Mr. Thomas Lamb reports

MYRIAD URANIUM COMMENCES PHASE II DRILLING AT COPPER MOUNTAIN

Myriad Uranium Corp. has commenced phase II drilling at the Copper Mountain uranium project in Wyoming.

Highlights:

• Phase II drilling is now under way at the Copper Mountain uranium project in Wyoming. The first four holes will test mineralization at Lucky Cliff, a high-priority target area drilled by Union Pacific in the late 1970s and never followed up with modern techniques.
• Any mineralization confirmed at Lucky Cliff will be outside the 1982 U.S. Department of Energy Bendix Field Engineering Corp. engineering report assessment area previously reported.
• Once the holes at Lucky Cliff are complete, the phase II program will turn to drilling areas, other than Canning, that are associated with historical resource estimates totalling 26.63 million pounds eU3O8 (equivalent triuranium octoxide) contained in 44.1 million tonnes at an average grade of 171 parts per million eU3O8, which are not being treated as current mineral resources or mineral reserves (see note about historical estimates below).
• Canning contains roughly half of the historically estimated resources at Copper Mountain and was the focus of Myriad's highly successful 34-hole phase I drill program in late 2024.
• Phase II will also test new targets identified by the company's recent geophysics, which have undergone verification by ground truthing using a hand-held gamma spectrometer.
• The final stage of phase II will be infill drilling to support a current mineral resource estimate under NI 43-101.
• In 1982, Bendix Engineering for the U.S. Department of Energy reported an exploration target for Copper Mountain of 245 million to 655 million pounds eU3O8 contained within 1,111 million tonnes to 2,971 million tonnes (at 100 parts per million eU3O8) and 222 million to 594 million tonnes (at 500 parts per million eU3O8).

The potential tonnages and grades of the Bendix exploration target are conceptual in nature and are based on previous drill results and there has been insufficient exploration to define a current mineral resource, and it is uncertain if further exploration will result in the target being delineated as a mineral resource. See the section titled "Copper Mountain exploration target" below for more details.

Myriad's chief executive officer, Thomas Lamb, commented: "Our aim for phase II drilling will be to confirm mineralization, not just at the historically estimated areas of Copper Mountain, but also at entirely new targets identified through our successful geophysics programs and subsequent ground truthing. We also hope that phase II, once complete, will provide support for a compelling current mineral resource estimate."

Mr. Lamb continued: "Beyond phase II drilling, Myriad has a fast-moving and exciting 12 months ahead:

• "Our merger with Rush is in the final steps of completion and will consolidate 100-per-cent ownership of Copper Mountain. This will have many benefits, including increasing our market cap, attracting institutional investor interest, simplifying operational decision making and broadening access to financing.
• "We plan to uplist to a major U.S. exchange.
• "8VC-backed Subatomic will be advancing the Red Basin [New Mexico] project, in which we hold a 10-per-cent free carried interest [...].
• "Exploration of our Breccia Pipe project in Arizona, which includes the Wate pipe's high-grade historical resource estimate, will commence [...]."

Nasco Industrial Services and Supply (NISS) has deployed a Boart Longyear LF90D surface diamond core drill rig to Copper Mountain. The LF90D is a powerful, highly mobile surface diamond core drill rig known for its deep coring capacity and reliable hydraulic systems. It features a telescopic mast designed for both three-metre (10-foot) and six-metre (20-foot) rod pulls.

Lucky Cliff

Lucky Cliff is located about 2,000 metres (6,500 feet) north of the Canning deposit, along the Myrtle's Fault trend. The target area was selected by Union Pacific as a drill target on the basis of favourable geological and geochemical criteria. Several strong N45 degrees E structural trends are present, and the associated rock types are similar to those found at other mineralized occurrences in the project area. A close-spaced (500-foot centre) stream sediment sampling program undertaken by Union Pacific identified several highly anomalous (to 118 parts per million) zones, and follow-up work was designed to test these anomalies. Ground-truthing of radiometric anomalies by Myriad following the helicopter survey completed late last year identified one point above the target area with a surface measurement of 193.2 parts per million equivalent uranium, using a calibrated RS-230 hand-held gamma-ray spectrometer. Hand-held spectrometer readings are preliminary and indicative only, may be affected by environmental and geometric factors, are not assay results, and may not be representative of uranium concentrations in rock samples.

At least 20 holes were drilled by Union Pacific in the late 1970s. At least 10 holes intersected mineralization in excess of 100 parts per million eU3O8 from depths as shallow as 20 feet (six metres). LK-9 intersected 355 feet of 0.027 per cent eU3O8 starting at 59 feet (including 207 feet of 0.032 per cent eU3O8). LK-11 intersected 31 feet of 0.020 per cent eU3O8 at 21.5 feet and 59.5 feet of 0.025 per cent eU3O8 at 83.5 feet. Other intersections in this target area included 15.5 feet of 0.055 per cent eU3O8 at 55 feet in hole LK-10. Higher grades are associated with a mafic dike intruding the main fault zone through the target area. There is no historic resource estimate for Lucky Cliff. Reported widths are historical downhole widths and true widths are unknown. Equivalent uranium grades were determined by AEC gamma probes using appropriate calibration factors. No original assay certificates or complete quality assurance/quality control records have been reviewed by the company or the qualified person for these historical drill results.

Copper Mountain exploration target

In 1982, Bendix Field Engineering identified an exploration target of 245 million to 655 million pounds eU3O8 contained within 1,111 million to 2,971 million tonnes (at 100 parts per million eU3O8) and 222 million to 594 million tonnes (at 500 parts per million eU3O8). This was based on previous exploration on the property by Union Pacific Corp. and Bendix's own work, including data from over 1,370 historic drill holes. The exploration target and methodology were detailed in two reports by Bendix titled "An Exploration Systems Approach to the Copper Mountain Area Uranium Deposits, Central Wyoming (September, 1982)" and "Copper Fountain, Wyoming, Intermediate-Grade Uranium Resource Assessment Project Final Report (September, 1982)", respectively. The exploration target potential was derived from geologic reconnaissance and geochemical, geophysical, petrologic, borehole and structural data interpretations that were used to develop a genetic model for uranium mineralization in these environments. Development of a structural scoring system and application of models in a high-confidence control area established the basis for estimations of the uranium target in the total assessment area covering approximately 39.6 square miles. The volume of the modelled areas determines the potential tonnage statement in the exploration target. The grade range given in the exploration target is determined with consideration to the drill results within the modelled exploration target area and consideration of the geological setting in an established exploration camp. The potential tonnages and grades are conceptual in nature and are based on previous drill results that defined the approximate length, thickness, depth and grade of the portion of the historic mineral resource estimate. There has been insufficient exploration to define a current mineral resource, and it is uncertain if further exploration will result in the target being delineated as a mineral resource. Further details are available in the current National Instrument 43-101 technical report.

Historical resource estimates

The historically estimated resources totalling 26.6 million pounds eU3O8 contained in 44.1 million tonnes at an average grade of 171 parts per million eU3O8 (using a 100-part-per-million cut-off) were compiled from internal progress reports produced by Union Pacific subsidiary, Rocky Mountain Energy Company. In particular, a report titled "Copper Mountain Exploration Project Report" was prepared by G.G. Southard et. al. (1979) for Rocky Mountain Energy Company. The estimates were completed using polygonal methods based on modelled mineralization geometries. The historic resources were classified as inferred and indicated using U.S. Bureau of Mines categories at the time and do not necessarily correspond with the resource categories defined by current NI 43-101 definitions and guidelines. Details of the historical resource estimates are available in the current NI 43-101 technical report.

While Myriad Uranium has determined that the historical estimates described in this news release are relevant to the Copper Mountain project area and are reasonably reliable given the authors and circumstances of their preparation and are suitable for public disclosure, readers are cautioned to not place undue reliance on these historical estimates as an indicator of current mineral resources or mineral reserves at the project area. A qualified person (as defined under NI 43-101) has not done sufficient work to classify any of the historical estimates as current mineral resources or mineral reserves, and Myriad Uranium is not treating the historical estimates as a current mineral resource or mineral reserve. Also, while the Copper Mountain project area contains all or most of each deposit referred to, some of the resources referred to may be located outside the current Copper Mountain project area. Furthermore, the estimates are decades old and based on drilling data for which the logs are, as of yet, predominantly unavailable. The historical resource estimates, therefore, should not be unduly relied upon.

Inherent limitations of the historical estimates include that the nature of mineralization (fracture hosted) makes estimation from drill data less reliable than other deposit types (for example, those that are thick and uniform). From Myriad Uranium's viewpoint, limitations include that the company has not been able to verify the original data by itself and that the estimates may be optimistic relative to subsequent work which applied a delayed fission neutron (DFN) factor to calculate grades. On the other hand, DFN is controversial, in that the approach is viewed by some experts as too conservative. Nevertheless, it was applied in later resource estimations by Union Pacific relating to Copper Mountain. To verify the historical estimates and restate them as current resources, a program of redrilling is required to generate new data that can be used to establish the correlation and continuity of geology and grades between boreholes with sufficient confidence to estimate mineral resources.

Qualified person

The scientific and technical information in this news release has been reviewed and approved by George van der Walt, MSc, PrSciNat, FGSSA, a qualified person as defined under NI 43-101. Mr. van der Walt is a principal consultant with The MSA Group Pty. Ltd., an independent consultancy. A qualified person has not done sufficient work to verify historic exploration results or to classify the historical estimates referred to in this news release as current mineral resources or mineral reserves, and Myriad is not treating such historical estimates as current mineral resources or mineral reserves.

About Myriad Uranium Corp.

Myriad Uranium holds a 75-per-cent interest in the Copper Mountain uranium project in Wyoming, United States, with a definitive agreement in place to acquire the remaining 25 per cent through the acquisition of Rush Rare Metals Corp. Copper Mountain hosts multiple historic uranium deposits and past-producing mines, including the Arrowhead mine (approximately 500,000 pounds U3O8 produced). Union Pacific conducted extensive exploration and development in the district during the late 1970s, including approximately 2,000 boreholes and advanced mine planning, before the uranium market downturn in 1980. Union Pacific is estimated to have invested approximately $125-million (2026 dollars) in the project, generating significant historical resource estimates.

A news release detailing a comprehensive assessment of Copper Mountain's uranium endowment by Bendix Engineering for the U.S. Department of Energy published in 1982 can be viewed on-line.

Myriad holds a 10-per-cent free carried interest in the Red Basin uranium project, recently sold to 8VC- and Overmatch-backed Subatomic Industries. Red Basin carries significant historical resource estimates from extensive drilling by Occidental Oil in the late 1970s and also hosts vanadium, which has been designated a strategic and critical mineral by the U.S. government. Note the caution on historical estimates below.

Myriad's 100-per-cent-owned Breccia Pipe project in Arizona comprises at least 23 breccia pipes that are prospective for uranium and REEs (rare earth elements). One of the pipes, the Wate pipe, was previously owned and explored by Energy Fuels and is the subject of a historical resource estimate. The Breccia Pipe project has been optioned to Wedgemount Resources.

Note: A qualified person has not done sufficient work to classify the Copper Mountain, Red Basin and Breccia Pipe historical estimates as current mineral resources or reserves and Myriad is not treating historical estimates as current resources or reserves. Myriad intends to conduct further work to determine whether the historical estimates can be verified and, if appropriate, supported by current mineral resource estimates.

We seek Safe Harbor.