This document provides an overview of NexGen Energy Ltd. and its Arrow uranium discovery in Saskatchewan's Athabasca Basin. Some key points: - Arrow was discovered in 2014 and has a current mineralized area of 645m x 235m and a depth of 100m to 920m. Drilling has intersected high-grade uranium in three shear zones, A2, A3, and A4. - Arrow remains open in all directions and at depth. Recent drilling expanded the higher-grade A2 sub-zone to 203m in strike length. - A new discovery, Bow, was made 3.7km northeast of Arrow in summer 2015. - Nex

1. Arrow: A Rapidly Growing Uranium Discovery | December 2015

2. DisclaimerInformation Contained In This Presentation
This presentation is a summary description of NexGenEnergy 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 otherwisestated, information included in this
presentation is given as of the date hereof. Neither thedelivery 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 thedate hereof.
All dollar amounts referenced herein, unless otherwise indicated, are expressed in
Canadian dollars.
Cautionary Note Regarding Forward-looking Information
This presentation contains “forward-looking information” within the meaning of
applicable securities laws. Forward-looking informationincludes include, but are
not limited to, information with respect planned exploration activities including
the anticipated completion of a resource estimate, the future interpretation of
geological information, exploration program cost estimates, the future price of
uranium and requirements for additional capital. Generally, forward-looking
information can be identifiedby the use of forward-looking terminology such as
“may”, “will”, “expect”, “believe”, “plan”, “project”, “anticipate”, “intend”, “estimate”
and other similar terminology.
Forward-looking information is basedon the then current expectations, beliefs,
assumptions, estimates and forecasts about NexGen’s business and the
industry and markets in which it operates. Forward-lookinginformation is based
upon numerous assumptions including, among others, the results of planned
exploration activities are as anticipated, the price of uranium, theanticipated
cost of planned exploration activities, that general business and economic
conditions will not change in a material adverse manner, that financing will be
available if and when needed and on reasonable terms and that third party
contractors, equipment, supplies and governmental and other approvals
required to conduct NexGen’s planned explorationactivities will be available on
reasonable terms and in a timely manner.
Certain factors could cause actual results, performances or achievements of NexGen
to be materially different from future results, performances or achievements
expressed or implied by such forward-lookinginformation, including the the risk
that the Company has negative operating cash flow and is dependent on third
party financing; uncertainty of additional funding, no known mineral reserves or
mineral resources, pendingassay results may not be consistent with preliminary
results, alternative sources of energy, risk inherent in exploration activities;
reliance on key management, failure to obtain necessary permits and approvals
from government authorities environmental and safety risks includingincreased
regulatory burdens; a possible deterioration in political support for nuclear
energy; and other risks described in the Company’s annual information form.
Although NexGen has attempted to identify important factors that could cause
actual actions, events or results to differ materially from those described in
forward-looking information, there may be other factors that cause actions,
events or results not tobe as anticipated, estimated or intended.
There can be no assurance that suchinformation will prove to be accurate, as actual
results and future events could differ materially from those anticipated in such
information. Accordingly, readers shouldplace undue reliance on forward
looking information. The forward lookinginformation contained in this
presentation are made as of thedate of the presentation, and accordingly,
subject to change aftersuchdate. NexGen does not undertaketo updateany
forward-looking information, except in accordance with applicable securities
laws.
Technical Information
The scientific and technical information in this presentation has been prepared or
approved by Garrett Ainsworth, P.Geo., Vice President – Exploration&
Development, a “qualified person” within the meaning of National Instrument 43-
101 – Standards of Disclosure for Mineral Projects. Mr. Ainsworth reviewed the
data disclosed in this presentation, including the sampling, analytical and test
data underlying the information containedin this presentation. Mr. Ainsworth
verified that the results are accurate by reviewing the official assay certificates
provided to the Company. For a description of the Company’s quality assurance
program and quality control measures, type of samples, sample intervals,
relevant analytical values and testing procedures please refer tothe “Technical
Report on the Rook I Property, Saskatchewan Canada” having an effective date
of November 30, 2015, filed under the Company’s profile at www.sedar.com.
2

3. 3
The Athabasca Basin
The Source of Future Supply
1.) World Nuclear Association (2015)
2.) Cameco Corp.
3.) Based on US$45/lb U & US$1,300/oz Au
Remember: 1.00% U3O8 = 23.50 g/t gold!
• Global average
resource grades
~0.10% U3O8
• Athabasca Basin
mines produce at
over 100X global
average resource
grade
• McArthur River
produced 19Mlbs
at average grade
of 14.87% U3O8
in 2014
1
2
3

4. 4
Athabasca Basin Setting

5. 5
Project Overview
Focus: High-tonnage, high-grade, technically superior assets in shallow sections of the
Athabasca Basin
Portfolio Characteristics
•Straddles the edge and inside of the Athabasca Basin
•Enables NexGen to find basement-hosted, unconformity-hosted and sandstone-
hosted mineralization
•Hosts the land-basedArrow discovery

6. 6
Arrow Discovery
Rook I Project Location & Conductor Corridors
• Most dominant land
position in the
Southwest Athabasca
Basin
• Arrow discovered Feb
2014 with 1st drill hole
and drilling at +95% hit
rate
• Land-based discovery
straddling and inside the
Athabasca Basin
boundary
• Basement-hosted high-
grade mineralization
that grows all directions
and at depth
Rook I hosts all the known uranium bearing conductor corridors
in the region

7. 7
Successful Drilling at Arrow
+90% of Drill Holes Intersected High-grade Uranium Mineralization
NexGen’s Drilling
Methodology:
1.Wide step-outs
2.Angled Holes: 90% of
holes drilled are angled
3.Efficient capital
allocation: 8:1 $ in the
ground to $ to G&A
4.Incredible hit rate:
+95% of holes hit
mineralization
Results:
Current Area of
Mineralization:
•Length x width
645 m x 235 m
•Depth
100 m to 920 m

8. 8
Arrow: A2, A3 & A4 Shears
Plan View of Arrow Zone

9. 9
A2: Continues to Expand
Dots Represent Middle Point of Intercept with 50m Diameter ‘Halo’ Surrounding
▷ A2 shear was discovered
in February 2014 with 1st
drill hole into target.
▷ Current dimensions of A2
high-grade core zone:
• Strike: 300m
• Vertical: 340m
• True Width: 11-
48.3m
▷ Strong continuity of high-
grade mineralization
throughout A2.
▷ Hosts the higher grade A2
sub-zone.

10. 10
A2 Higher Grade Sub-Zone
Characterized by Substantial Massive and Semi-Massive Pitchblende
▷ Higher grade A2 sub-zone
currently spans 203m in
strike.
▷ Sub-zone characterized by
dense accumulations of
massive to semi-massive
pitchblende mineralization
continuously across 203m
strike length.
▷ All holes with assays
returned from sub-zone
have continuous grade x
thicknesses (“GT”) of >200
to 655

11. 11
A3: High-Grade Shear Developing
Dots Represent Middle Point of Intercept with 50m Diameter ‘Halo’ Surrounding
▷ A3 shear zone discovered in
winter 2015 drilling.
▷ Remains open in all
directions and at depth.
▷ Broad high-grade
mineralization encountered
throughout A3.
▷ Recent intercepts continue
to prove up high-grade
nature including:
• AR-15-57c2: 29.5m @
5.89% U3O8
• AR-15-57c3: 50.5m @
2.74% U3O8

12. 12
Another Look at Arrow
Image made via Leapfrog software using latest drill
data from Arrow zone and a 0.05% U3O8 cut-off.
No NI 43-101 has been published for the Arrow
zone to date.
Northeast NorthwestSoutheast Southwest

13. 13
Arrow: Perspective on Size
The Empire State Building next to Arrow
Empire State Building
Total height: 443m
(~54% of Arrow’s height)
Arrow
Total height: 820m
(starting from 100m of
surface)
Image made via Leapfrog software using latest drill
data from Arrow zone and a 0.05% U3O8 cut-off.
No NI 43-101 mineral resource estimate has been
published for the Arrow zone to date.

14. 14
The Eagle Point Analogy
Eagle Point is an Underground Mine 100% Owned/Operated by Cameco
- Eagle Point current mineral reserves: 15.2Mlbsat 0.61%U3O8. 2014 annual production of 4.2Mlbs
- Underground mine using longhole stoping in the competent basement rock
- Eagle Point deposits arelocated on the eastern edge of the Athabasca Basin,and arepart of the Rabbit Lake Uraniumdistrict which also
includes the Rabbit Lakeand CollinsBaydeposits.
- Rabbit Lake District produced +198Mlbsof uranium concentratessince production began in 1975
1.) NexGen has not verified the information regarding Eagle Point and information regarding Eagle Point is not necessarily indicative of mineralization at Rook I.
1
1

15. 15
Bow: New Discovery 3.7km NE of Arrow
BO-15-10:
•9.5m @ 0.20%
U3O8 including 1m
@ 1.44% U3O8
•66m step-out to
east of drill hole
BO-15-02
•350m strike length
which will be
extensively
followed-up in
winter 2016 drill
campaign

16. 16
High Priority Regional Targets
• Multiple
high priority
targets
based on
the same
geophysical
signature as
Arrow
• Drilled first
holes into
Derkson
Corridor as
NexGen
summer
2015 and
will follow-
up in winter
2016

17. 17
Eastern Athabasca Basin Portfolio
High Quality Portfolio:
1.Radio: located directly adjacent
to and long strike of Roughrider,
Rio Tinto acquired for $654M in
February 2012.
2.Thorburn Lake: 9 of 15 drill
holes have intersected uranium
mineralization.
3.Madison and 2Z Lake:
contain shallow (<100m thick)
sandstone-hosted uranium
mineralization, and is along strike
from U-mineralized conductors.
Represent good potential for
discovery of new basement-hosted
uranium deposits.

18. 18
NexGen Summary
• Arrow, a rapidly growing high-grade uranium discovery
• +95% of holes hitting mineralization
• Aggressive and deliberate drilling methodology
• Area of mineralization 645 m x 235 m, vertical extent
commencing from 100 m down to 920 m
• 3 high-grade shear zones; A2, A3 & A4 identified with broad
intercepts of high-grade uranium encountered
• Arrow remains open in every direction and at depth.
• A brand new discovery made 3.7km northeast of Arrow called
“Bow”
• Well funded with ~C$16.3M cash on hand
• Completed 33,000m summer 2015 program with 14 assays
pending – fully funded 2016 winter program to start early
January

19. 19
APPENDICIES

20. 20
Uranium Market (Demand)
A Story of Stable Demand Growth and Uncertain Supply
Nuclear Electricity Growth
•Nuclear energy currently fuels 11% of global power needs
•930 GW needed by 2050 to support existing global decarbonisation mandates
•Equates to 2.3x increase in nuclear energy demand in just 35 years
Uranium Demand
•Average demand growth estimated at ~4% per year to 2024
Source: International Energy Agency (2015), World Nuclear
Association (2015)

21. 21
Uranium Market (Demand)
Investment and Reactor Builds
• Currently 437 nuclear reactors in operation globally
• 65 nuclear reactors currently under construction
• China: 26 currently, 23 under construction, 187 in planning/proposal phase
• China Nuclear Power Corp. “looking to invest in Canada in the near future” (Dec. 2014)
• Another 496 reactors are in the planning/proposal phase
1.) Graph: International Energy Agency (2015)
2.) World Nuclear Association (2015)
1
2

22. 22
Uranium Market (Supply)
Lack of Economic Uranium Deposits
• In 2014 world uranium
consumption was
155Mlbs while mine
supply accounted for
147Mlbs
• +20Mlbs from
HEU agreement
(now over)
• Estimated supply gap of
nearly 100Mlbs per year
by 2030
• 11 of top 15 uranium
mines are under severe
sovereign risk (Russia,
Kazakhstan, Niger)
End of HEU agreement in 2013 removed the equivalent of
McArthur River’s annual production from supply
1.) World Nuclear Association (2015)
2.) World Nuclear Association estimate of 97,450tU demand
and 53,000 tU supply in 2030
1
2

23. 23
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
Joanna Camercon
VP Legal & General Counsel
Board
Chris McFadden
Chairman
Richard Patricio
Trevor Thiele
Craig Parry
Gerry Feldman
James Currie
Directors
Technical Team
Garrett Ainsworth
VP Exploration & Development
Adam Engdahl
Project Manager - Saskatchewan
Galen McNamara
Project Manager - Geology
Technical Advisory
Andrew Browne
former VP Exploration & Development
Craig Parry
Director
Strongteamwith a
successfultrackrecordin
uraniumexplorationand
development.

24. 24
Capital Structure
Shares Issued & Outstanding 254,072,116
Warrants ($0.45 - $0.65) 19,918,592
Options ($0.30 - $0.62) 22,149,446
Fully Diluted 296,654,290
Cash ~C$20M
Ownership
Management/Directors
Tigers Realm Minerals & Shareholders
Mega Uranium
~6%
~14%
~9%
1.) As of October 30, 2015
2.) As of September 30, 2015
1
2

25. Best known continuously mineralizedangleddrill holes
from the Athabasca Basin
Company Project Hole ID From (m) To (m)
Length
(m)
U3O8
(wt%)
GT
Cameco McArthur -299 42.0 83.8 41.8 48.3 2019
NexGen Arrow AR-15-44b* 455.5 624.0 168.5 5.0 843
NexGen Arrow AR-15-44b** 499.5 568.0 68.5 9.56 655
Fission PLS PLS14-248 130.0 177.5 47.5 13.2 627
NexGen Arrow AR-15-49c2** 426.0 495.0 69.0 8.77 605
Denison Wheeler WR-525 402.0 412.0 12.0 43.8 526
Hathor Roughrider MWNE-10-648 238.0 301.0 63.0 7.8 491
Cameco Cigar Lake 231B 429.5 435.0 5.5 55 303
Formation
Capital
Virgin
River
VR-031w3 797.0 831.0 33.9 8.7 296
UEX
Shea
Creek
SHE-114-05 N/A N/A 10.2 20.7 211
Source: Company reports, Dundee Capital Markets
*0.01% U3O8 cut-off, maximum internal dilution of 4.5m downhole
**0.01% U3O8 cut-off, maximum internal dilution of 2.0m downhole
25
A2 Produces 2 Top Tier Angled Holes

26. A2 Shear: AR-15-44b (68.5m @ 9.56% U3O8)
SRC Geoanalytical Results
Grade (U3O8%) x
Thickness (m) (GT)From (m) To (m)
Interval
(m)
U3O8 (wt%)
429.00 434.50 5.50 0.03 0.18
441.00 442.00 1.00 0.04 0.04
450.50 452.00 1.50 0.08 0.12
455.50 461.00 5.50 2.03 11.15
463.50 483.00 19.50 1.03 20.07
486.00 497.00 11.00 5.42 59.64
499.50 568.00 68.50 9.56
654.78
499.50 556.00 56.50 11.55
499.50 519.50 20.00 20.68
503.00 504.00 1.00 70.00
570.50 571.50 1.00 0.10 0.10
576.00 578.00 2.00 0.03 0.06
582.00 586.00 4.00 1.64 6.56
590.00 624.00 34.00 2.65 90.14
630.50 631.00 0.50 0.02 0.01
639.00 645.00 6.00 0.05 0.27
652.00 667.00 15.00 0.06 0.85
670.00 675.00 5.00 0.08 0.40
680.00 687.00 7.00 0.02 0.16
694.00 718.00 24.00 0.04 0.96
743.50 744.00 0.50 2.15 1.08
776.50 777.50 1.00 0.03 0.03
810.50 813.00 2.50 0.14 0.36
827.50 828.50 1.00 0.15 0.15
832.50 833.50 1.00 0.09 0.09
871.50 874.50 3.00 0.03 0.09
878.50 879.50 1.00 0.06 0.06
892.00 893.00 1.00 0.04 0.04
908.00 908.50 0.50 0.03 0.01
919.50 921.00 1.50 1.23 1.85
935.50 941.00 5.50 0.77 4.22
946.50 949.50 3.00 0.03 0.08
· Cutoff grade 0.01% U3O8 (weight %)
· Minimum thickness 0.5 m downhole
· Maximum internal dilution 2.00 m downhole
· U3O8 analyzed by ICP-OES at SRClaboratories, Saskatoon
· All depths and intervals are meters downhole
26

27. A2 Shear: AR-15-49c2 (69.0m @ 8.77% U3O8)
SRC Geoanalytical Results
Grade (U3O8%) x
Thickness (m) (GT)From (m) To (m)
Interval
(m)
U3O8
(wt%)
403.50 404.50 1.00 0.03 0.03
426.00 495.00 69.00 8.77
604.90
426.00 485.50 59.50 10.13
435.50 485.50 50.00 12.01
456.00 474.00 18.00 20.55
465.00 469.50 4.50 40.64
466.50 467.00 0.50 76.00
499.00 512.00 13.00 0.04 0.57
534.00 534.50 0.50 0.11 0.06
569.00 573.50 4.50 0.15 0.68
631.50 634.00 2.50 0.10 0.24
639.00 649.00 10.00 0.05 0.52
652.00 653.50 1.50 0.07 0.10
658.50 663.50 5.00 0.09 0.44
666.00 677.00 11.00 0.11 1.16
688.00 689.50 1.50 0.04 0.05
714.00 733.00 19.00 0.06 1.19
739.50 744.00 4.50 0.02 0.11
747.50 753.00 5.50 0.12 0.67
756.00 764.00 8.00 0.04 0.33
775.00 776.50 1.50 0.02 0.03
780.50 781.00 0.50 0.33 0.17
792.50 793.00 0.50 0.02 0.01
797.50 798.00 0.50 0.07 0.03
805.50 806.00 0.50 0.26 0.13
812.50 813.50 1.00 0.78 0.78
818.00 819.00 1.00 0.04 0.04
827.50 829.50 2.00 0.42 0.84
832.00 834.00 2.00 0.40 0.81
849.50 850.50 1.00 0.03 0.03
876.50 877.50 1.00 0.16 0.16
· Cutoff grade 0.01% U3O8 (weight %)
· Minimum thickness 0.5 m downhole
· Maximum internal dilution 2.00 m downhole
· U3O8 analyzed by ICP-OES at SRClaboratories, Saskatoon
· All depths and intervals are meters downhole
27

28. 28
Arrow: No Freezing
• Cigar Lake is world-class in size and grade, but faces significant challenges
due to fact ore body is sandstone-hosted which means highly specialized
freezing technology within the wet rock conditions must be used.
• Unlike McArthur River and Cigar Lake which have 600 and 480m of
sandstone on top of the ore bodies, respectively - Arrow only has 10-20m of
sandstone within 80m of surface.
• Arrow is basement-
hosted which
means NO freezing
would be required
as the
mineralization is
hosted within
competent rocks.
1.) Cameco Corp..
1
1

29. 29
Analyst Coverage
Tyron Breytenbach - Cormark Securities Inc. (416) 943 6747
Rob Chang – Cantor Fitzgerald Canada (416) 849 5008
David Sadowski – Raymond James Ltd. (604) 659 8255
David Talbot – Dundee Capital Markets (416) 350 3082
Phil Swifen – Numis Securities Ltd. +44 (0)20 7260 1430

30. 30
Contact
Travis McPherson
Corporate Development
T: +1 604.428.4112
tmcpherson@nexgenenergy.ca