- NexGen Energy discovered high-grade uranium mineralization at its Arrow discovery in February 2014 at its Rook I project located in the southwest Athabasca Basin. - Drilling at Arrow has intersected mineralization over a 515m by 215m area from 100m to 730m depth, with hole AR-14-30 returning one of the best intervals ever drilled in the Athabasca Basin. - A recent drill hole expanded the high-grade zone at AR-14-30 by 81m, and a large radon anomaly 400m northeast of Arrow represents another prospective target to be tested.

1. Arrow: A Rapidly Growing Uranium Discovery | February, 2015

2. Disclaimer
Information Contained In This Presentation
This presentation is a summary description of NexGen Energy Ltd. (“NexGen” or the
“Company”) and its business and does not purport to be complete. This presentation is
not, and in no circumstances is it to be construed as, a prospectus, an advertisement, or
a public offering of securities. No securities regulatory authority or similar authority has
reviewed or in any way passed upon the document or the merits of the Company’s
securities and any representation to the contrary is an offence.
Except where otherwise indicated, the information contained in this presentation has
been prepared by NexGen and there is no representation or warranty by NexGen or any
other person as to the accuracy or completeness of the information set forth herein. This
presentation includes information on adjacent properties that was obtained from various
publicly available sources referred to herein and the accuracy and completeness of such
information has not been verified by NexGen. Except as otherwise stated, information
included in this presentation is given as of the date hereof. Neither the delivery of this
presentation nor any sale made under the terms described herein shall imply that the
information herein is correct as of any date after the date hereof.
All dollar amounts referenced herein, unless otherwise indicated, are expressed in
Canadian dollars.
Cautionary Note Regarding Forward-looking Information
Statements contained in this presentation that are not current or historical factual
statements may constitute “forward-looking information” within the meaning of applicable
securities laws including statements with respect to the properties, a concurrent
financing, our plans for exploration and development of our properties and our financial
condition, operations and prospects. The forward-looking information reflects current
expectations regarding future results, performance or achievements and speaks only as
of the date of this presentation. When used in this presentation, forward-looking
information can be identified by such words as “may”, “will”, “expect”, “believe”, “plan”,
“project”, “anticipate”, “intend”, “estimate” and other similar terminology. Such forward-
looking information involves known and unknown risks, uncertainties and other factors
that may cause the actual results, performance or achievements of the Company to be
materially different from any future results, performance or achievements expressed in or
implied by such information. Such risks, uncertainties and other factors include, but are
not limited in any manner to those risks set forth in this presentation under the heading
“Risk Factors”, including, the risk that no mineralization will be identified on the Radio
and Rook I properties; the Company’s dependence on third party financing; the
Company’s limited operating history; risks inherent in exploration activities;
environmental and safety risks including increased regulatory burdens; unexpected
geological or hydrological conditions; a possible deterioration in political support for
nuclear energy; changes in government regulations and policies, including trade laws
and policies; demand for nuclear power; failure to obtain necessary permits and
approvals from government authorities; weather and other natural phenomena; and other
exploration, development, operating, financial market and regulatory risks. The
foregoing list of factors is not exhaustive.
The forward-looking information contained in this presentation requires management to
make certain assumptions including with respect to the financing and its ability to
successfully develop its properties. Although management of the Company believes that
the assumptions underlying, and the expectations reflected in, the forward-looking
information are reasonable, significant risks and uncertainties are involved in such
information. Management can give no assurances that its assumptions, estimates and
expectations will prove to have been correct. Forward-looking information should not be
read as guarantees of future performance or results, and will not necessarily be accurate
indications of whether or not or the times at or by which such performance or results will
be achieved. Many factors that are beyond the Company’s control could cause actual
results to differ materially from the results discussed in the forward-looking statements.
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3. Uranium Market
- 70 reactors currently under construction
- Another 150 to 200 in planning
- China nuclear capacity currently 18GW increasing to 58GW by 2020,
200GW by 2030:
China Climate Pledge with the US - Needs 1,000 Nuclear Plant Effort, Bloomberg, November 21, 2014.
The Chairman of CGN Uranium Resources: “The firm had already secured uranium projects in all other
major producing nations, including Namibia, Kazakhstan and Australia, and was now focusing its efforts
on Canada” (Reuters December 5, 2014).
- Japan approves restart of 2 reactors in 2015
- Application for another 20 of 48 in review
- Olympic Dam and Rossing production delays
estimated to result in ~8Mlb shortfall in 2015
Kyushu Electric's Sendai nuclear power plant could
restart in late 2014 or early 2015. Courtesy: Japan
Times
Two Westinghouse AP1000 reactors are currently under
construction at the Sanmen Nuclear Power Station in eastern
Zhejiang Province, China. Courtesy: Westinghouse
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4. Executive, Board & Technical Team
Executive
Leigh Curyer
Chief Executive Officer
Garrett Ainsworth
VP Exploration & Development
Grace Marosits
Chief Financial Officer
Travis McPherson
Corporate Development Manager
Strong team with a
successful track record in
uranium exploration.
Technical Team
Garrett Ainsworth
VP Exploration & Development
Adam Engdahl
Project Manager - Saskatchewan
James Sykes
Senior Geologist
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Board
Chris McFadden
Chairman
Richard Patricio
Trevor Thiele
Craig Parry
Gerry Feldman
James Currie
Directors
Technical Advisory
Andrew Browne
former VP Exploration & Development
Craig Parry
Director

5. Project Overview
Project Overview
Focus High-tonnage, high-grade, technically superior assets in shallow sections of the
Athabasca Basin
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Portfolio Characteristics
- Straddles the Basin boundary and shallow sections inside the Basin,
- NexGen’s land package enables them to find basement hosted, unconformity hosted and sandstone
hosted mineralization,
- Hosts the land based Arrow discovery at Rook I,

6. Arrow Discovery
Rook I Project location & Conductor Corridors
- Most dominant land
position in the
southwest section of
the Athabasca Basin
- Arrow discovered
February 2014
- Land based discovery
located inside the
Basin boundary
Rook I hosts all the known uranium bearing
conductor corridors in the region
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7. Arrow Target Conductor break coincident with gravity low.
Discovered on first drill hole AR-14-1 (formerly RK-14-21)
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8. Arrow Aseriesofverticallystaked parallelshear zones
Characteristics
36 of 38 holes drilled to
date intersected high
grade uranium
mineralization
90% of holes drilled are
angled across wide
step outs,
Area of mineralization,
Length x width
- 515m x 215m,
Depth
- 100m to 730m,
Open in all directions along a 7km
conductor corridor
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9. Expansion of AR30 High Grade Zone
AR-15-38 expands the
high grade zone of
AR-14-30 to 81 metres
to the southwest.
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10. Arrow AR-14-30 cross section
Very high grade
continuous over
large intercepts.
Composite Grade
Thickness of 909.
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11. AR-14-30 Core
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- On a
composite
grade x
thickness
basis, AR-14-30
ranks as the
third best hole
ever drilled in
the Athabasca
Basin

12. The Eagle Point Analogy
65 million lbs produced, 20 million lbs reserve, within >200 million lb district
- Eagle Point Uranium deposits are located on the eastern edge of the Athabasca Basin, and are part of the Rabbit Lake Uranium district,
which also includes the Rabbit Lake and Collins Bay deposits.
- Rabbit Lake is the longest operating uranium mine in North America and is also the second largest uranium mill in the world.
- The Rabbit Lake Uranium District has produced more than 190 million pounds of uranium concentrates since production began in 1975
(www.cameco.com/business/uranium-operations/canada/rabbit-lake).
- Production at Eagle Point commenced in 1994 and remains in production today.
The Arrow zone is located just inside the present day Athabasca Basin where no drill testing has
occurred within 4 km along strike to the northeast within the Athabasca Basin, and within 3 km along
strike to the southwest outside of the Athabasca Basin.
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13. Dravite Breccia –Arrow, McArthur River
Arrow: AR-14-15 422.25m Dravite associated (or proximal) to mineralization
Dravite-Chlorite-filled Breccias,
Direct Association with Mineralization – McArthur River Deposits and BJ Zone
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14. Rook I – Patterson Conductor Corridor
Arrow: multiple target zones (7kms)
Patterson Lake
South
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Significant Radon Anomaly
discovered coincident with
conductor break

15. Significant Radon Anomaly Discovered
480 m long by 20 to 150 m wide
radon in lake water anomaly has
been discovered 400 m northeast
along strike from the Arrow zone;
Radon values up to 10.4 pCi/L
are in the same range as the
radon values that led to the
discovery of the R390E R780E
zones at the adjacent PLS
property by the Alpha-Fission
joint venture (see news release
February 19th, 2013);
Location of this clustered
radon anomaly is optimally
situated where the southeast
dipping VTEM conductor is
projected to reach the
unconformity.
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16. 15
Gravity – Fury Target Area
- Six high priority
targets based on
the same
geophysical
signature as Arrow
- Land based
- Depth to basement
ranges from 10 to
20 meters
- Drilling
commenced late
January 2015

17. Eastern Athabasca Basin Portfolio
High quality portfolio
Radio located directly adjacent to
and long strike of Roughrider, Rio
Tinto acquired for $654M in
February 2012
Thorburn Lake (9 of 15 drill holes
have intersected uranium
mineralization)
Madison and 2Z Lake projects
contain shallow (<100m thick)
sandstone-hosted uranium
mineralisation, and is along strike
from U-mineralized conductors. The
mineralized structures and
conductors within 2Z have not been
adequately explored, and represent
good potential for discovery of new
basement-hosted uranium
deposits.
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18. Share Structure
As of January 31, 2015
Shares Issued & Outstanding 195,758,536
Warrants ($0.425 - $0.65) 31,054,518
Options ($0.30 - $0.46) 18,252,303
Fully Diluted 245,065,357
Cash ~$14M
Ownership
Tigers Realm Minerals & Associates
Mega Uranium
Radio Optionors (2 - individually)
~17%
~16%
~7%
TSX-V:
NXE
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19. Arrow Summary
- 36 of 38 holes drilled intercepted mineralization,
- Area of mineralization 515 m x 215m, vertical extent
commencing from 100m down to 730m,
- AR-14-30 one of the best holes in Athabasca Basin history,
grade thickness of 909 including a continuous 46m @ 10.32%
U3O8,
- Expansion of AR-14-30 High Grade Zone by 81 metres
- Well financed $14M,
- 18,000m drilling program at Arrow underway
- Massive Radon Anomaly 400m north east of Arrow to be drill
tested this winter along with other Rook I regional targets
identified by geophysics.
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20. Contact
Investor Relations
604-684-6730 | 1-866-684-6730
NXE@kincommunications.com
Head Office
2450 – 650 W. Georgia Street
Vancouver, BC V6B 4N9
604-428-4112
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