Skyharbour Resources Ltd . (TSX-V: SYH ) (OTCQX: SYHBF ) (Frankfurt: SC1P ) (‘Skyharbour’ or the ‘Company’) is pleased to announce that partner company Mustang Energy Corp. (‘Mustang’) received the results of a high resolution HTDEM survey at the 914W Uranium Project (the ‘Project’), totaling 136 line-kms. The Project has road access and is in a prospective region known for its mineral potential south of the Athabasca Basin. The 914W TDEM survey successfully defined a well-developed conductive zone within the project. The geometry and strength of the anomaly are consistent with graphitic basement rocks or fault-bound alteration zones, both favorable for unconformity-type uranium mineralization. Mustang Energy may acquire a 75% interest in the Project by issuing common shares having an aggregate value of CAD $480,000, making aggregate cash payments of $275,000 to Skyharbour, and incurring an aggregate of $800,000 in exploration expenditures on the property over a three-year period.

914W Property Map:
https://skyharbourltd.com/_resources/projects/914W-image2.jpg

The Xcite helicopter-borne Time Domain Electromagnetic (TDEM) survey was flown by Axiom Exploration Group Ltd. over the Project, covering approximately 136 line-km. The survey simultaneously collected electromagnetic, magnetic, and radiometric data to map conductive, magnetic, and radiometric variations related to prospective uranium-bearing structures. The survey was flown in addition to Mustang’s nearby Spur project TDEM survey.

Early-time channels (0.014–0.045 ms) show strong, high-amplitude EM responses along the east-central portion of the 914W block, indicating shallow conductive zones near surface. This conductor persists through mid-to-late time channels (0.12–0.56 ms) and may represent graphitic horizons or fault-controlled alteration zones, a key uranium pathfinder feature in the Athabasca Basin margin setting. The intensity and continuity of the anomaly diminish slightly with later decay times, consistent with a discrete subsurface conductor rather than surficial noise.

HTDEM Survey Shows High-Amplitude EM Responses Along East-Central 914W Block:
https://www.skyharbourltd.com/_resources/maps/Airborne-HTDEM-survey-over-914W-2.png

The inversion modelling from 50 m to 350 m depth shows consistent conductive features. From 50 – 150 m the depth slices show a strong, laterally continuous conductive zone trending east-northeast across the east-central portion of the property. The 250 to 350 m depth slices show the conductivity anomaly persists at depth.

2025 914W Soil Sampling Results:

A one-week prospecting and soil sampling program was carried out on claim 914W in May of 2025. In total, 25 rock samples and 142 soil samples were collected. The soil sampling focused on the northwest corner of the property immediately south of the Scurry Rainbow E Zone and the Don Lake Trenches where no outcrop exposure is present. Rock sampling was limited by the scarcity of exposed outcrop across the property.

Conductivity Depth Slice (150m) Shows Strong EM Response in East-Central 914W Block:
https://www.skyharbourltd.com/_resources/maps/Airborne-HTDEM-survey-over-914W-1.png

Although the program did not identify any new significant discoveries, particularly in the southern portion of the Project, the northern soil grid returned anomalous uranium values. In this program, five soil samples from the southern portion of the grid exceeded 4 ppm U, which would be considered slightly elevated.

Prospecting efforts did not confirm elevated uranium values in the southwestern part of the grid, likely due to limited outcrop exposure. However, anomalous uranium values were identified in the northeastern portion of the soil grid, including a granitic gneiss sample that returned 42.3 ppm U.

Sampling Methods:

Samples were submitted to SRC Laboratories in Saskatoon, SK, for analysis. Both rock and soil samples were tested using ICP-MS with four-acid digestion, ICP total four-acid digestion, and U₃O₈ assays by ICP reported in weight percent.

Horizon A soil samples were collected by removing surface vegetation with a trowel and sampling the uppermost layer of topsoil. Rock samples were taken from exposed basement boulders or granitic outcrops that returned elevated counts per second (cps) readings.

2025 914W Project Soil and Rock Sample Assay Results – U Ppm:
https://www.skyharbourltd.com/_resources/maps/914W-project-soil-and-rock-sample.png

914W Property Summary:

The 914W Project consists of one claim covering 1,260 hectares approximately 48 km southwest of Cameco’s Key Lake Operation. Highway 914 runs through the western edge of the project, providing excellent access for exploration. Historical geological mapping of the property and the surrounding area has shown that the project is predominantly underlain by prospective Wollaston Supergroup pelitic and psammitic to arkosic gneisses of the Western Wollaston Domain, which hosts significant unconformity-related uranium mineralization in the Athabasca Basin as well as pegmatite-hosted uranium mineralization elsewhere in the Wollaston Domain.

Despite the project’s proximity to Highway 914 and prospective geology, the project has seen limited modern exploration work. The earliest work on the 914W property included airborne EM and magnetic surveys and ground geological reconnaissance in 1968-1970, lake water and sediment sampling in 1976, ground VLF-EM, magnetic, and radiometric surveys, geological mapping, trenching, as well as sampling on the project and surrounding areas. Immediately to the north of the 914W property, prospecting led to the discovery of the Scurry Rainbow Zone E (SMDI1961) and the Don Lake Trenches (SMDI 1983), where up to 1,288 ppm U was encountered in drill hole ML-1 (SMDI1961) in a pyroxene-rich unit, and surface prospecting revealed up to 0.64% U ₃ O ₈ in a trench at Don Lake Zone E (SMDI 1983). More recently, the project has seen airborne geophysical coverage by helicopter-borne VTEM (southern half) in 2005 and Tempest TDEM (northern half) in 2007, with prospecting, geological mapping, rock/sediment sampling and lake sediment sampling occurring on the project and surrounding areas in 2005-2007. The project remains underexplored and prospective for unconformity-related and pegmatite-hosted uranium and REE’s.

Qualified Person:

The technical information in this news release has been prepared in accordance with the Canadian regulatory requirements set out in National Instrument 43-101 and reviewed and approved by Serdar Donmez, P.Geo., VP of Exploration for Skyharbour as well as a Qualified Person.
About Mustang Energy Corp.:

Mustang Energy is a Canadian mineral exploration company focused on the discovery and development of high-potential uranium and critical mineral assets. The company holds a portfolio of 147,153 hectares of strategically located properties in Saskatchewan’s Athabasca Basin—one of the world’s premier uranium districts. Mustang is advancing early-stage exploration through modern techniques and a disciplined, data-driven approach. The Company is committed to building long-term value through responsible exploration and a focus on high-impact targets in underexplored areas.

About Skyharbour Resources Ltd.:

Skyharbour holds an extensive portfolio of uranium exploration projects in Canada’s Athabasca Basin and is well positioned to benefit from improving uranium market fundamentals with interest in thirty-seven projects covering over 616,000 hectares (over 1.5 million acres) of land. Skyharbour has acquired from Denison Mines, a large strategic shareholder of the Company, a 100% interest in the Moore Uranium Project, which is located 15 kilometres east of Denison’s Wheeler River project and 39 kilometres south of Cameco’s McArthur River uranium mine. Moore is an advanced-stage uranium exploration property with high-grade uranium mineralization in several zones at the Maverick Corridor. Adjacent to the Moore Project is the Russell Lake Uranium Project, in which Skyharbour is operator with joint-venture partner RTEC. The project hosts widespread uranium mineralization in drill intercepts over a large property area with exploration upside potential. The Company is actively advancing these projects through exploration and drilling programs.

Skyharbour also has joint ventures with industry leader Orano Canada Inc., Azincourt Energy, and Thunderbird Resources at the Preston, East Preston, and Hook Lake Projects, respectively. The Company also has several active earn-in option partners, including CSE-listed Basin Uranium Corp. at the Mann Lake Uranium Project; TSX-V listed North Shore Uranium at the Falcon Project; UraEx Resources at the South Dufferin and Bolt Projects; Hatchet Uranium at the Highway Project; CSE-listed Mustang Energy at the 914W Project; and TSX-V listed Terra Clean Energy at the South Falcon East Project.

In aggregate, Skyharbour has now signed earn-in option agreements with partners that total to over $36 million in partner-funded exploration expenditures, over $20 million worth of shares being issued, and $14 million in cash payments coming into Skyharbour, assuming that these partner companies complete their entire earn-ins at the respective projects.

Skyharbour’s goal is to maximize shareholder value through new mineral discoveries, committed long-term partnerships, and the advancement of exploration projects in geopolitically favourable jurisdictions.

Skyharbour’s Uranium Project Map in the Athabasca Basin:
https://skyharbourltd.com/_resources/news/SKY_SaskProject_Locator_2025_07_16_v1.jpg

To find out more about Skyharbour Resources Ltd. (TSX-V: SYH) visit the Company’s website at www.skyharbourltd.com .

Skyharbour Resources Ltd.

‘Jordan Trimble’

Jordan Trimble
President and CEO

For further information contact myself or:
Nicholas Coltura
Investor Relations Manager
Skyharbour Resources Ltd.
Telephone: 604-558-5847
Toll Free: 800-567-8181
Facsimile: 604-687-3119
Email: info@skyharbourltd.com

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THE CONTENT OF THIS NEWS RELEASE.

The securities offered have not been, and will not be, registered under the United States Securities Act of 1933, as amended (the ‘U.S. Securities Act’) or any U.S. state securities laws, and may not be offered or sold in the United States or to, or for the account or benefit of, United States persons absent registration or an applicable exemption from the registration requirements of the U.S. Securities Act and applicable U.S. state securities laws. This press release does not constitute an offer to sell or the solicitation of an offer to buy securities in the United States, nor in any other jurisdiction.

This release includes certain statements that may be deemed to be ‘forward-looking statements’. All statements in this release, other than statements of historical facts, that address events or developments that management of the Company expects, are forward-looking statements, including the Private Placement.  Although management believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance, and actual results or developments may differ materially from those in the forward-looking statements. The Company undertakes no obligation to update these forward-looking statements if management’s beliefs, estimates or opinions, or other factors, should change. Factors that could cause actual results to differ materially from those in forward-looking statements, include market prices, exploration and development successes, regulatory approvals, continued availability of capital and financing, and general economic, market or business conditions. Please see the public filings of the Company at www.sedar.com for further information.

Sranan Gold Corp. (CSE: SRAN) (FSE: P84) (Tradegate: P84) (‘Sranan’ or the ‘Company’) announces significant diamond drill results from the Randy’s Pit target at its Tapanahony Gold Project in Suriname. These results are from the first four drill holes of an ongoing 10,000-metre drill program and confirm that a significant gold system continues in and below the saprolite mineralization (see Figure1).

Initial diamond drilling at Randy’s Pit intersected significant gold in all of the first four holes. The best result was intersected in hole 25RADD-004 and assayed 64.0 metres (m) averaging 3.0 grams per tonne (g/t) gold (Au). This interval included 5 m averaging 33.5 g/t (or 1.2 ounces per ton) Au and 1 m grading 145.4 g/t (or 5.1 ounces per ton) Au. Fine visible gold is dispersed throughout the quartz vein in the interval from 167 to 168 m (see Figure 3).

To date, gold mineralization has been encountered through grab and trench sampling from Randy’s Pit up to 76.6 g/t (see Sranan release dated July 31, 2025) and trenching up to 36.6 g/t over 5 m (see release dated August 7, 2025). Sampling at Poeketi, which is located 3 km to the northwest along the trend of the major shear system from Randy’s Pit, assayed grab samples up to 108 g/t and 84 g/t Au (see release dated May 15, 2025).

Drilling has confirmed multiple high grade and bulk tonnage gold intercepts across a shear system that is at least 150 m wide and is being tested with trenching and drilling. Gold mineralization is present in both the saprolite and in the bedrock beneath and has been intersected in drillholes to at least 120 m in vertical depth (see Figure 2).

All bedrock intercepts exhibit strongly silica-sericite-ankerite alteration in basaltic host rocks that have been sheared into proto-mylonitic to mylonitic rock with grey to white quartz carbonate veins, transposed within the same sheared fabric. Pyrite and pyrrhotite are observed along shear planes, vein selvages as well as within late-stage fractures, which are typical for orogenic gold systems in the Guiana Shield. Intercepts within the saprolite have shown oxidized sulfide box works and sugary veins. All the shear zones are north-northwest striking dipping to the west.

Dr. Dennis LaPoint, EVP of Exploration and Corporate Development, commented: ‘These impressive intercepts are the result of careful geologic and logging observations by Sranan Gold and are the first holes in the evaluation of this significant gold system. The results of hole 25RADD-004 are truly impressive. We will continue to delineate the deformation history and geometry of this major structurally-controlled gold system as we extend drilling along strike and at depth. Drilling has not yet tested below the Randy’s Pit nor the extensions seen in trenching.’

Oscar Louzada, CEO of Sranan Gold, commented: ‘We now have very clear evidence of a well mineralized system in the Randy’s Pit area. We will continue to drill the Randy’s Pit target as well as explore along strike towards the Poeketi target in the near future so we can continuously attempt to determine the gold endowment potential of the 4.5-km-long Randy-Poeketi trend.’

Table 1: Mineralized zones in the first four diamond drilling holes by Sranan Gold.

* Intercepts above 0.3 g/t Au with internal dilution up to 5 m. All other intercepts reported are above 0.3 g/t Au with internal dilution up to 3 m. All intervals reflect apparent thickness based on the sample intervals from drill core. All anomalous results are based on the intervals sampled in drill holes. These intervals represent apparent widths or thicknesses that may be wider or thicker than true widths or thicknesses of intervals. As more drilling is completed, Sranan expects to gain better understanding of the relation between mineralized intervals, and the interpretation will be used in future calculations.

Figure 1: Location of drill intercepts in this news release with respect to Poeketi and Randy’s pits.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10997/273350_30c7b800f4013801_001full.jpg

Figure 2: Section 455425N showing the first four holes drilled by Sranan Gold in 2025.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10997/273350_30c7b800f4013801_002full.jpg

Figure 3: Visible gold, 1-2 mm fine free gold within shear planes, from 167 m to 168 m in hole 25RADD-004, grading 145.4 g/t Au.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10997/273350_sranan%20figure%203.jpg

Samples were prepared and assayed by Filab in Paramaribo, Suriname. All samples >2 g/t were re-assayed with 50 gm re-assay and gravimetric assay. Standard QA/QC procedures were followed which showed a satisfactory level of reproducibility. The Company notes that the drill intercepts may not represent true underlying mineralization. Core logging, photography and sampling are completed under strict industry standard QA/QC protocols (OREAS-certified reference materials, assayed course blanks, and duplicates of core). An independent lab will be used for confirmation of results.

Marketing Service Agreement
The Company has entered into an agreement on November 1, 2025 with Robert M. Sinn to provide promotional videos, editorial coverage and news release dissemination services for a six-month period. Mr. Sinn received a total fee of US$12,000.00 (inclusive of taxes) in cash consideration for the services provided. Mr. Sinn is a trader and portfolio manager based in Florida. To the Company’s knowledge, Mr. Sinn has no present interest, directly or indirectly, in the Company or its securities, or any right or present intent to acquire such an interest. There are no performance factors contained in the agreement between Mr. Sinn and the Company and Mr. Sinn will not receive any shares or options from the Company as compensation for services he will render.

Qualified Person
Dr. Dennis J. LaPoint, Ph.D., P.Geo., a ‘qualified person’ as defined under National Instrument 43-101, has reviewed and approved the scientific and technical information contained in this release. Dr. LaPoint is not independent of Sranan Gold, as he is the Company’s EVP of Exploration and Corporate Development.

About Sranan Gold
Sranan Gold Corp. is engaged in the business of mineral exploration and the acquisition of mineral property assets in Suriname and Canada. The Company’s flagship Tapanahony Project covers 29,000 hectares in one of Suriname’s most prolific artisanal gold mining districts. Sranan also owns the Aida Property in the Kamloops Mining Division, British Columbia, Canada.

For more information, please visit sranangold.com.

THE CANADIAN SECURITIES EXCHANGE HAS NOT APPROVED NOR DISAPPROVED THE CONTENT OF THIS PRESS RELEASE.

Forward-looking statements

Certain statements in this release constitute ‘forward-looking statements’ or ‘forward-looking information’ within the meaning of applicable securities laws including, without limitation, the timing, nature, scope and details regarding the Company’s exploration plans and results at its projects. Such statements and information involve known and unknown risks, uncertainties and other factors that may cause the actual results, performance or achievements of the Company, its projects, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements or information. Such statements can be identified by the use of words such as ‘may’, ‘would’, ‘could’, ‘will’, ‘intend’, ‘expect’, ‘believe’, ‘plan’, ‘anticipate’, ‘estimate’, ‘scheduled’, ‘forecast’, ‘predict’ and other similar terminology, or state that certain actions, events or results ‘may’, ‘could’, ‘would’, ‘might’ or ‘will’ be taken, occur or be achieved. These statements reflect the Company’s current expectations regarding future events, performance and results and speak only as of the date of this release. Further details about the risks applicable to the Company are contained in the Company’s public filings available on SEDAR+ (www.sedarplus.ca), under the Company’s profile.

Forward-looking statements and information contained herein are based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and reserves, the realization of resource and reserve estimates, metal prices, taxation, the estimation, timing and amount of future exploration and development, capital and operating costs, the availability of financing, the receipt of regulatory approvals, environmental risks, title disputes and other matters. While the Company considers its assumptions to be reasonable as of the date hereof, forward-looking statements and information are not guarantees of future performance and readers should not place undue importance on such statements as actual events and results may differ materially from those described herein. The Company does not undertake to update any forward-looking statements or information except as may be required by applicable securities laws.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/273350

Standard Uranium Ltd. (TSXV: STND,OTC:STTDF) (OTCQB: STTDF) (FSE: 9SU0) (‘Standard Uranium’ or the ‘Company’) is pleased to outline extensive exploration plans for 2026 and present a summary of successful 2025 exploration activities. Exploration plans in 2026 will include high-resolution geophysics and targeted drill programs across multiple uranium projects in the Athabasca Basin, northern Saskatchewan.

Highlights:

• Drilling All Year – Diamond drilling programs are planned across multiple projects in 2026, including the Company’s flagship Davidson River project, and partner-funded programs on the Corvo and Rocas projects.

• Building Value – The Company will drive meaningful exploration and build shareholder value through exploration on Davidson River while partner-funded programs provide additional exploration upside and minimize investor risk and dilution.

Jon Bey, CEO of Standard Uranium, commented, ‘2026 is poised to be the Company’s most active exploration season to date. With new option agreements in place for the Corvo and Rocas projects, and Davidson River now drill-ready with new high-priority target areas identified via the first Exosphere Multiphysics survey in the southwestern Athabasca, we are pleased to share that we continue to advance our uranium exploration portfolio toward discovery. We firmly believe the uranium market will remain one o the few bright spots in the investment landscape ahead.’

Figure 1. Athabasca Basin overview, highlighting Standard Uranium’s active projects.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10633/273368_a85d646c64fe5aed_001full.jpg

2026 Exploration Plans

Davidson River Project

New and refined target areas across the Warrior, Bronco, and Thunderbird conductor corridors have been identified through high-resolution 3D imaging of basement structures and potential alteration zones, providing key targeting information for spring 2026 drilling. The Company has secured all drill permits, signed Exploration Agreements with its Clearwater River Dene Nation (‘CRDN‘) partners, retained all essential vendors, and plans to initiate an aggressive drill program in early spring 2026 to begin testing new targets with approximately 8,000 metres planned.

Corvo Project

In December 2025, the Company plans to complete an extensive 50 m x 200 m ground gravity survey covering more than 29 km of conductive strike length, which will aid in identifying density anomalies that may represent hydrothermal alteration systems when coinciding with uranium fertile EM conductor trends.

Following the gravity survey, a skid-assisted diamond drill program totalling approximately 3,000 metres is planned for winter 2026, which will mark the first drill program on the Project in more than 40 years. Drilling will target high-priority areas including the never-before-drilled Manhattan Showing and newly-identified radioactive occurrences across the property.

Rocas Project

The Company completed a high-resolution ground gravity survey in 2024, and Convolutions Geoscience completed the processing, interpretation, and modeling of the gravity data. The survey identified several density-low anomalies coinciding with historical surface mineralization, lakebed geochemical anomalies, and cross-cutting fault zones along the Project’s known conductive exploration trends.

Standard Uranium plans to conduct the first-ever drill program on the Project in winter 2026, comprising approximately 1,800 metres, to begin testing high-priority zones along the main 7.5-kilometre magnetic low/EM conductive corridor which hosts several uranium showings and has remained untested to date.

Sun Dog Project

The Company plans to complete 3D modeling and inversions of EM and gravity data collected across the project in 2024 and 2025. Integration of geophysical products with surficial sampling and drilling results to date will help refine drill targets for a future partner-funded drill program.

2025 Exploration Summary

Davidson River Project

In May of 2025, a Fleet ExoSphere Multiphysics Survey was competed across key areas of the Thunderbird, Bronco, and Warrior trends. Combined 3D Ambient Noise Tomography (‘ANT‘) and Horizontal-to-Vertical Spectral Ratio (‘HVSR‘) velocity models and constrained ground gravity block models have been generated¹.

Distinct gravity-low anomalies interpreted as potential hydrothermal alteration zones have been identified across all three corridors. These overlap known EM conductors, extrapolated basement faults from previous drilling, and basement velocity lows – indicating structural disruption or favorable lithological contrasts. Several new targets also align with ALS GoldSpot EM SmartMatch anomalies generated through machine-learning comparisons to the neighbouring Arrow and Triple R uranium deposits.

Figure 2. Fleet ExoSphere Multiphysics surveys on the Davidson River Project.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10633/273368_a85d646c64fe5aed_002full.jpg

Sun Dog Project

In early 2025, MWH Geo-Surveys (Canada) Ltd. completed high-resolution ground gravity surveys across the Armbruster South, Wishbone, and McNie target areas, refining high-priority drill targets by identifying potential hydrothermal alteration zones associated with EM conductors.

Third-party processing of the gravity data by Convolutions Geoscience identified density-low bullseyes and high-contrast gravity zones. Where these anomalies coincide with faults, EM conductors, surface uranium showings, and lakebed geochemical anomalies, multiple new prospective target zones have been defined. Additionally, assays from the 2024 drill program, which tested the newly identified Wishbone target area, returned anomalous uranium in all eight drill holes².

The Sun Dog Project is currently under a three-year earn-in option agreement with Aero Energy Ltd. (TSXV: AERO).

Figure 3. High resolution ground gravity survey coverage of the Sun Dog Project

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10633/273368_a85d646c64fe5aed_003full.jpg

Atlantic and Rocas Projects

MWH Geo-Surveys (Canada) Ltd. completed high-resolution ground gravity surveys along known conductive exploration trends on the Rocas project and spanning the central claims of the Atlantic project. Inversion and modeling of high-resolution ground gravity surveys was completed for each project, identifying density-low anomalies coincident with surface mineralization, lakebed geochemical anomalies, EM conductors, and crosscutting faults.

These results have led to the delineation of new anomalous zones and drill targets.

Corvo Project

Earlier this year, the Company engaged Axiom Exploration Group Ltd., in partnership with New Resolution Geophysics, to complete a helicopter-borne Xcite time-domain electromagnetic and magnetic survey over the Corvo Project. The survey outlined several kilometres of bedrock conductors and magnetic features and enhanced the resolution of over ~29 km of conductive trends.

In July of 2025, Standard Uranium completed the Company’s first prospecting and mapping program on the project with the objective of ground-truth sampling historical uranium showings including the Manhattan Showing, which returned results up to 59,800 ppm uranium (total digestion). The Company identified zones of off-scale radioactivity (>65,535 cps on a handheld RS-125 Super-Spec) and collected hand samples which returned results ranging from 0.72% to 8.10% U₃O₈³, the highest grades ever reported on the project. New drill targets were developed based on previously undocumented radioactive showings, and an NI 43-101 technical report was filed on the project, highlighting high-grade surface mineralization at the Manhattan Showing⁴.

A high-resolution ground gravity survey is planned to be completed in 2026, which will cover the main conductive trends to identify potential hydrothermal alteration halos commonly associated with basement-hosted uranium mineralization. This additional data will further refine drill targets.

The Corvo Project is currently under a three-year earn-in option agreement with Aventis Energy Inc. (CSE: AVE).

Rocas Project

In September of 2025, Standard Uranium completed a detailed prospecting and mapping program on the Project. Historical grab sample assays have returned up to 0.498% U₃O₈, while preliminary results of the prospecting and mapping program identified anomalous radioactivity up to 33,000 cps, as well as 10 separate measurements of greater than 10,000 cps⁵. Geochemical assay results are anticipated in the coming months.

Paired with the results from a high-resolution ground gravity survey completed in 2024, this highlights potential alteration halos and identify high-priority exploration targets along well-defined structural corridors.

The Rocas Project is currently under a three-year earn-in option agreement with Collective Metals Inc. (CSE: COMT).

Incentive Grant

The Company also announces that it has granted a total of 1,475,000 incentive stock options (the ‘Options‘) and 3,350,000 restricted share units (the ‘RSUs‘) to certain directors, officers and consultants in accordance with its omnibus incentive plan. The Options vest and become exercisable in five equal parts, with the first 20% vesting upon the date of grant and each additional 20% vesting every three months over a twelve-month period. The Options are exercisable at a price of $0.11 until November 6, 2030. The RSUs will vest and settle in common shares of the Company on November 6, 2026, provided the holder continues to be eligible as of that date.

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.

References

¹ News Release: Standard Uranium Generates New High-Priority Uranium Targets at Flagship Davidson River Project Following ExoSphere Multiphysics Surveys, https://standarduranium.ca/news-releases/standard-uranium-generates-new-high-priority-uranium-targets-at-flagship-davidson-river-project-following-exosphere-multiphysics/

² News Release: Standard Uranium and Aero Energy Report New Gravity Survey Targets and Assay Results, Sun Dog Project, Northwest Athabasca Basin, https://standarduranium.ca/news-releases/standard-uranium-and-aero-energy-report-new-gravity-survey-targets-and-assay-results-sun-dog-project-northwest-athabasca-basin/

³ News Release: Standard Uranium Confirms High-Grade Uranium Mineralization up to 8.10% U₃O₈ at Surface on the Corvo Project, https://standarduranium.ca/news-releases/standard-uranium-confirms-high-grade-uranium-mineralization-at-surface-on-the-corvo-project/

⁴ News Release: Standard Uranium Announces Filing of NI 43-101 Technical Report on the Corvo Uranium Project, Northern Saskatchewan, https://standarduranium.ca/news-releases/standard-uranium-announces-filing-of-ni-43-101-technical-report-on-the-corvo-uranium-project-northern-saskatchewan/

⁵ News Release: Standard Uranium Confirms Strong Radioactivity at Surface During Successful Exploration Program at the Rocas Uranium Project, https://standarduranium.ca/news-releases/standard-uranium-confirms-strong-radioactivity-at-surface-during-successful-exploration-program-at-the-rocas-uranium-project/

^*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 one of the world’s premier uranium districts. The Company holds interest in over 235,435 acres (95,277 hectares) in the 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.

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: 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.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/273368

Rio Silver Inc. (the ‘Company’ or ‘Rio Silver’) (TSX.V: RYO,OTC:RYOOD) (OTC: RYOOF) is pleased to announce that, subject to the approval of the TSX Venture Exchange, the Company intends to settle (the ‘Transaction’) an aggregate of $293,250 of indebtedness (the ‘Debt’) owed to certain arm’s length and non-arm’s length creditors through the issuance of an aggregate of 1,396,428 common shares, at a deemed price of $0.21 per common share, and 420,238 common share purchase warrants (the ‘Warrants’) of the Company. 976,190 of the common shares (and no Warrants) will be issued to non-arm’s length creditors.

Each Warrant is exercisable into a common share at the price of $0.28 per common share, for a period of three years from the date of issue.

All common shares and Warrants issued to settle the Debt will be subject to a hold period of four months and one day from the date of issuance. The Transaction is subject to TSX Venture Exchange approval. Completion of the Transaction will allow the Company to improve its current working capital deficiency position.

ON BEHALF OF THE BOARD OF DIRECTORS OF Rio Silver INC.

Chris Verrico

Director, President and Chief Executive Officer

Neither the TSX Venture Exchange nor its Regulation Services Provider accepts responsibility for the adequacy or accuracy of this release.

For further information,

Christopher Verrico, President, CEO

Tel: (604) 762-4448

Email: chris.verrico@riosilverinc.com

Website: www.riosilverinc.com

This news release includes forward-looking statements that are subject to risks and uncertainties. All statements within, other than statements of historical fact, are to be considered forward looking. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include market prices, exploitation and exploration successes, continued availability of capital and financing, and general economic, market or business conditions. There can be no assurances that such statements will prove accurate and, therefore, readers are advised to rely on their own evaluation of such uncertainties. We do not assume any obligation to update any forward-looking statements except as required by applicable laws.