerning the Stibnite Gold Project can be achieved and that its other corporate activities will proceed as expected; that general business and economic conditions will not change in a materially adverse manner and that permitting and operations costs will not materially increase. Forward-Looking Information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Perpetua Resources to be materially different from any future results, performance or achievements expressed or implied by the Forward-Looking Information. Such risks and other factors include, among others, changes in laws and regulations and changes in the application of standards pursuant to existing laws and regulations which may result in unforeseen results in the permitting process; uncertainty surrounding input to be received from regulators and community stakeholders; risks related to unforeseen delays in the review process; risks related to opposition to the Project; risks related to increased or unexpected costs in operations or the permitting process; risks that estimates used in budgeting and financial statements may prove to be incorrect; risks related to the outcome of litigation and potential for delay of the Project, as well as those factors discussed in Perpetua Resources' public filings with the U.S. Securities and Exchange Commission (the “SEC”) and its [Canadian disclosure record]. Although Perpetua Resources has attempted to identify important factors that could affect Perpetua Resources and may cause actual actions, events or results to differ materially from those described in Forward-Looking Information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. 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 these and other risks and uncertainties that may affect the Company’s business, see the “Risk Factors” section of the Company’s filings with the SEC, which are available at www.sec.gov and with the Canadian securities regulators, which are available at www.sedar.com. Except as required by law, Perpetua Resources does not assume any obligation to release publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Natalie Podgorski 2/22/22 Natalie Podgorski 2/22/22

Perpetua Resources Achieves Critical Milestones As Permitting Continues to Progress

Perpetua Resources announced today that the Company expects the United States Forest Service (“USFS”) to publish a Supplemental Draft Environmental Impact Statement for public review and comment in early Q3 2022.

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Supplemental Draft Environmental Impact Statement publication anticipated in early Q3 2022.

Amidst heightened geopolitical tensions, new US Government report indicates U.S. foreign reliance on China and Russia for critical mineral antimony continues to grow.

The Stibnite Gold Project is designed to responsibly source gold and the only domestically mined source of antimony, essential for clean energy and defense supply chains.

BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or “Perpetua” or the “Company”) announced today that the Company expects the United States Forest Service (“USFS”) to publish a Supplemental Draft Environmental Impact Statement (“SDEIS” or “Supplemental DEIS”) for public review and comment in early Q3 2022.

Supplemental DEIS Progress

During the last 18 months, the USFS and cooperating agencies have performed an extensive review of Perpetua’s refined proposed action. In this time, the USFS has made substantial progress in analyzing the project refinements and preparing chapters of the preliminary SDEIS for interagency review. Perpetua anticipates the preliminary SDEIS will be circulated for cooperating agency review in Q2 2022 with a public release of the SDEIS to follow shortly thereafter.

In support of the USFS’s preparation of the Supplemental DEIS, Perpetua has responded to more than 850 comments and numerous requests for additional information, including additional water modeling, sensitivity analyses, fisheries modeling, and habitat analysis. The USFS has also nearly completed all of the 17 specialist reports for cooperating agency review. Perpetua is confident that the additional evaluation contained within the SDEIS will directly address issues raised during the public review of the 2020 Draft Environmental Impact Statement (“DEIS”) and believes the additional analysis and detailed review will lead to the USFS designating a preferred alternative in the SDEIS.

“For over a year, the Perpetua team has worked diligently with regulators to incorporate public feedback into our proposed project design,” said Laurel Sayer, President and CEO of Perpetua Resources. “We are eager to show how our improvements are designed to leave water quality and overall habitat in this historic mining district in better shape than they are in today while also responsibly producing the mineral and metals critical for our national interests. We anticipate the hard work and commitment to a thorough and transparent process will pay dividends as our project advances.”

The comprehensive scientific analysis by the USFS and cooperating agencies, combined with the additional public review of the SDEIS, fortify the rigorous process mandated by the National Environmental Policy Act ("NEPA"). The USFS is expected to provide a formal schedule update later this year and Pepertua remains committed to supporting a thorough and efficient NEPA process by the USFS.

Critical Project for the American Future

As a strategic defense mineral and a key component for grid storage battery technology, securing a domestic supply of antimony is more important than ever. The U.S. Geological Survey recently reported that foreign reliance is growing, with China, Russia and Tajikistan controlling 90% of the world supply of antimony and no domestically mined sources (USGS, 2022 Mineral Commodity Summary).

“Responsible mining is the first link in a more resilient and secure supply chain,” said Laurel Sayer, President and CEO of Perpetua Resources. “We are taking actions to ensure the environmental and social outcomes of the Stibnite Gold Project meet the demand for a responsible source of antimony to secure our nation’s defense and energy supply chains.”

For further information about Perpetua Resources Corp., please contact:

Jessica Largent

Vice President Investor Relations and Finance

jessica.largent@perpetuacorp.us Info@perpetuacorp.us

Mckinsey Lyon

Vice President External Affairs

media@perpetua.us
Website: www.perpetuaresources.com

About Perpetua Resources and the Stibnite Gold Project

Perpetua Resources Corp., through its wholly owned subsidiaries, is focused on the exploration, site restoration and redevelopment of gold-antimony-silver deposits in the Stibnite-Yellow Pine district of central Idaho that are encompassed by the Stibnite Gold Project. The 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. Further advancing Perpetua Resources’ ESG and sustainable mining goals, the Project will be powered by the lowest carbon emissions grid in the nation and a portion of the antimony produced from the Project will be supplied to Ambri, a US-based company commercializing a low-cost liquid metal battery essential for the low-carbon energy transition. In addition to the company’s commitments to transparency, accountability, environmental stewardship, safety and community engagement, Perpetua Resources adopted formal ESG commitments which can be found here.

Forward-Looking Information

Statements contained in this news release 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. Forward-Looking Information includes, but is not limited to, disclosure regarding possible events, next steps and courses of action including actions to be taken by the USFS, the State of Idaho and other government agencies and regulatory bodies; plans with respect to the issuance of an SDEIS; the consideration of difference access routes; the anticipated timing for release of the SDEIS, FEIS, draft ROD and final ROD; predictions regarding improvements to water quality and other environmental conditions at the site; reduction of the Project footprint and the anticipated benefits and other effects thereof; disclosure regarding our funding capacity and requirements for additional capital; our and Ambri, Inc.’s ability to perform under the supply agreement, which agreement is subject to certain conditions, including identification of one or more refiners to transform our antimony concentrate into antimony metal, and mutual agreement on certain material terms, including volume and pricing. In certain cases, Forward-Looking Information can be identified by the use of words and phrases or variations of such words and phrases or statements such as "anticipate", “expect” “plan”, “likely”, “believe”, “intend”, “forecast”, “project”, “estimate”, "potential", "could", "may", "will", "would" or “should”. In preparing the Forward-Looking Information in this news release, Perpetua Resources has applied several material assumptions, including, but not limited to, assumptions that the current exploration, development, environmental and other objectives concerning the Stibnite Gold Project can be achieved and that its other corporate activities will proceed as expected; that general business and economic conditions will not change in a materially adverse manner and that permitting and operations costs will not materially increase; that the review process under the NEPA (including any joint review process involving the USFS, the State of Idaho and other agencies and regulatory bodies) as well as the public review process and SDEIS will proceed in a timely manner and as expected; and that all requisite information will be available in a timely manner. Forward-Looking Information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Perpetua Resources to be materially different from any future results, performance or achievements expressed or implied by the Forward-Looking Information. Forward-Looking Information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Perpetua Resources to be materially different from any future results, performance or achievements expressed or implied by the Forward-Looking Information. Such risks and other factors include, among others, changes in laws and regulations and changes in the application of standards pursuant to existing laws and regulations which may result in unforeseen results in the permitting process; uncertainty surrounding input to be received from regulators and community stakeholders; risks related to dependence on key personnel; risks related to unforeseen delays in the review process including availability of personnel from the USFS, State of Idaho and other stated, federal and local agencies and regulatory bodies (including, but not limited to, future US government shutdowns); risks related to opposition to the Project; risks related to increased or unexpected costs in operations or the permitting process; risks that estimates used in budgeting and financial statements may prove to be incorrect; risks related to the outcome of litigation and potential for delay of the Project, as well as those factors discussed in Perpetua Resources' public disclosure record. Although Perpetua Resources has attempted to identify important factors that could affect Perpetua Resources and may cause actual actions, events or results to differ materially from those described in Forward-Looking Information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. 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 these and other risks and uncertainties that may affect the Company’s business, see the “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” sections of the Company’s filings with the SEC, are available at www.sec.gov and with the Canadian securities regulators, which are available at www.sedar.com. Except as required by law, Perpetua Resources does not assume any obligation to release publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Natalie Podgorski 11/15/21 Natalie Podgorski 11/15/21

Perpetua Resources Announces Appointment of PricewaterhouseCoopers as Auditors

Perpetua announced it has changed its auditor from Deloitte LLP to PricewaterhouseCoopers LLP, following a thorough and competitive review process.

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BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or the “Company”) today announced that, following a thorough and competitive review process, it has changed its auditor from Deloitte LLP (the “Former Auditor”) to PricewaterhouseCoopers LLP (the “Successor Auditor”). The Successor Auditor will conduct a US GAAP audit of the Company’s annual financial statements for the 2021 financial year in connection with Perpetua transitioning to a U.S. Domestic Issuer. Copies of the Notice of Change of Auditor and letters from the Former Auditor and Successor Auditor have been filed on SEDAR.

"We are pleased to announce PricewaterhouseCoopers LLP as a reputable partner as we transition to a U.S. Domestic Issuer and continue advancing our strategy to focus the Company’s business in the U.S. We would like to thank the Canadian Deloitte team for their expertise and guidance over the last ten years," said Laurel Sayer, President and CEO of Perpetua Resources.

The Company confirms there have been no modified opinions in the Former Auditor's reports for the two most recently completed financial years or for any period subsequent to the most recently completed period for which an audit report was issued and preceding November 15, 2021; the Company's Board of Directors and Audit Committee each approved the resignation of the Former Auditor and the appointment of the Successor Auditor in place of the Former Auditor; there were no reportable events (as defined in National Instrument 51-102, Continuous Disclosure Obligations) in connection with each of the Former Auditor's audits of the Company; and the Notice of Change of Auditor was approved by the Company's Board of Directors.

Stoltz 9/1/21 Stoltz 9/1/21

PERPETUA RESOURCES TO PRESENT AT UPCOMING CONFERENCES

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BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or the “Company”) announced today that Laurel Sayer, President and CEO, will present at upcoming industry conferences. Perpetua Resources is focused on the exploration, site restoration and redevelopment of gold-antimony-silver deposits in the Stibnite-Yellow Pine district of central Idaho. Perpetua’s vision is to develop and operate one of the highest-grade open pit gold mines in the U.S.; provide the country with a critical mineral to power batteries that enable the low-carbon energy transition; and restore an abandoned brownfield site.

Perpetua is participating in the following upcoming conferences:

Precious Metals Summit Beaver Creek to be held in Beaver Creek, Colorado from September 8th to 11th, 2021. Perpetua Resources is scheduled to present on Thursday, September 9th, 2021 at 9:30 am MDT.
Gold Forum Americas Explorer and Developers Forum to be held in Colorado Springs, Colorado from September 12th to 15th, 2021. Perpetua Resources is scheduled to present on Monday, September 13th, 2021 at 11:40 am MDT.
H.C. Wainwright 23rd Annual Global Investment Conference to be held virtually from September 13th to 15th, 2021

The presentations will be available on the “Webinars” section of the Company’s website here.

About Perpetua Resources and the Stibnite Gold Project

Forward-Looking Information

Statements contained in this news release 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. Forward-Looking Information includes, but is not limited to, disclosure regarding possible events, next steps and courses of action including the plans to supply a portion of the expected antimony production from the Stibnite Gold Project to Ambri; and the anticipated benefits of the foregoing. In certain cases, Forward-Looking Information can be identified by the use of words and phrases or variations of such words and phrases or statements such as “anticipates”, “complete”, “expected”, “ensure”, and “potential”, in relation to certain actions, events or results “could”, “may”, “will”, “would”, be achieved. In preparing the Forward-Looking Information in this news release, Perpetua Resources has applied several material assumptions, including, but not limited to, assumptions that the current objectives concerning the Stibnite Gold Project can be achieved and that its other corporate activities will proceed as expected; that the parties will agree upon mutually acceptable volume and pricing terms; and that general business and economic conditions will not change in a materially adverse manner. Forward-Looking Information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Perpetua Resources to be materially different from any future results, performance or achievements expressed or implied by the Forward-Looking Information. Such risks and other factors include, among others, changes in laws and regulations and changes in the application of standards pursuant to existing laws and regulations which may result in unforeseen results in the permitting process; risks related to dependence on key personnel; the risk that the parties may not come to final agreement upon volume, pricing and/or other terms or conditions necessary in order to complete the supply of antimony produced from the Stibnite Gold Project to Ambri on mutually acceptable terms; risks of either party being unable to fulfill the terms of the Agreement by virtue of delays and/or other hindrances to reaching production on the part of Perpetua Resources and/or commercialization on the part of Ambri, as applicable; risks related to opposition to the Project; risks related to the outcome of litigation and potential for delay of the Project, as well as those factors discussed in Perpetua Resources’ public disclosure record. Although Perpetua Resources has attempted to identify important factors that could affect Perpetua Resources and may cause actual actions, events or results to differ materially from those described in Forward-Looking Information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. 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. Except as required by law, Perpetua Resources does not assume any obligation to release publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Stoltz 8/26/21 Stoltz 8/26/21

PERPETUA RESOURCES ANNOUNCES FULL EXERCISE OF OVER-ALLOTMENT OPTION

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BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or the “Company”) is pleased to announce that, in connection with the Company’s previously announced underwritten marketed public offering of common shares (the “Offering”), B. Riley Securities, Inc. and Cantor Fitzgerald Canada Corporation (together, the “Underwriters”) have exercised in full the over-allotment option (the “Over-Allotment Option”) to purchase an additional 1,428,572 common shares at a price of US$5.25 per common share. The sale of these additional common shares was completed today for aggregate gross proceeds to the Company of approximately US$7.5 million, which brings the aggregate gross proceeds of the Offering to approximately US$57.5 million.

The Company expects to use the net proceeds of the Offering and the exercise of the Over-Allotment Option to continue permitting, early restoration and field operations, engineering and design at the Stibnite Gold Project and for general corporate purposes.

No securities regulatory authority has either approved or disapproved the contents of this press release. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the common shares in any province, state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such province, state or jurisdiction.

Cautionary Statement Regarding Forward-Looking STATEMENTS OR INFORMATION

Certain statements contained in this news release constitute forward-looking statements or “forward-looking information” within the meaning of applicable Canadian and United States securities laws (“forward-looking statements”). Often, but not always, forward-looking statements can be identified by the use of words such as “plans”, “expects” or “does not expect”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates” or “does not anticipate”, or “believes”, or describes a “goal”, or variation of such words and phrases or state that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved. Forward-looking statements in this news release include, but are not limited to, information and statements regarding plans to supply a portion of the expected antimony production from the Stibnite Gold Project to Ambri Inc. and the anticipated use of proceeds from the Offering.

Forward-looking statements are neither historical facts nor assurances of future performance, instead they reflect the Company’s beliefs and assumptions based on information available at the time the statements were made. Actual results or events may differ from those predicted in these forward-looking statements. The Company does not undertake any obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise. All of the Company’s forward-looking statements are qualified by the assumptions that are stated or inherent in such forward-looking statements, including the assumptions listed below. Although the Company believes that these assumptions are reasonable, this list is not exhaustive of factors that may affect any of the forward-looking statements. The key assumptions that have been made in connection with the forward-looking statements include the following: the impact of COVID-19 on the business of the Company; the regulatory regime governing the business of the Company; the operations of the Company; the growth of the Company’s business; the integration of technology; and the impact of litigation on the Company.

Forward-looking statements involve known and unknown risks, future events, conditions, uncertainties and other factors that may cause actual results, performances or achievements to be materially different from any future results, predictions, projections, forecasts, performances or achievements expressed or implied by the forward-looking statements. Such factors include, among others, the following: risks related to the Company’s business and financial position; fluctuations in the market price of the company’s common shares; that the Company may not be able to accurately predict its rate of growth and profitability; the risk that the parties may not come to final agreement upon volume, pricing and/or other terms or conditions necessary in order to complete the supply of antimony produced from the Stibnite Gold Project to Ambri Inc. on mutually acceptable terms; risks of either party being unable to fulfill the terms of the supply agreement with Ambri Inc. by virtue of delays and/or other hindrances to reaching production on the part of Perpetua Resources and/or commercialization on the part of Ambri Inc., as applicable; the failure of the Company to use any of the proceeds received from the Offering in a manner consistent with current expectations; and other unforeseen events, developments, or factors causing any of the aforesaid expectations, assumptions, and other factors ultimately being inaccurate or irrelevant and those factors discussed in greater detail under the “Risk Factors” section of the Prospectus Supplement of the Company dated August 13, 2021 and our Annual Information Form dated March 15, 2021 for the year ended December 31, 2020, each available under the Company’s profile on SEDAR at www.sedar.com and on EDGAR at www.sec.gov, and should be considered carefully by prospective investors.

If any of these risks or uncertainties materialize, or if the opinions, estimates or assumptions underlying the forward-looking information prove incorrect, actual results or future events might vary materially from those anticipated in the forward-looking information. Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that forward-looking statements 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 statements.

The Company disclaims any intention or obligation to update or revise any forward-looking statements whether as a result of new information, future events, or otherwise, except in accordance with applicable securities laws.

About Perpetua Resources and the Stibnite Gold Project

Perpetua Resources Corp., through its wholly owned subsidiaries, is focused on the exploration, site restoration and redevelopment of gold-antimony-silver deposits in the Stibnite-Yellow Pine district of central Idaho that are encompassed by the Stibnite Gold Project. The 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. Further advancing Perpetua Resources’ ESG and sustainable mining goals, the Project will be powered by the lowest carbon emissions grid in the nation and a portion of the antimony produced from the Project will be supplied to Ambri Inc., a U.S.-based company commercializing a low-cost liquid metal battery essential for the low-carbon energy transition. In addition to the Company’s commitments to transparency, accountability, environmental stewardship, safety and community engagement, Perpetua Resources adopted formal ESG commitments which can be found here.

For further information about Perpetua Resources Corp., please contact:
Jessica Largent
Vice President Investor Relations and Finance
jessica.largent@perpetuacorp.us
Info@perpetuacorp.us

Mckinsey Lyon
Vice President External Affairs
media@perpetua.us

Website: www.perpetuaresources.com

Stoltz 8/17/21 Stoltz 8/17/21

PERPETUA RESOURCES ANNOUNCES CLOSING OF US$50 MILLION PUBLIC OFFERING

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BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or the “Company”) today announced the completion of its previously announced underwritten marketed public offering in the United States and Canada. The Company has issued 9,523,810 common shares at a price to the public of US$5.25 per share for gross proceeds of US$50 million in connection with the offering (the “Offering”), which was led by B. Riley Securities, Inc. and Cantor Fitzgerald Canada Corporation, each acting as joint book-running managers. The Company has granted the underwriters a 30-day over-allotment option to purchase up to an additional 1,428,572 common shares.

The Company expects to use the net proceeds of the Offering to continue permitting, early restoration and field operations, engineering and design at the Stibnite Gold Project and for general corporate purposes.

Paulson & Co. Inc. (“Paulson”) purchased 3,835,810 common shares as part of the Offering to maintain its pro rata interest of 40.276% of outstanding common shares, pursuant to Paulson’s contractual participation right under the amended and restated investor rights agreement dated March 17, 2020, among Paulson, Idaho Gold Resources Company, LLC (a subsidiary of Perpetua Resources) and the Company. By virtue of the participation of Paulson, an insider of the Company, the Offering constituted a “related party transaction” under Multilateral Instrument 61-101 Protection of Minority Security Holders in Special Transactions (“MI 61-101”). The Company relied on exemptions from the formal valuation and minority shareholder approval requirements of MI 61-101 pursuant to subsections 5.5(a) and 5.7(1)(a) thereunder.

In connection with the Offering, Perpetua Resources filed a prospectus supplement dated August 13, 2021 to its base shelf prospectus dated April 1, 2021 to offer securities in each of the provinces of Canada, except Quebec. The base shelf prospectus was filed with, and declared effective by, the U.S. Securities and Exchange Commission as part of a registration statement on Form F-10 under the U.S.-Canada multijurisdictional disclosure system. A U.S. version of the prospectus supplement has also been filed with the SEC. The Offering is being made in Canada only by means of the base shelf prospectus and prospectus supplement and in the United States only by means of the registration statement on Form F-10. Such documents contain important information about the Offering. Prospective investors should read the base shelf prospectus and the prospectus supplement and the registration statement on Form F-10 before making an investment decision.

Copies of the base shelf prospectus and the prospectus supplement can be found on SEDAR at www.sedar.com, and a copy of the registration statement and U.S. prospectus supplement can be found on EDGAR at www.sec.gov. Copies of such documents may also be obtained by contacting the Company or any of the following sources: B. Riley Securities, Inc. at (703) 312-9580 or by emailing prospectuses@brileyfin.com, Cantor Fitzgerald Canada Corporation in Canada, by emailing ecmcanada@cantor.com, or Cantor Fitzgerald & Co. in the U.S., by emailing prospectus@cantor.com.

No securities regulatory authority has either approved or disapproved the contents of this press release. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the Common Shares in any province, state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such province, state or jurisdiction.

Cautionary Statement Regarding Forward-Looking STATEMENTS OR INFORMATION

Certain statements contained in this news release constitute forward-looking statements or “forward-looking information” within the meaning of applicable Canadian and United States securities laws (“forward-looking statements”). Often, but not always, forward-looking statements can be identified by the use of words such as “plans”, “expects” or “does not expect”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates” or “does not anticipate”, or “believes”, or describes a “goal”, or variation of such words and phrases or state that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved. Forward-looking statements in this news release include, but are not limited to, information and statements regarding: including plans to supply a portion of the expected antimony production from the Stibnite Gold Project to Ambri Inc.; and the anticipated use of proceeds from the Offering.

Forward-looking statements are neither historical facts nor assurances of future performance, instead they reflect the Company’s beliefs and assumptions based on information available at the time the statements were made. Actual results or events may differ from those predicted in these forward-looking statements. The Company does not undertake any obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise. All of the Company’s forward-looking statements are qualified by the assumptions that are stated or inherent in such forward-looking statements, including the assumptions listed below. Although the Company believes that these assumptions are reasonable, this list is not exhaustive of factors that may affect any of the forward-looking statements. The key assumptions that have been made in connection with the forward-looking statements include the following: there being sufficient investor demand for the Offering; economic and market conditions being conducive to the Offering on the timeline currently anticipated; the impact of COVID-19 on the business of the Company; the regulatory regime governing the business of the Company; the operations of the Company; the growth of the Company’s business; the integration of technology; and the impact of litigation on the Company.

Forward-looking statements involve known and unknown risks, future events, conditions, uncertainties and other factors that may cause actual results, performances or achievements to be materially different from any future results, predictions, projections, forecasts, performances or achievements expressed or implied by the forward-looking statements. Such factors include, among others, the following: risks related to the Company’s business and financial position; fluctuations in the market price of the company’s common shares; that the Company may not be able to accurately predict its rate of growth and profitability; the risk that the parties may not come to final agreement upon volume, pricing and/or other terms or conditions necessary in order to complete the supply of antimony produced from the Stibnite Gold Project to Ambri Inc. on mutually acceptable terms; risks of either party being unable to fulfill the terms of the Agreement by virtue of delays and/or other hindrances to reaching production on the part of Perpetua Resources and/or commercialization on the part of Ambri Inc., as applicable; the failure of the Company to use any of the proceeds received from the Offering in a manner consistent with current expectations; and other unforeseen events, developments, or factors causing any of the aforesaid expectations, assumptions, and other factors ultimately being inaccurate or irrelevant and those factors discussed in greater detail under the “Risk Factors” section of the Preliminary Prospectus Supplement and our Annual Information Form dated March 15, 2021 for the year ended December 31, 2020, each available under the Company’s profile on SEDAR at www.sedar.com and on EDGAR at www.sec.gov, and should be considered carefully by prospective investors.

About Perpetua Resources and the Stibnite Gold Project

Perpetua Resources Corp., through its wholly owned subsidiaries, is focused on the exploration, site restoration and redevelopment of gold-antimony-silver deposits in the Stibnite-Yellow Pine district of central Idaho that are encompassed by the Stibnite Gold Project. The 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. Further advancing Perpetua Resources’ ESG and sustainable mining goals, the Project will be powered by the lowest carbon emissions grid in the nation and a portion of the antimony produced from the Project will be supplied to Ambri Inc., a U.S.-based company commercializing a low-cost liquid metal battery essential for the low-carbon energy transition. In addition to the Company’s commitments to transparency, accountability, environmental stewardship, safety and community engagement, Perpetua Resources adopted formal ESG commitments which can be found here.

For further information about Perpetua Resources Corp., please contact:
Jessica Largent
Vice President Investor Relations and Finance
jessica.largent@perpetuacorp.us
Info@perpetuacorp.us

Mckinsey Lyon
Vice President External Affairs
media@perpetua.us

Website: www.perpetuaresources.com

Stoltz 8/13/21 Stoltz 8/13/21

PERPETUA RESOURCES ANNOUNCES PRICING OF PUBLIC OFFERING OF COMMON SHARES

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BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or the “Company”) today announced the pricing of its previously announced underwritten marketed public offering in the United States and Canada of 9,523,810 common shares at a price to the public of US$5.25 per share (the “Offering”). All of the shares to be sold in the Offering are to be sold by Perpetua Resources.

In addition, Perpetua Resources has granted the underwriters a 30-day over-allotment option to purchase up to an additional 1,428,572 common shares representing up to 15% of the number of common shares to be sold pursuant to the Offering, to cover the underwriters’ over-allocation position, if any, and for market stabilization purposes. The gross proceeds to Perpetua Resources from the Offering, before deducting the underwriting commissions and other Offering expenses, will be approximately US$50 million.

B. Riley Securities, Inc. and Cantor Fitzgerald Canada Corporation are acting as joint book-running managers for the Offering.

In connection with the Offering, Perpetua Resources has filed a preliminary prospectus supplement dated August 12, 2021 (the “Preliminary Prospectus Supplement”) to its base shelf prospectus dated April 1, 2021 (the “Base Shelf Prospectus”) to offer securities in each of the provinces of Canada, except Quebec. The Base Shelf Prospectus was filed with, and declared effective by, the U.S. Securities and Exchange Commission (“SEC”) as part of a registration statement on Form F-10 under the U.S.-Canada multijurisdictional disclosure system (MJDS). A U.S. version of the Preliminary Prospectus Supplement has also been filed with the SEC (the “U.S. Preliminary Prospectus Supplement”). The Offering is being made in Canada only by means of the Base Shelf Prospectus and Preliminary Prospectus Supplement and in the United States only by means of the registration statement on Form F-10. Such documents contain important information about the Offering. Prospective investors should read the Base Shelf Prospectus and the Preliminary Prospectus Supplement as well as the Base Shelf Prospectus and U.S. Preliminary Prospectus Supplement before making an investment decision.

The Offering is expected to close on or about August 17, 2021. Closing of the Offering will be subject to a number of customary conditions, including the listing of the Common Shares issued as part of the Offering on Nasdaq and the TSX, and the receipt of all necessary approvals, including any required Nasdaq and TSX approvals. There can be no assurance as to whether or when the Offering will be completed.

Copies of the Base Shelf Prospectus and the Preliminary Prospectus Supplement can be found on SEDAR at www.sedar.com, and a copy of the Registration Statement and the U.S. Preliminary Prospectus Supplement can be found on EDGAR at www.sec.gov. Copies of such documents may also be obtained by contacting the Company or any of the following sources: B. Riley Securities, Inc. at (703) 312-9580 or by emailing prospectuses@brileyfin.com, Cantor Fitzgerald Canada Corporation in Canada, by emailing ecmcanada@cantor.com, or Cantor Fitzgerald & Co. in the U.S., by emailing prospectus@cantor.com.

No securities regulatory authority has either approved or disapproved the contents of this press release. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the Common Shares in any province, state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such province, state or jurisdiction.

Cautionary Statement Regarding Forward-Looking STATEMENTS OR INFORMATION

Certain statements contained in this news release constitute forward-looking statements or “forward-looking information” within the meaning of applicable Canadian and United States securities laws (“forward-looking statements”). Often, but not always, forward-looking statements can be identified by the use of words such as “plans”, “expects” or “does not expect”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates” or “does not anticipate”, or “believes”, or describes a “goal”, or variation of such words and phrases or state that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved. Forward-looking statements in this news release include, but are not limited to, information and statements regarding: the conduct of the Offering; obtaining required approvals from the Nasdaq and the TSX; the granting of the Underwriters’ over-allotment option; and the anticipated use of proceeds from the Offering.

Forward-looking statements are neither historical facts nor assurances of future performance, instead they reflect the Company’s beliefs and assumptions based on information available at the time the statements were made. Actual results or events may differ from those predicted in these forward-looking statements. The Company does not undertake any obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise. All of the Company’s forward-looking statements are qualified by the assumptions that are stated or inherent in such forward-looking statements, including the assumptions listed below. Although the Company believes that these assumptions are reasonable, this list is not exhaustive of factors that may affect any of the forward-looking statements. The key assumptions that have been made in connection with the forward-looking statements include the following: there being sufficient investor demand for the Offering; economic and market conditions being conducive to the Offering on the timeline currently anticipated; the impact of COVID-19 on the business of the Company; the regulatory regime governing the business of the Company; the operations of the Company; the growth of the Company’s business; the integration of technology; and the impact of litigation on the Company.

Forward-looking statements involve known and unknown risks, future events, conditions, uncertainties and other factors that may cause actual results, performances or achievements to be materially different from any future results, predictions, projections, forecasts, performances or achievements expressed or implied by the forward-looking statements. Such factors include, among others, the following: risks related to the Company’s business and financial position; fluctuations in the market price of the Common Shares; that the Company may not be able to accurately predict its rate of growth and profitability; risks related to the COVID-19 pandemic and its impact on the Company, economic conditions, and global markets; the failure of the Company and/or the Underwriters to satisfy closing conditions to the Offering; the failure of the Company to satisfy certain Nasdaq and/or TSX listing requirements; the failure of the Company to use any of the proceeds received from the Offering in a manner consistent with current expectations; and other unforeseen events, developments, or factors causing any of the aforesaid expectations, assumptions, and other factors ultimately being inaccurate or irrelevant and those factors discussed in greater detail under the “Risk Factors” section of the Preliminary Prospectus Supplement and our Annual Information Form dated March 15, 2021 for the year ended December 31, 2020, each available under the Company’s profile on SEDAR at www.sedar.com and on EDGAR at www.sec.gov, and should be considered carefully by prospective investors.

About Perpetua Resources and the Stibnite Gold Project
Perpetua Resources Corp., through its wholly owned subsidiaries, is focused on the exploration, site restoration and redevelopment of gold-antimony-silver deposits in the Stibnite-Yellow Pine district of central Idaho that are encompassed by the Stibnite Gold Project. The 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. Further advancing Perpetua Resources’ ESG and sustainable mining goals, the Project will be powered by the lowest carbon emissions grid in the nation and a portion of the antimony produced from the Project will be supplied to Ambri, a U.S.-based company commercializing a low-cost liquid metal battery essential for the low-carbon energy transition. In addition to the Company’s commitments to transparency, accountability, environmental stewardship, safety and community engagement, Perpetua Resources adopted formal ESG commitments which can be found here.

For further information about Perpetua Resources Corp., please contact:
Jessica Largent
Vice President Investor Relations and Finance
jessica.largent@perpetuacorp.us
Info@perpetuacorp.us

Mckinsey Lyon
Vice President External Affairs
media@perpetua.us

Website: www.perpetuaresources.com

Stoltz 8/12/21 Stoltz 8/12/21

PERPETUA RESOURCES ANNOUNCES PUBLIC OFFERING OF COMMON SHARES

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BOISE, ID – Perpetua Resources Corp. (Nasdaq: PPTA / TSX: PPTA) (“Perpetua Resources” or the “Company”) today announced the launch of a marketed public offering of Perpetua Resources common shares (the “Common Shares”) in the United States and Canada (the “Offering”).

The Common Shares will be offered by the Company in an underwritten public offering with B. Riley Securities, Inc. and Cantor Fitzgerald Canada Corporation (collectively, the “Underwriters”) acting as joint book-running managers. The Offering is subject to market and other conditions and the total price and size will be determined upon the signing of the underwriting agreement (the “Underwriting Agreement”).

Perpetua Resources will grant the Underwriters an over-allotment option, exercisable for a period of 30 days from the date of the Underwriting Agreement, to purchase up to an additional 15% of the total number of Common Shares to be sold pursuant to the Offering.

In connection with the Offering, Perpetua Resources will file a preliminary prospectus supplement (the “Preliminary Prospectus Supplement”) to its base shelf prospectus dated April 1, 2021 (the “Base Shelf Prospectus”) to offer securities in each of the provinces of Canada, except Quebec. The Base Shelf Prospectus was filed with, and declared effective by, the U.S. Securities and Exchange Commission (“SEC”) as part of a registration statement on Form F-10 under the U.S.-Canada multijurisdictional disclosure system (MJDS). A U.S. version of the Preliminary Prospectus Supplement will also be filed with the SEC (the “U.S. Preliminary Prospectus Supplement”). The Offering will be made in Canada only by means of the Base Shelf Prospectus and Preliminary Prospectus Supplement and in the United States only by means of the Base Shelf Prospectus and the U.S. Preliminary Prospectus Supplement. Such documents contain important information about the Offering. Prospective investors should read the Base Shelf Prospectus and the Preliminary Prospectus Supplement as well as the Base Shelf Prospectus and U.S. Preliminary Prospectus Supplement before making an investment decision.

Closing of the Offering will be subject to a number of customary conditions, including the signing of the Underwriting Agreement, the listing of the Common Shares issued as part of the Offering on Nasdaq and the TSX, and the receipt of all necessary approvals, including any required Nasdaq and TSX approvals. There can be no assurance as to whether or when the Offering will be completed.

Copies of the Base Shelf Prospectus, when filed, and the Preliminary Prospectus Supplement can be found on SEDAR at www.sedar.com, and a copy of the Registration Statement and, when filed, the U.S. Preliminary Prospectus Supplement can be found on EDGAR at www.sec.gov. Copies of such documents may also be obtained by contacting the Company or any of the following sources: B. Riley Securities, Inc. at (703) 312-9580 or by emailing prospectuses@brileyfin.com, Cantor Fitzgerald Canada Corporation in Canada, by emailing ecmcanada@cantor.com, or Cantor Fitzgerald & Co. in the U.S., by emailing prospectus@cantor.com.

No securities regulatory authority has either approved or disapproved the contents of this press release. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the Common Shares in any province, state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such province, state or jurisdiction.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS OR INFORMATION

Certain statements contained in this news release constitute forward-looking statements or “forward-looking information” within the meaning of applicable Canadian and United States securities laws (“forward-looking statements”). Often, but not always, forward-looking statements can be identified by the use of words such as “plans”, “expects” or “does not expect”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates” or “does not anticipate”, or “believes”, or describes a “goal”, or variation of such words and phrases or state that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved. Forward-looking statements in this news release include, but are not limited to, information and statements regarding: the conduct of the Offering; obtaining required approvals from the Nasdaq and the TSX; the granting of the Underwriters’ over-allotment option; and the anticipated use of proceeds from the Offering.

Forward-looking statements are neither historical facts nor assurances of future performance, instead they reflect the Company’s beliefs and assumptions based on information available at the time the statements were made. Actual results or events may differ from those predicted in these forward-looking statements. The Company does not undertake any obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise. All of the Company’s forward-looking statements are qualified by the assumptions that are stated or inherent in such forward-looking statements, including the assumptions listed below. Although the Company believes that these assumptions are reasonable, this list is not exhaustive of factors that may affect any of the forward-looking statements. The key assumptions that have been made in connection with the forward-looking statements include the following: there being sufficient investor demand for the Offering; economic and market conditions being conducive to the Offering on the timeline currently anticipated; the impact of COVID-19 on the business of the Company; the regulatory regime governing the business of the Company; the operations of the Company; the growth of the Company’s business; the integration of technology; and the impact of litigation on the Company.

Forward-looking statements involve known and unknown risks, future events, conditions, uncertainties and other factors that may cause actual results, performances or achievements to be materially different from any future results, predictions, projections, forecasts, performances or achievements expressed or implied by the forward-looking statements. Such factors include, among others, the following: risks related to the Company’s business and financial position; fluctuations in the market price of the Common Shares; that the Company may not be able to accurately predict its rate of growth and profitability; risks related to the COVID-19 pandemic and its impact on the Company, economic conditions, and global markets; the failure of the Company and/or the Underwriters to satisfy closing conditions to the Offering; the failure of the Company to satisfy certain Nasdaq and/or TSX listing requirements; the failure of the Company to use any of the proceeds received from the Offering in a manner consistent with current expectations; and other unforeseen events, developments, or factors causing any of the aforesaid expectations, assumptions, and other factors ultimately being inaccurate or irrelevant and those factors discussed in greater detail under the “Risk Factors” section of the Preliminary Prospectus Supplement and our Annual Information Form dated March 15, 2021 for the year ended December 31, 2020, each available under the Company’s profile on SEDAR at www.sedar.com and on EDGAR at www.sec.gov, and should be considered carefully by prospective investors.

About Perpetua Resources and the Stibnite Gold Project

Perpetua Resources Corp., through its wholly owned subsidiaries, is focused on the exploration, site restoration and redevelopment of gold-antimony-silver deposits in the Stibnite-Yellow Pine district of central Idaho that are encompassed by the Stibnite Gold Project. The 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. Further advancing Perpetua Resources’ ESG and sustainable mining goals, the Project will be powered by the lowest carbon emissions grid in the nation and a portion of the antimony produced from the Project will be supplied to Ambri, a U.S.-based company commercializing a low-cost liquid metal battery essential for the low-carbon energy transition. In addition to the Company’s commitments to transparency, accountability, environmental stewardship, safety and community engagement, Perpetua Resources adopted formal ESG commitments which can be found here.

For further information about Perpetua Resources Corp., please contact:

Jessica Largent
Vice President Investor Relations and Finance
jessica.largent@perpetuacorp.us
Info@perpetuacorp.us

Mckinsey Lyon
Vice President External Affairs
media@perpetua.us

Website: www.perpetuaresources.com

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