<SEC-DOCUMENT>0001279569-21-000854.txt : 20210624
<SEC-HEADER>0001279569-21-000854.hdr.sgml : 20210624
<ACCEPTANCE-DATETIME>20210624120246
ACCESSION NUMBER:		0001279569-21-000854
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210624
FILED AS OF DATE:		20210624
DATE AS OF CHANGE:		20210624

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NexGen Energy Ltd.
		CENTRAL INDEX KEY:			0001698535
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS METAL ORES [1090]
		IRS NUMBER:				840123707
		STATE OF INCORPORATION:			A1
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38072
		FILM NUMBER:		211041642

	BUSINESS ADDRESS:	
		STREET 1:		1021 WEST HASTINGS STREET
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6E 0C3
		BUSINESS PHONE:		(604) 428-4112

	MAIL ADDRESS:	
		STREET 1:		1021 WEST HASTINGS STREET
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6E 0C3
</SEC-HEADER>
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<TYPE>6-K
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<FILENAME>nexgen6k.htm
<DESCRIPTION>FORM 6-K
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        <P STYLE="font: 14pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>
        <P STYLE="font: 14pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>UNITED STATES</B></P>
        <P STYLE="font: 14pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>Washington, D.C. 20549</B></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>___________________</B></P>
        <P STYLE="font: 18pt Arial, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: center"><B>Form 6-K</B></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 6pt; text-align: center"><B>&nbsp;</B></P>
        <P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>REPORT OF FOREIGN PRIVATE ISSUER PURSUANT
        TO RULE 13a-16 OR 15d-16 OF THE SECURITIES EXCHANGE ACT OF 1934</B></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>
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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">For the month of June 2021</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">Commission File Number 001-38072</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>



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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>___________________</B></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 18pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>NexGen Energy Ltd.</B></P>
        <P STYLE="font: 18pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 10pt"><I>(Translation
        of registrant's name into English)&nbsp;</I></FONT></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center">Suite 3150, 1021 &ndash; West Hastings Street<BR>
        Vancouver, B.C., Canada V6E 0C3</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif">(<I>Address
        of principal executive offices</I>)</FONT></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>___________________</B></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center">&nbsp;</P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">I<FONT STYLE="font-family: Arial, Helvetica, Sans-Serif">ndicate
        by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif">Form
        20-F&nbsp;&nbsp;&nbsp;&#9744; &#9;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Form 40-F&nbsp;&nbsp;&nbsp;<FONT STYLE="font-family: Wingdings">&thorn;</FONT> </FONT></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif">Indicate
        by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1) &#9744;</FONT></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif">Indicate
        by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7) &#9744;</FONT></P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-indent: 1in">.<B>&nbsp;</B></P></TD></TR>
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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt"><B>INCORPORATION
BY REFERENCE</B></FONT></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"></P>

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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">Exhibits
99.1 to this Report on Form 6-K are hereby incorporated by reference as Exhibits to the Registration Statement on Form F-10
of NexGen Energy Ltd. (File No. 333-253512).</FONT></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>EXHIBIT INDEX</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>

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    <TD STYLE="text-decoration: underline; width: 17%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font: 8pt Arial, Helvetica, Sans-Serif"><B><U>Exhibit</U></B></FONT></TD>
    <TD STYLE="text-decoration: underline; width: 83%; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font: 8pt Arial, Helvetica, Sans-Serif"><B><U>Description</U></B></FONT></TD></TR>
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    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
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    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font: 10pt Arial, Helvetica, Sans-Serif"><A HREF="ex991.htm">99.1</A></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font: 10pt Arial, Helvetica, Sans-Serif"><A HREF="ex991.htm">News
    release dated June 24, 2021</A></FONT></TD></TR>
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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, on June 24,
2021.</P>



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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>



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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P>

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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

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    <TD>&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font: 10pt Arial, Helvetica, Sans-Serif"><B>NEXGEN ENERGY LTD.</B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; width: 5%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; width: 39%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; width: 6%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
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    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">By:</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; border-bottom: Black 1pt solid"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">/s/
    <I>Harpreet Dhaliwal</I></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;</FONT></TD></TR>
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    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">Name:</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">Harpreet Dhaliwal</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">Title:&nbsp;&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">Chief Financial Officer</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
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<TYPE>EX-99.1
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<FILENAME>ex991.htm
<DESCRIPTION>NEWS RELEASE DATED JUNE 24, 2021
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<P STYLE="text-align: right; margin: 0"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>Exhibit 99.1</B></FONT></P>

<P STYLE="margin: 0; text-align: right">&nbsp;</P>

<P STYLE="margin: 0; text-align: right"></P>

<P STYLE="font: bold 24pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">NexGen to List on the Australian Securities Exchange</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">VANCOUVER, BC, June 24, 2021 /CNW/ - <B>NexGen Energy
Ltd.</B>&nbsp;(&quot;<B>NexGen</B>&quot; or the &quot;<B>Company</B>&quot;) (TSX: NXE) (NYSE: NXE)&nbsp;is pleased to announce that it
has filed a prospectus with the Australian Securities and Investments Commission (&quot;ASIC&quot;) in connection with NexGen's application
for admission to the Australian Securities Exchange (&quot;ASX&quot;) as a Foreign Exempt Listing and quotation of its shares as Chess
Depositary Instruments (&quot;CDIs&quot;) on July 2, 2021 under the code &quot;<B>NXG</B>&quot;.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">Leigh Curyer, Chief Executive Officer, commented:
&quot;NexGen has grown a substantial investor following in Australia and the Asia Pacific region since its founding in 2011. At present,
approximately 30% of the NexGen's outstanding share capital is held by investors in the region. Given the stage of the Company's development,
the exceptional economic strength of the Rook I Project, and the accelerating demand for the responsible production of clean energy worldwide,
it is time to broaden the exposure of NexGen through a dual listing onto the ASX.&nbsp; The ASX is a significant resource bourse and has
substantial capital pools which are limited or restricted to only ASX-listed issuers.&nbsp; The ASX dual listing is complimentary to NexGen's
current TSX and NYSE listings and the Company's highly strategic positioning within the resource space will translate well onto the ASX
providing additional investor interest and liquidity.&nbsp; NexGen is well financed with over $200 million in cash in the treasury enabling
the Company to fund its planned activities through this exciting stage of final permitting and towards construction.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">Further, NexGen is in the final stages of preparing
for a 2021 exploration program at Rook I. This program will focus on known highly prospective targets incorporating extensive geological
data sets and surveys accumulated over the last 10 years. The Patterson Corridor alone on the Rook I Property that hosts the Arrow Deposit,
has over 90% yet to be explored. In addition, the Rook I property hosts an additional 8 known corridors running parallel to the east of
the Patterson which are all yet to be drilled. The proposed exploration program is scheduled to commence in the coming months incorporating
and subject to the exploration, health and safety protocols administered by the Provincial Government and Health Authority.&quot;</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">Max Cunningham &ndash; Executive General Manager,
Listings, Issuer Services &amp; Investment Products, Australian Securities Exchange commented: &quot;We look forward to welcoming NexGen
to ASX, where it will join some of the world's largest resource companies and benefit from direct access to Australia's deep capital pool.
The listing comes at a time of heightened interest and activity in the sector and will be our largest listing (by market capitalisation)
in the resources space since 2018.&quot;</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">NexGen is issuing 400,000 shares to be broadly distributed
to Australian investors as part of the ASX listing in order to provide for orderly trading.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">ASX uses an uncertificated electronic system called
CHESS for the clearance and settlement of trades on ASX. NexGen is incorporated in British Columbia and the requirements of British Columbian
laws that registered shareholders have the right to receive a stock certificate do not permit the CHESS system of holding uncertificated
securities. Accordingly, to enable NexGen to have its securities cleared and settled electronically through CHESS, depositary instruments
called CDIs are issued. CDIs represent the beneficial interest in the underlying common share in NexGen and are traded in a manner similar
to shares in an Australian company listed on ASX. Each CDI will be equivalent to one Share.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">The ASX Listing remains subject to ASX approval and
NexGen satisfying ASX's admission requirements.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">A copy of the prospectus in respect of the Listing
is available on NexGen's website at http://www.nexgenenergy.ca.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0"><B>About NexGen</B></P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">NexGen is a British Columbia corporation with a focus
on developing the Rook I Project located in the southwestern Athabasca Basin, Saskatchewan, Canada into production. Rook I hosts the Arrow
Deposit that hosts Measured Mineral Resources of 209.6 M lbs of U3O8&nbsp;contained in 2.18 M tonnes grading 4.35% U3O8, Indicated Mineral
Resources of 47.1 M lbs of U3O8&nbsp;contained in 1.57 M tonnes grading 1.36% U3O8, and Inferred Mineral Resources of 80.7 M lbs of U3O8&nbsp;contained
in 4.40 M tonnes grading 0.83% U3O8.&nbsp; Arrow's development is supported by a NI 43-101 compliant Feasibility Study which outlines
industry leading 'next generation' designs implementing elite environmental performance as well as industry leading strong economics.&nbsp;</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">NexGen has a highly experienced team of uranium industry
professionals with a successful track record in the discovery of uranium deposits and in developing projects through discovery to production.&nbsp;
The Company is the recipient of the 2018 PDAC Bill Dennis Award for Canadian mineral discovery and the 2019 PDAC Enviornmental and Social
Responsibility Award.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0"><B>Technical Disclosure</B></P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">The technical information in this news release with
respect to the FS has been reviewed and approved by Mark Hatton, P.Eng. of Stantec, Paul O'Hara, P.Eng. of Wood, and Mark B. Mathisen,
C.P.G. of RPA, each of whom is an independent &quot;qualified person&quot; under National Instrument 43-101 &ndash; <I>Standards of Disclosure
for Mineral Projects</I> (&quot;<B>NI-43-101</B>&quot;).&nbsp;</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">All technical information in this news release has
been reviewed and approved by Anthony (Tony) George, P.Eng, NexGen's Chief Project Officer, who is a qualified person under National Instrument
43-101.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">A technical report in respect of the FS will be filed
on SEDAR (www.sedar.com) and EDGAR (www.sec.gov/edgar.shtml) shortly<B>.</B></P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0"><B><I>Cautionary Note to U.S. Investors</I></B></P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0"><I>This news release includes Mineral Reserves and
Mineral Resources classification terms that comply with reporting standards in Canada and the Mineral Reserves, and the Mineral Resources
estimates are made in accordance with NI 43-101. NI 43-101 is a rule developed by the Canadian Securities Administrators that establishes
standards for all public disclosure an issuer makes of scientific and technical information concerning mineral projects. These standards
differ from the requirements of the Securities and Exchange Commission (&quot;<B>SEC</B>&quot;) set the SEC's rules that are applicable
to domestic United States reporting companies.&nbsp; &nbsp;Consequently, Mineral Reserves and Mineral Resources information included in
this news release is not comparable to similar information that would generally be disclosed by domestic U.S. reporting companies subject
to the reporting and disclosure requirements of the SEC&nbsp; Accordingly, information concerning mineral deposits set forth herein may
not be comparable with information made public by companies that report in accordance with U.S. standards.</I></P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0"><B>Forward-Looking Information</B></P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0"><I>The information contained herein contains &quot;forward-looking
statements&quot; within the meaning of applicable United States securities laws and regulations and &quot;forward-looking information&quot;
within the meaning of applicable Canadian securities legislation. &quot;Forward-looking information&quot; includes, but is not limited
to, statements with respect to mineral reserve and mineral resource estimates, the 2021 Arrow Deposit, Rook I Project and estimates of
uranium production, grade and long-term average uranium prices, anticipated effects of completed drill results on the Rook I Project,
planned work programs, completion of further site investigations and engineering work to support basic engineering of the project and
expected outcomes. Generally, but not always, forward-looking information and statements can be identified by the use of words such as
&quot;plans&quot;, &quot;expects&quot;, &quot;is expected&quot;, &quot;budget&quot;, &quot;scheduled&quot;, &quot;estimates&quot;, &quot;forecasts&quot;,
&quot;intends&quot;, &quot;anticipates&quot;, or &quot;believes&quot; or the negative connotation thereof or variations of such words
and phrases or state that certain actions, events or results &quot;may&quot;, &quot;could&quot;, &quot;would&quot;, &quot;might&quot;
or &quot;will be taken&quot;, &quot;occur&quot; or &quot;be achieved&quot; or the negative connotation thereof.</I>&nbsp; Statements relating
to &quot;mineral resources&quot; are deemed to be forward-looking information, as they involve the implied assessment that, based on certain
estimates and assumptions, the mineral resources described can be profitably produced in the future.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0"><I>Forward-looking information and statements are
based on the then current expectations, beliefs, assumptions, estimates and forecasts about NexGen's business and the industry and markets
in which it operates. Forward-looking information and statements are made based upon numerous assumptions, including among others, that
the mineral reserve and resources estimates and the key assumptions and parameters on which such estimates are based are as set out in
this news release and the technical report for the property , the results of planned exploration activities are as anticipated, the price
and market supply of uranium, the cost of planned exploration activities, that financing will be available if and when needed and on reasonable
terms, that third party contractors, equipment, supplies and governmental and other approvals required to conduct NexGen's planned exploration
activities will be available on reasonable terms and in a timely manner and that general business and economic conditions will not change
in a material adverse manner. Although the assumptions made by the Company in providing forward looking information or making forward
looking statements are considered reasonable by management at the time, there can be no assurance that such assumptions will prove to
be accurate in the future.</I></P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0"><I>Forward-looking information and statements also
involve known and unknown risks and uncertainties and other factors, which may cause actual results, performances and achievements of
NexGen to differ materially from any projections of results, performances and achievements of NexGen expressed or implied by such forward-looking
information or statements, including, among others, the existence of negative operating cash flow and dependence on third party financing,
uncertainty of the availability of additional financing, the risk that pending assay results will not confirm previously announced preliminary
results, conclusions of economic valuations, the risk that actual results of exploration activities will be different than anticipated,
the cost of labour, equipment or materials will increase more than expected, that the future price of uranium will decline or otherwise
not rise to an economic level, the appeal of alternate sources of energy to uranium-produced energy, that the Canadian dollar will strengthen
against the U.S. dollar, that mineral resources and reserves are not as estimated, that actual costs or actual results of reclamation
activities are greater than expected, that changes in project parameters and plans continue to be refined and may result in increased
costs, of unexpected variations in mineral resources and reserves, grade or recovery rates or other risks generally associated with mining,
unanticipated delays in obtaining governmental, regulatory or First Nations approvals, risks related to First Nations title and consultation,
reliance upon key management and other personnel, deficiencies in the Company's title to its properties, uninsurable risks, failure to
manage conflicts of interest, failure to obtain or maintain required permits and licences, risks related to changes in laws, regulations,
policy and public perception, as well as those factors or other risks as more fully described in NexGen's Annual Information Form dated
March 11, 2020 filed with the securities commissions of all of the provinces of Canada except Quebec and in NexGen's 40-F filed with the
United States Securities and Exchange Commission, which are available on SEDAR at www.sedar.com and Edgar at www.sec.gov.&nbsp;&nbsp;
&nbsp;</I></P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0"><I>Although the Company has attempted to identify
important factors that could cause actual results to differ materially from those contained in the forward-looking information or statements
or implied by forward-looking information or statements, there may be other factors that cause results not to be as anticipated, estimated
or intended.&nbsp;&nbsp; Readers are cautioned not to place undue reliance on forward-looking information or statements due to the inherent
uncertainty thereof.</I></P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0"><I>There can be no assurance that forward-looking
information and statements will prove to be accurate, as actual results and future events could differ materially from those anticipated,
estimated or intended. Accordingly, readers should not place undue reliance on forward-looking statements or information. The Company
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. </I></P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">View original content:http://www.prnewswire.com/news-releases/nexgen-to-list-on-the-australian-securities-exchange-301319153.html</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">SOURCE NexGen Energy Ltd.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">View original content: http://www.newswire.ca/en/releases/archive/June2021/24/c3583.html</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">%CIK: 0001698535</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin: 0"><B>For further information: </B>Contact Information, Leigh Curyer, Chief
Executive Officer, NexGen Energy Ltd., +1 604 428 4112, lcuryer@nexgenenergy.ca, www.nexgenenergy.ca; Travis McPherson, Senior Vice President
Corporate Development, NexGen Energy Ltd., +1 604 428 4112, tmcpherson@nexgenenergy.ca, http://www.nexgenenergy.ca</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">CO: NexGen Energy Ltd.</P>

<P STYLE="font: 15pt Arial, Helvetica, Sans-Serif; margin-right: 0; margin-left: 0">CNW 06:00e 24-JUN-21</P>

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