IsoEnergy Boosts Stake in US Uranium Player, Betting on Nuclear Revival

TORONTO, ON – December 30, 2025 – In a move that underscores a bullish outlook on the American nuclear energy sector, IsoEnergy Ltd. has significantly increased its investment in Premier American Uranium Inc. (PUR), a company it helped establish. The transaction deepens IsoEnergy's exposure to the burgeoning U.S. uranium market at a time of rising prices and growing demand for domestic energy sources.

IsoEnergy announced it has acquired an additional 2,135,760 common shares and warrants for another 2,708,627 shares of PUR. The deal, valued at approximately $1.16 million, was structured as a share swap, with IsoEnergy issuing 100,000 of its own common shares at a deemed price of $11.58 per share. This strategic acquisition boosts IsoEnergy’s non-diluted ownership in PUR from approximately 6.27% to 9.42%. On a partially-diluted basis, assuming the exercise of all warrants, its potential stake now stands at over 13%.

Philip Williams, CEO and Director of IsoEnergy, framed the investment as a timely and strategic decision. "As a co-founder of PUR in late 2023, we have been impressed by the company's consistent track record of value creation through disciplined M&A and asset advancement," Williams stated in the official press release. "Against a strengthening uranium price environment and powerful tailwinds in the nuclear sector--particularly in the United States, where PUR is focused--we believe this is an opportune time to increase our equity exposure to the company."

A Strategic Bet on America's Nuclear Renaissance

Williams' comments highlight a pivotal trend shaping the global energy landscape: the resurgence of nuclear power as a critical component of decarbonization and energy security strategies. The United States, in particular, is experiencing a policy-driven revival of its nuclear sector, creating powerful incentives for the development of a domestic uranium supply chain. This transaction positions IsoEnergy to capitalize directly on these tailwinds.

Premier American Uranium is squarely focused on this domestic opportunity. The company was formed in late 2023 through a spin-out from Consolidated Uranium Inc. with a clear mandate: to consolidate, explore, and develop uranium projects across the United States. Its portfolio is strategically spread across America's most historically significant uranium districts, including Wyoming's Great Divide and Powder River Basins, the Uravan Mineral Belt in Colorado, and, most notably, the Grants Mineral Belt in New Mexico.

This renewed focus on domestic production comes as the uranium market continues its upward trajectory. Market analysts and industry leaders point to a structural supply deficit, with global demand outstripping production for years. The recent positive Preliminary Economic Assessment (PEA) for PUR's flagship Cebolleta Project in New Mexico, filed in early December 2025, was based on a uranium price of $90 per pound, reflecting strong market fundamentals and optimistic future pricing.

Deepening a Foundational Partnership

IsoEnergy's decision to increase its stake is more than a simple market play; it is an affirmation of a foundational relationship. As a co-founder, IsoEnergy has been involved with PUR from its inception, alongside other key backers like Sachem Cove Partners and Mega Uranium Ltd. This deeper investment signals strong confidence in PUR's management team and its asset development strategy.

PUR has been actively advancing its portfolio, aiming to become a key player in re-establishing a robust American uranium industry. The company's Cebolleta Project PEA outlined the potential for a long-life, low-capital-expenditure uranium mine. The study projected a post-tax Net Present Value (NPV) of $83.9 million and an Internal Rate of Return (IRR) of 17.7%, demonstrating the economic viability of its assets in the current price environment. By increasing its ownership, IsoEnergy gains greater exposure to the potential upside of this and other projects in PUR's pipeline.

The transaction serves as a powerful endorsement for PUR, providing it with a strengthened partnership with a leading, globally diversified uranium entity. This backing is crucial for an exploration and development-stage company that relies on investor confidence and strategic support to advance its projects through capital-intensive permitting and development phases.

Unpacking the Portfolios: A Complementary Fit

The strategic logic of the investment becomes clearer when examining the complementary nature of the two companies' asset portfolios. IsoEnergy is a multi-faceted player with a global footprint and assets at varying stages of development, providing leverage to uranium prices across different time horizons.

Its crown jewel is the Larocque East project in Canada's Athabasca Basin, which hosts the Hurricane deposit—recognized as the world's highest-grade indicated uranium mineral resource. This project represents a significant long-term, high-value development opportunity. In the United States, IsoEnergy already holds a portfolio of permitted, past-producing uranium and vanadium mines in Utah. These mines are currently on standby, ready for a rapid restart, positioning IsoEnergy as a potential near-term American uranium producer should market conditions warrant.

By increasing its stake in PUR, IsoEnergy adds a significant exploration and development dimension to its U.S. strategy. PUR’s extensive land holdings in New Mexico, Wyoming, and Colorado offer substantial exploration upside and the potential for new discoveries. This complements IsoEnergy's own near-term production capabilities in Utah, creating a more robust and diversified American uranium platform that spans the full development cycle from grassroots exploration to potential production.

From an investor's perspective, the transaction is a calculated move to enhance shareholder value without a significant cash outlay. By using its own shares for the purchase, IsoEnergy conserves its treasury for advancing its core projects like Larocque East and preparing its Utah mines. Simultaneously, it leverages its equity to gain a larger piece of PUR's potential growth, effectively betting that the value created by PUR's U.S. assets will ultimately benefit IsoEnergy's own shareholders. While IsoEnergy has stated the securities are held for investment purposes and that it has no current plans for further action, it maintains the flexibility to adjust its holding as the market and PUR's prospects evolve.