NexGen Energy Ltd. reported assay results for the final thirty-one holes from South Arrow as part of recently concluded summer drilling program on 100% owned, Rook I property, in the Athabasca Basin, Saskatchewan. All assay results from the recently discovered shallow mineralization at South Arrow have been returned and interpreted. Located just 400 meter south of the Arrow Deposit, South Arrow consists of a series of sub-parallel stacked mineralized shears locally anchored by accumulations of semi-massive to massive pitchblend where uranium mineralization has been intersected over a strike length of 290 meter. Assay results for the final 28 drill holes from the Arrow Deposit remain pending. Multiple pre-feasibility stage technical studies, including geotechnical work, hydrogeological work, and metallurgy, continue in advance of the maiden Pre-Feasibility Study to be published in the third quarter of 2018.