Cosa Announces Partner-Funded Drilling Results from the Aurora Uranium Project, Athabasca Basin, Saskatchewan

Aurora drilling confirms key geology, but assays and resource data remain pending.

What the company is saying

Cosa Resources Corp. reports that drilling at the Aurora project, located 16 kilometres east of Cameco's Key Lake mill, was fully funded by Traction Uranium Corp. under a February 2026 option agreement. The agreement allows Traction to earn up to an 80% interest by sole-funding $9.15 million in exploration and making cash and share payments, with Cosa retaining operatorship. The company emphasizes the intersection of faulted graphitic basement rocks as a first for Aurora, framing this as a significant upgrade to the project's prospectivity. Andy Carmichael, Vice President, Exploration, highlights the validation of modern geophysical techniques and the exceptional location of the target area. The announcement stresses the technical progress and partnership with Denison Mines, Cosa's largest shareholder, but acknowledges that geochemical results are still pending. The tone is measured, focusing on technical milestones and future plans for expanded drilling in 2027.

What the data suggests

The release confirms that two drill holes totaling 541 metres were completed, targeting conductive anomalies identified by a 2024 VTEM survey and radiometric anomalies from a 2026 airborne Gamma Ray Spectrometer survey. Both holes intersected graphitic metasedimentary basement with brittle faulting, and drill hole AU26-01 also encountered granitic gneiss. No sandstone was intersected, as drilling was outside the Athabasca Basin rim, and no significant hydrothermal alteration was observed. The $9.15 million sole-funding commitment from Traction Uranium Corp. is material, representing the capital required for Traction to earn up to an 80% interest. Cosa's portfolio covers roughly 237,000 hectares in the Athabasca Basin, with Aurora spanning a 17-kilometre length. The technical claims are specific, but no geochemical or assay results are available yet, and no resource estimate is provided. The evidence supports early-stage technical progress but does not yet demonstrate economic mineralization.

Analysis

The announcement is factual and proportionate, focusing on the completion of two drill holes at the Aurora project and the structure of the earn-in agreement with Traction Uranium Corp. The technical disclosure is specific about the drilling program, but no geochemical or assay results are available yet, and the main forward-looking statements concern follow-up work planned for 2027. The $9.15 million capital commitment is significant, but it is tied to a staged earn-in and not an immediate outlay. There is no promotional language or exaggerated claims about discovery or imminent value creation; the tone is measured and technical. The absence of assay results and the long timeline to the next phase mean that any potential benefits are distant and uncertain, but the company does not overstate its progress. The gap between narrative and evidence is minimal, as the release avoids hype and sticks to operational facts.

Risk flags

• ●The absence of geochemical assay results means that the presence and grade of uranium mineralization are unconfirmed, leaving the project's economic potential uncertain. This is a critical risk for investors seeking near-term value catalysts.
• ●The staged earn-in structure requires Traction Uranium Corp. to sole-fund $9.15 million in exploration expenditures to earn up to 80% of the project. If Traction fails to meet these funding milestones, project advancement could be delayed or halted.
• ●The technical claims regarding the intersection of faulted graphitic basement rocks are not supported by detailed geological logs or assay data, which limits independent verification of the project's upgraded prospectivity.
• ●The timeline for follow-up drilling and target generation work extends into 2027, introducing long-term execution risk and delaying any potential resource definition or economic studies.

Bottom line

This update signals technical progress at Aurora, with the first intersection of faulted graphitic basement rocks and confirmation of target geology, but it stops short of demonstrating uranium mineralization or economic viability. The $9.15 million earn-in commitment from Traction Uranium Corp. is significant, but value realization depends on future funding and technical success. With geochemical results pending and follow-up drilling not expected until 2027, the timeline to a meaningful resource or economic assessment is long. Investors should treat this as an early-stage technical milestone rather than a near-term value catalyst. The most important next step will be the release of assay results, which will determine whether the intersected geology translates into uranium grades of economic interest.

Announcement summary

(TSXV:COSA) (OTCQB:COSAF) (FSE:SSKU) (CSE:TRAC) (OTCQB:TRCTF) (FSE:Z1K) (TSX:DML) Cosa Resources Corp. announced drilling results from the Aurora project, located in the southeastern Athabasca Basin approximately 16 kilometres east of Cameco's Key Lake mill and historical mine. Drilling at Aurora was fully funded by Traction Uranium Corp. (CSE: TRAC) under an option agreement dated 10 February 2026, which gives Traction the right to earn up to an 80% interest in the project by sole-funding $9.15 million in exploration expenditures and completing cash and share payments. Cosa remains the operator of the project. The 2026 drilling program followed up on two conductive anomalies identified by a 2024 Versatile Time-Domain Electromagnetic (VTEM) survey and located up-ice from uranium-source radiometric anomalies identified by an airborne Gamma Ray Spectrometer (GRS) survey funded by Traction. Two drill holes totaling 541 metres were completed in the southern portion of Aurora, both intersecting interpreted metasedimentary basement including graphitic units with intervals of brittle faulting and increased graphite content. Drill hole AU26-01 also intersected granitic gneiss interpreted to overlie the metasedimentary unit. Neither drill hole intersected sandstone, as both were outside the rim of the Athabasca Basin. Significant hydrothermal alteration was not intersected, but this marks the first known intersection of faulted graphitic basement rocks at Aurora. Geochemical results from the drilling are pending. Planning is underway for additional follow-up in 2027, likely to include advanced target generation work and a larger drill program. Aurora covers a 17-kilometre length of the southeastern rim of the Athabasca Basin, with sandstone cover less than 100 metres thick in the northern third and absent elsewhere. Airborne gravity gradient and VTEM surveying by Cosa in 2024 identified initial target areas, and a property-wide high-resolution airborne magnetic and radiometric survey in July 2026 identified or upgraded multiple target areas. Cosa Resources' portfolio comprises roughly 237,000 ha across multiple underexplored 100% owned and Cosa-operated joint venture projects in the Athabasca Basin region. In January 2025, Cosa entered a strategic collaboration with Denison Mines (TSX: DML), securing access to several additional highly prospective eastern Athabasca uranium exploration projects. Denison is Cosa's largest shareholder. Andy Carmichael, Vice President, Exploration for Cosa, reviewed and approved the technical disclosure in this release. Historical drilling results from Aurora are referenced in the Saskatchewan Mineral Assessment Database (74H-0024, 74H07-0017, 74H07-0031), but confirmatory relogging has not been completed due to unknown or destroyed core storage locations.

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