VANCOUVER, BRITISH COLUMBIA--(Marketwire - Dec. 13, 2012) - NexGen Energy Ltd. ("NexGen") is pleased to announce that it has completed a private placement with Tigris Uranium Corp ("Tigris") 3.75 million units of NexGen at a price of 40 cents per unit for gross proceeds of $1.5M. Each unit comprises one common share of NexGen and one-half of one common share purchase warrant. Each whole common share purchase warrant entitles the holder thereof to purchase one common share of NexGen for 60 cents for a period of 24 months. The subscription by Tigris is the first tranche of a $5M private placement ("Private Placement") being led by Macquarie Capital Markets Canada Ltd. consisting of both subscription receipts (each of which shall convert into one unit upon completion of the transaction with Clermont as defined and described below) and flow-through common shares, at a price of 40 cents per subscription receipt or flow-through share, as the case may be. 

As previously announced, NexGen has also entered into a letter of intent with Clermont Capital Inc. (TSX VENTURE:XYZP) ("Clermont") (see Clermont's news release dated Nov. 30, 2012) for the reverse take-over of Clermont by NexGen. The reverse take-over will constitute Clermont's "qualifying transaction" for the purposes of Policy 2.4 of the TSX Venture Exchange and is scheduled to close in Q1 2013.

The Private Placement is scheduled to close on or around December 18, 2012, immediately after completion of the previously announced transaction with Mega Uranium Ltd. ("Mega") (News - Market indicators). On November 15, 2012, NexGen and Mega announced the execution of a definitive agreement under which NexGen will acquire the majority of Mega's Canadian uranium projects, located in the Athabasca Basin, Saskatchewan and the Thelon Basin, Nunavut (collectively "Canadian Projects"), in exchange for an aggregate of 16,406,815 common shares of NexGen (subject to adjustment pursuant to the terms of the definitive agreement). 

NexGen believes that together, the Mega Canadian Projects and NexGen's Radio project will represent one of the most promising uranium exploration portfolios in Canada (see Figure 1 below), including the following projects in the uranium-prolific Athabasca Basin: 

• Radio: NexGen has an option to acquire an initial 70% interest in the Radio, which is situated directly to the east of Rio Tinto Group's Roughrider property (see Figure 2 below). The Radio property covers interpreted eastern extensions of the E-W structure that hosts Roughrider, Roughrider Far East and Fission Energy Corp.'s J-zone. NexGen has recently secured drill permits for the Radio project and anticipates commencing drilling in Q1 2013. 
  
  
• Rook 1: The Rook I property is located directly to the northeast of the Patterson Lake South property being explored by Fission Energy Corp. and its joint venture partner Alpha Minerals Inc. who recently reported results including a reported intersection of "12.5M @ 2.49% U3O8 with assays to WITH ASSAYS TO 11.1% U3O8 at PLS" (see Fission Energy Corp.'s news release dated December 5, 2012).. Untested conductors on the Rook I property lie directly on strike and 3km to the northeast of the mineralized intercepts reported by Fission Energy Corp. 
  
  
• Northwest Athabasca: Encouraging preliminary results were recently announced for the NW-Athabasca project, in which Mega and its joint venture partner Forum Uranium Corp. are jointly earning a 60% interest (which interest is anticipated to vest upon completion of the current program). Drillhole NWA-35 - 2.48% U3O8 over 1.5 metres at a vertical depth of 26 metres with a 0.5 metre interval grading 5.77% U3O8 confirming the presence of high grade mineralization on the property (see Mega's news release dated November 26, 2012).
  
  

To view "Figure 1. NexGen Property Location Map, Athabasca Basin, Saskatchewan, Canada", please visit the following link: http://media3.marketwire.com/docs/NexGenFigure1.pdf.

To view "Figure 2. NexGen Radio Uranium Property Location Map, Athabasca Basin, Saskatchewan, Canada", please visit the following link: http://media3.marketwire.com/docs/Figure2NexGen.pdf.

ABOUT NEXGEN ENERGY

NexGen Energy Ltd. was established by Tigers Realm Group, an Australian based privately owned resources group, as a special purpose Canadian company to option the Radio Project in the Athabasca Basin, Saskatchewan, Canada. Senior Management includes Leigh Curyer, CEO, and Andrew Browne, Vice President - Exploration and Development.  

Technical Information

There is no known mineralization at the Radio or Rook 1 Projects. Information regarding adjacent properties is not necessarily indicative of the mineralization at either Project. Michael Downes Ph.D., P.Geo., Vice President North America and Qualified Person for the purpose of NI43-101, has reviewed the technical content of this news.

Forward Looking Information

Completion of the transactions referred to above are subject to a number of conditions, including in the case of the reverse takeover of Clermont, acceptance of the TSX Venture Exchange and shareholder approval. There can be no assurance that the transaction described above will be completed as proposed or at all. This news release includes forward looking statements that are subject to assumptions, risks and uncertainties. Statements in this news release which are not purely historical are forward looking statements, including without limitation any statements concerning the completion of the Private Placement, the reverse-takeover of Clermont and the acquisition of certain uranium assets from Mega and the anticipated timing and results thereof. Although NexGen believes that any forward looking statements in this news release are reasonable, there can be no assurance that any such forward looking statements will prove to be accurate. NexGen cautions readers that all forward looking statements, are based on assumptions none of which can be assured, and are subject to certain risks and uncertainties that could cause actual events or results to differ materially from those indicated in the forward looking statements. Readers are advised to rely on their own evaluation of such risks and uncertainties and should not place undue reliance on forward looking statements.

The forward‐looking statements and information contained in this news release are made as of the date hereof and no undertaking is given to update publicly or revise any forward‐looking statements or information, whether as a result of new information, future events or otherwise, unless so required by applicable securities laws. The forward-looking statements or information contained in this news release are expressly qualified by this cautionary statement.