20267 releases
Exploration UpdateCosa Announces Commencement of Summer Drilling Program at the Darby Uranium Joint Venture with Denison Mines
Drilling has begun at the Darby uranium project in northern Saskatchewan, located 10 kilometres west of Cameco's Cigar Lake Mine, where Cosa is operator with a 70% interest and Denison Mines holds 30%. Up to 2,500 metres is planned to test multiple targets on the Gamma and Bravo trends, following winter hole DB24-41, which defined a 100+ metre wide zone of graphitic basement faulting with 30+ metres of unconformity relief. The company reports $16 million in treasury and a separate partner-funded program at Aurora expected to start within days.
Drill resultsExploration UpdateCosa Announces Summer Drilling Results for Murphy Lake North Uranium Joint Venture with Denison Mines
A 13-hole, 6,752 metre summer drill program at the Murphy Lake North uranium joint venture in northern Saskatchewan tested the Cyclone trend over a 650-metre strike length; all 13 holes intersected moderate to strong alteration and/or structure, with several returning intervals of elevated radioactivity and assays pending. Hole MLN26-020C1 extended the basement alteration zone 36 m east of MLN26-017. Cosa holds 70% and Denison Mines 30%. The company reports C$16 million in treasury and plans drilling at Darby and Aurora, returning to MLN in early 2027.
Drill resultsExploration UpdateCosa Announces Results of Partner Funded Airborne Radiometric Survey at the Aurora Uranium Project, Athabasca Basin, Saskatchewan
A property-wide airborne radiometric and magnetic survey at the Aurora uranium project in the southeastern Athabasca Basin, Saskatchewan, flown at 50-metre line spacing by Special Projects Inc., identified several radiometric anomalies interpreted as related to a uranium-bearing source, some adjacent to or down-ice of previously identified basement features. The survey was fully funded by Traction Uranium Corp., which can earn up to 80% of Aurora by sole-funding $9.15 million in exploration plus cash and share payments. An inaugural drill program is scheduled for fall 2026.
Drill resultsCorporate AnnouncementCosa Resources Issues Deferred Payment Shares to Denison Mines
2,154,476 common shares were issued to Denison Mines at a deemed price of $0.69036 per share in full satisfaction of the deferred consideration under the November 26, 2024 acquisition agreement, subject to a four month and a day hold period. Denison's holdings increase to 23,895,340 shares, or 18.9% of Cosa on a partially-diluted basis, plus 2,417,679 warrants. Cosa states it is debt free following a recently completed $12 million bought deal financing.
NewsCosa Announces Commencement of Winter 2026 Drilling Campaign on Joint Ventures with Denison Mines
Drilling has begun at the Darby project in the eastern Athabasca Basin, Saskatchewan, with roughly 2,500 metres planned in winter 2026 to test up to four initial target areas identified by 2025 core relogging and reinterpretation. Approximately 1,200 metres will follow at Murphy Lake North, targeting a 1,200-metre gap in drilling along the Cyclone trend and a possible parallel trend 100 metres to the south. Cosa operates both joint ventures with a 70% interest; Denison Mines holds 30%.
Drill resultsCosa Announces Winter 2026 Drilling Plans for Joint Ventures with Denison Mines
Winter 2026 drilling is planned at the Darby and Murphy Lake North projects in the eastern Athabasca Basin, Saskatchewan, joint ventures in which Cosa holds 70% and operator status and Denison Mines holds 30%. About 2,500 metres are planned at Darby, testing up to four target areas on the Gamma, Charlie and Delta trends, with drilling expected to begin before the end of January. Approximately 1,200 metres are planned at MLN starting in March, following up 2025 results on the Cyclone trend.
Drill resultsCosa Appoints Justin Rodko as VP Corporate Developmentand Issues Shares to Denison
Justin Rodko has been promoted to Vice President, Corporate Development at Cosa Resources. The Company also issued 1,960,000 common shares to Denison Mines at a deemed price of $0.3891 per share as partial satisfaction of deferred consideration under the November 26, 2024 acquisition agreement, leaving approximately C$1,487,364 payable through future share issuances. Denison's holdings rose to 20,990,864 shares, or 18.26% of outstanding shares, plus 2,417,679 warrants. The shares are subject to a four-month-and-a-day hold period.
Management
20255 releases
Cosa and Denison Mines Approve 2026 Program for Joint Venture Uranium Projects
A 2026 exploration program has been approved for the Darby and Murphy Lake North (MLN) joint venture projects in the eastern Athabasca Basin, Saskatchewan, held 70% by Cosa and 30% by Denison Mines, with Cosa as operator. Work comprises four drilling campaigns — winter and summer drilling at both projects — plus property-scale DC resistivity surveying at MLN. Drilling is to begin at Darby in late January and conclude at MLN in late March, with DC resistivity starting in April. Cosa also granted 1,845,000 stock options at $0.33, vesting over two years and valid five years.
NewsCosa Closes Upsized C$7.5 Million Private Placement
Gross proceeds of C$7,500,000.74 were raised in a closed brokered private placement led by Haywood Securities, comprising 11,538,462 units at C$0.26, 7,537,690 charity flow-through units at C$0.398 and 5,000,000 flow-through shares at C$0.30, with half-warrants exercisable at C$0.37 until December 4, 2027. Flow-through proceeds will fund Canadian exploration expenses on Cosa's Athabasca Basin uranium projects in Saskatchewan by December 31, 2026. Denison Mines participated and now holds 18.59% of Cosa on a partially-diluted basis.
FinancingCosa Announces Upsized C$7.5 Million Private Placement
A previously announced private placement has been upsized to aggregate gross proceeds of up to approximately C$7,500,000, comprising up to 11,538,462 units at C$0.26, up to 7,537,690 charity flow-through units at C$0.398, and up to 5,000,000 flow-through shares at C$0.30. Units and charity FT units each include one-half warrant exercisable at C$0.37 for 24 months. Flow-through proceeds will fund qualifying expenditures on the Athabasca Basin uranium projects in Saskatchewan by December 31, 2026. Closing is expected on or about December 4, 2025.
FinancingCosa Announces C$5 Million Private Placement, Including Participation by Denison Mines
A private placement for aggregate gross proceeds of up to C$5,000,000 has been arranged with Haywood Securities and a syndicate of agents, comprising units at C$0.26 (minimum C$2,000,000), charity flow-through units at C$0.398, and flow-through shares at C$0.30, with warrants exercisable at C$0.37 for 24 months and a 15% over-allotment option. Denison Mines, Cosa's largest shareholder at approximately 18.8% non-diluted, will subscribe for units to maintain roughly 19.95% partially diluted. Closing is expected on or about December 4, 2025, funding Athabasca Basin uranium exploration in Saskatchewan.
FinancingCosa Appoints David Cates, President and CEO of Denison Mines, as Strategic Advisor
David Cates, Director, President and CEO of Denison Mines Corp., has been appointed Strategic Advisor to Cosa Resources. Cosa holds a 70% interest in and operates the Murphy Lake North, Darby and Packrat joint ventures with Denison, and plans 2026 exploration drilling at Darby and Murphy Lake North in the eastern Athabasca Basin, Saskatchewan. Cosa also entered a Marketing Services Agreement with Oak Hill Financial Inc. for an initial two-month term at $10,500 per month, subject to TSXV approval.
Management