• 100%-owned, 18,000+ acre land package with 7 historic deposits, 11 prospects with historic drilling, 10 additional targets with no historic drilling.
• This is the first time ownership of Copper Mountain has been consolidated in almost 50 years.
• Comprehensive U.S. Dept. of Energy report (Bendix, 1982) estimated an Exploration Target* of 1,111 to 2,971 Mt at 100 ppm eU3O8 or 222 to 594 Mt at 500 ppm eU3O8 potentially containing between 245 Mlbs (Control Area – 80% held) and 655 Mlbs (Assessment Area – 62% held).
• Access to infrastructure – the project is located within 5 km of regional rail, highway, and power lines.

• Historic drilling mainly targeted granite-related mineralization down to 600 feet (e.g. North Canning).
• But there is associated sedimentary mineralization (e.g. Arrowhead).
• And the possibility of roll-front mineralization in Tertiary sediments (e.g. Cedar Ridge).
• And also the possibility of deeper thrust/unconformityrelated
  mineralization (e.g. Railroad).

1950s-1960s

Legendary geologist and Myriad technical advisor Jim Davis discovers the Arrowhead Mine which, according to publicly available production records (United States Department of the Interior), produced ~500 klbs of uranium in the 1950’s and 1960’s.

1970s

Union Pacific drilled 2,000 boreholes discovering 7 deposits during the 70’s.

• They envisioned a conventional hub & spoke, 6-pit mine plan centered on the Canning deposit.
• They had designed a leach pad and had plans to commence mining in 1983, but dropped those plans in ~1980 after prices plummeted following Three Mile Island incident.
• Union Pacific estimated the potential of the 6-pit mine plan and additional targets (estimated and speculated) to be far higher.

Anaconda Copper drilled 19 boreholes into the Railroad Target area adjacent to Union Pacific’s Copper Mountain project.

• Intersected elevated mineralization at depth. Crucially tested for deeper mineralization associated with thrust faults.

1990s

Anaconda Uranium (no relation to Anaconda Copper) acquired all the historical data in the early 90’s and spent several years analyzing the data.

• They focused on an “Area of interest” at the Canning deposit.
• Two review reports (1991 and 1997) confirmed that Copper Mountain has substantial uranium mineralization with heap leach potential, and possibly an ISR option (not tested).
• Both recommended bulk sampling and testing as part of further work.

2006-2012

Neutron Energy & Strathmore both held parts of the Copper Mtn Project. Their ownership had divided Canning Deposit and most of the entire district.

Neutron Energy brought back geologist Jim Davis and re-evaluated all the historical data which was summarized in a 2008 technical report.

• Suggested the equivalent uranium grades used in the histori estimation were conservative and noted that fluorometric analyses suggested higher grades but were disregarded (Davis & Wilton, 2010).
• Myriad’s Phase I drilling results support this. Recommended various programs targeting several styles of mineralization.

• ~820 holes were drilled in the Canning deposit by Union Pacific, generally to a maximum depths of around 180 m.
• Contains bulk of historic mineralization identified by Union Pacific.
• Priority area contains higher average grades than the overall mineralized area.

• Focused on the priority target area, known to contain higher grades.
• 34 holes completed (RC and DD).
• Best grade interval: 5,337 ppm over 1.28 m from 68.7 m (CAN0004).
• Best GT interval: 4,361 ppm over 2.29 m from 80.9 m (CAN0006).

• Union Pacific relied on DFN probe data, which was considered conservative.
• 1970s fluorometric assays indicated that DFN probe could be underestimating grades, but the results were disregarded in favor of DFN probe data.
• Reported ICP-MS assay results show chemical grades superior to spectral gamma probe equivalents, and gaps may also contain significant unreported uranium mineralization.

• Assay grades 60% higher than eU O at 3 8 1,000 ppm cut-off.
• Assay grades 50% higher than eU3O8 at 500 ppm cut-off.
• Assay grades 20% higher than eU3O8 at 200 ppm cut-off.
• CAN0034 had a >250% improvement in grade from 344 ppm eU3O8 to 833 ppm U3O8 over 0.5 m at 454 m depth.

• Phase 1 drilling confirmed mineralization modelled from historic drilling data.
• Assay grades on average 20% – 60% higher than gamma probe grades.
• Myriad’s assays have increased shell volume versus previous gamma probe equivalent grades by 15%.

• 2,114 line-km magnetic and radiometric surveys completed (100 m line spacing, 30 m flying height).
• Coincident magnetic and radiometric anomalies with structures establish mineralisation controls.
• Confirms large extent of mineralisation potential. 140 radiometric anomaly points identified for follow-up investigation.
• Known historic resources are located west of major NS structure – eastern extent remains untested.

• Many new targets identified by radiometrics need to be followed up in the field.
• Midnight alone has 60 plus points identified by recent geophysics for follow up.

• Secondary uranium in granite outcrop near Midnight measuring over 100 times above background – confirms targeting.
• Next step: detailed ground-truthing with sampling, followed by
  drilling.

• The seven-deposit historical resource of 26.63 Mlbs mainly hosted in granite – drilled to a depth of ~180 m.
• The Bendix report defined many targets with granite endowment.
• Our geophysics identified radiometric anomaly areas where ground truthing has confirmed near-surface mineralization.

• Sedimentary hosted uranium was mined at the Arrowhead deposit in the 1950’s.
• Union Pacific identified potential rollfront mineralization at Cedar Ridge that could be ammenable to ISR.
• The Bendix report defined targets with Sedimentary endowment.

• Phase II will commence with a two-stage drill program totaling approximately 5,000 metres.
• Current cash on hand will allow Myriad to rapidly advance beyond the initial two stages of the Phase II program.

OBJECTIVE: DEFINE A PATH TO RESOURCES

• Verify mineralization that underpins the historical estimate of 26.63 Mlb eU3O8 and generate modern data to support a future maiden mineral resource estimate*.

OBJECTIVE: UNLOCK DISTRICT POTENTIAL

• Evaluate exploration upside by testing historical targets identified through drilling in the 1970s, while also assessing Myriad-driven targets.

• Myriad earned a 100% interest in Copper Mountain by spending over $5.5 million on eligible expenditures under the property option agreement under with Rush Rare Metals.
• Myriad has almost doubled its land position to include the historically-defined deposits and targets in the district.

• Acquire data relating to the US$86 million in historic spend (2024$) at the project.
  “Myriad Transformed as Data Trove Reveals Significant Historical Uranium Resources at Copper Mountain” – Oct 2023 news release.

• Confirm historically reported mineralization with Fall 2024 maiden drill program.
• Focus on the Canning deposit which was the cornerstone of Union Pacific’s 6-pit mine plan.

• Report upcoming chemical assays from gap sampling; assimilate new uranium endowment estimates from Bendix (up to 656 Mlbs*).
• Drill at other targets around Copper Mountain to confirm the broader potential of the district.
• Continue testing deeper zones below historical 175m general maximum depth of drilling.

a) The estimates completed by Fluor Mining and Metals Inc. (Fluor), May 20, 1980 are cited in several reports post-dating the estimate, including the most recent reference in a NI 43-101 Technical Report by Carter, G.S. (August 20, 2008) titled “Technical Report on the Uranium Resources at The Copper Mountain Project, Fremont County, Wyoming, U.S.A., on behalf of Neutron Energy Inc.” issued by Broad Oak Associates. The estimates for the Gem deposit and past-producing Arrowhead uranium mine deposits were completed by Rocky Mountain Energy Corp. in 1977 and cited in report titled “Copper Mountain Exploration Project Report by Southard, G.G., Morton, D.K., Gordon. J.H. and Schledewitz, D.C., RMEC (December 1979).

b) The historical estimates are based on data and reports prepared by previous operators. This included data from over 900,000 feet of hammer tool and core drilling. The descriptions of core drilling and core handling procedures, sample preparation and analysis, and procedures for statistical correlation of various assay methods are all presented in the reports and are considered appropriate. Based on the amount and quality of historic work completed, the information is considered relevant and reliable. This view is supported by earlier reviewers of the data and methodology, including David S. Robertson & Associates Inc. (1978) and Golder Associates (1979), who concluded that the core and sample handling techniques from the field through the sample preparation facility were in “accordance with good engineering practice”. However, the resultant gamma logs and core assays that supported the estimations and associated technical work were not available to the Qualified Person, therefore a complete and thorough review of the data has not been possible.

c) Earlier estimates by Rocky Mountain Energy Corp. (1977) used the polygonal estimation method based on ten-foot composite thicknesses and 0.010% U 0 cut-off using gamma probe grades with a tonnage factor 12 cubic ft/ton. During an estimate update (most recent), Fluor (1980) investigated various resource estimation techniques. including polygonal methods, cross-sectional methods, ordinary kriging, and a method using conditional lognormal probability distributions, which was the chosen method. The key difference between the earlier RMEC estimates and those of Fluor was the use of core-equivalent Delayed Fission Neutron (DFN) grades using a correction formula derived from comparison between probe grades and DFN grades, that were accepted by RMEC as the most accurate determination of grade at the time.

d) At the time of reporting, RMEC and Fluor used the U.S. Bureau of Mines resource categories, which were classified as follows: Measured Resources – projected one-half the distance toward the nearest control (i.e. another drill hole) or a maximum of 15 metres (50 feet), whichever occurred first. If correlateable mineral was not in the adjacent control or no adjacent control existed, a maximum of 7.5 metres (25 feet) of projection was allowed (a variance of 1.5 to 3.0 metres (5 to 10 feet) between controls above the maximum was excepted in a few cases). Indicated Resources – any mineral intercept at or above the cut-offs stated was considered to be at least of Indicated categorization. Isolated holes (i.e. those positioned greater than 30 metres (100 feet) from adjacent holes) were allowed a maximum projection of 7.5 metres (25 feet) to the center of the side of a square (a maximum area of influence = 25 ft. x 25 ft. or 625 square feet.). Between drill control, where correlations were feasible, but limits exceeded those for Measured categorization, Indicated Resources were extended and projected one-half of the remaining distance or 7.5 metres (25 feet) beyond Measured if correlation to adjacent control was not feasible. Inferred Resources – mineralization projected beyond the Measured and Indicated resource limits in areas bounded by surrounding drill control were categorized as Inferred. Grades and thicknesses of these areas were determined by averaging the intercepts from surrounding control. Inferred resources were projected to distances ranging from 7.5 to 365 metres (25 to 1200 feet). These categories, or the application thereof, are not necessarily compatible with current definitions. The “most likely mineable reserves” estimated by RMEC at the time would be categorized as Indicated and Inferred resources, in accordance with definitions of the CIM Definition Standards for Mineral Resources & Mineral Reserves (2014). The portions of the “reserves” (approximately 20 to 60%) that were drilled on 15 to 30 metre (50 to 100 foot) centres, and normally would be classified as Measured resources, are equated to Indicated resources, because of the nature of the mineralization, uncertainty regarding the grades and the lack of established economic viability of the deposits at the time. The remaining portions of the “reserves” drilled on 30 to 60 metre (100 to 200 foot) centers, are classified as Inferred resources. An attempt to separate the indicated from the inferred resources was not possible from the available information. 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.

e) There are no more recent estimates reported.

f) In order to verify the historical resources and potentially re-state them as current resources, a program of digitization of data is required (to the extent possible), followed by re-logging and/or re-drilling to generate new data that is comparable with the original data that can be used to establish the correlation and continuity of geology and grades between boreholes with sufficient confidence to estimate mineral resources.

g) A qualified person has not done sufficient work to classify the historical estimate as current mineral resources or mineral reserves; and Myriad Uranium is not treating the historical estimate as current mineral resources or mineral reserves.

Myriad’s 2024 Drilling Drilling was undertaken by Harris Exploration using two diamond core (DD) rigs producing HQ (63.5 mm / 2.5 in) core diameter and 96 mm (3.78 in) in hole diameter, and one reverse circulation (RC) rig using a 140 mm (5.5 in) hammer bit. Core samples were packed into core trays and transported to Riverton for further processing. RC hole runs were drilled at 5 ft intervals and split on site by a rig-mounted cyclone splitter to produce two representative samples that were then transported to Riverton for further processing. Refer to the website (www.myriaduranium.com) for details about the drilling locations (news release June 11, 2025 titled “Myriad Uranium Reports Final Chemical Assays from Copper Mountain…”).

Downhole Logging Downhole logging was performed by DGI Geoscience (DGI) using a combination of Spectral Gamma Ray (SGR) probe for gamma data, and Optical Televiewer and/or Acoustic Televiewer for structural data. The probes are manufactured by Mount Sopris Instruments with details as follows:

– QL40 SGR BGO (Sx): Measures the energy of gamma emissions from natural sources within formations crossed by a borehole. It counts the number of gamma emissions at each energy level aiding in lithological determination and correlation. The Probe use a Bismuth Germanium Oxide scintillation crystal.

– QL40 SGR 2G CeBr3 (Sx): Measures the energy of gamma emissions from natural sources within formations crossed by a borehole. It counts the number of gamma emissions at each energy level aiding in lithological determination and correlation. The probe uses a CeBr3 (Cerium Bromide) scintillation crystal.

– QL 40 ABI 2G (At, Gr): Captures high-resolution, oriented images of the borehole wall, allowing the orientation of acoustically visible features to be determined. This includes fractures, bedding/rock fabric, breakouts, bedding planes and other structural features. Contains a built in Natural Gamma sensor that measures the gamma emissions from natural sources in the formation.

– QL OBI 2G (Ot, Gr): Captures a high-resolution, oriented image of the borehole wall using a CMOS digital image sensor, allowing the orientation of features to be determined. This includes fractures, bedding/rock fabric, veins, lithological contacts, etc. Contains a built in Natural Gamma sensor that measures the gamma emissions from natural sources in the formation.

The spectral gamma probes measure the full energy spectrum of the gamma radiation emitted naturally from within the formations crossed by a borehole. A Full Spectrum Analysis (FSA) was performed on the recorded energy spectra. The FSA derived, in real time, the concentration of the three main radioisotopes K, U, Th, and thus also provided insight into the mineral composition of the formations. DGI also ran optical and acoustic televiewer, when hole conditions allow, to obtain downhole structural information. Borehole paths are being measured using a gyroscopic deviation tool. Initial manufacturer calibration certificates were provided to Myriad by DGI. Downhole gamma measurements were checked for a repeatability by comparing down and up runs in the borehole. DGI provided conversion of API units measured by the spectral gamma probes to eU O concentrations using a standard conversion theory and formula.

Geological Logging, Sampling and Analysis Description of geological features (lithology, structure and alteration) was undertaken prior to sampling according to standardized logging templates. Core sampling intervals were selected primarily on the basis of lithological changes and in conjunction with radiometric intervals identified from the downhole spectral gamma probe measurements (using a 100-ppm cut-off). Core sample lengths are limited to a maximum of 3 feet and adjusted to a minimum of 1 foot, where appropriate, to capture significant features in the core. Reverse Circulation samples were collected and split at the rig in 5-foot intervals, with samples being selected based on downhole spectral gamma probe measurements (using a 100-ppm cut-off). Samples were prepared and analysed at Paragon Geochemical, located in Sparks, Nevada. Sample preparation involved inventory, weighing, drying at 100°C, crushing to 70% passing 10 mesh, riffle splitting 250 g and pulverizing to 85% passing 200 mesh. The requested sample analysis package for trace and ultra-trace level geochemistry was a Multi-Element Suite (48 elements) using a Multi Acid digest with ICP-MS.

Quality Assurance and Quality Control (QAQC) Quality Assurance was achieved by implementing a set of Standard Operating Procedures (SOP) for logging and sampling. Quality Control in sampling and analysis was achieved by insertion of Blanks, Standards (Certified Reference Materials) and laboratory split (Duplicates) at a minimum rate of 5% each. Inspection of QC data from the reported analyses shows adequate control of contamination and equipment calibration.

Radiometric Disequilibrium Radiometric disequilibrium refers to the loss or gain of uranium and/or its daughter products (e.g. radon-222, bismuth-214 and radium-226) in the mineralized zone during geologic processes, which can disrupt the equilibrium between the parent isotope and the daughter products. Some historic reports state that closed can assays from Copper Mountain indicated little disequilibrium, however differences between gamma probe data and chemical assay were still observed. From the analysis data received, and comparison with the downhole spectral gamma probe data, it is apparent that disequilibrium has occurred within the Canning deposit. Individual grades are often higher, or lower, than those previously reported by the spectral gamma probe, implying that uranium, or its daughter products, have been mobile in the system since initial deposition. The average ratio of chemical assay intervals to spectral gamma probe assay intervals is ~1.2, indicating uranium content to be biased towards higher grades in the chemical assays, by as much as 20% on average (at 200 ppm cut-off). It is unclear at this stage if the disequilibrium observed results from radon interference or leaching and remobilization of uranium or radium and other daughter products in the geological environment. Myriad will expand the physical sampling program to submit more samples to the laboratory to account for zones where higher uranium levels might be returned compared to lower levels of spectral gamma measurement. Additional high resolution spectral analyses of samples may also be required to determine the specific cause of disequilibrium within the system.

Geological Background Uranium mineralization at Copper Mountain occurs primarily in two distinct geologic environments:

– Fracture-controlled uranium mineralization hosted in Archaean-aged granite, syenite, isolated occurrences along the margins of diabase dikes and in association with meta-sediment inclusions in granite; and

– As disseminations in coarse-grained sandstones and coatings on cobbles and boulders in the Tertiary-aged Wagon Bed Formation at the Arrowhead (Little Mo) mine and other localities. Uranium mineralization is thought to have resulted through supergene and hydrothermal enrichment processes. In both cases, the source of the uranium is thought to be the granites of the Owl Creek Mountains.

Qualified Person The Qualified Person (QP), George van der Walt (Pr.Sci.Nat., FGSSA), Principal Consultant for The MSA Group (Pty) Ltd, prepared and approved the information in this written disclosure. The QP has verified the data disclosed, including sampling, analytical and QAQC data that underlies the information or opinions contained in the written disclosure. Data was verified through personal site visits to the project, as well as personal confirmation of drill hole locations and compilation mineralized intercepts.