IsoEnergy Acquires Additional Securities in Premier American Uranium Inc.

Rhea-AI Summary

IsoEnergy (NYSE American: ISOU) acquired 2,135,760 common shares and warrants to buy 2,708,627 shares of Premier American Uranium (PUR) in exchange for 100,000 IsoEnergy shares issued at a deemed price of $11.58 per share, representing aggregate consideration of $1,158,000.

After the Transaction IsoEnergy holds 6,381,601 PUR shares and warrants to acquire 2,876,335 shares, representing approximately 9.42% of PUR on a non-diluted basis and 13.11% on a partially-diluted basis (before conversion of compressed PUR shares). Assuming conversion of compressed shares, those holdings equal about 8.09% non-diluted and 11.32% partially-diluted.

The securities are held for investment and IsoEnergy filed an early warning report under National Instrument 62-103.

Positive

• Consideration issued: $1,158,000 via 100,000 IsoEnergy shares
• IsoEnergy stake increased to 6,381,601 PUR shares
• Post-transaction ownership: 9.42% non-diluted and 13.11% partially-diluted

Negative

• Conversion of compressed PUR shares reduces stake to 8.09% non-diluted
• Partially-diluted stake subject to warrant exercise variability (13.11% → 11.32% if converted)

Key Figures

ISO Shares Issued 100,000 shares Consideration paid to acquire PUR shares and warrants

Deemed Share Price $11.58 per share Valuation used for ISO Shares issued in transaction

Aggregate Consideration $1,158,000 Total value of ISO Shares issued for PUR securities

PUR Shares Acquired 2,135,760 shares New PUR Common Shares acquired in transaction

PUR Warrants Acquired 2,708,627 warrants New warrants to acquire PUR shares received

Post-Deal PUR Stake 9.42% non-diluted Ownership of PUR Common Shares after transaction, before Compressed Shares

Post-Deal Partially Diluted 13.11% stake Ownership assuming exercise of IsoEnergy warrants, before Compressed Shares

Compressed-Adjusted Partially Diluted 11.32% stake Ownership assuming all Compressed Shares convert and IsoEnergy warrants exercised

Market Reality Check

$8.94 Last Close

Volume Volume 24,874 is below the 20-day average of 56,472, indicating subdued pre-news activity. low

Technical Price $8.94 is trading above the 200-day MA at $8.09 ahead of this announcement.

Peers on Argus

ISOU was down 2.79% with uranium peers largely weaker as EU (-1.65%), UROY (-3.83%), URG (-3.55%) and DNN (-2.95%) fell, while UUUU gained 2.52%, pointing to mixed, stock-specific dynamics rather than a uniform sector move.

Historical Context

Date	Event	Sentiment	Move	Catalyst
Dec 03	Exploration update	Positive	+4.8%	Reported 2025 Athabasca drilling results and outlined Winter 2026 programs.
Oct 12	Corporate acquisition	Positive	+7.7%	Announced agreement to acquire Toro Energy and expand uranium resource base.
Sep 18	Drill results	Positive	+5.8%	Disclosed high‑grade U₃O₈ intercepts at Dorado joint venture project.
Sep 18	Drill results	Positive	+5.8%	Further detailed strong Dorado drill assays and planned follow‑up work.
Sep 17	Program launch	Positive	+1.7%	Launched 2025 U.S. exploration program focused on Utah uranium assets.

Pattern Detected

Recent news, including exploration updates and an earlier acquisition, has generally coincided with positive next-day price reactions, suggesting the stock has recently responded constructively to operational and M&A developments.

Recent Company History

Over the last six months, IsoEnergy has combined exploration progress with corporate growth. U.S. and Athabasca Basin exploration programs and high-grade Dorado results supported modest to strong gains of up to 5.83%. The October Toro Energy acquisition headline aligned with a 7.66% move, showing investors engaging with portfolio-building M&A. Today’s additional PUR stake continues that theme of using equity to expand strategic uranium exposure alongside active exploration.

Market Pulse Summary

This announcement details IsoEnergy’s acquisition of 2,135,760 PUR shares and 2,708,627 warrants, paid with 100,000 ISO shares valued at $11.58 each. The move lifts its PUR stake to 9.42% on a non‑diluted basis and 13.11% partially diluted, before Compressed Shares. In the context of earlier exploration successes and the Toro Energy acquisition, this continues a strategy of broadening uranium exposure. Investors may watch future PUR‑related disclosures and additional M&A steps.

Key Terms

warrants financial

"and warrants to acquire an additional 2,708,627 PUR Shares"

Warrants are special documents that give you the right to buy a company's stock at a set price before a certain date. They are often used as a way for companies to attract investors or raise money, and their value can increase if the company's stock price goes up.

non-diluted basis financial

"representing approximately 6.27% of the outstanding PUR Common Shares on a non-diluted basis"

Non-diluted basis describes ownership percentages or per-share figures calculated using only the company’s currently outstanding shares, ignoring any potential future shares from options, warrants, convertibles or planned issuances. Investors use it to see the present snapshot of claims or earnings per share as if the pie’s size won’t change; it’s like measuring each person’s slice today without accounting for guests who might later get slices.

partially-diluted basis financial

"and approximately 6.50% of the outstanding PUR Common Shares on a partially-diluted basis"

A partially-diluted basis is a way of counting a company’s shares that includes currently outstanding shares plus certain likely additional shares from things like vested options, warrants, and convertible securities, but excludes more speculative or unissued items. For investors it gives a more realistic view of ownership stakes and per-share figures — like earnings per share — by showing dilution that is probable today, much as counting people with purchased tickets (but not those who might buy later) gives a clearer sense of how full a theater really is.

National Instrument 62-103 regulatory

"pursuant to National Instrument 62-103 – The Early Warning System"

National Instrument 62-103 is a Canadian securities rule that requires public disclosure when someone builds a large ownership stake or launches a takeover attempt for a company’s shares. Think of it as a neighborhood rule that forces anyone buying a big slice of a pie to put up a sign so neighbors know a change of ownership might be coming. For investors it matters because these filings signal potential shifts in control, can move the stock price, and trigger other regulatory steps that affect trading and governance.

early warning report regulatory

"also requires an early warning report to be filed with the applicable securities"

An early warning report is a regulatory filing that publicly discloses when an investor or insider has taken a large or potentially influential position in a company's shares or plans significant actions with those shares. It matters to investors because it flags possible shifts in control, takeover attempts, or concentrated influence—like a neighborhood notice that someone is buying several houses on the block—helping readers reassess risk, valuation, and trading strategy.

take-over bid regulatory

"The Early Warning System and Related Take-Over Bid and Insider Reporting Issues"

A take-over bid is a formal offer by a buyer to purchase shares of a company, often enough to gain control of it. Think of it like someone making a public offer to buy enough houses on a block so they control the neighborhood — it can push the target’s share price up, change who runs the business, and alter future dividends or strategy, so investors care because it affects the value and control of their holdings.

SEDAR+ regulatory

"A copy of the early warning report of IsoEnergy will be available under PUR's profile on SEDAR+"

SEDAR+ is Canada’s centralized online system where publicly traded companies submit required regulatory documents such as financial reports, prospectuses and disclosure statements. It gives investors a single, searchable place — like a public library or online filing cabinet — to check a company’s official records for transparency, compare performance, and verify material information before making investment decisions.

AI-generated analysis. Not financial advice.

TORONTO, Dec. 30, 2025 /PRNewswire/ - IsoEnergy Ltd. ("IsoEnergy", or the "Company") (NYSE American: ISOU) (TSX: ISO) is pleased to announce that it has acquired (the "Transaction") 2,135,760 common shares (the "PUR Common Shares") of Premier American Uranium Inc. ("PUR") and warrants to acquire an additional 2,708,627 PUR Shares in consideration for the issuance of an aggregate of 100,000 common shares of the Company (the "ISO Shares"). The ISO Shares were issued at a deemed price of $11.58 per share, representing aggregate consideration of $1,158,000.

Philip Williams, CEO and Director of IsoEnergy, commented, "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. 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."

Immediately prior to the completion of the Transaction, the Company owned an aggregate of 4,245,841 PUR Common Shares and warrants to acquire 167,708 PUR Common Shares, representing approximately 6.27% of the outstanding PUR Common Shares on a non-diluted basis and approximately 6.50% of the outstanding PUR Common Shares on a partially-diluted basis assuming exercise of all of the warrants held by the Company  (before giving effect to the conversion of the compressed shares of PUR (the "Compressed Shares")). Assuming the conversion of all of the issued and outstanding Compressed Shares into PUR Common Shares, the PUR Common Shares and warrants held by the Company represented approximately 5.38% of the PUR Common Shares on a non-diluted basis and approximately 5.58% of the outstanding PUR Common Shares on partially-diluted basis assuming exercise of the warrants held by the Company.  

Following completion of the Transaction, the Company owns an aggregate of 6,381,601 PUR Common Shares and warrants to acquire an aggregate of 2,876,335 PUR Common Shares, representing approximately 9.42% of the outstanding PUR Common Shares on a non-diluted basis and approximately 13.11% of the outstanding PUR Common Shares on a partially-diluted basis assuming exercise of all of the warrants held by the Company (before giving effect to the conversion of the Compressed Shares). Assuming the conversion of all of the issued and outstanding Compressed Shares into PUR Common Shares, the PUR Common Shares and warrants held by the Company represent approximately 8.09% of the PUR Common Shares on a non-diluted basis and approximately 11.32% of the outstanding PUR Common Shares on partially-diluted basis assuming exercise of the warrants held by the Company.

The securities of PUR held by IsoEnergy are held for investment purposes. Although IsoEnergy has no current plans with respect to the securities, depending on market conditions, general economic and industry conditions, trading prices of PUR's securities, PUR's business, financial condition and prospects and/or other relevant factors, IsoEnergy may develop such plans or intentions in the future and, at such time, may from time to time acquire additional securities, dispose of some or all of the existing or additional securities or may continue to hold securities of PUR.

This news release is issued pursuant to National Instrument 62-103 – The Early Warning System and Related Take-Over Bid and Insider Reporting Issues, which also requires an early warning report to be filed with the applicable securities regulators containing additional information with respect to the foregoing matters. A copy of the early warning report of IsoEnergy will be available under PUR's profile on SEDAR+ at www.sedarplus.ca. IsoEnergy's registered office is located at 217 Queen Street West, Toronto, ON M5V 0R2.

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.

X: @IsoEnergyLtd

www.isoenergy.ca

Cautionary Statement Regarding Forward-Looking Information

This press release contains forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995 and "forward-looking information" within the meaning of applicable Canadian securities legislation (collectively, referred to as "forward-looking information"). Generally, forward-looking information can be identified by the use of forward-looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". These forward-looking statements or information may relate to statements with respect to the activities, events or developments that the Company expects or anticipates will or may occur in the future, including, without limitation, the Company's potential plans with respect to the securities of PUR. Generally, but not always, forward-looking information and statements can be identified by the use of words such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", or "believes" or the negative connotation thereof or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" or the negative connotation thereof.

Forward-looking statements are necessarily based upon a number of assumptions that, while considered reasonable by management at the time, are inherently subject to business, market and economic risks, uncertainties and contingencies that may cause actual results, performance or achievements to be materially different from those expressed or implied by forward-looking statements. Such assumptions include, but are not limited to, assumptions that the results of planned exploration activities are as anticipated; the anticipated mineralization of IsoEnergy's projects being consistent with expectations and the potential benefits from such projects and any upside from such projects; the price of uranium; that general business and economic conditions will not change in a materially adverse manner; that financing will be available if and when needed and on reasonable terms; that third party contractors, equipment and supplies and governmental and other approvals required to conduct the Company's planned activities will be available on reasonable terms and in a timely manner. Although IsoEnergy has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking information.

Such statements represent the current views of IsoEnergy with respect to future events and are necessarily based upon a number of assumptions and estimates that, while considered reasonable by IsoEnergy, are inherently subject to significant business, economic, competitive, political and social risks, contingencies and uncertainties. Risks and uncertainties include, but are not limited to the following: negative operating cash flow and dependence on third party financing; uncertainty of additional financing; no known mineral reserves; aboriginal title and consultation issues; reliance on key management and other personnel; actual results of exploration activities being different than anticipated; changes in exploration programs based upon results; availability of third party contractors; availability of equipment and supplies; failure of equipment to operate as anticipated; accidents, effects of weather and other natural phenomena; other environmental risks; changes in laws and regulations; regulatory determinations and delays; stock market conditions generally; demand, supply and pricing for uranium; other risks associated with the mineral exploration industry, and general economic and political conditions in Canada, the United States and other jurisdictions where the Company conducts business. Other factors which could materially affect such forward-looking information are described in the risk factors in IsoEnergy's most recent annual management's discussion and analysis and annual information form and IsoEnergy's other filings with the securities regulators which are available under the Company's profile on SEDAR+ at www.sedarplus.ca and and on EDGAR at www.sec.gov. IsoEnergy does not undertake to update any forward-looking information, except in accordance with applicable securities laws.

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SOURCE IsoEnergy Ltd.

FAQ

What did IsoEnergy announce on December 30, 2025 regarding PUR (ISOU)?

IsoEnergy purchased 2,135,760 PUR shares plus warrants to buy 2,708,627 shares in exchange for 100,000 IsoEnergy shares valued at $11.58 each (total $1,158,000).

How large is IsoEnergy's ownership stake in Premier American Uranium after the transaction?

After the deal IsoEnergy holds 6,381,601 PUR shares and warrants to acquire 2,876,335 shares, ~9.42% non-diluted and ~13.11% partially-diluted.

Does conversion of compressed PUR shares affect IsoEnergy's ownership percentage?

Yes; assuming conversion of all compressed PUR shares, IsoEnergy's stake would be ~8.09% non-diluted and ~11.32% partially-diluted.

How much did IsoEnergy pay in total consideration for the PUR securities on Dec 30, 2025?

Total deemed consideration was $1,158,000, based on issuance of 100,000 IsoEnergy shares at $11.58 per share.

Are IsoEnergy's PUR securities held for strategic purposes or investment?

The release states the PUR securities are held for investment purposes, with no current specific plans announced.