IsoEnergy Unlocks High-Grade Uranium as Nuclear Renaissance Accelerates

TORONTO, ON – December 03, 2025 – As nations worldwide pivot back to nuclear power to meet ambitious decarbonization goals and secure energy independence, the global uranium market is experiencing a structural shift defined by surging demand and a constrained supply. In this bullish environment, the focus intensifies on junior explorers capable of discovering and developing the next generation of mines. IsoEnergy Ltd. just stepped firmly into that spotlight, announcing highly encouraging exploration results that not only expand its flagship Canadian project but also underscore the immense potential still locked within the world's richest uranium district.

The company's latest update from its 2025 exploration program in Saskatchewan's Athabasca Basin provides a textbook example of systematic exploration translating into tangible assets. By confirming high-grade uranium geochemistry in multiple drill holes at its Larocque East project, IsoEnergy has provided crucial validation that moves its promising discoveries further along the path from prototype to profit.

Drilling Down into a World-Class Discovery

The Athabasca Basin is legendary in the mining industry, hosting deposits with uranium grades that can be over 100 times the global average. It is the benchmark against which all other uranium discoveries are measured. IsoEnergy's latest results reaffirm the district's prospectivity and the company's place within it.

The most significant finding comes from what was previously a greenfield exploration target. Drill hole LE25-202, located a considerable 2.8 kilometers east of the company's established Hurricane deposit, has returned the project's best uranium intersection to date outside of the main deposit area. Geochemical analysis confirmed an intercept of 1.05% U3O8 over 0.5 meters. While seemingly small, in the high-grade context of the Athabasca Basin, such a result is a powerful indicator of a potentially large and fertile mineralizing system extending well beyond known boundaries.

As Dan Brisbin, Vice President of Exploration, commented in the release, "the intersection in drill hole LE25-202... is the best uranium intersection on the Larocque East project to date outside of the Hurricane deposit area, highlighting the prospectivity of the Larocque Trend." This single hole significantly expands the exploration frontier and opens up a vast new area for follow-up drilling.

Closer to the Hurricane deposit, which already boasts the world's highest-grade indicated uranium resource, drilling designed to expand the deposit's footprint also hit its mark. Multiple holes returned strongly anomalous results, including:

• LE25-207: Intersected 1.61% U3O8 over 0.5 meters just above the unconformity and a separate zone of 1.71% U3O8 over 0.5 meters just below it.
• LE25-194: Hit 0.872% U3O8 over 0.5 meters within a broader 3.5-meter mineralized interval.

These results are not just numbers on a page; they are critical data points that will be integrated into the geological model to potentially grow the Hurricane resource. For investors and analysts, this demonstrates a key step in de-risking the asset and adding quantifiable value.

A Market in Renaissance: Timing the Uranium Upswing

IsoEnergy's exploration success could not be better timed. The uranium market is undergoing a profound transformation. After years in the doldrums following the 2011 Fukushima disaster, a powerful confluence of factors has ignited a new bull market. The World Nuclear Association projects uranium demand will climb 28% by 2030 and could more than double by 2040 as dozens of new reactors come online globally and governments extend the lives of existing fleets.

New sources of demand are also emerging, from the development of Small Modular Reactors (SMRs) to the colossal energy needs of AI and data centers, for which nuclear provides the only viable, carbon-free, 24/7 baseload power. This demand surge is colliding with a fragile supply chain. The world's largest producer, Kazakhstan, has signaled production issues, while Canada's Cameco has tempered its own output guidance. Geopolitical instability in Africa and a concerted Western effort to move away from Russian nuclear fuel have further tightened available supply, creating a structural deficit that can only be filled by new discoveries in stable jurisdictions.

This supply-demand imbalance has driven uranium spot prices from lows near $20 per pound just a few years ago to over $80 per pound in late 2025, with long-term contract prices reaching 17-year highs. For companies like IsoEnergy, successful exploration in a top-tier jurisdiction like Canada represents a direct path to filling this critical supply gap and capturing the value created by this new energy paradigm.

Building the Path from Discovery to Delivery

Identifying high-grade uranium is only the first step. The journey from a drill core to a commercial product requires a sophisticated corporate strategy, deep market expertise, and a clear, funded plan. IsoEnergy's recent moves indicate a deliberate focus on building this commercialization engine.

A pivotal development is the appointment of Misty Urbatsch as Vice President, Strategy and Commercial. Her resume is tailor-made for a company at IsoEnergy's inflection point. With over 15 years at uranium giant Cameco, Ms. Urbatsch brings a rare combination of technical and commercial acumen. She began her career in the field, exploring for the very same types of deposits in the Athabasca Basin that IsoEnergy is now defining. Later, she transitioned to Cameco's marketing division, overseeing international uranium sales and trading.

This appointment is a clear signal that IsoEnergy is thinking beyond the drill bit. Ms. Urbatsch’s experience is precisely what is needed to navigate the opaque uranium market, build relationships with global utilities, and ultimately secure the long-term offtake agreements that are essential to financing mine construction. It is a critical milestone on the path to commercial viability.

This strategic hire is backed by a concrete operational plan. The company is already preparing for an aggressive winter 2026 drilling program, with 5,200 meters planned at Larocque East to follow up on the recent successes. Simultaneously, geophysical surveys are planned across a portfolio of other highly prospective projects, including Hawk, Evergreen, and Trident. This demonstrates a two-pronged strategy: aggressively advance the flagship asset while systematically building a pipeline of future discoveries, ensuring long-term growth potential. This methodical approach, combining geological validation with the assembly of a commercially-focused leadership team, provides a clear roadmap for translating today's exploration wins into tomorrow's profitable production.