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Midas Gold Announces Name Change to Perpetua Resources and Approved Nasdaq Listing New Name Reinforces Commitment to Idaho Restoration of Legacy Mining District and Domestic Production of Critical Mineral Antimony Shares to Begin Trading on Nasdaq on February 18

Listings & Exchange Corporate Actions

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Midas Gold Announces Name Change to Perpetua Resources and Approved Nasdaq Listing

New Name Reinforces Commitment to Idaho

Restoration of Legacy Mining District and Domestic Production of Critical Mineral Antimony

Shares to Begin Trading on Nasdaq on February 18

Management Team Strengthened with Hiring of Jessica Largent and Promotion of Tanya Nelson

BOISE, ID – Perpetua Resources Corp. (formerly Midas Gold Corp.) (MAX:TSX / MDRPF:OTCQX,) (“Perpetua Resources”

or the “Company”) announced today that it has changed its name to “Perpetua Resources Corp.” effective February

15, 2021 and the Company’s common shares have been approved for listing on the Nasdaq Stock Market (“Nasdaq”).

The Company’s common shares will begin trading on the Nasdaq on February 18, 2021 under the symbol “PPTA” and

on the Toronto Stock Exchange (“TSX”) under the new name at market open on or around February 18, 2021 under

the stock symbol “PPTA”. As the Stibnite Gold Project (the “Stibnite Project” or “Project”) continues to advance

through major milestones, the listing on a U.S. stock exchange is a strategic decision to focus the Company’s business

in the United States and open additional opportunities for American investment.

“Today’s approval to list on the Nasdaq points to our growth and readiness to enter the next chapter of bringing the

Stibnite Gold Project vision to life,” said Laurel Sayer, President and CEO of Perpetua Resources. “The Nasdaq is a

premier electronic exchange. Our listing here will allow us greater access to capital, which will help our team move

the Stibnite Gold Project from perm itting into production. We look forward to connecting with new investors, while

delivering value to our long-term shareholders who have supported our vision for years.”

The new name “Perpetua Resources” is inspired by Idaho’s motto,

Esto Perpetua , transl ated to mean “let it be perpetual”, and a

reflection of the Company’s commitment to doing its part to protect

the State of Idaho’s vast resources for generations to come. Midas

Gold Idaho, Inc., the Company’s wholly owned subsidiary, has also

updated its name to “Perpetua Resources Idaho, Inc.”

“We have always been more than a gold mining company, but you wouldn’t have known it by our name,” said Sayer .

“The name Perpetua Resources better reflects our plan to restore an abandoned mining site, to responsibly develop

the critical resources our country needs for a more secure and sustainable future and to be guided by a commitment

to Idaho’s resources and people. We are proud to enter our next chapter with a name that helps communicate our

values and the sustainable future we are working to create for all of us.”

The name change not only follows the Company’s recent announcement that it has relocated its corporate

headquarters to Boise, Idaho, but the name also better aligns with the company’s vision and reflects the natural

evolution in this next phase of project development. Recent accomplishments include the completion of a successful

NEWS RELEASE

February 16, 2021

#2021-04

Perpetua Resources Corp.

405 S. 8th Street

Boise, ID 83702

Tel:208-901-3060

www.perpetuaresources.com

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comment period for the Draft Environmental Impact Statement for t he Stibnite Gold Project, release of a positive

Feasibility Study, and an agreement finalized with regulators to help address legacy water contamination at the

abandoned mining district that will enable the company to begin to restore the site.

The Stibnite Gold Project was 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. Antimony is a federally

designated critical mineral for its use in the national energy, defense, aerospace and technology sectors. Recent

developments point to antimony playing an important role in renewable energy, including in wind turbines and solar

panels, as well as emerging liquid metal batteries needed for larg e-scale energy storage in the green energy future.

The Project is also one of the highest -grade gold deposits in the United States and would provide the resources

necessary to fund the much -needed cleanup and restoration of the abandoned Stibnite Mining Di strict. While the

name is changing, the people, the project and the commitments made over the last ten years remain the same.

The Company introduced its new name with a video. It can be found here.

The Company has also updated its investor presentation and can be viewed here.

Idaho Team Growing

As Perpetua Resources moves its corporate headquarters to Idaho, it is also growing its team. Jessica Largent has

joined the team as Vice President of Investor Relations and Finance. Ms. Largent has held finance leadership roles at

Newmont, Turquoise Hill Resources an d Rio Tinto and brings more than 15 years of mining industry experience in

investor relations, planning, financial reporting and accounting to Perpetua Resources.

“This is a really exciting time for Perpetua Resources as we advance through the final perm itting stages following a

decade’s worth of study work and regulatory review. With a strong team, a critical minerals project and a commitment

to mining responsibly, the company has all the right ingredients for long-term value creation,” said Largent.

Largent comes to Perpetua Resources after serving as the Vice President of Investor Relations for Newmont, a gold

mining company with operations in North America, South America, Australia and Africa. Largent will be responsible

for the strategy and leadersh ip of the Company's investor relations and finance efforts, drawing on her extensive

relationships and years of finance experience.

The Company has also promoted long -time Idaho employee Tanya Nelson from Human Resources Manager and

Corporate Secretary to the Midas Gold Idaho, Inc board to Vice President of Human Resources and Corporate

Secretary of Perpetua Resources. Ms. Nelson has worked for the Company since 2012 and throughout that time has

taken on more responsibility as the team has grown. Having more than 15 years of experience in accounting and

human resources, Ms. Nelson is also an Idaho native and has lived in Valley County, where the Project is located, since

1998.

“I am passionate about working to provide job opportunities for rural Idaho and giving people the chance to come

back home and start careers that will allow them to support their families,” said Nelson. “Th e people at Perpetua

Resources are the strength of this Company and bring our corporate values to life through their actions. Our team

cares about the Project but more importantly they care about Idaho, our neighbors and each other. I look forward to

continuing to develop the talent that already exists on our team and recruiting the next generation of our workforce

to help us bring our project from permitting to operations.”

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

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Jessica Largent

Vice President Investor Relations and Finance

[email protected]

[email protected]

Mckinsey Lyon

Vice President External Affairs

[email protected]

Facebook: www.facebook.com/perpetuaresources Twitter: @Perpetuadaho

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. Antimony is a fed erally designated

critical mineral for its use in the national defense, aerospace and technology sectors. 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 the expected dates on which trading is expected t o commence on the Nasdaq and TSX; and the anticipated

benefits of the Project and the Nasdaq listing. 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 a pplied 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 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 mater ially 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; risks related to unforeseen

delays in the review process including availability of personnel from the Un ited States Forest Service, 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 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 act ual

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

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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.