IsoEnergy Reports Zero Environmental Incidents & 46% Indigenous Procurement in 2025 Sustainability Update

• IsoEnergy completed a two-year baseline water quality and hydrology program at the Larocque East project to support future environmental assessment (EA), permitting, and project advancement activities.
• The company reported zero reportable environmental incidents across its exploration and development portfolio during 2025.
• Indigenous companies and contractors received 46% of IsoEnergy's Canadian exploration spending, including 75% in Quebec and 42% in Saskatchewan.
• Indigenous workforce participation reached 78% in Quebec and 33% in Saskatchewan during the reporting period.
• IsoEnergy expanded its leadership team, commenced trading on the NYSE American exchange, and continued advancing its uranium portfolio across Canada, the United States, and Australia.

What Has Happened

IsoEnergy Ltd. (NYSE American: ISOU | TSX: ISO) has released its Sustainability Report for the year ended December 31, 2025, outlining environmental, social, and governance (ESG) performance across its uranium projects in Canada, the United States, and Australia. The report highlighted completion of a two-year baseline water quality and hydrology program at the Larocque East project, zero reportable environmental incidents across the company's portfolio, and continued Indigenous participation in exploration activities.

Environmental Programs & Project Advancement

IsoEnergy completed a two-year baseline water quality and hydrology program at the Larocque East project in Saskatchewan's Athabasca Basin. The project hosts the Hurricane deposit, which the company describes as the world's highest-grade indicated uranium mineral resource. According to IsoEnergy, the program generated environmental data required to support future environmental assessment (EA), permitting, and project advancement activities.

The company also reported zero environmental incidents during 2025 while continuing environmental monitoring, mitigation, reclamation, and restoration activities across its exploration and development portfolio. In Utah, IsoEnergy upgraded water management infrastructure at the Tony M Mine, a permitted past-producing uranium and vanadium operation. The upgrades included the installation of remote monitoring systems designed to strengthen environmental oversight and support operational readiness at the site, which currently operates under a toll milling arrangement with Energy Fuels.

Indigenous Partnerships & Workforce Participation

In 2025, IsoEnergy directed 46% of its Canadian exploration spending to Indigenous companies and contractors. Indigenous procurement represented 75% of exploration spending in Quebec and 42% in Saskatchewan. The company reported Indigenous workforce participation rates of 78% in Quebec and 33% in Saskatchewan. It continued to prioritise local employment, procurement, and engagement activities across its operating jurisdictions.

Community initiatives during the year included high school tours at the Tony M Mine, sponsorship of events in Saskatchewan and Quebec, a mineral exploration scholarship with Northlands College, and support for the Starsailor rocket launch project in partnership with Space Concordia and the Cree Nation of Mistissini at the Matoush project.

Governance Developments

IsoEnergy expanded its leadership team in 2025 by appointing a Vice President of Strategy and Commercial and a Director of External Relations. 

Chief Executive Officer and Director of IsoEnergy, Philip Williams, commented on the company's ability to attract senior talent:

“One of the things that I would say that we stand out on is the people that we've been attracting to this business. I mentioned that the recent VP encouraged people to go look her up. She is a tremendous resource.”

The company also commenced trading on the NYSE American exchange during the reporting period. The listing represented a significant corporate milestone and reflected its focus on governance, disclosure, and accountability standards.

Project Advancement Activities

IsoEnergy stated that it will continue advancing its uranium portfolio across Canada, the United States, and Australia while maintaining its focus on environmental stewardship, community engagement, and governance practices. At the Larocque East project, the company will utilise the newly completed baseline water quality and hydrology data to support future EAs, regulatory permitting activities, and project advancement. 

At the Tony M Mine, which currently operates under a toll milling arrangement with Energy Fuels, the company will maintain the site on standby to preserve readiness for a rapid restart as uranium market conditions permit.

Williams commented on the company's future priorities, 

"What I worry about is moving my assets ahead. Do we have the right assets? Do we already have the right business plan, and are there other opportunities to add accretively to the portfolio."

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