Cosa Reports 5.0 metres of Anomalous Radioactivity up to 13,900 CPS Intersected at Murphy Lake North Joint Venture with Denison Mines Cosa Resources Corp. (TSXV: COSA) (OTCQB: COSAF) (FSE: SSKU) (" Cosa" or the " Company") is pleased to report that the first winter 2026 drill hole at the Company's Murphy Lake North Project (" MLN" or the " Project") has intersected

#DNN #COSAF Cosa Reports 5.0 metres of Anomalous Radioactivity up to 13,900 CPS Intersected at Murphy Lake North Joint Venture with Denison Mines

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Cosa Announces Expansions to Orion Project and Joint Ventures with Denison Mines 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.

#DNN #COSAF Cosa Announces Expansions to Orion Project and Joint Ventures with Denison Mines

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Cosa Announces Winter 2026 Drilling Plans for Joint Ventures with Denison Mines Cosa (TSX-V: COSA / OTCQB: COSAF) and Denison (TSX: DML / NYSE: DNN) announced winter 2026 drill programs at the Darby and Murphy Lake North (MLN) joint-venture projects in the eastern Athabasca Basin, near Cigar Lake and Hurricane. Cosa (operator, 70%) and Denison (30%) plan ~2,500 metres at Darby and ~1,200 metres at MLN to test historical anomalous uranium in lower sandstone and graphitic basement faults. Denison will participate in funding 2026 MLN exploration to maintain its 30% interest. Camp construction is underway with Darby drilling expected to start before end of January and MLN in March.

#DNN #COSAF Cosa Announces Winter 2026 Drilling Plans for Joint Ventures with Denison Mines

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