Standard Uranium Ltd. (TSXV: STND,OTC:STTDF) (OTCQB: STTDF) (FSE: FWB:9SU0) (‘Standard Uranium’ or the ‘Company’) is pleased to announce preliminary results from its 2025 exploration program at the Rocas Uranium Project (‘Rocas’, or the ‘Project’), currently under a three-year earn-in option agreement with Collective Metals Inc. (‘Collective Metals’) (CSE: COMT). From September 30th to October 8th, 2025, the Company completed a detailed mapping and sampling program across historical uranium showings and zones of interest on the Project, identifying multiple zones of strong radioactivity.

Highlights:

• Strong Radioactivity at Surface – Verification of strong radioactivity at multiple historical uranium showings, with several handheld scintillometer measurements exceeding 10,000 counts per second (‘cps’) at surface.

• Discovery of New Radioactive Showings – Scintillometer prospecting identified previously undocumented radioactive anomalies across the Project area within lithologies favorable for uranium and Rare Earth Element (‘REE’) mineralization.

• Prime Location – Geological mapping along structural and electromagnetic (‘EM’) trends across the Project confirmed the presence of deformed and hydrothermally altered basement lithologies along more than 7.5 km of exploration strike length south of Key Lake.

• New Uranium Targets – Results from a high-resolution ground gravity survey completed in 2024 highlight potential alteration halos and high-priority exploration targets along well-defined structural corridors. A diamond drill program is planned for 2026 to test targets identified and prioritized through detailed exploration activities carried out this year.

‘The confirmation of strong radioactivity at the Rocas Project is an exciting step forward, directly validating historical uranium showings and highlighting the Project’s discovery potential,’ said Sean Hillacre, President & VP Exploration of Standard Uranium. ‘Surface grab samples and technical information collected during this program not only strengthen our geological model but also add real value ahead of a maiden drill program planned for next year.’

Figure 1. Regional map of Standard Uranium’s Rocas Project. The Project is located 75 kilometres southwest of the Key Lake Mine and Mill facilities along Highway 914.

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2025 Prospecting Program – Preliminary Results

The Rocas project comprises 4,002 hectares, located 75 kilometers southwest of the Key Lake Mine and Mill facilities along Highway 914, and approximately 72 kilometers south of the present-day margin of the Athabasca Basin (Figure 1). Beginning September 30^th and concluding October 8^th, 2025, the Standard Uranium technical team completed a detailed mapping, prospecting, and sampling program to ground-truth historical uranium showings at surface on the Project.

• A total of 16 outcrop and boulder grab samples have been submitted to Saskatchewan Research Council Geoanalytical Laboratories in Saskatoon, SK for whole-rock, uranium, and REE geochemical analysis.

• Prospecting confirmed several uraniferous outcrops and boulders across the Project, including SMDI showing 5781 (1,100 ppm U)¹. Anomalous^* radioactivity with a peak of >33,000 cps was measured at SMDI showing 5781 (Figure 2) with several other instances of elevated radiometry were noted, locally up to 26,000 cps.

• A total of 73 handheld scintillometer readings of anomalous radioactivity >300 cps were recorded, including 10 measurements >10,000 cps at surface (Figure 3). Prospecting for radioactive boulders and outcrop was completed using handheld RS-120 Super-Scintillometers and RS-125 Super-Spectrometers manufactured by Radiation Solutions Inc. (‘RSI’).

• More than 150 detailed geological observations, structural measurements, and scintillometer readings were taken from several outcrops across the Project within the target areas, identifying deformed and hydrothermally altered basement lithologies associated with radioactivity (Figure 4).

Figure 2. Investigation at SMDI showing 5781 returned strong radioactivity across an area of 35 m. Scintillometer readings ranging from: A) 26,900 cps, B) 25,400 cps, and C) 33,000 cps.

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Figure 3. Newly discovered quartz-rich pegmatitic orthogneiss outcrop reaching upwards of 28,200 cps along the northern conductor trend. Outcrop was partially under soil cover.

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Figure 4. Oxidized metasediment outcrop with hematite and limonite alteration

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Rocas Project Exploration

The Company plans to complete the first ever drill program on the Project in 2026 to begin testing high-priority zones along the main 7.5 kilometre magnetic low/EM conductive corridor, which is host to several uranium showings and has remained un-drill tested to date.

Earlier this year, the Company contracted MWH Geo-Surveys (Canada) Ltd. to carry out a high-resolution ground gravity survey over the Rocas Project², while Convolutions Geoscience Corporation has completed subsequent processing, interpretation, and modelling of the gravity data. The ground gravity survey outlines several gravity low anomalies coincident with historical surface mineralization, lakebed geochemical anomalies, and cross-cutting fault zones along the known conductive exploration trends on the Project.

Historical airborne EM work in 2017 defined conductive trends on the Project west of and sub-parallel to the Key Lake Road shear zone, corresponding with favourable metasedimentary basement lithologies. Multiple parallel conductors, offsets, and termination points indicate the trend widening and potential cross-cutting structures. Additionally, a 2007 field sampling program identified anomalous lakebed geochemical anomalies that statistically rank as greater than 95^th percentile U, Co, V, and Zn along the conductor corridor, including high U/Th ratios³.

The Company believes the Project is highly prospective for the discovery of shallow, high-grade^** basement-hosted uranium mineralization. Positioned proximal to the margin of the Athabasca Basin, Rocas boasts shallow drill targets with bedrock under minimal glacial till cover. Historical mineralized outcrop grab samples along approximately 900 metres of strike length, returned values ranging from 587 ppm U (SN85073) up to 0.498 wt.% U₃O₈ (SN23901) and have never been drill tested⁴.

Qualified Person Statement

The scientific and technical information contained in this news release has been reviewed, verified, and approved by Sean Hillacre, P.Geo., President and VP Exploration of the Company and a ‘qualified person’ as defined in NI 43-101 – Standards of Disclosure for Mineral Projects.

Historical data disclosed in this news release relating to sampling results from previous operators are historical in nature. Neither the Company nor a qualified person has yet verified this data and therefore investors should not place undue reliance on such data. The Company’s future exploration work may include verification of the data. The Company considers historical results to be relevant as an exploration guide and to assess the mineralization as well as economic potential of exploration projects. Any historical grab samples disclosed are selected samples and may not represent true underlying mineralization.

Natural gamma radiation from rocks reported in this news release was measured in counts per second (‘cps’) using a handheld RS-125 super-spectrometer and RS-120 super-scintillometer. Readers are cautioned that scintillometer readings are not uniformly or directly related to uranium grades of the rock sample measured and should be treated only as a preliminary indication of the presence of radioactive minerals. The RS-125 and RS-120 units supplied by RSI have been calibrated on specially designed Test Pads by RSI. Standard Uranium maintains an internal QA/QC procedure for calibration and calculation of drift in radioactivity readings through three test pads containing known concentrations of radioactive minerals. Internal test pad radioactivity readings are known and regularly compared to readings measured by the handheld scintillometers for QA/QC purposes.

References

¹ SMDI# 5781: https://mineraldeposits.saskatchewan.ca/Home/Viewdetails/5781 & Mineral Assessment Report MAW00726: Millenmin Ventures Inc. and Inner Mongolia Minerals (Canada) Ltd., 2013

²Standard Uranium Acquires Umbra and Sable Uranium Projects and Completes Geophysical Surveys on Rocas and Atlantic Projects, Eastern Athabasca Basin, Saskatchewan. https://standarduranium.ca/news-releases/standard-uranium-acquires-umbra-and-sable-uranium-projects/

³ Mineral Assessment Report 74B09-0032: Forum Uranium Corp., 2007

⁴ Mineral Assessment Report 74B09-0007: Uranex Ltd., 1977 & SMDI# 2465: https://mineraldeposits.saskatchewan.ca/Home/Viewdetails/2465

^*The Company considers radioactivity readings greater than 300 counts per second (cps) on a handheld RS-125 Super-Spectrometer to be ‘anomalous’.

^**The Company considers uranium mineralization with concentrations greater than 1.0 wt% U₃O₈ to be ‘high-grade’.

About Standard Uranium (TSXV: STND,OTC:STTDF)

We find the fuel to power a clean energy future

Standard Uranium is a uranium exploration company and emerging project generator poised for discovery in the world’s richest uranium district. The Company holds interest in over 235,435 acres (95,277 hectares) in the world-class Athabasca Basin in Saskatchewan, Canada. Since its establishment, Standard Uranium has focused on the identification, acquisition, and exploration of Athabasca-style uranium targets with a view to discovery and future development.

Standard Uranium’s Davidson River Project, in the southwest part of the Athabasca Basin, Saskatchewan, comprises ten mineral claims over 30,737 hectares. Davidson River is highly prospective for basement-hosted uranium deposits due to its location along trend from recent high-grade uranium discoveries. However, owing to the large project size with multiple targets, it remains broadly under-tested by drilling. Recent intersections of wide, structurally deformed and strongly altered shear zones provide significant confidence in the exploration model and future success is expected.

Standard Uranium’s eastern Athabasca projects comprise over 43,185 hectares of prospective land holdings. The eastern basin projects are highly prospective for unconformity related and/or basement hosted uranium deposits based on historical uranium occurrences, recently identified geophysical anomalies, and location along trend from several high-grade uranium discoveries.

Standard Uranium’s Sun Dog project, in the northwest part of the Athabasca Basin, Saskatchewan, is comprised of nine mineral claims over 19,603 hectares. The Sun Dog project is highly prospective for basement and unconformity hosted uranium deposits yet remains largely untested by sufficient drilling despite its location proximal to uranium discoveries in the area.

For further information contact:

Cautionary Statement Regarding Forward-Looking Statements

This news release contains ‘forward-looking statements’ or ‘forward-looking information’ (collectively, ‘forward-looking statements’) within the meaning of applicable securities legislation. All statements, other than statements of historical fact, are forward-looking statements and are based on expectations, estimates and projections as of the date of this news release. Forward-looking statements include, but are not limited to, statements regarding: the timing and content of upcoming work programs; geological interpretations; timing of the Company’s exploration programs; and estimates of market conditions.

Forward-looking statements are subject to a variety of known and unknown risks, uncertainties and other factors that could cause actual events or results to differ from those expressed or implied by forward-looking statements contained herein. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Certain important factors that could cause actual results, performance or achievements to differ materially from those in the forward-looking statements are highlighted in the ‘Risks and Uncertainties’ in the Company’s management discussion and analysis for the fiscal year ended April 30, 2025.

Forward-looking statements are based upon a number of estimates and assumptions that, while considered reasonable by the Company at this time, are inherently subject to significant business, economic and competitive uncertainties and contingencies that may cause the Company’s actual financial results, performance, or achievements to be materially different from those expressed or implied herein. Some of the material factors or assumptions used to develop forward-looking statements include, without limitation: that the transaction with the Optionee will proceed as planned; the future price of uranium; anticipated costs and the Company’s ability to raise additional capital if and when necessary; volatility in the market price of the Company’s securities; future sales of the Company’s securities; the Company’s ability to carry on exploration and development activities; the success of exploration, development and operations activities; the timing and results of drilling programs; the discovery of mineral resources on the Company’s mineral properties; the costs of operating and exploration expenditures; the presence of laws and regulations that may impose restrictions on mining; employee relations; relationships with and claims by local communities and indigenous populations; availability of increasing costs associated with mining inputs and labour; the speculative nature of mineral exploration and development (including the risks of obtaining necessary licenses, permits and approvals from government authorities); uncertainties related to title to mineral properties; assessments by taxation authorities; fluctuations in general macroeconomic conditions.

The forward-looking statements contained in this news release are expressly qualified by this cautionary statement. Any forward-looking statements and the assumptions made with respect thereto are made as of the date of this news release and, accordingly, are subject to change after such date. The Company disclaims any obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required by applicable securities laws. There can be no assurance that forward-looking statements 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 statements.

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

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(TheNewswire)

Vancouver, Canada, October 16, 2025 TheNewswire – Spartan Metals Corp. (‘ Spartan ‘ or the ‘ Company ‘) (TSX-V: W) is pleased to announce, it has initiated an exploration program (‘ Program ‘) at its Eagle Tungsten-Silver-Rubidium Project in Nevada (Figure 1). The focus of the Program will be characterizing the tailings at the historic Tungstonia millsite and completing extensive surface exploration at the Tungstonia and Rees claim blocks.

This Program will execute the entire Phase 1 of the recommended work program from Spartan’s July 31, 2025, NI 43-101 Technical Report on the Eagle Project and will be expanded to include the Surface Geology Program component of Phase 2. Results acquired from this campaign will be used to support future work plans and drill target generation.

Tungstonia Mill Tailings Characterization

The characterization of Tungstonia Millsite tailings will be the primary focus of the exploration activities and drilling will begin on October 20, 2025 . Drilling at the historic tailings site will use a hollow stem auger to collect samples. All samples collected will be used for thorough geochemical and metallurgical analysis, as well as to define the overall geometry for tonnage calculations, 3D modeling, quantitative assessment, resource estimation, and economic evaluation.

Surface Geology Program

The surface geology program will encompass both Tungstonia and Rees Claim blocks, with an emphasis on comprehensive soil sampling at an approximate 100 m x 100 metre (‘ m ‘) grid (Figures 2 and 3), expanded rock and outcrop sampling, geologic mapping, and geophysical investigations—including Controlled Source Audio-frequency Magnetotellurics (CSAMT) and/or Magnetotellurics (MT)—at Tungstonia. These efforts aim to more accurately define the lateral and vertical extent of existing tungsten-silver-rubidium veins, identify new vein occurrences (Figure 4), and determine high-potential drill targets.

Figure 1 Location map of Eagle Project showing the Tungstonia and Rees areas, located in White Pine County, Nevada

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Figure 2 Planned soil sampling locations at the Tungstonia Claims.

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Figure 3 Planned soil sampling locations at the Rees Claims

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Figure 4 Potential tungsten vein extensions and potential new veins in area of interest for geophysics. The assay information shown were previously reported on August 7, 2025.

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About The Eagle Project

The Eagle Project (‘Project’) presents a unique opportunity to delineate one of the largest and highest-grade Tungsten and Rubidium districts in the United States. The Project consists of the past-producing high-grade Tungstonia (W) and Rees/Antelope tungsten (W-Cu-Ag) mines. Operations at these mines were from 1915 to 1942 with intermittent small-scale production occurring until 1956. Tungsten production from these two mines totaled 8,379 units at grades between 0.6%-0.9% WO 3 (1).

The Project is ~20 km² in size and located approximately 120 kilometers northeast of the town of Ely, in the Kern Mountains of White Pine County, Nevada. The Project covers 4,936 acres consisting of 244 Bureau of Land Management (BLM) unpatented lode mining claims.

Three deposit types are present at Eagle; Porphyry, Skarn, and Carbonate Replacement (CRD) that contain significant or anomalous grades of Tungsten (W), Silver (Ag), and Rubidium (Rb) plus Cu-Ag-Sb±Au-Pb-Zn-Bi-As across three project focus areas that includes the potential to recover W-Rb-Ag from the legacy Tungstonia Mill Tailings.

(1) Nevada Bureau of Mines and Geology (1988), Bulletin 105 p213-217

The technical information contained in this news release has been prepared under the supervision of, and approved by Brett R. Marsh, CPG. Mr. Marsh is President and CEO of Spartan Metals Corp and a ‘qualified person’ as defined under National Instrument 43-101 – Standards of Disclosure for Mineral Projects .

About Spartan Metals Corp.

Spartan Metals is focused on developing critical minerals projects in top-tier mining jurisdictions in the Western United States, with an emphasis on building a portfolio of diverse strategic defense minerals such as Tungsten, Rubidium, Antimony, Bismuth, and Arsenic.

Spartan’s flagship project is the Eagle Project in eastern Nevada that consists of the highest-grade historic tungsten resource in the USA (the past-producing Tungstonia Mine) along with significant under-defined resources consisting of: high-grade rubidium; antimony; bismuth; indium; as well as precious and base metals. More information about Spartan Metals can be found at www.SpartanMetals.com

On behalf of the Board of Spartan

‘Brett Marsh’

President, CEO & Director

Further Information:

Brett Marsh, M.Sc., MBA, CPG

President, CEO & Director

1-888-535-0325

info@spartanmetals.com

Neither the TSX Venture Exchange nor its Regulation Service Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this press release

Forward Looking Statements

This news release contains statements that constitute ‘forward-looking statements.’ Such forward looking statements involve known and unknown risks, uncertainties and other factors that may cause the Company’s actual results, performance or achievements, or developments in the industry to differ materially from the anticipated results, performance or achievements expressed or implied by such forward-looking statements. Forward-looking statements are statements that are not historical facts and are generally, but not always, identified by the words ‘expects,’ ‘plans,’ ‘anticipates,’ ‘believes,’ ‘intends,’ ‘estimates,’ ‘projects,’ ‘potential’ and similar expressions, or that events or conditions ‘will,’ ‘would,’ ‘may,’ ‘could’ or ‘should’ occur. Forward-Looking Information in this news release, Spartan has applied several material assumptions, including, but not limited to, assumptions that: the current objectives concerning the Company’s projects can be achieved and that its other corporate activities will proceed as expected; that general business and economic conditions will not change in a materially adverse manner; and that all requisite information will be available in a timely manner.

Although the Company believes the forward-looking information contained in this news release is reasonable based on information available on the date hereof, by their nature forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements.  By their nature, these statements involve a variety of assumptions, known and unknown risks and uncertainties and other factors, which may cause actual results, levels of activity and achievements to differ materially from those expressed or implied by such statements.

Examples of such assumptions, risks and uncertainties include, without limitation, assumptions, risks and uncertainties associated with general economic conditions; adverse industry events; future legislative and regulatory developments; the Company’s ability to access sufficient capital from internal and external sources, and/or inability to access sufficient capital on favorable terms; the ability of the Company to implement its business strategies; competition; the ability of the Company to obtain and retain all applicable regulatory and other approvals and other assumptions, risks and uncertainties.

THE FORWARD-LOOKING INFORMATION CONTAINED IN THIS NEWS RELEASE REPRESENTS THE EXPECTATIONS OF THE COMPANY AS OF THE DATE OF THIS NEWS RELEASE AND, ACCORDINGLY, IS SUBJECT TO CHANGE AFTER SUCH DATE. READERS SHOULD NOT PLACE UNDUE IMPORTANCE ON FORWARD-LOOKING INFORMATION AND SHOULD NOT RELY UPON THIS INFORMATION AS OF ANY OTHER DATE. WHILE THE COMPANY MAY ELECT TO, IT DOES NOT UNDERTAKE TO UPDATE THIS INFORMATION AT ANY PARTICULAR TIME EXCEPT AS REQUIRED IN ACCORDANCE WITH APPLICABLE LAWS.

Copyright (c) 2025 TheNewswire – All rights reserved.

Nevgold Corp. (‘ NevGold ‘ or the ‘ Company ‘) ( TSXV:NAU,OTC:NAUFF) (OTCQX:NAUFF) (Frankfurt:5E50 ) is pleased to announce the discovery of high-grade oxide antimony in the new antimony-gold ‘Bullet Zone’ from surface at its Limousine Butte Project (the ‘Project’, ‘Limo Butte’) in Nevada. The Bullet Zone was discovered with a plus 150 meter step-out drillhole from 2025 drilling that was testing NevGold’s new geology model at the Project. The Bullet Zone discovery significantly expands the gold-antimony mineralization footprint at the Resurrection Ridge target area, which NevGold is advancing to an initial gold-antimony Mineral Resource Estimate (‘MRE’).

Key Highlights

• Discovery of the Bullet Zone with new 2025 step-out drilling intercepts the highest-grade antimony (‘Antimony’, ‘Sb’) interval drilled to date at the Project, with grades up to 8.9% Sb :
  • LB25-002 Upper Zone (from surface): 14.90 g/t AuEq* over 4.6 meters (3.76% Sb and 0.29 g/t Au) , within 2.42 g/t AuEq* over 53.3 meters (0.57% Sb and 0.22 g/t Au)
  • LB25-002 Lower Zone: 0.82 g/t AuEq* over 32.0 meters (0.68 g/t Au and 0.04% Sb) , within 0.58 g/t AuEq* over 57.9 meters (0.45 g/t Au and 0.03% Sb)
  • *Gold equivalents (‘AuEq’) are based on assumed metals prices of US$3,000/oz of gold and US$40,000 per tonne of antimony (~30% discount to current spot prices), and assumed metals recoveries of 80% for gold and 75% for antimony.
• Over 150 meter step-out and discovery of the Bullet Zone significantly expands the mineralization footprint at Resurrection Ridge; the Company intends to advance both Resurrection Ridge and Cadillac Valley to an initial gold-antimony Mineral Resource Estimate (‘MRE’)
  • 11 drillholes have been completed in the current 2025 drill campaign with assays pending
• Positive samples at surface up to 6.8% antimony and 0.25 g/t Au found in road cuts during construction of the new 2025 drill pads (see Figure 1); the new drill pads are focused on expansion areas and show the extensive mineralization potential at the Project

• Phase II metallurgical testwork on gold and antimony continues to advance with results expected over the coming weeks

Limo Butte Planned 2025 Activities / Status Update
NevGold will continue its active exploration program at Limo Butte including:

• Evaluating the historical geological database with focus on gold and antimony (completed) ;

• Analyzing historical drilling with focus on gold and antimony (continuous activity) ;

• Advancing metallurgical testwork (in progress, Phase II results in coming weeks) ;

• Continuing to drill test gold-antimony targets (ongoing, 11 drillholes completed to date) ;

• Completing initial gold-antimony Mineral Resource Estimate (MRE) (in progress) .

NevGold CEO, Brandon Bonifacio, comments: ‘We are extremely excited about the discovery of the high-grade antimony intercept in the new oxide gold-antimony Bullet Zone from surface . The geological concept of drilling below the older, thrusted dolomite unit was a target that our team developed over the past couple of years working at Limo Butte. The fact that we intercepted some of the highest grade mineralization that we have drilled to date at Limo Butte on the 1 ^st hole testing this target concept is exceptional and a testament to our technical team. The discovery of the Bullet Zone also significantly expands the mineralization footprint at Resurrection Ridge, and opens large areas of the Project overlain by dolomite, with no historical drilling .’

Bonifacio continues: ‘We are also well-positioned with Limo Butte to support the United States critical minerals strategy as the Project has both gold and antimony, and both commodities have reached all-time high prices this year. There is a clear commitment from government officials to advance high-quality, domestic, mineral projects and Limo Butte is well-advanced with its significant near-surface, oxide gold-antimony mineralization and large geological database . We are also progressing another key milestone, which is the Phase II metallurgical testwork on the gold-antimony metallurgical flowsheet building on our positive results from Phase I. All of these various work programs will help us rapidly demonstrate the gold-antimony potential at Limo Butte as we progress the asset to the next stages of project development with the objective of playing a key part in the mandate to create a vertically integrated, U.S. antimony supply chain .’

Figure 1 – Resurrection Ridge target area with the new Bullet Zone discovery from LB25-002. Figure also includes the 2025 drillpads and identified expansion areas with the thrust faulted Upper Plate Dolomite. Red outline is current mineralization footprint at Resurrection Ridge, with +150 meter step-out to the east with Hole 25-002 and discovery of the Bullet Zone. To view image please click here

Figure 2 – Cross section with results from LB25-002 and new Bullet Zone discovery. Thin colored discs show Antimony (Sb ppm) in drilling, and wide colored discs show Gold (Au ppm) in drilling. To view image please click here

Figure 3 – Large cross section at the Project outlining the strong expansion potential between Resurrection Ridge and Crashed Airplane Valley, which spans +2.5 kilometers. To view image please click here

Figure 4 – Sample from road cut building new 2025 drill pads which assayed 6.8% antimony and 0.25 g/t Au in newly identified expansion part of the Project around the Bullet Zone discovery. Elongated white crystals are stibiconite (Sb ₃ O ₆ (OH)). To view image please click here

Figure 5 – Sample area from drill pad from drillhole LB25-002, which discovered the high-grade Bullet Zone, showing strong stibiconite and stibnite mineralization. To view image please click here

2025 Drill Results

*Downhole thickness reported; true width varies depending on drill hole dip and is approximately 70% to 90% of downhole thickness.
**The gold equivalents (‘AuEq’) are based on assumed metals prices of US$3,000/oz of gold and US$40,000 per tonne of antimony (~30% discount to current spot prices), and assumed metals recoveries of 80% for gold and 75% for antimony.

Limo Butte – Updated Geological Model Summary
The Devonian Pilot Shale (‘Pilot Shale’, ‘Pilot’) is the principal local host to Carlin-type mineralization at Limousine Butte. At Limousine Butte, positive gold grades commonly coincide with silicification and jasperoid breccias within the Pilot Shale, an alteration style also observed where elevated antimony is reported.

NevGold’s 2021–2025 work included integrating historical drilling, new mapping, and surface sampling which produced an updated district model and refined property-wide controls on mineralization. At Resurrection Ridge , Devonian–Silurian dolomite is exposed immediately east of known gold-antimony mineralization. Earlier explorers inferred that the overlying Pilot Shale had been eroded in this area, and they did not test eastward, despite shallow high-grade intercepts in the easternmost holes drilled at Resurrection Ridge. The new model indicates the older dolomite was thrust over the prospective Pilot Shale unit, creating structural preparation and a fluid trap that preserves the favorable host at depth, the classic architecture for a Carlin-type system.

Hole LB25-002 , the first test of this new NevGold geological model, collared in dolomite, passed through the upper thrust plate, and intersected gold and antimony at multiple horizons within the Pilot Shale. This drillhole result validates the model and materially expands the potential mineralization footprint: the preserved Pilot Shale extends more than one kilometer east of prior drilling at Resurrection Ridge.

Figure 6 – Comparison of historical geological model (left) and new NevGold geological model (right) outlining the thesis that the older dolomite unit was thrust over the prospective Pilot Shale unit. The preserved Pilot Shale unit extends more than 1 kilometer east of prior drilling at Resurrection Ridge. To view image please click here

Property-wide, the updated model outlines multiple Au–Sb target corridors that track outcrops and projected subsurface positions of the Pilot Shale, where repeated faulting and thrusting provided fluid pathways and focused mineralization. NevGold’s 2025 drill program continues to test these high-priority targets.

Historical records within the project boundary document two small-scale antimony prospects—the Nevada Antimony Mine and the Lage Antimony Prospect (Figure 1). The Nevada Antimony Mine extracted stibnite (Sb₂S₃) from a hydrothermal breccia via shallow pits; the Lage prospect similarly reports limited antimony production. Complementing these records, rock-chip sampling from the Golden Butte pit (Brigham Young University thesis) returned numerous assays exceeding 1% Sb in jasperoid breccias, with several over 5% Sb , including a sample grading 9.6% Sb with visible stibnite and stibiconite ( BYU Thesis Report ).

Together, these datasets support a district-scale interpretation in which thrust repetition preserves the Pilot Shale at depth east of Resurrection Ridge and focuses Au–Sb mineralization along structurally prepared horizons, establishing multiple high-priority targets for step-out drilling and follow-up work.

Figure 7 – Limousine Butte Project with historical antimony in rock chips and soils. The total strike length between Resurrection Ridge and Cadillac Valley is +5km. To view image please click here

Drillhole Orientation Details

US Executive Order – Announced March 20, 2025
The Company is pleased to report the sweeping Executive Order to strengthen American mineral production and reduce U.S. reliance on foreign nations for its mineral supply . Antimony (Sb) has been identified as an important ‘Critical Mineral’ in the United States essential for national security, clean energy, and technology applications, yet no domestically mined supply currently exists.

The Executive Order invokes the use of the Defense Production Act as part of a broad United States (‘US’) Government effort to expand domestic minerals production on national security grounds. As it relates to project permitting, the Order states that it will ‘identify priority projects that can be immediately approved or for which permits can be immediately issued, and take all necessary or appropriate actions…to expedite and issue the relevant permits or approvals.’ Furthermore, the Order includes provisions to accelerate access to private and public capital for domestic projects, including the creation of a ‘dedicated mineral and mineral production fund for domestic investments’ under the Development Finance Corporation (‘DFC’).

This decisive action by the US Government highlights the urgent need to expand domestic minerals output to support supply chain security in the United States. This important Order will help revitalize domestic mineral production by improving the permitting process and providing financial support to qualifying domestic projects.

Importance of Antimony
Antimony is considered a ‘Critical Mineral’ by the United States based on the U.S. Geological Survey’s 2022 list (U.S.G.S. (2022)). ‘Critical Minerals’ are metals and non-metals essential to the economy and national security. Antimony is utilized in all manners of military applications, including the manufacturing of armor piercing bullets, night vision goggles, infrared sensors, precision optics, laser sighting, explosive formulations, hardened lead for bullets and shrapnel, ammunition primers, tracer ammunition, nuclear weapons and production, tritium production, flares, military clothing, and communication equipment. Other uses include technology (semi-conductors, circuit boards, electric switches, fluorescent lighting, high quality clear glass and lithium-ion batteries) and clean-energy storage.

Globally, approximately 90% of the world’s current antimony supply is produced by China, Russia, and Tajikistan. Beginning on September 15, 2024, China, which is responsible for nearly half of all global mined antimony output and dominates global refinement and processing, announced that it will restrict antimony exports. In December-2024, China explicitly restricted antimony exports to the United States citing its dual military and civilian uses, which further exacerbated global supply chain concerns. (Lv, A. and Munroe, T. (2024)) The U.S. Department of Defense (‘DOD’) has designated antimony as a ‘Critical Mineral’ due to its importance in national security, and governments are now prioritizing domestic production to mitigate supply chain disruptions. Projects exploring antimony sources in North America play a key role in addressing these challenges.

Perpetua Resources Corp. (‘Perpetua’) has the most advanced domestic gold-antimony project in the United States. Perpetua’s project, known as Stibnite, is located in Idaho approximately 130 km northeast of NevGold’s Nutmeg Mountain and Zeus projects. Positive advancements at Stibnite including the technical development and permitting has led to US$75 million in Department of Defense (‘DOD’) awards, and over $1.8 billion in indicative financing from the Export Import Bank of the United States (‘US EXIM’) ( see Perpetua Resources News Release from April 8, 2024 ) (Perpetua Resources. (2025))

Figure 8 – Limousine Butte Land Holdings and District Exploration Activity To view image please click here

ON BEHALF OF THE BOARD

‘Signed’

Brandon Bonifacio, President & CEO

For further information, please contact Brandon Bonifacio at bbonifacio@nev-gold.com, call 604-337-4997, or visit our website at www.nev-gold.com .

Sampling Methodology, Quality Control and Quality Assurance
NevGold QA/QC protocols are followed on the Project and include insertion of duplicate, blank and standard samples in all drill holes. A 30g gold fire assay and multi-elemental analysis ICP-OES method was completed by ISO 17025 certified American Assay Labs, Reno.

The historic data collection chain of custody procedures and analytical results by previous operators appear adequate and were completed to industry standard practices. For the Newmont and US Gold data a 30g gold fire assay and multi-elemental analysis ICP-OES method MS-41 was completed by ISO 17025 certified ALS Chemex, Reno or Elko Nevada.

Geochemical ICP (5g) analysis for the Wilson, Christianson and Tingey report was completed by Geochemical Services Inc. and the XRF analyses (glass disk or pellets) by Brigham Young University.

Technical information contained in this news release has been reviewed and approved by Greg French, CPG, the Company’s Vice President, Exploration, who is NevGold’s Qualified Person (‘QP’) under National Instrument 43-101 and responsible for technical matters of this release.

About the Company
NevGold is an exploration and development company targeting large-scale mineral systems in the proven districts of Nevada and Idaho. NevGold owns a 100% interest in the Limousine Butte and Cedar Wash gold projects in Nevada, and the Nutmeg Mountain gold project and Zeus copper project in Idaho.

Neither the TSX Venture Exchange nor its Regulation 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.

Cautionary Note Regarding Forward Looking Statements

This news release contains forward-looking statements that are based on the Company’s current expectations and estimates. Forward-looking statements are frequently characterized by words such as ‘plan’, ‘expect’, ‘project’, ‘intend’, ‘believe’, ‘anticipate’, ‘estimate’, ‘suggest’, ‘indicate’ and other similar words or statements that certain events or conditions ‘may’ or ‘will’ occur. Forward-looking statements include, but are not limited to, the proposed work programs at Limousine Butte, the exploration potential at Limousine Butte, and future potential project milestones such as the potential Mineral Resource Estimate (‘MRE’). Such forward-looking statements involve known and unknown risks, uncertainties and other factors that could cause actual events or results to differ materially from estimated or anticipated events or results implied or expressed in such forward-looking statements. Such risks include, but are not limited to, general economic, market and business conditions, and the ability to obtain all necessary regulatory approvals. There is some risk that the forward-looking statements will not prove to be accurate, that the management’s assumptions may not be correct or that actual results may differ materially from such forward-looking statements. Accordingly, readers should not place undue reliance on the forward-looking statements. Any forward-looking statement speaks only as of the date on which it is made and, except as may be required by applicable securities laws, the Company disclaims any intent or obligation to update any forward-looking statement, whether as a result of new information, future events or results or otherwise. Forward-looking statements are not guarantees of future performance and accordingly undue reliance should not be put on such statements due to the inherent uncertainty therein.

References

Blackmon, D. (2021) Antimony: The Most Important Mineral You Never Heard Of. Article Prepared by Forbes.

Kurtenbach, E. (2024) China Bans Exports to US of Gallium, Germanium, Antimony in response to Chip Sanctions . Article Prepared by AP News.

Lv, A. and Munroe, T. (2024) China Bans Export of Critical Minerals to US as Trade Tensions Escalate . Article Prepared by Reuters.

Lv, A. and Jackson, L. (2025) China’s Curbs on Exports of Strategic Minerals . Article Prepared by Reuters.

Perpetua Resources. (2025) Antimony Summary . Articles and Videos Prepared by Perpetua Resources.

Sangine, E. (2022) U.S. Geological Survey, Mineral Commodity Summaries, January 2023 . Antimony Summary Report prepared by U.S.G.S

U.S.G.S. (2022) U.S. Geological Survey Releases 2022 List of Critical Minerals . Reported Prepared by U.S.G.S

Wilson, D.,J., Christiansen, E., H., and Tingey, D., G., 1994, Geology and Geochemistry of the Golden Butte Mine- A Small Carlin- Type Gold Deposit in Eastern Nevada: Brigham Young University Geology Studies, v.40, P.185-211. BYU V.40 P.185-211.

Stallion Uranium Corp. (the ‘ Company ‘ or ‘ Stallion ‘ ) (TSX-V: STUD ; OTCQB: STLNF ; FSE: FE0) pleased to announce that it will commence a high-resolution ground Time Domain Electromagnetic (TDEM) survey on November 1, 2025, on its Coyote Target, part of the Moonlite Project in the Athabasca Basin, Saskatchewan, Canada in partnership with Atha Energy Corp. (‘Atha Energy’) (TSX-V: SASK) .

This survey is designed to extend and refine the results of Stallion’s previous EM work, with the goal of precisely defining conductive structures commonly associated with uranium mineralization. The program will focus on the Coyote Corridor, home to Stallion’s top-priority drill targets identified through detailed analysis of historical datasets and newly acquired geophysical information. These targets were ranked using Stallion’s multi-parameter review, which applies an 11 step ranking criteria of components for discovery.

Matthew Schwab, CEO of Stallion Uranium, said, ‘Launching this ground EM survey at the Coyote Target is a critical step toward advancing our discovery efforts. By improving the resolution of our geophysical data, we expect not only to sharpen the definition of our highest-priority targets, but also to increase the number of drill-ready locations across the Coyote Corridor. Each additional high-confidence target strengthens our ability to deliver meaningful results in the upcoming drill campaign.’

Figure 1 : Coyote Target – 3D image of SWML Plates over 3D Gravity

Conductors interpreted from previous MobileMT Survey

The survey will be conducted by Abitibi Geophysics using the Stepwise Moving Loop (SWML) TDEM method, a proven technique for detecting conductive zones within basement rock. Data collected will be fully integrated with the airborne and ground surveys completed earlier in 2025, providing Stallion with an enhanced geophysical model to guide next-stage exploration.

Darren Slugoski, Vice President of Exploration, said, ‘This ground-based survey will significantly improve the resolution of our geophysical data, allowing us to more accurately model conductive features at depth. By integrating the results with our existing datasets, we will be able to fine-tune the positioning of drill collars and reduce the risk of missing mineralized structures. Increasing confidence in the geometry and location of these conductors is essential to maximizing the effectiveness of our upcoming drill program.’

Figure 2 : Coyote Target – SWML Plates over Gravity with planned EM survey locations

Survey results are expected in late November 2025 and will directly guide final drill targeting. Stallion is preparing to mobilize for a winter drill program in December 2025, where the refined targets from the Coyote Corridor will be tested for potential uranium mineralization.

About the Stepwise Moving Loop (SWML) TDEM Survey:

The SWML TDEM survey utilizes Abitibi’s cutting-edge ARMIT-TDEM system, featuring a three-component, combined B-field and ∂B/∂t sensor developed by Dr. James Macnae of the Royal Melbourne Institute of Technology (RMIT). The ARMIT sensor delivers an exceptional signal-to-noise ratio, comparable to a SQUID sensor for B-field measurements and an induction coil for B/t detection. It is designed for robust performance across extreme temperatures (-40°C to +50°C) without the need for hazardous cryogenic liquids.

ARMIT is the only sensor capable of simultaneously measuring both B-field and B/t, ensuring a broad detection range for conductive structures. The system is paired with the state-of-the-art SMARTem24 receiver and powered by Abitibi’s TerraScope 600V transmitter, delivering currents exceeding 25 A into the transmitter loop, maximizing the survey’s depth penetration and resolution.

Marketing Update:

In parallel with advancing exploration, Stallion Uranium has engaged specialized marketing firms to expand its market presence and broaden shareholder awareness. These initiatives include targeted digital campaigns, media and content development, and investor outreach programs across North America and Europe. The objective is to ensure Stallion’s technical milestones; including the commencement of the Coyote Target ground EM survey and the planned January 2026 drill program; are effectively communicated to both existing shareholders and new audiences.

The Company announces that it engaged Danayi Capital Corp. (‘Danayi’) to provide investor relations and marketing services to the Company for a term of two (2) months commencing on September 29, 2025, in consideration of an upfront payment of USD $100,000 pursuant to an agreement dated September 29, 2025. Danayi does not currently own any interest, directly or indirectly, in the Company or its securities. The agreement with Danayi remains subject to approval of the TSX Venture Exchange.

Upcoming Events:

Stallion Uranium will be attending the upcoming the Catch the Energy Conference taking place at Mount Royal University in Calgary, Alberta. Stallion CEO Matthew Schwab will be presenting on Saturday, October 18, 2025, at 2:15 pm Mountain Time . Further information and registration for Catch the Energy Conference can be found here .

Qualifying Statement:

The foregoing scientific and technical disclosures for Stallion Uranium have been reviewed and approved by Darren Slugoski, P.Geo., VP Exploration, a registered member of the Professional Engineers and Geoscientists of Saskatchewan. Mr. Slugoski is a Qualified Person as defined by National Instrument 43-101.

About Stallion Uranium Corp.:

Stallion Uranium is working to ‘Fuel the Future with Uranium’ through the exploration of roughly 1,700 sq/km in the Athabasca Basin, home to the largest high-grade uranium deposits in the world. The company, with JV partner Atha Energy holds the largest contiguous project in the Western Athabasca Basin adjacent to multiple high-grade discovery zones. With a commitment to responsible exploration and cutting-edge technology such as the use of the proprietary Haystack TI technology, Stallion is positioned to play a key role in the future of clean energy.

Our leadership and advisory teams are comprised of uranium and precious metals exploration experts with the capital markets experience and the technical talent for acquiring and exploring early-stage properties. For more information visit stallionuranium.com .

On Behalf of the Board of Stallion Uranium Corp.:

Matthew Schwab
CEO and Director

Corporate Office:
700 – 838 West Hastings Street,
Vancouver, British Columbia,
V6C 0A6

T: 604-551-2360
info@stallionuranium.com

Neither the TSX Venture Exchange nor its Regulation 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.

This news release contains forward-looking statements and forward-looking information within the meaning of Canadian securities legislation (collectively, ‘forward-looking statements’) that relate to the Company’s current expectations and views of future events. Any statements that express, or involve discussions as to, expectations, beliefs, plans, objectives, assumptions or future events or performance (often, but not always, through the use of words or phrases such as ‘will likely result’, ‘are expected to’, ‘expects’, ‘will continue’, ‘is anticipated’, ‘anticipates’, ‘believes’, ‘estimated’, ‘intends’, ‘plans’, ‘forecast’, ‘projection’, ‘strategy’, ‘objective’ and ‘outlook’) are not historical facts and may be forward-looking statements and may involve estimates, assumptions and uncertainties which could cause actual results or outcomes to differ materially from those expressed in such forward-looking statements. No assurance can be given that these expectations will prove to be correct and such forward-looking statements included in this material change report should not be unduly relied upon. These statements speak only as of the date they are made.

Forward-looking statements are based on a number of assumptions and are subject to a number of risks and uncertainties, many of which are beyond the Company’s control, which could cause actual results and events to differ materially from those that are disclosed in or implied by such forward-looking statements. The Company undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required by law. New factors emerge from time to time, and it is not possible for the Company to predict all of them or assess the impact of each such factor or the extent to which any factor, or combination of factors, may cause results to differ materially from those contained in any forward-looking statement. Any forward-looking statements contained in this presentation are expressly qualified in their entirety by this cautionary statement .