Mr. Jon Bey reports

STANDARD URANIUM RECEIVES DRILL PERMITS AND INITIATES GROUND GRAVITY SURVEY ON THE CORVO URANIUM PROJECT

Standard Uranium Ltd. has received exploration permits for the Corvo uranium project, currently under a three-year earn-in option agreement with Aventis Energy Inc. Work programs under the 18-month permit will include high-resolution geophysical surveys and the company's first drill program on the project beginning in January, 2026.

The company contracted MWH Geo-Surveys (Canada) Ltd. to complete an extensive 50-metre-by-200-metre ground gravity survey covering more than 29 kilometres of conductive strike length, which will aid in identifying density anomalies that may represent hydrothermal alteration systems coinciding with uranium fertile electromagnetic (EM) conductor trends. MWH mobilized to the project on Nov. 24, 2025, and the survey will comprise more than 5,000 individual gravity measurement stations.

Following completion of the gravity survey, a skid-assisted diamond drill program totalling approximately 3,000 metres is planned for the winter of 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 other newly identified radioactive occurrences across the property. Outcrop grab samples collected earlier this year returned uranium assays reaching a maximum of 8.10 per cent U3O8 (triuranium octoxide) at the Manhattan showing.

"The gravity survey now under way will further refine our target areas for drilling in Q1 2026," said Sean Hillacre, president and vice-president, exploration, of Standard Uranium. "Layering the new density results with the EM data from the Xcite TDEM survey we completed earlier this year, in addition to the surficial geological information gathered during our prospecting program will provide multiple high-priority drill targets for our maiden drill campaign this winter."

2025 exploration programs

Earlier this year, the company contracted Axiom Exploration Group Ltd. in partnership with New Resolution Geophysics to carry out a helicopter-borne Xcite time-domain electromagnetic and total field magnetic survey over the Corvo project. The survey totalled approximately 1,380 line kilometres with a traverse line spacing of 100 metres and tie-line spacing of 1,000 metres. The airborne TDEM survey outlines several kilometres of conductive anomalies and magnetic features in bedrock, effectively enhancing the resolution of more than 29 kilometres of conductive trends on the project.

Continuing geophysical interpretation and modelling are being completed to integrate historical surveys with newly collected data sets, which will provide high-priority drill targets and significantly derisk the project prior to modern drilling in 2026.

In July, 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 parts per million uranium (total digestion). The company identified zones of off-scale radioactivity (greater than 65,535 counts per second on a hand-held RS-125 superspectrometer) and collected hand samples, which returned results ranging from 0.72 per cent to 8.10 per cent U3O8, the highest grades ever reported on the project. New drill targets were developed based on previously undocumented radioactive showings, and a National Instrument 43-101 technical report was filed on the project, highlighting high-grade surface mineralization at the Manhattan showing.

The company believes the project is highly prospective for the discovery of shallow, high-grade, basement-hosted uranium mineralization akin to the Rabbit Lake deposit and the recently discovered Gemini mineralized zone. Located just outside the current margin of the Athabasca basin, Corvo boasts shallow drill targets with bedrock under minimal cover of glacial till.

Qualified person statement

The scientific and technical information contained in this news release has been reviewed, verified, and approved by Sean Hillacre, PGeo, president and vice-president, exploration, of the company and a qualified person as defined in NI 43-101, Standards of Disclosure for Mineral Projects.

Samples collected for analysis were sent to SRC Geoanalytical Laboratories in Saskatoon, Sask., for preparation, processing, and ICP-MS or ICP-OES multielement analysis using total and partial digestion and boron by fusion. Radioactive samples were tested using the ICP1 uranium multielement exploration package plus boron. All samples marked as radioactive upon arrival to the lab were also analyzed using the U3O8 assay (reported in weight per cent). SRC is an analytical laboratory certified under ISO/IEC 17025:2005 and the Standards Council of Canada. Blanks, standard reference materials and repeats were inserted into the sample stream at regular intervals in accordance with Standard Uranium's quality assurance/quality control (QA/QC) protocols. All samples passed internal QA/QC protocols and the results presented in this release are deemed complete, reliable and repeatable.

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 these 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 using a hand-held RS-125 superspectrometer and RS-120 superscintillometer. 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 Radiation Solutions Inc. (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 with readings measured by the handheld scintillometers for QA/QC purposes.

About Standard Uranium Ltd.

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 southwestern part of the Athabasca basin in Saskatchewan, comprises 10 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 undertested 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 landholdings. 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 in Saskatchewan, comprises 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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