Denison Mines (DNN) stock dips as partner Cosa maps winter uranium drilling near Cigar Lake
Toronto, January 21, 2026, 09:38 EST — Regular session Denison Mines Corp shares dipped about 0.3% to $3.68 by mid-morning Wednesday after partner Cosa Resources detailed winter drilling at two uranium exploration JV sites in Canada’s Athabasca Basin. Cosa plans roughly 2,500 metres at Darby and 1,200 metres at Murphy Lake North, where it holds a 70% stake, Denison 30%.…