MetalNRG plc (NEX:MNRG), the natural resource investing company quoted on the NEX Exchange Growth Market in London is pleased to announce that, it has entered into a binding option agreement to sell it's 15.38% stake in private company, US Cobalt Pty Ltd (“US Cobalt”), the owner of Goodsprings Cobalt and Base Metals Project, located in the State of Nevada, USA, to Tyranna Resources Limited (“Tyranna”), an ASX listed exploration company (ASX: TYX).