IsoEnergy Highlights Strong Jurisdictional Rankings in the Fraser Institute’s 2026 Annual Survey of Mining Companies and Files Fiscal 2025 Annual Report
Press Release
Toronto, ON, February 27, 2026 – IsoEnergy Ltd. (“IsoEnergy” or the “Company”) (NYSE American: ISOU; TSX: ISO) is pleased to highlight the results of the 2026 Annual Survey of Mining Companies (the “Survey”) published by the Fraser Institute, underscoring the strength of the tier one jurisdictions that underpin the Company’s globally diversified uranium portfolio and the filing of its annual report on Form 40-F for the fiscal year ended December 31, 2025.
Highlights
- The 2026 Fraser Institute survey underscores the strength of IsoEnergy’s tier one jurisdictional exposure, with Canada, the United States and Australia each placing multiple jurisdictions among the global leaders in mining competitiveness.
- Canada continues to demonstrate global leadership, led by Saskatchewan, which ranked 3rd globally on the Investment Attractiveness Index (IAI), its sixth Top 10 placement in seven years.
- United States remains globally significant, with Utah ranking 12th on the Policy Perception Index (PPI), reflecting improving regulatory sentiment as IsoEnergy advances its portfolio of past-producing assets toward potential restart.
- Australia showed notable upward momentum in this year’s survey, with three jurisdictions where IsoEnergy holds projects ranking strongly: South Australia (4th on IAI), Western Australia (6th on IAI; 3rd on the Best Practices Mineral Potential Index (BPMPI)), and Queensland (13th on IAI), highlighting the country’s compelling combination of mineral potential and favourable mining policy.
View the full Survey at: https://www.fraserinstitute.org/sites/default/files/2026-02/annual-survey-of-mining-companies-2025.pdf?v=022705
Philip Williams, CEO and Director of IsoEnergy, commented,
“We are encouraged to see several jurisdictions within IsoEnergy’s portfolio once again rank among the global leaders in the Fraser Institute’s 2026 survey. Saskatchewan’s sustained top-tier performance, together with Western Australia’s meaningful advancement this year, reinforces the geological quality and policy stability that underpin our asset base and guide our M&A strategy. These results affirm our disciplined focus on advancing high-quality projects in tier one jurisdictions where we believe institutional capital can be allocated with confidence and long-term value can be responsibly created.”
Summary of the Survey Results
In Canada, Saskatchewan’s 3rd-place global ranking reflects continued strong support from industry respondents for both its mineral potential and policy framework. The province is internationally recognized as one of the world’s leading uranium jurisdictions and hosts IsoEnergy’s Larocque East Project, home to the Hurricane Deposit, the world’s highest grade published Indicated uranium Mineral Resource (48.6 Mlb U3O8 at 34.5% U3O8 Indicated, and 2.7 Mlb U3O8 at 2.2% U3O8 Inferred)1.
In the United States, specifically Utah, where IsoEnergy holds a portfolio of past-producing mines, the state ranked 38th overall. The decline was driven primarily by a reduction in perceived mineral potential; however, established and historically producing assets are expected to benefit from Utah’s continued strength in policy perception metrics.
In Australia, Western Australia’s advancement to 6th globally on the Investment Attractiveness Index and 3rd on the Best Practices Mineral Potential Index highlights both its strong policy framework and significant geological potential. The improved rankings align with IsoEnergy’s strategic expansion into Western Australia with the Company’s planned acquisition of Toro Energy Limited announced on October 12, 2025. Additionally, IsoEnergy holds exploration projects in South Australia and Queensland, ranking 4th and 13th, respectively.
The Fraser Institute’s Annual Survey of Mining Companies is widely regarded as a benchmark assessment of global mining investment competitiveness. The Investment Attractiveness Index combines mineral potential and policy factors, while the Best Practices Mineral Potential Index evaluates geological prospectivity under ideal policy conditions.
The summary of the Survey contained herein is subject to all of the assumptions, qualifications and procedures set out in the Survey and is qualified in its entirety by reference to the full text of the Survey.
Filing of Annual Report on Form 40-F
IsoEnergy has filed its annual report on Form 40-F for the fiscal year ended December 31, 2025 with the U.S. Securities and Exchange Commission (the “SEC”), in accordance with NYSE American requirements. The Form 40-F includes the Company’s annual information form, audited consolidated financial statements, related notes thereto and management’s discussion and analysis.
The Form 40-F is available for viewing on the SEC’s website at http://www.sec.gov/edgar.shtml and on the Company’s website at www.isoenergy.ca.
Holders of IsoEnergy’s securities may receive a free printed copy of the Company’s most recent Annual Report on Form 40-F, including the audited financial statements, by sending an email request to info@isoenergy.ca or by writing to IsoEnergy Ltd., 401 – 217 Queen Street West, Toronto, Ontario, Canada M5V 0R2.
Qualified Person Statement
The scientific and technical information contained in this news release was reviewed and approved by Dr. Dan Brisbin, P.Geo., IsoEnergy’s Vice President, Exploration, who is a “Qualified Person” (as defined in NI 43-101 – Standards of Disclosure for Mineral Projects).
For additional information regarding the Company’s Larocque East Project, including the current mineral resource estimate for IsoEnergy’s Hurricane deposit, please see the technical report entitled “Technical Report on the Larocque East Project, Northern Saskatchewan, Canada” dated August 4, 2022, available on the Company’s profile at www.sedarplus.ca and on EDGAR at www.sec.gov.
About IsoEnergy Ltd.
IsoEnergy (NYSE American: ISOU; TSX: ISO) is a leading, globally diversified uranium company with substantial current and historical mineral resources in top uranium mining jurisdictions of Canada, the U.S. and Australia at varying stages of development, providing near-, medium- and long-term leverage to rising uranium prices. IsoEnergy is currently advancing its Larocque East project in Canada’s Athabasca basin, which is home to the Hurricane deposit, boasting the world’s highest-grade indicated uranium mineral resource. IsoEnergy also holds a portfolio of permitted past-producing, conventional uranium and vanadium mines in Utah with a toll milling arrangement in place with Energy Fuels. These mines are currently on standby, ready for rapid restart as market conditions permit, positioning IsoEnergy as a near-term uranium producer.
For further information, please contact:
Philip Williams
CEO and Director
info@isoenergy.ca
1-833-572-2333
X: @IsoEnergyLtd
www.isoenergy.ca
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