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IsoEnergy Receives Conditional Approval to Graduate to the Toronto Stock Exchange and Announces Corporate Update

Listings & Exchange

IsoEnergy Receives Conditional Approval to Graduate to the Toronto Stock Exchange

and Announces Corporate Update

Saskatoon, SK, June 21 , 2024 – IsoEnergy Ltd. (“IsoEnergy” or the “Company”) (TSXV: ISO; OTCQX:

ISENF) is pleased to announce that it has received conditional approval from the Toronto Stock Exchange

(the “TSX”) to graduate from the TSX Venture Exchange (the “ TSXV”) and to list its common shares ( the

“Common Shares”) on the TSX.

Final approval of the listing is subject to the Company meeting certain customary conditions required by

the TSX. Upon receipt of the final TSX approval, the Common Shares will be delisted from the TSXV and

commence trading on the TSX under the symbol “ISO”. The Company will issue a press release once it has

confirmed the date when trading of the Common Shares is expected to commence on the TSX.

Shareholders are not required to exchange their share certificates or direct registration system advices,

or take any other action in connection with the listing on the TSX, as there will be no change in the trading

symbol or CUSIP for the Common Shares.

Corporate Update

The Company is also pleased to announce that , effective June 20, 2024, the Company filed articles of

continuance to continue from the Province of British Columbia into the Province of Ontario. Shareholders

of the Company approved the continuance at the Company’s annual general and special meeting of

shareholders held on May 22, 2024. Shareholders are not required to take any action in connection with

the continuance.

As previously announced on June 4, 2024 , t he Company has entered into a definitive agreement in

connection with the proposed acquisition of the Bulyea River project (the “ Project”) located on the

northern edge of the Athabasca Basin (the “ Bulyea River Acquisition”). The Project is host to very high

uranium in lake sediment within a strong airborne radiometric anomaly and represents a shallow

basement-hosted target.

Pursuant to an agreement dated May 29, 2024, IsoEnergy has agreed to acquire all of the outstanding

shares of 2596190 Alberta Ltd., a wholly -owned subsidiary of Critical Path Minerals Corp (the “Vendor”)

which holds a 100% interest in the ~13,000 hectare Project for consideration comprised of:

• On closing, C$150,000 in cash;

• On or before the 1st anniversary of closing, C$200,000 in cash or Common Shares or a combination

thereof at the election of the Company;

• On or before the 2 nd anniversary of closing , C$300,000 in cash or Common Shares or a

combination thereof at the election of the Company;

• On or before the 3rd anniversary of closing, C$350,000 in cash or Common Shares or a combination

thereof at the election of the Company;

• Minimum expenditures of C$2.0 million to be incurred within 36 months of closing;

• Within 30 days after a published technical report containing a current mineral resource estimate

on the Project, C$1.0 million payable in cash or Common Shares or a combination thereof at the

election of the Company; and

• A 2% net smelter returns royalty payable by the Company to the Vendor with respect to

production from the Project . IsoEnergy has the right to repurchase 1% of the royalty by paying

the amount of C$1.0 million in cash.

The agreement includes provision for the return of the Project to the Vendor in the event that the

Company does not make the anniversary payments as described above.

Closing of the Bulyea River Acquisition is subject to satisfaction of certain customary closing conditions

including, among other things, approval of the TSXV. Any Common Shares issuable pursuant to the Bulyea

River Acquisition will be subject to a hold period expiring four months and one day from the date of

issuance. There are no finders’ fees payable in connection with the acquisition and Critical Path Minerals

Corp., and 2596190 Alberta Ltd. are arms-length parties with respect to the Company.

About IsoEnergy Ltd.

IsoEnergy Ltd. (TSXV: ISO) (OTCQX: ISENF) is a leading, globally diversified uranium company with

substantial current and historical mineral resources in top uranium mining jurisdictions of Canada, the

U.S., Australia, and Argentina at varying stages of de velopment, 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 Inc. These mines are currently on stand-

by, ready for rapid restart as market condition s permit, positioning IsoEnergy as a near -term uranium

producer.

For More Information, Please Contact:

Philip Williams

CEO and Director

[email protected]

1-833-572-2333

X: @IsoEnergyLtd

www.isoenergy.ca

Neither the TSX Venture Exchange nor its Regulations Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Forward-Looking Information

The information contained herein 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. “Forward-looking information” includes, but is not

limited 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 satisfaction of the TSX’s listing

requirements; receipt of final TSX approval; the delisting of the Common Shares from the TSXV and the

commencement of trading on the TSX; closing of the Bulyea River Acquisition; and other activities, events

or developments that the Company expects or anticipates will or may occur in the future; . 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 connotati on 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.

Such forward-looking information and statements are based on numerous assumptions, including among

others, that the Company will be able to satisfy the listing requirements of the TSX, that the conditions to

closing of the Bulyea River Acquisition will be satisfied, including receipt of TSXV approval, that that general

business and economic conditions will not change in a material adverse manner, that financing will be

available if and when needed and on reasonable terms, that third party contractors, equip ment and

supplies and governmental and other approvals required to conduct the Company’s planned exploration

activities will be available on reasonable terms and in a timely manner. Although the assumptions made

by the Company in providing forward -looking information or making forward -looking statements are

considered reasonable by management at the time, there can be no assurance that such assumptions will

prove to be accurate.

Forward-looking information and statements also involve known and unknown risks and uncertainties and

other factors, which may cause actual events or results in future periods to differ materially from any

projections of future events or results expressed or implied by such forward -looking information or

statements, including, among others: the failure to satisfy the TSX listing requirements and obtain final

TSX approval for listing of the Common Shares, changes in the timing and process for delisting the Common

Shares from the TSXV and listing on the TSX , the failure to satisfy the conditions to closing of the Bulyea

River Acquisition, including receipt of TSXV approval, negative operating cash flow and dependence on

third party financing, uncertainty of additional financing, no known mineral reserves, the influence of a

large shareholder, alternative sources of energy and uranium prices, 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 and other risks associated with the mineral

exploration industry, environmental risks, changes in laws and regulations, community relations and

delays in obtaining governmental or other approvals and the risk factors with respect to the Company set

out in the Company’s filings with the Canadian securities regulators and available under IsoEnergy’s profile

on SEDAR+ at www.sedarplus.ca.

Although the Company has attempted to identify important factors that could cause actual results to differ

materially from those contained in the forward -looking information or implied by 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 forward-looking information and statements will prove to be accurate, as

actual results and future events could differ materially from those anticipated, estimated or in tended.

Accordingly, readers should not place undue reliance on forward-looking statements or information. The

Company undertakes no obligation to update or reissue forward -looking information as a result of new

information or events except as required by applicable securities laws.