Standard Uranium firms up deal to acquire Rocas project

Mr. Sean Hillacre reports STANDARD URANIUM EXECUTES DEFINITIVE AGREEMENT TO OPTION ROCAS URANIUM PROJECT AND INITIATES INAUGURAL EXPLORATION PROGRAM Standard Uranium Ltd. has signed a definitive property option agreement, dated Sept. 26, 2025, with Collective Metals Inc., an arm's-length party. Pursuant to the option agreement, the optionee has been granted the option to acquire a 75-per-cent interest in the 4,002-hectare Rocas project located in the eastern Athabasca basin region. Rocas project highlights: Prime location -- More than 7.5 kilometres of exploration strike length along a strong northeast-southwest magnetic low trend coincident with EM conductors and crosscutting faults, providing shallow drill targets south of Key Lake. Uranium at surface -- Mineralized outcrop grab samples along approximately 900 metres of strike length, grading up to 0.5 wt. per cent U3O8 (triuranium octoxide) and never drill tested. 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. Inaugural exploration -- The Standard Uranium technical team mobilized to the project Sept. 30, 2025, to undertake a detailed mapping, prospecting and sampling program to ground-truth historical uranium showings at surface. Sean Hillacre, Standard Uranium president and vice-president of exploration, stated: "We are very pleased to have executed the Rocas option deal with our new partners at Collective Metals quickly, allowing our team to get boots on the ground before the snow flies in Saskatchewan. This inaugural program will allow us to build a comprehensive understanding of the geology across Rocas prior to a maiden drill program, in addition to ground-truthing historic uranium occurrences through scintillometer prospecting and resampling." About the Rocas project The Rocas project comprises 4,002 hectares, located 75 kilometres southwest of the Key Lake mine and mill facilities along Highway 914, and approximately 72 kilometres south of the present-day margin of the Athabasca basin. The project was acquired via staking in May, 2023, and recently expanded by an additional 931 hectares. Standard Uranium holds a 100-per-cent interest in the property. The project covers 7.5 kilometres of a northeast-trending magnetic low/electromagnetic (EM) conductor corridor which hosts several uranium showings, including historical mineralized outcrop grab samples along approximately 900 metres of strike length, grading up to 0.5 wt. per cent U3O8. Notably, none of the historical uranium occurrences have been drill tested. Historical airborne EM work in 2017 defined conductive trends on the project west of and subparallel 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 crosscutting structures. Additionally, a 2007 field sampling program identified anomalous lakebed geochemical anomalies that statistically rank as greater than 95th percentile U (uranium), Co (cobalt), V (vanadium) and Zn (zinc) along the conductor corridor, including high U/Th ratios. Exploration plans The company's technical team will mobilize to the Rocas project on Sept. 30, 2025, to undertake a detailed mapping, prospecting and sampling program to ground-truth historical uranium showings at surface. Collected grab samples will be transported to Saskatchewan Research Council Geoanalytical Laboratories in Saskatoon, Sask., for geochemical analysis. In 2024, the company contracted MWH Geo-Surveys (Canada) Ltd. to complete a high-resolution ground gravity survey along known conductive exploration trends on the Rocas project. The survey was designed to aid in the identification of potential zones of hydrothermal alteration of host rocks associated with uranium mineralization events. Multiple new drill target zones have been identified on the Rocas project, outlined via the confluence of low gravity anomalies, historical surface mineralization, lakebed geochemical anomalies, EM conductors and crosscutting fault zones. Continuing geophysical interpretation and modeling is planned throughout 2025 to integrate historical results with newly collected data sets, which will provide high-priority drill targets and significantly derisk the project prior to modern drilling next year. The company believes the project is highly prospective for the discovery of shallow, high-grade basement-hosted uranium mineralization. Located south of the current margin of the Athabasca basin, Rocas boasts shallow drill targets with bedrock under minimal cover of glacial till. Three-year earn-in option The option is exercisable by the optionee completing cash payments and share issuances, and incurring the following exploration expenditures on the project. Prior to exercise of the option, the company will act as the operator of the project and will be entitled to charge a 10-per-cent fee on expenditures in year 1, increasing to 12 per cent in year 2 and year 3. Following successful completion of the obligations of the option (that is, at the end of year 3), optionee will acquire a 75-per-cent equity in the property, with Standard retaining 25 per cent as well as a 2.5-per-cent net smelter returns royalty on the project, of which 1.0 per cent may be purchased back at any time for a one-time cash payment of $1-million. The parties intend on forming an unincorporated joint venture for the further development of the project. No finders' fee is payable by the company in connection with the option. 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 of exploration of the company, and a qualified person as defined in National Instrument 43-101. 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. 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 southwest part of the Athabasca basin, 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 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, 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. We seek Safe Harbor.