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Cosa Resources Corp. (TSXV: COSA) (OTCQB: COSAF) (FSE: SSKU) ("Cosa" or the "Company") is pleased to report results of a property-wide airborne radiometric survey at the Aurora project ("Aurora" or the "Project"). Aurora is located in the southeastern Athabasca Basin approximately 16 kilometres east of Cameco's Key Lake Mill and historical Mine. The survey and supporting work were fully funded by Traction Uranium Corp. ("Traction") (CSE: TRAC) (OTCQB: TRCTF) (FSE: Z1K) per the option agreement (the "Agreement") between Cosa and Traction dated 10 February 2026. Traction has the right to earn up to an 80% interest in the Aurora project by sole-funding $9.15 million in exploration expenditures and completing cash and share payments.
Highlights
- Multiple uranium-source radiometric anomalies identified in proximity to prospective basement features
- High-resolution magnetic model significantly advances the understanding of basement geology
- Planned fall 2026 follow-up drill program to be 100% funded by Traction
Andy Carmichael, VP Exploration of Cosa commented: "Excellent work by SPI has delivered high-resolution magnetic and radiometric data sets that have advanced our understanding of prospectivity and basement geology at Aurora. In combination with electromagnetic and gravity surveying completed by Cosa in 2024, this survey has identified or improved several target areas worthy of follow up work. We are looking forward to commencing a planned fully partner-funded fall drilling program at Aurora later this year following completion of drilling at the Company's Murphy Lake North and Darby joint ventures with Denison Mines."
Radiometric Survey Results
Surveying was completed by Calgary-based Special Projects Inc. ("SPI"), an experienced airborne geophysical survey contractor with expertise in radiometric and magnetic surveying. Flown at 50-metre line spacing, the survey successfully produced high-resolution magnetic data and identified several radiometric anomalies interpreted to be related to a uranium bearing source. Of the radiometric anomalies identified, several are adjacent to or down-ice of prospective basement features previously identified by Cosa (Figure 2).
Next Steps
Interpretation and integration with existing geophysical and drilling data is ongoing. Results will be used to guide a proposed inaugural drill program at Aurora currently scheduled to commence in fall 2026. Drilling at Aurora is planned to follow completion of Cosa's ongoing drilling program at the Murphy Lake North joint venture, and planned summer drilling at the Darby joint venture.
About Aurora
Aurora covers a 17-kilometre section of the southeastern rim of the Athabasca Basin located 16 kilometres east of Key Lake, the site of an operational uranium mill and past producing uranium mine, and 40 kilometres south of the GMZ (Figure 1). Sandstone cover is expected to be less than 100 metres thick in the northern third of Aurora and absent in the remainder. Though no diamond drilling has been completed on the Project since 1979, review of historical drill hole logs has identified several zones of hydrothermal alteration. Airborne gravity gradient and Versatile Transient Electromagnetic (VTEM) surveying completed by Cosa in 2024 identified initial target areas at Aurora (Figure 2). The project is considered drill ready after completion of a property-wide high-resolution airborne magnetic and radiometric survey that identified or upgraded multiple target areas in July 2026.
Figure 1 - The Aurora Project Location
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Figure 2 - The Aurora Project Target Areas
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About Cosa Resources Corp.
Cosa Resources is a Canadian uranium exploration company operating in northern Saskatchewan. The portfolio comprises roughly 237,000 ha across multiple underexplored 100% owned and Cosa-operated joint venture projects in the Athabasca Basin region, the majority of which reside within or adjacent to established uranium corridors.
In January of 2025, the Company entered a transformative strategic collaboration with Denison Mines (TSX: DML) (NYSE American: DNN) that has secured access to several additional highly prospective eastern Athabasca uranium exploration projects. As Cosa's largest shareholder, Denison gains exposure to Cosa's potential for exploration success and its pipeline of uranium projects.
The Company's primary focus through the remainder of 2026 will be drilling at the Murphy Lake North and Darby projects in the eastern Athabasca Basin. Drilling at Murphy Lake North will follow up uranium mineralization within an extensive zone of strong structure and hydrothermal alteration at the Cyclone trend. Drilling at Darby will follow up on intersections of anomalous geochemistry, structure, and zones of hydrothermal alteration from both winter 2026 drilling and historical drilling.
Cosa's award-winning management team has a track record of success in Saskatchewan. In 2022, members of the Cosa team were awarded the AME Colin Spence Award for the discovery of the Hurricane uranium deposit. Cosa personnel led teams or had integral roles in the discovery of Denison's Gryphon deposit and held key roles in the founding of both NexGen and IsoEnergy.
About Traction Uranium Corp.
Traction Uranium Corp. (CSE: TRAC) (OTC: TRCTF) (FRA: Z1K) is in the business of mineral exploration and the development of discovery prospects in Canada, including its uranium project in the world-renowned Athabasca Region.
Technical Disclosure
Historical drilling results from Aurora are available within the Saskatchewan Mineral Assessment Database references 74H-0024, 74H07-0017, and 74H07-0031. Confirmatory relogging of these drill holes has not been completed as the core storage locations are unknown or have been destroyed by wildfire. Ground truthing of selected radiometric anomalies is planned to validate the airborne survey results and prioritize targets for the planned drilling program.
Qualified Person
The Company's disclosure of technical or scientific information in this press release has been reviewed and approved by Andy Carmichael, P.Geo., Vice President, Exploration for Cosa. Mr. Carmichael is a Qualified Person as defined under the terms of National Instrument 43-101. This news release refers to neighbouring properties in which the Company has no interest. Mineralization on those neighbouring properties does not necessarily indicate mineralization on the Company's properties.
Contact
Keith Bodnarchuk, President and CEO
info@cosaresources.ca
+1 888-899-2672 (COSA)
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
Cautionary Statements
This press release contains forward-looking information within the meaning of Canadian securities laws (collectively "forward-looking statements"). Forward-looking statements are typically identified by words such as: believe, expect, anticipate, intend, estimate, plans, postulate and similar expressions, or are those, which, by their nature, refer to future events. All statements that are not statements of historical fact are forward-looking statements. These forward-looking statements or information may relate to anticipated exploration, development and/or expansion activities, including exploration of the Company's current Projects; the collaboration with Denison, including the Joint Venture, and the anticipated benefits thereof; and the outlook regarding Cosa's business plans and objectives.
Such forward-looking information and statements are based on numerous assumptions, including among others, that the results of planned exploration activities are as anticipated, the cost of planned exploration activities are as anticipated, that general business and economic conditions will not change in a material adverse manner, that financing will be available if and when needed and on reasonable terms, that third party contractors, equipment and supplies and governmental and other approvals required to conduct Cosa's planned exploration activities will be available on reasonable terms and in a timely manner. Although the assumptions made by Cosa in providing forward-looking information or making forward-looking statements are considered reasonable by management at the time, there can be no assurance that such assumptions will prove to be accurate.
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. Such factors and risks include, among others: Cosa may require additional financing from time to time in order to continue its operations which may not be available when needed or on acceptable terms and conditions acceptable; Cosa may not be able to maintain compliance with its contractual obligations with third parties; Cosa may not be able to maintain compliance with extensive government regulation applicable to its operations; domestic and foreign laws and regulations could adversely affect Cosa's business and results of operations; the stock markets have experienced volatility that often has been unrelated to the performance of companies and these fluctuations may adversely affect the price of Cosa's securities, regardless of its operating performance; the ongoing military conflict in Ukraine, and other risk factors set out in Cosa's public disclosure documents.
The forward-looking information contained in this news release represents the expectations of Cosa 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. Cosa does not undertake any obligation to update these forward-looking statements in the event that management's beliefs, estimates or opinions, or other factors, should change.
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