Arrow: A Rapidly Growing Uranium Discovery | February 24, 2015

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

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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

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information herein is correct as of any date after the date hereof.

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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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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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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

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,

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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Arrow Target Conductor break coincident with gravity low.

Discovered on first drill hole AR-14-1 (formerly RK-14-21)

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Arrow A series of vertically staked parallel shear zones

Characteristics 37 of 39 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 - 515 m x 215 m,

Depth - 100 m to 820 m,

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Two high grade shear zones A2 & A3:

- A2 (81 meter strike length) location of AR-14-30

- A3 (9.75m off scale >10,000 to >61,000cps) location of AR-15-39

Both high grade shears open in every direction

Expansion of A2 High Grade Shear Zone

AR-15-38 expands the

high grade zone of

AR-14-30 to 81 meters

to the southwest.

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Arrow AR-14-30 cross section

Very high grade continuous over large intercepts. Composite Grade Thickness of 909.

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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

A3 High Grade Shear Zone

February 24, 2015

AR-15-39 discovers

new high grade zone in

A3 shear zone.

9.75 m Off-scale

>10,000 to >61,000cps.

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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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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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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

Open in all directions along a 7km

conductor corridor

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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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

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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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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Arrow Summary

- 37 of 39 holes drilled intercepted mineralization,

- Area of mineralization 515 m x 215 m, vertical extent commencing from 100 m down to 820 m,

- Two High Grade Shear Zones A2 & A3,

- Expansion of A2 High Grade Zone to 81 m

- Well financed $14M,

- 18,000m drilling program at Arrow underway

- Large Radon Anomaly 400 m northeast of Arrow to be drill tested this winter along with other Rook I regional targets identified by geophysics.

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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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