IsoEnergy Releases 2025 Sustainability Report, Directing 46% of Canadian Exploration Spend to Indigenous Companies

IsoEnergy Ltd. has released its Sustainability Report for the year ended December 31, 2025. The report discloses zero reportable environmental incidents across all projects in 2025, with 46% of Canadian exploration spending directed to Indigenous companies and contractors. Indigenous project site workforce participation rates reached 78% in Quebec and 33% in Saskatchewan, while Indigenous procurement represented 75% of exploration spend in Quebec and 42% in Saskatchewan. The company commenced trading on the NYSE American in 2025 and appointed a Vice President, Strategy and Commercial, and a Director, External Relations, during the year.

Company Overview

IsoEnergy Ltd. (NYSE American: ISOU | TSX: ISO) is a globally diversified uranium company with current and historical mineral resources in Canada, the US and Australia at varying stages of development. The company is advancing its Larocque East Project in Canada's Athabasca Basin, home to the Hurricane deposit, which the company describes as holding 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 Inc., currently on standby for potential restart.

Environmental Stewardship

IsoEnergy Ltd. recorded zero reportable environmental incidents across all projects during 2025, per the 2025 Sustainability Report. The company completed a 2-year baseline water quality and hydrology program at the Larocque East Project, providing environmental data to support future assessment, permitting and project advancement. Enhanced water management infrastructure was also installed at the Tony M Mine through remote monitoring systems.

Indigenous Partnerships and Community Engagement

46% of Canadian exploration spending was directed to Indigenous companies and contractors in 2025. Indigenous project site workforce participation rates reached 78% in Quebec and 33% in Saskatchewan, while Indigenous procurement represented 75% of exploration spend in Quebec and 42% in Saskatchewan, per the 2025 Sustainability Report. The Company supported the historic Starsailor rocket launch at the Matoush Project in partnership with Space Concordia and the Cree Nation of Mistissini, and invested in education and training initiatives, including high school tours at the Tony M Mine, a mineral exploration scholarship with Northlands College, and sponsorship of community events in Saskatchewan and Quebec.

Governance & Organisational Capacity

The company commenced trading on the NYSE American in 2025 and expanded its leadership team by appointing a Vice President, Strategy and Commercial, and a Director, External Relations, per the 2025 Sustainability Report. The company maintained focus on cybersecurity, enterprise risk management, financial oversight and regulatory compliance across the organisation during the year.

Chief Executive Officer and Director of IsoEnergy Ltd., Philip Williams, commented:

 "As IsoEnergy continues to grow and advance a diversified portfolio of uranium projects across North America and Australia, maintaining high standards of environmental stewardship, community relationships, and corporate governance remains fundamental to our success. During 2025, we strengthened our environmental programs, expanded partnerships with Indigenous communities, increased local employment and procurement opportunities, and enhanced our leadership team and governance framework. The commencement of trading on the NYSE American marked an important milestone in our evolution, reflecting the scale of our ambitions and our commitment to transparency, accountability, and operational excellence. As demand for secure, low-carbon nuclear energy continues to increase, we remain focused on advancing our projects responsibly and creating lasting value for rights holders, communities, partners, and shareholders."

Next Steps

The full 2025 Sustainability Report is available at www.isoenergy.ca/sustainability/. No additional milestones were disclosed in connection with this announcement.