Vancouver, British Columbia--(Newsfile Corp. - July 25, 2024) - Standard Uranium Ltd. (TSXV: STND) (OTCQB: STTDF) (FSE: 9SU0) ("Standard Uranium" or the "Company") is pleased to announce that drilling activities have commenced at the Company's 48,443-acre Sun Dog Uranium Project ("Sun Dog", or the "Project") located near Uranium City in northwestern Saskatchewan (Figure 1). Field crews have arrived at the Project and drilling has commenced on schedule.

The Project is currently under a three-year earn-in option agreement (the "Option") with Aero Energy Ltd. ("Aero") (TSXV: AERO) that was executed on October 20, 2023. The program will be funded by Aero and will be operated by Standard Uranium.

Highlights:

• Drilling Underway: Drilling activities began on July 23^rd, 2024. Approximately 1,000-1,200 metres are planned across 5-7 drill holes targeting shallow high-grade¹ basement-hosted uranium mineralization, beginning with the Wishbone target area (Figure 2).

• Robust & Shallow Drill Targets: Drill plans comprise helicopter-supported diamond drilling focused on high-priority uranium targets refined by geophysical work completed by the Company earlier this year, bolstered by recent prospecting and identification of strong radioactivity at surface within ideal uranium host rocks.

• Untapped Uranium Potential: One diamond drill will focus on high-priority target areas along refined VTEM^TM corridors with the proven exploration thesis of focusing on major conductor trends associated with cross-cutting faults and surficial radioactivity expressions.

• Fully Funded: Aero Energy will be funding 100% of the program to meet the year-one expenditure requirements under the Option Agreement.

The Company considers uranium mineralization with concentrations greater than 1.0 wt% U₃O₈ to be "high-grade".

Standard Uranium President/VP of Exploration Sean Hillacre at Sun Dog - 11,000 CPS at Surface

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"The team and I are thrilled to announce that the drill is spinning on our exciting new Wishbone target area, kicking off our summer exploration season," said Sean Hillacre, President & VP Exploration for the Company.

Figure 1. Overview of the Sun Dog Project highlighting 2024 summer drill target areas, high-grade uranium occurrences, and EM-conductors.

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Figure 2. Detail map of the Wishbone target area highlighting newly discovered mineralized graphitic metapelite outcrop, anomalous surface radioactivity***, and untested VTEM conductors. The first drill hole of the 2024 program will test the Wishbone target for the first time.

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2024 Summer Drill Program

The Standard Uranium team has arrived on site and diamond drilling on the first hole is currently underway. The summer program will comprise approximately 1,000-1,200 metres of drilling at high-priority target areas following completion of a VTEM Plus survey and geophysical modeling earlier this year.

Sun Dog covers an area of 48,443 acres in nine mining claims, located 15 km from Uranium City on the northern margin of the Athabasca Basin. It hosts the historical Gunnar Uranium Mine, discovered in 1952, which doubled Canada's uranium production and became the largest uranium producer globally in 1956. The Gunnar Mine produced approximately 18M lbs of U₃O₈ between 1953 and 1981^1,2.

Target Selection for 2024 Drill Campaign

Targets were selected and prioritized through an iterative approach working in collaboration with Aero and Convolutions Geoscience teams. Recent prospecting and mapping at the Wishbone, McNie, and Spring-Dome target areas has outlined multiple outcrops of favourable uranium host-rocks, including graphitic pelite, which is commonly radioactive over >200 m of collective strike length. Structural measurements and radioactivity mapping has further refined drill targets in these areas.

Targets are ranked and prioritized based on geophysical signature, geological/structural setting, proximity to historical uranium occurrences of interest, and the Company's recent prospecting and mapping campaign. A total of seven (7) priority targets were identified (Figure 1) to encompass a variety of target types and provide a third phase of regional testing across the Project:

Wishbone Target Area:

• - Approximately five kilometres of strike length along a regional scale anticline, defined by strong VTEM conductors with associated radioactivity that has never been drill tested.

• - Graphitic pelitic rocks have been mapped along both fold limbs, hosting strong radioactivity up to 22,300 cps.

• - Mineralized cross-cutting faults have been mapped in the overlying rocks which intersect the uranium-bearing graphitic pelite unit.

• - Historical outcrop sampling at the northwestern graphitic pelite exposure returned assay results of 0.32% U₃O₈ and 0.30% Cu (SMDI #2095).

McNie Target Area:

• - Approximately four kilometres of untested VTEM conductor strike length.

• - The corridors are off-set by significant E-W trending regional faults, which host known uranium showings to the east towards the newly discovered zone at target H15 on the Murmac Project, and to the west towards the past-producing Gulch uranium mine.

Spring-Dome Target Area:

• - Historically explored Gunnar-style target focused on mineralized carbonatized granites and pitchblende veins and fractures.

• - The Spring-Dome area has been historically drilled with intersections over 1.0% U₃O₈; however, several showings of uranium south of known drilling with values up to 17.4% U₃O₈ and radioactivity readings >65,535 cps have not been properly drill-tested.

• - The Company is currently evaluating the priority of this area through prospecting, mapping, and geological modeling. The target area south of Spring Lake represents the possibility of a uranium deposit akin to the nearby past-producing "Beaverlodge-style" Gunnar mine.

Other high-priority target areas including Haven, Java, and Skye are being reviewed with new datasets and models for a possible winter drill program in 2025.

*Natural gamma radiation in outcrop reported in this news release was measured in counts per second (cps) using a handheld RS-125 super-spectrometer. Readers are cautioned that scintillometer and gamma probe 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 Company considers uranium mineralization with concentrations greater than 1.0 wt% U₃O₈ to be "high-grade".

*** The Company considers radioactivity readings greater than 300 counts per second (cps) to be "anomalous".

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.

Historical data disclosed in this news release relating to sampling results on the Sun Dog Project is 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 will 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 the Project.

About Standard Uranium (TSXV: STND)

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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 209,867 acres (84,930 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 has successfully completed three joint venture earn in partnerships on their Sun Dog, Canary, and Atlantic projects totaling over $23.8M in work commitments over the next three years from 2024-2027.

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 eight eastern Athabasca projects comprise thirty mineral claims over 32,838 hectares. 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.

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References

1. 2022 Winter Mineral Assessment Report, Sun Dog Property, Northern Saskatchewan, Canada, Standard Uranium, 2022
2. Information obtained from Saskatchewan Mineral Deposit Index and historical report from Uranium City Resources, 2007

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, 2023.

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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