Purepoint and IsoEnergy Joint Venture Approves 2026 Program to Advance the Nova Discovery at the Dorado Project

Toronto, December 4, 2025 - Purepoint Uranium Group Inc. (TSXV: PTU) (OTCQB: PTUUF) today announced that the Purepoint and IsoEnergy Joint Venture has approved an expanded exploration program for 2026 following strong results from this year's drilling at the Dorado Project. The Nova discovery ("Nova Discovery" or "Nova") returned uranium grades up to 8.1% U₃O₈ over 0.4 metre within 2.1 metres of 1.6% U₃O₈ in hole PG25-07A confirming a steeply dipping uranium bearing structure that remains open in all directions (see news release dated September 18, 2025).

"The joint venture's approval of the 2026 program reflects the significance of the Nova Discovery," said Chris Frostad, President and CEO of Purepoint Uranium Group. "Each step out delivered stronger mineralization, and the open northeastern extension has become our priority. The coming year allows us to advance Nova with purpose and begin evaluating additional high priority zones across the Dorado Project."

Highlights:

• The joint venture approved a dedicated exploration program to advance the Dorado Project (Figure 4) following up on this year's Nova Discovery which returned assays of 8.1% U₃O₈ over 0.4 metre within 2.1 metres of 1.6% U₃O₈
• The approved program includes 17 holes totalling 7,450 metres across winter and summer campaigns
  • Winter 2026 drill program (January - March) will focus on expanding Nova with 10 holes totalling approximately 4,300 metres
  • District-scale summer 2026 drill campaign (July - August) will test priority targets with 7 holes totalling approximately 3,150 metres
• Airborne magnetotellurics survey is planned for late winter or spring
• Winter access and wetland drill pads will be established this month including 8 km of existing trail and 10 km of new trail construction

Program Summary

Winter 2026 - Nova Expansion

The winter drill program aims to advance the Nova Discovery with 10 skidder supported drill holes totaling 4,300 metres. Drilling will initially focus on the corridor between PG25-03 and PG25-07A, a distance of 800 metres, with 30 to 50 metre step outs to the northeast where the strongest mineralization was encountered. The Nova mineralization remains open in all directions.

Airborne Magnetotellurics (MT) Survey

A late winter or spring MT survey will be completed across the Serin, Laysan, Turaco, Q40, Q2 and Q48 grids to refine deeper structural targets.

Summer 2026 - District Scale Drilling Across the Dorado Project

A helicopter supported drill program of 7 holes totaling 3,150 metres will be undertaken in July and August to test conductive and structural targets across the Q23, Q24, Turaco, Laysan and Q40 grids.

The Summer program will be subject to change pending winter drill results.

Figure 1: Dorado Joint Venture Project

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* See Qualified Person Statement below.

Figure 2: Location Map of 2025 Drill Program at Q48 Target Area and the new Nova Discovery

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Figure 3: Vertical Longitudinal Section of the Nova Discovery

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About the Dorado Project

The Dorado Project (Figure 1) is the flagship project of the IsoEnergy-Purepoint 50/50 joint venture, a partnership encompassing more than 98,000 hectares of prime uranium exploration ground. The Dorado Project includes the former Turnor Lake, Geiger, Edge, and Full Moon properties, all underlain by graphite-bearing lithologies and fault structures favorable for uranium deposition.

Recent drilling by IsoEnergy east of the Hurricane Deposit has intersected strongly elevated radioactivity in multiple holes. The anomalous radioactivity confirms the continuity of the fertile graphitic rock package and further highlights the opportunity for additional high-grade discoveries across the region.

The shallow unconformity depths across the Dorado Project property-typically between 30 and 300 metres-allow for highly efficient drilling and rapid follow-up on results.

Figure 4: IsoEnergy and Purepoint Uranium Joint Venture including, Dorado Project, Aurora Project and Celeste Block

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* See Qualified Person Statement below.

Qualified Person Statement

The scientific and technical information contained in this news release relating to Purepoint was reviewed and approved by Scott Frostad BSc, MASc, P.Geo., Purepoint's Vice President, Exploration, who is a "Qualified Person" (as defined in NI 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101")).

About Purepoint

Purepoint Uranium Group Inc. (TSXV: PTU) (OTCQB: PTUUF) is a focused explorer with a dynamic portfolio of advanced projects within the renowned Athabasca Basin in Canada. Highly prospective uranium projects are actively operated on behalf of partnerships with industry leaders including Cameco Corporation, Orano Canada Inc. and IsoEnergy Ltd.

Additionally, the Company holds a promising VMS project currently optioned to and strategically positioned adjacent to and on trend with Foran Mining Corp.'s McIlvenna Bay project. Through a robust and proactive exploration strategy, Purepoint is solidifying its position as a leading explorer in one of the globe's most significant uranium districts.

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Neither the Exchange nor its Regulation Services Provider (as that term is defined in the policies of the Exchange) accepts responsibility for the adequacy or accuracy of this Press release.

Cautionary Statement Regarding Forward-Looking Information

This press release contains "forward-looking information" within the meaning of applicable Canadian securities legislation. 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". This forward-looking information may relate to additional planned exploration activities, including the timing thereof and the anticipated results thereof; and any other activities, events or developments that the companies expect or anticipate will or may occur in the future.

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, that planned exploration activities are completed as anticipated; the anticipated costs of planned exploration activities, 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; and that third party contractors, equipment and supplies and governmental and other approvals required to conduct the Joint Venture's planned activities will be available on reasonable terms and in a timely manner. Although each of IsoEnergy and Purepoint have 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 and Purepoint with respect to future events and are necessarily based upon a number of assumptions and estimates that, while considered reasonable by IsoEnergy and Purepoint, 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: the inability of the Joint Venture to complete the exploration activities as currently contemplated; ; uncertainty of additional financing; no known mineral resources or reserves; aboriginal title and consultation issues; reliance on key management and other personnel; actual results of technical work programs and technical and economic assessments being different than anticipated; regulatory determinations and delays; stock market conditions generally; demand, supply and pricing for uranium; and general economic and political conditions. Other factors which could materially affect such forward-looking information are described in the risk factors in each of IsoEnergy's and Purepoint's most recent annual management's discussion and analyses or annual information forms and IsoEnergy's and Purepoint's other filings with the Canadian securities regulators which are available, respectively, on each company's profile on SEDAR+ at www.sedarplus.ca. IsoEnergy and Purepoint do not undertake to update any forward-looking information, except in accordance with applicable securities laws.

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