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Cosa Resources Corp. reports uranium exploration developments across its northern Saskatchewan portfolio in the Athabasca Basin. Company news centers on drilling, anomalous radioactivity and uranium assay results, target generation, and geological interpretation at projects including Murphy Lake North and Darby, where Cosa operates joint ventures with Denison Mines.
Updates also cover project expansions, claim additions, strategic collaboration activity, and option agreements affecting assets such as Orion and Aurora. Recurring disclosures describe Athabasca Basin exploration targets, graphitic basement structures, sandstone alteration, unconformity settings, and the company's mix of wholly owned and operated joint venture uranium projects.
Cosa Resources (OTCQB:COSAF, TSXV:COSA) reported voting results from its Annual General and Special Meeting held on June 10, 2026. Shareholders representing 37,017,237 common shares, or about 31.5% of outstanding shares, voted.
All items passed, including auditor reappointment, a seven-member board, the Omnibus Equity Incentive Compensation Plan, and election of seven directors, each receiving about 99.8%–100.0% support.
Cosa Resources announced its largest drill program at the Murphy Lake North uranium project, a joint venture with Denison Mines (NYSE American:DNN). Cosa operates and holds 70%, with Denison at 30%. The summer 2026 program, starting mid-June, will total about 6,000 metres in 15 drill holes focused on the Cyclone area, roughly 265 metres below surface.
Drilling will follow up winter 2026 intersections where hole MLN26-013 returned 5.0 metres averaging 0.55% U3O8 with elevated nickel and cobalt. Uranium mineralization remains open along strike for 600 metres in both directions, and Denison will participate in 2026 exploration funding to maintain its 30% interest.
Cosa Resources reported chemical assays from the Murphy Lake North joint venture with Denison Mines (NYSE American:DNN), confirming uranium mineralization along the Cyclone trend.
Best intercept in hole MLN26-013 returned 5.0 m at 0.55% U3O8, including 0.5 m at 1.7% U3O8, with notable nickel and cobalt values.
Cosa Resources reported May 6, 2026 drilling results from the Darby joint venture with Denison (TSX: DML; NYSE American: DNN). Cosa (operator, 70%) completed three winter holes at Charlie, Gamma and Delta, finding strongly anomalous sandstone uranium (DB26-39A: 5.6 ppm over 103.5 m; subinterval 9.5 ppm over 53.5 m) and a weak basement intersection (0.04% U3O8 over 0.5 m). Gamma returned a ~150 m graphitic fault corridor, hydrothermal alteration and 35 m of unconformity relief. Assays for Delta hole DB26-42 and Murphy Lake North remain pending; summer drilling planned to follow.
Cosa (TSXV: COSA) and Denison Mines (NYSE: DNN) reported anomalous radioactivity in three of five winter 2026 drill holes at the Murphy Lake North joint venture. Key highlights include a 5.0 m continuously anomalous interval in MLN26-013 with peak handheld gamma readings >13,000 cps, shallow mineralization near ~260 m depth, and open strike for at least 600 m east and west within a kilometre-scale Cyclone alteration corridor. Assays are pending and the drill remains on site for summer 2026 follow-up.
Cosa (TSXV: COSA) and Denison Mines (NYSE: DNN) report that drill hole MLN26-013 at Murphy Lake North intersected 5.0 metres of anomalous radioactivity up to 13,900 CPS in the upper basement, approximately 260 metres vertical depth. Core recovery through the mineralized zone was 100%. Drilling is ongoing and assays are pending; Cosa operates the JV with a 70% interest and Denison holds 30%.
Cosa Resources (TSXV: COSA / OTCQB: COSAF) is advancing uranium exploration in Saskatchewan's Athabasca Basin, planning drill campaigns over the next 12–24 months near the Cigar Lake mine and Hurricane deposit. The company cites a strong treasury and strategic partnerships to pursue high‑potential targets in the district.
Cosa Resources (TSXV: COSA / OTCQB: COSAF) is advancing uranium exploration in Saskatchewan's Athabasca Basin with planned drill campaigns over the next 12–24 months near the Cigar Lake mine and Hurricane deposit. The company cites a strong treasury and strategic partnerships to pursue high‑potential targets in a premier uranium district.
Cosa Resources announced additions of six claims totalling 2,669 hectares to its Darby, Murphy Lake North (MLN) joint ventures with Denison (DNN) and to its 100% owned Orion project on March 3, 2026. Darby and MLN remain 70% Cosa / 30% Denison, Cosa acting as operator. All claims were acquired for minimal cash consideration and reported as free of encumbrances. The Darby expansion targets the untested Delta conductor with first-pass drilling possible as early as H2-2026; MLN and Orion expansions target interpreted conductive extensions from ZTEM and prior surveys.
Cosa Resources (TSXV: COSA / OTCQB: COSAF) has granted Traction Uranium (CSE: TRAC) an option to earn up to an 80% interest in the Aurora uranium project effective February 10, 2026. Consideration includes over $9 million in partner-funded exploration, $1.5 million in cash payments and 5 million shares of Traction.
Cosa will act as initial project operator and collect an operator fee. Aurora has not been drilled since 1979; recent geophysics by Cosa identified priority targets. Cosa says its primary focus remains on Darby and Murphy Lake North JV programs.