Mr. Keith Bodnarchuk reports

COSA COMMENCES PARTNER FUNDED AIRBORNE RADIOMETRIC SURVEY AT THE AURORA URANIUM PROJECT, ATHABASCA BASIN, SASKATCHEWAN

Cosa Resources Corp. has commenced a property-wide airborne radiometric survey at the Aurora 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 are fully financed by Traction Uranium Corp. per the option agreement between Cosa and Traction dated Feb. 10, 2026. Traction has the right to earn up to an 80-per-cent interest in the Aurora project by sole-financing $9.15-million in exploration expenditures and completing cash and share payments.

Highlights:

• Radiometric survey and supporting work are 100 per cent financed by Traction;
• Project-wide surveying to be flown at 50-metre line spacing with the objective of identifying radiometric anomalies potentially indicative of near-surface uranium mineralization;
• Results to be used to guide a proposed 100-per-cent-partner-financed fall drilling program at Aurora.

Andy Carmichael, vice-president of exploration of Cosa, commented: "Aurora's proximity to infrastructure and the nearby Key Lake uranium mill and historical uranium mine make it an exciting project deserving of modern exploration. Given that sandstone cover at Aurora is thin to absent, when combined with geophysical work completed by Cosa in 2024, this partner-funded airborne radiometric survey has potential to generate compelling targets for a proposed Traction-funded fall drilling program."

Radiometric survey

Surveying will be completed by Calgary-based Special Projects Inc. (SPI), an experienced airborne geophysical survey contractor with expertise in radiometric and magnetic surveying. SPI's custom 16-detector focused gamma-ray spectrometer is designed to deliver high-resolution radiometric data capable of detecting subtle radioactive responses associated with mineralized boulders and outcrops. At Aurora, the survey will provide property-scale coverage at 50-metre line spacing with the objective of identifying and prioritizing high-quality targets for follow-up work. Surveying is expected to be completed in two weeks.

Next steps

Radiometric surveying will be followed by interpretation and integration with existing geophysical and drilling data. Results will be used to guide a proposed inaugural drill program at Aurora, tentatively scheduled to commence in early September. Drilling at Aurora is planned to follow completion of Cosa's continuing 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. 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.

About Cosa Resources Corp.

Cosa Resources is a Canadian uranium exploration company operating in Northern Saskatchewan. The portfolio comprises roughly 237,000 hectares across multiple underexplored 100-per-cent-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 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 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 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.

Qualified person

The company's disclosure of technical or scientific information in this news release has been reviewed and approved by Andy Carmichael, PGeo, 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.

We seek Safe Harbor.