NexGen Energy Hires Senior and Exploration Geologists

May 22, 2013

VANCOUVER, BC - NexGen Energy Ltd. (TSX.V:NXE)
(the "Company" or "NexGen") is pleased to announce the addition of two highly qualified and experienced uranium geologists to its technical team and receipt of a drilling permit for Radio.

  • Addition of two highly qualified and experienced uranium geologists.
  • Radio drilling permit received

Geological Appointments

James Sykes has joined NexGen as a Senior Geologist. Mr. Sykes joins NexGen from Rio Tinto. He originally commenced with Hathor in 2007 prior to the discovery of Roughrider and transferred to Rio from Hathor in February 2012 as part of its acquisition of Hathor. Mr. Sykes was a key member of the team that constructed the original 3D geological model of the Roughrider system, which ultimately led to the discovery of the Roughrider East and Far East deposits. Prior to Hathor, Mr. Sykes was a Project Geologist with Denison Mines Corp.

Matthew Schwab has joined NexGen as an Exploration Geologist. Mr. Schwab also joins NexGen from Rio Tinto having also worked previously for Hathor on the Roughrider deposit. Mr. Schwab was a member of the technical team responsible for defining the mineralized zones of the Roughrider Deposit and exploring the Roughrider property for further zones of mineralization.

Radio Drilling Permit

At the Company's Radio Project, located immediately adjacent to Rio Tinto's Roughrider deposit, the application for summer drilling has been approved. Drilling is expected to commence in late June for a 4,400 metre diamond drilling program focused on the target area immediately east of Radio's western boundary that covers the interpreted structural extension that hosts the adjacent Roughrider discovery.

Leigh Curyer, NexGen's CEO commented, "the appointment of Mr Sykes and Mr Schwab to our technical team in joining Andrew Browne, Vice President of Exploration & Development, is a significant endorsement of the uranium prospectivity of our properties. Their uranium exploration expertise and knowledge of the Roughrider deposits is highly valuable and extremely relevant to our portfolio of properties. It is with pleasure that I welcome them aboard."

About NexGen

NexGen is a British Columbia corporation with a focus on the acquisition, exploration and development of Canadian uranium projects. NexGen has a highly experienced team of exploration professionals with a track record in the discovery of unconformity-style uranium deposits in Canada.

NexGen owns a portfolio of highly prospective uranium exploration assets in the Athabasca Basin, Saskatchewan, Canada, including, an option to earn a 70% interest in the Radio Project, immediately adjacent to Rio Tinto's Roughrider Deposit and a 100% interest in Rook 1, immediately adjacent to the North East of Patterson Lake South (PLS) and holds one of the most dominant land positions on the Western side of the Athabasca Basin.

Leigh Curyer, Chief Executive Officer

NexGen Energy Ltd.

Forward-Looking Information

This news release contains "forward-looking information" within the meaning of applicable Canadian securities laws. Generally, but not always, forward-looking information is identifiable by the use of words such as "expects" "anticipates", "believes", "projects", "plans", and similar expressions. Forward-looking information is prospective and by its nature requires the Company to make certain assumptions and is subject to inherent risks and uncertainties. Such information is not a guarantee of future performance and undue reliance should not be placed on forward-looking information. Although the assumptions made by the Company in providing forward-looking information are considered reasonable by management at the time the forward-looking information is given, there can be no assurance that such assumptions will prove to be accurate. Forward-looking information also involves known and unknown risks and uncertainties, which may cause actual results in future periods to differ materially from any projections of future results expressed or implied by such forward-looking information, including changes in exploration programs based upon results of exploration; future prices of metal; availability of third party contractors; availability of equipment and supplies; failure of equipment to operate as anticipated; accidents, effects of weather and other natural phenomena; environmental risks; community relations; and delays in obtaining governmental approvals or financing. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated, estimated or intended. NexGen undertakes no obligation to update or reissue forward-looking information as a result of new information or events except as required by applicable securities laws. The reader is cautioned not to place undue reliance on forward-looking information.

The TSXV has neither approved nor disapproved the contents of this press release. Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of the TSXV) accepts responsibility for the adequacy or accuracy of this release.