<SEC-DOCUMENT>0001654954-21-003066.txt : 20210322
<SEC-HEADER>0001654954-21-003066.hdr.sgml : 20210322
<ACCEPTANCE-DATETIME>20210322163859
ACCESSION NUMBER:		0001654954-21-003066
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20210322
FILED AS OF DATE:		20210322
DATE AS OF CHANGE:		20210322

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DENISON MINES CORP.
		CENTRAL INDEX KEY:			0001063259
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS METAL ORES [1090]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			A6
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33414
		FILM NUMBER:		21761780

	BUSINESS ADDRESS:	
		STREET 1:		40 UNIVERSITY AVE., SUITE 1100
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5J 1T1
		BUSINESS PHONE:		(416) 979-1991

	MAIL ADDRESS:	
		STREET 1:		40 UNIVERSITY AVE., SUITE 1100
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5J 1T1

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERNATIONAL URANIUM CORP
		DATE OF NAME CHANGE:	19980603
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>form6k.htm
<DESCRIPTION>FORM 6-K DATED MARCH 22, 2021
<TEXT>
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<div style="text-align: center; text-indent: 0px; padding-top: 5.3px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 24px; font-weight: bold;">UNITED STATES</font></div>
<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 24px; font-weight: bold;">SECURITIES AND EXCHANGE COMMISSION</font></div>
<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px; font-weight: bold;">Washington, D.C. 20549</font></div>
<div style="text-align: center; text-indent: 0px; padding-bottom: 2.7px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: center; text-indent: 0px; padding-bottom: 2.7px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: center; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 24px; font-weight: bold;">FORM 6-K</font></div>
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<br>
<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px; font-weight: bold;">REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE
13a-16 OR 15d-16</font></div>
<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px; font-weight: bold;">UNDER THE SECURITIES EXCHANGE ACT OF 1934</font></div>
<div style="text-align: justify; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: center; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px; font-weight: bold;">Date: March 22, 2021</font></div>
<div style="text-align: center; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: center; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">Commission File Number:</font> <font style="font-family: Times New Roman; font-size: 13px; font-weight: bold;">001-33414</font></div>
<div style="text-align: center; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: center; text-indent: 0px; padding-bottom: 2.7px; margin-right: 0px; margin-left: 0px; line-height: 1;"><font style="font-family: Times New Roman; font-size: 13px;"><font style="font-family: Times New Roman; font-size: 32px; font-weight: bold;">Denison Mines Corp.</font>&#xA0;<br></font></div>
<div style="text-align: left; width: 100%; text-indent: 0px; margin-right: 0px; margin-left: 0px; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"><!--Rule Below Paragraph--></div>
<div style="text-align: center; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px; line-height: 1;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;<font style="font-style: italic">(Name of
registrant)</font></font></div>
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: center; text-indent: 0px; padding-bottom: 2.7px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: left; width: 100%; text-indent: 0px; margin-right: 0px; margin-left: 0px; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"><!--Rule Below Paragraph--></div>
<div style="text-align: justify; text-indent: 0px; margin-right: 0px; margin-left: 0px; line-height: 1; padding-top: 8px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px; line-height: 1; padding-top: 8px;"><font style="font-family: Times New Roman; font-size: 13px; font-weight: bold;">1100-40 University Avenue</font> <font style="font-family: Times New Roman; font-size: 13px;"><br>
</font></div>
<div style="text-align: center; text-indent: 0px; padding-top: 8px; margin-right: 0px; margin-left: 0px; line-height: 1;"><font style="font-family: Times New Roman; font-size: 13px; font-weight: bold;">Toronto Ontario</font></div>
<div style="text-align: center; text-indent: 0px; padding-top: 8px; margin-right: 0px; margin-left: 0px; line-height: 1;"><font style="font-family: Times New Roman; font-size: 13px; font-weight: bold;">&#xA0;M5J 1T1 Canada</font> <font style="font-family: Times New Roman; font-size: 13px;"><br>
</font></div>
<div style="text-align: center; text-indent: 0px; padding-bottom: 2.7px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;<font style="font-style: italic">(Address of
principal executive offices)</font></font></div>
<div style="text-align: left; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<div style="text-align: left; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;Indicate by check mark whether the registrant files
or will file annual reports under cover Form 20-F or Form
40-F.</font></div>
<div style="text-align: justify; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: center; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">Form
20-F&#xA0;&#xA0;&#x2610;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;Form&#xA0;&#xA0;&#xA0;&#xA0;40-F&#xA0;&#xA0;&#xA0;&#x2612;</font></div>
<div style="text-align: justify; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: left; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">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):&#xA0;&#xA0;&#x2610;</font></div>
<div style="text-align: left; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">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):&#xA0;&#xA0;&#x2610;</font></div>
<div style="text-align: justify; text-indent: 0px; margin-right: 0px; margin-left: 0px;"></div>
<div style="text-align: justify; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<font style="font-family: Times New Roman; font-size: 13px;"><br>
</font>
<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;"><font style="font-weight: bold">INCORPORATION BY
REFERENCE</font><br></font></div>
<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">Exhibits 99.1 and
99.2 to this Form 6-K of Denison Mines Corp. are hereby
incorporated by reference to its Registration Statement on Form
F-10 (File No. 333-238108), as amended or
supplemented.<br></font></div>
<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px; font-weight: bold;">SIGNATURES<br></font></div>
<div style="text-align: justify; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: left; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">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.</font></div>
<div style="text-align: left; text-indent: 0px; padding-top: 16px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
</td>
<td colspan="3" style="width: 48%; vertical-align: top;">
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-weight: bold">DENISON MINES
CORP.</font><br></div>
</td>
</tr><tr>
<td style="width: 47%; vertical-align: middle;">
<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
</td>
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<td style="width: 47%; vertical-align: top;">
<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<td style="width: 1%; vertical-align: bottom;">
<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<td style="width: 4%; vertical-align: top;">
<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
</td>
<td colspan="3" style="width: 48%; vertical-align: top; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 2px; border-bottom-style: solid;">
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px; font-style: italic;">/s/ Amanda Willett</font></div>
</td>
</tr><tr>
<td style="width: 47%; vertical-align: top;">
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">Date<font style="font-weight: bold;">:&#xA0;</font> March
22, 2021</font></div>
</td>
<td style="width: 1%; vertical-align: bottom;">
<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
</td>
<td style="width: 4%; vertical-align: top;">
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<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">Amanda
Willett</font></div>
</td>
</tr><tr>
<td style="width: 47%; vertical-align: top;">
<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<td style="width: 1%; vertical-align: bottom;">
<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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<td style="width: 0%; vertical-align: bottom;">
<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
</td>
<td colspan="3" style="width: 48%; vertical-align: top;">
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">Vice
President Legal and Corporate Secretary</font></div>
</td>
</tr></table>
</div>
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: justify; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
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</div>
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<div id="hdr">
<div style="text-align: left; width: 100%; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
</div>
</div>
<div style="text-align: justify; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;"><font style="font-weight: bold;">FORM 6-K
EXHIBIT INDEX</font></font></div>
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: left">
<table cellpadding="0" cellspacing="0" style="text-align: left; margin: 0px auto 0px 0px; width: 100%; font-family: Times New Roman; font-size: 13px;">
<tr>
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<div style="text-align: center; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">Exhibit&#xA0;Number</font></div>
</td>
<td style="width: 5%; vertical-align: bottom;">
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;&#xA0;</font></div>
</td>
<td style="width: 85%; vertical-align: bottom;">
<div style="text-align: left; text-indent: 0px; margin-right: 0px; margin-left: 0px;"><font style="font-family: Times New Roman; font-size: 13px;">Description</font></div>
</td>
</tr><tr>
<td style="width: 10%; vertical-align: middle;">
<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
</td>
<td colspan="2" style="width: 90%; vertical-align: middle;">
<div><font style="font-family: Times New Roman; font-size: 13px;">&#xA0;</font></div>
</td>
</tr><tr>
<td>
<div style="text-align: center">&#xA0;99.1<font>&#xA0;</font></div>
</td>
<td>
<div><font>&#xA0;</font></div>
</td>
<td>
<div style="text-align: left"><font><a href="dml-press_releasereuraniu.htm">Designated press release dated
March 15, 2021</a>&#xA0;<br></font></div>
</td>
</tr><tr>
<td>
<div style="text-align: center">9<font>9.2</font></div>
</td>
<td>
<div><font>&#xA0;</font></div>
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<div style="text-align: left"><font><a href="mcrmar2021.htm">Material Change
Report dated March 17, 2021</a><br></font></div>
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<div style="text-align: left"><font><a href="mcrmar2021.htm"><font>Press
release dated March 22, 2021</font></a></font></div>
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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>dml-press_releasereuraniu.htm
<DESCRIPTION>PRESS RELEASE DATED MARCH 15, 2021
<TEXT>
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<font style="font-family: Arial; font-size: 11px;"><font style="font-weight: bold">Exhibit 99.1</font><br></font></div>
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<div style="text-align: right"><font>&#xA0;</font><font style="font-family: Arial; font-size: 11px">Denison Mines Corp.</font>
<div style="text-align: right; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">1100 &#x2013; 40
University Ave</font></div>
<div style="text-align: right; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">Toronto, ON M5J
1T1</font></div>
<div style="text-align: right; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="color: #000000; font-family: Arial; font-size: 11px">www.denisonmines.com</font></div>
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<font style="font-weight: bold; font-style: italic; font-family: Arial; font-size: 12px">
NOT FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES OR FOR RELEASE,
PUBLICATION, DISTRIBUTION OR DISSEMINATION DIRECTLY OR INDIRECTLY,
IN WHOLE OR IN PART, IN OR INTO THE UNITED STATES</font></div>
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<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
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<font style="color: #000000; font-family: Arial; font-size: 13px">PRESS
RELEASE</font></div>
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<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
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<font style="font-family: Arial; font-weight: bold;"><font style="color: rgb(0, 0, 0); font-size: 16px; font-weight: bold;">DENISON
ANNOUNCES FUNDING OF PROJECT FINANCE INITIATIVE</font></font></div>

<div style="text-align: center; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold"><font style="font-family: Arial;"><font style="color: rgb(0, 0, 0); font-size: 16px;">INVOLVING STRATEGIC
ACQUISITION OF PHYSICAL URANIUM</font></font></font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
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<font style="font-family: Arial; font-size: 12px"><font style="font-weight: bold">Toronto, ON &#x2013; March 15, 2021</font>
Denison Mines Corp. (&#x201C;Denison&#x201D; or the
&#x201C;Company&#x201D;) (DML: TSX, DNN: NYSE American) is pleased to
announce that it has entered into an agreement with Cantor
Fitzgerald Canada Corporation ("CFCC"), as lead underwriter and
sole book-runner, on behalf of themselves and a syndicate of
underwriters (collectively with CFCC, the "Underwriters"), under
which the Underwriters have agreed to purchase, on a bought deal
basis, 68,200,000&#xA0;units of the Company (the "Units") at the
price of USD$1.10 per Unit (the "Issue Price") for aggregate gross
proceeds of approximately USD$75 million&#xA0;(the "Unit
Offering").</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Net proceeds of
the Unit Offering are anticipated to be used to fund the strategic
purchase of uranium concentrates (&#x201C;U<font style="font-size: 70%; vertical-align: bottom">3</font>O<font style="font-size: 70%; vertical-align: bottom">8</font>&#x201D; or
&#x201C;Uranium&#x201D;) to be held by Denison as a long-term
investment, intended to support the potential future financing of
the advancement and/or construction of the Company&#x2019;s flagship
90% owned Wheeler River Uranium Project (&#x201C;Wheeler
River&#x201D;). Uranium purchases are planned to be made in the
uranium spot market, with a target of accumulating approximately
2.5 million pounds U<font style="font-size: 70%; vertical-align: bottom">3</font>O<font style="font-size: 70%; vertical-align: bottom">8</font>.</font></div>
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<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">The purchased
Uranium is expected to strengthen the Company&#x2019;s balance sheet
and enhance its ability to access future project financing, with
the potential collateralization of the Uranium holdings. In
addition, the purchased Uranium could provide the Company with
increased flexibility to negotiate long-term Uranium supply
arrangements with future customers. If a future decision is made to
advance Wheeler River into construction, the Company would
eventually market its physical Uranium holdings to its future
customers along with the mine production from Wheeler
River.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px;">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-style: italic; color: #000000; font-family: Arial; font-size: 12px">
This press release constitutes a "designated news release" for the
purposes of the Company's prospectus supplement dated November 13,
2020 to its short form base shelf prospectus dated June 2,
2020.</font></div>
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<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">David Cates,
President and CEO of Denison, commented,<font style="font-weight: bold">&#xA0;</font><font style="font-weight: bold; font-style: italic">&#x201C;Public support for
carbon-free, base-load nuclear energy continues to grow as part of
the clean energy-transition movement. Denison is well positioned to
participate in this exciting narrative through the potential future
development of our flagship Wheeler River uranium project. With the
uranium market showing continued signs of incremental improvement
in supply and demand fundamentals, this strategic financing is
being undertaken at an ideal time for Denison &#x2013; supporting
the opportunistic acquisition of physical Uranium to hold as a
long-term strategic capital asset.</font></font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; font-style: italic; font-family: Arial; font-size: 12px">
The physical Uranium holdings that we expect to acquire will
represent a sizeable portion of Denison&#x2019;s share (2018
Pre-Feasibility Study) of the expected CAD$290 million of initial
capital costs for Wheeler River. As a result, we expect this
transaction to enhance the long-term financial stability of the
company, as we advance towards a definitive development decision.
From a project finance standpoint, the physical Uranium holdings
could potentially de-risk the process by representing a meaningful
source of collateral. Similarly, we expect that our future
customers will value, as part of potential future discussions
regarding off-take or long-term contracting arrangements, the fact
that our Company will already have a sizeable base of physical
Uranium before achieving first production from Wheeler
River.</font></div>
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<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
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<font style="font-weight: bold; font-style: italic; font-family: Arial; font-size: 12px">
Importantly, with this transaction, Denison&#x2019;s joins other
major publicly-traded uranium companies that have disclosed
sizeable physical uranium purchases in recent years, and we have
broken the conventional equity dilution model for mining
development companies &#x2013;</font></div>
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<font style="font-family: Arial; font-size: 12px;">&#xA0;</font></div>
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<font style="font-weight: bold; font-style: italic; font-family: Arial; font-size: 12px">
as our shareholders will benefit from the additional financial
stability of our Uranium holdings, while remaining fully leveraged
to any future appreciation of uranium prices during the balance of
the environmental assessment and feasibility study processes
currently planned for Wheeler River.&#x201D;</font></div>
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<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
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<font style="font-weight: bold; font-family: Arial; font-size: 12px">
Unit Offering</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Each Unit will
consist of one common share in the capital of the Company (a
&#x201C;Common Share&#x201D;) and one-half of one transferable common
share purchase warrant of the Company (each whole warrant, a
&#x201C;Warrant&#x201D;). Each Warrant is exercisable to acquire one
Common Share (a &#x201C;Warrant Share&#x201D;) at an exercise price
of USD$2.25 per Warrant Share for 24 months after issuance. The
Warrants will not be listed.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">In addition,
Denison has agreed to grant to the Underwriters an over-allotment
option (the "Over-Allotment Option") exercisable, in whole or in
part, at the sole discretion of the Underwriters (subject to
certain agreed upon limitations), to purchase up to approximately
an additional 10,230,000 Units at the Issue Price for a period of
up to 30 days after the closing of the Unit Offering, for potential
additional gross proceeds to Denison of up to&#xA0;approximately
USD$11.25 million.&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Denison will pay
to the Underwriters a cash commission equal to 5% of the gross
proceeds of the Unit Offering, including any proceeds received from
the exercise of the Over-Allotment Option.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">The Unit Offering
will be made by way of a prospectus supplement (the "Prospectus
Supplement") to the Company's existing Canadian short form base
shelf prospectus dated June 2, 2020 (the "Base Shelf Prospectus").
The Prospectus Supplement will be filed with the securities
commissions in each of the provinces and territories
of&#xA0;Canada, except Quebec and is available on the SEDAR website
maintained by the Canadian Securities Administrators at
www.sedar.com. Alternatively, the Prospectus Supplement and related
Base Shelf Prospectus may be obtained upon request by contacting
the Company or Cantor Fitzgerald Canada Corporation in&#xA0;Canada,
attention: Equity Capital Markets, 181 University Avenue, Suite
1500,&#xA0;Toronto, ON, M5H 3M7,
email:&#xA0;ecmcanada@cantor.com.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">The Unit Offering
is expected to close on or about March 22, 2021.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px"><a name="_Hlk66704617"><!--anchor--></a>The
Company&#x2019;s at-the market equity offering program qualified
under a supplement dated November 13, 2020 to the Base Shelf
Prospectus (the &#x201C;ATM Offering&#x201D;) will terminate in
connection with the Unit Offering and the Company will no longer
offer or sell any common shares through the facilities of the
Toronto Stock Exchange and/or NYSE American pursuant to such ATM
Offering.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; font-family: Arial; font-size: 12px">
This press release does not constitute an offer to sell or the
solicitation of an offer to buy securities, nor will there be any
sale of the securities in any jurisdiction in which such offer,
solicitation or sale would be unlawful prior to the registration or
qualification under the securities laws of any such jurisdiction.
The securities being offered have not been approved or disapproved
by any regulatory authority, nor has any such authority passed upon
by the accuracy or adequacy of the Prospectus Supplement or the
Base Shelf Prospectus.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; font-family: Arial; font-size: 12px">
This press release does not constitute an offer to sell or a
solicitation of an offer to buy any of the securities in the United
States. The securities have not been and will not be registered
under the United States Securities Act of 1933, as amended (the
"U.S. Securities Act"), or any state securities laws and may not be
offered or sold within the United States or to or for the account
or benefit of a U.S. person (as defined in Regulation S under the
U.S. Securities Act) unless registered under the U.S. Securities
Act and applicable state securities laws or an exemption from such
registration is available.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; color: #000000; font-family: Arial; font-size: 12px">
About Denison</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Denison is a
uranium exploration and development company with interests focused
in the Athabasca Basin region of northern Saskatchewan, Canada. The
Company's flagship project is the 90% owned Wheeler River Uranium
Project, which is the largest undeveloped uranium project in the
infrastructure rich eastern portion of the Athabasca Basin region
of northern Saskatchewan. Denison's interests in Saskatchewan also
include a 22.5% ownership interest in the McClean Lake joint
venture ("MLJV"), which includes several uranium deposits and the
McClean Lake uranium mill, which is contracted to process the ore
from the Cigar Lake mine under a toll milling agreement, plus a
25.17% interest in the Midwest and Midwest A deposits, and a 66.90%
interest in the Tthe Heldeth T&#xFA;&#xE9; (&#x201C;THT,&#x201D;
formerly J Zone) and Huskie deposits on the Waterbury Lake
property. Each of Midwest, Midwest A, THT and Huskie are located
within 20 kilometres of the McClean Lake mill.</font></div>
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</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Denison is
engaged in mine decommissioning and environmental services through
its Closed Mines group (formerly Denison Environmental Services),
which manages Denison's Elliot Lake reclamation projects and
provides post-closure mine care and maintenance services to a
variety of industry and government clients.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Denison is also
the manager of Uranium Participation Corp., a publicly traded
company which invests in uranium oxide and uranium
hexafluoride.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: left; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; font-family: Arial; font-size: 12px">
For more information, please contact</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: left; margin-left: 420px; margin-right: 0px; text-indent: -420px">
<font style="font-family: Arial; font-size: 12px">David
Cates&#xA0;&#xA0;&#xA0;&#xA0;&#xA0; &#xA0;&#xA0;&#xA0; (416)
979-1991 ext. 362</font></div>
<div style="text-align: left; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">President and
Chief Executive Officer</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: left; margin-left: 420px; margin-right: 0px; text-indent: -420px">
<font style="font-family: Arial; font-size: 12px">Sophia
Shane&#xA0;&#xA0;&#xA0;&#xA0;&#xA0; (604) 689-7842</font></div>
<div style="text-align: left; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Investor
Relations</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: left; margin-left: 420px; margin-right: 0px; text-indent: -420px">
<font style="font-family: Arial; font-size: 12px">Follow Denison on
Twitter @DenisonMinesCo</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; color: #000000; font-family: Arial; font-size: 12px">
Cautionary Statement Regarding Forward-Looking
Statements</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="color: #000000; font-family: Arial; font-size: 11px">Certain
information contained in this news release constitutes
&#x2018;forward-looking information&#x2019;, within the meaning of
the applicable United States and Canadian legislation concerning
the business, operations and financial performance and condition of
Denison. Generally, these forward-looking statements can be
identified by the use of forward-looking terminology such as
&#x2018;plans&#x2019;, &#x2018;expects&#x2019;, &#x2018;budget&#x2019;,
&#x2018;scheduled&#x2019;, &#x2018;estimates&#x2019;,
&#x2018;forecasts&#x2019;, &#x2018;intends&#x2019;,
&#x2018;anticipates&#x2019;, or &#x2018;believes&#x2019;, or the
negatives and/or variations of such words and phrases, or state
that certain actions, events or results &#x2018;may&#x2019;,
&#x2018;could&#x2019;, &#x2018;would&#x2019;, &#x2018;might&#x2019; or
&#x2018;will be taken&#x2019;, &#x2018;occur&#x2019;, &#x2018;be
achieved&#x2019; or &#x2018;has the potential to&#x2019;.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px;">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px"><font style="color: #000000">In particular, this news release contains
forward-looking information pertaining to:</font> the likelihood of
completion of the Unit Offering and estimated timing for
completion; the ability to obtain the necessary regulatory
authority and approvals to complete the Unit Offering; the use of
proceeds of the Unit Offering, including the acquisition of
approximate quantities of Uranium; the strategic objectives of
Denison, including the potential advancement of the Wheeler River
project through project evaluation and de-risking to construction
and production; the potential benefits to Denison of holding
physical uranium, including as financial de-risking, collateral
and/or appreciation in value; Denison&#x2019;s joint venture
interests, and the continuation of its contracts with third
parties.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px;">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">Forward looking
statements are based on the opinions and estimates of management as
of the date such statements are made, and they are subject to known
and unknown risks, uncertainties and other factors that may cause
the actual results, level of activity, performance or achievements
of Denison to be materially different from those expressed or
implied by such forward-looking statements. For example, if market
conditions remain volatile and/or COVID-19 mitigation measures
result in more social and economic disruptions, Denison may not be
able to complete the Unit Offering on the terms herein described or
at all or pursue its evaluation and environmental assessment
activities necessary to advance the Wheeler River project, which
could have significant impacts on Denison. Denison may not be able
to deploy the proceeds as intended, if Uranium is not available to
be purchased at all or at prices deemed appropriate. Further,
should the price of uranium materially decline, Denison&#x2019;s
strategy of acquiring and holding physical uranium could expose
Denison to significant losses and adversely impact the financial
position of the Company. In addition, the currently anticipated
evaluation and environmental assessment activities may not be
maintained after further testing or Denison may decide or otherwise
be required to alter or discontinue testing, evaluation and
development work, if it is unable to maintain or otherwise secure
the necessary approvals or resources (such as testing facilities,
capital funding, etc.) and the Company may not be able to, or may
choose not to, proceed to a FS, construction or production for
Wheeler River. Denison believes that the expectations reflected in
this forward-looking information are reasonable and no assurance
can be given that these expectations will prove to be accurate and
results may differ materially from those anticipated in this
forward-looking information. For a discussion in respect of risks
and other factors that could influence forward-looking events,
please refer to the factors discussed in the Management&#x2019;s
Discussion &amp; Analysis dated March 4, 2021 under the heading
&#x201C;Risk Factors&#x201D;. These factors are not, and should not
be construed as being exhaustive</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">Accordingly,
readers should not place undue reliance on forward-looking
statements. The forward-looking information contained in this news
release is expressly qualified by this cautionary statement. Any
forward-looking information and the assumptions made with respect
thereto speaks only as of the date of this news release. Denison
does not undertake any obligation to publicly update or revise any
forward-looking information after the date of this news release to
conform such information to actual results or to changes in
Denison's expectations except as otherwise required by applicable
legislation.</font></div>
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</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>mcrmar2021.htm
<DESCRIPTION>MATERIAL CHANGE REPORT DATED MARCH 17, 2021
<TEXT>
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<head>
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<title>denison_-mcrrefeb2021pros</title>
</head>
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</div>
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<font style="font-weight: bold; font-family: Arial; font-size: 13px">
</font></div>
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<font style="font-family: Arial; font-size: 13px;"><font style="font-weight: bold"><font style="font-size: 12px"><font style="font-size: 11px">Exhibit
99.2</font></font></font><br></font></div>
<div style="text-align: center; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: center; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; font-family: Arial; font-size: 13px">
FORM 51-102F3</font></div>
<div style="text-align: center; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; font-style: italic; font-family: Arial; font-size: 13px">
MATERIAL CHANGE REPORT</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="display: table">
<div style="display: table-row">
<div style="display: table-cell; width: 144px"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Item
1:&#xA0;&#xA0;<br></font></div>
<div style="text-align: justify; display: table-cell"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Name and
Address of Company</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 96px">
<font style="font-family: Arial; font-size: 13px">Denison Mines
Corp. (&#x201C;<font style="font-weight: bold">Denison</font>&#x201D;
or the &#x201C;<font style="font-weight: bold">Company</font>&#x201D;)</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 96px">
<font style="font-family: Arial; font-size: 13px">1100 &#x2013; 40
University Avenue</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 96px">
<font style="font-family: Arial; font-size: 13px">Toronto, ON M5J
1T1</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="display: table">
<div style="display: table-row">
<div style="display: table-cell; width: 144px"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Item
2:&#xA0;&#xA0;<br></font></div>
<div style="text-align: justify; display: table-cell"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Dates of
Material Change</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 96px">
<font style="font-family: Arial; font-size: 13px">March 15,
2021</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="display: table">
<div style="display: table-row">
<div style="display: table-cell; width: 144px"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Item
3:&#xA0;&#xA0;<br></font></div>
<div style="text-align: justify; display: table-cell"><font style="font-weight: bold; font-family: Arial; font-size: 13px">News
Release</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 1px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">A news release
announcing the material change was disseminated on March 15, 2021
through the facilities of CNW Group (Cision), a copy of which has
been filed under Denison&#x2019;s profile on SEDAR.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="display: table">
<div style="display: table-row">
<div style="display: table-cell; width: 144px"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Item
4:&#xA0;&#xA0;&#xA0;<br></font></div>
<div style="text-align: justify; display: table-cell"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Summary of
Material Change</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px"><font style="font-family: Arial; font-size: 13px">On March 15, 2021, Denison
entered into an agreement with Cantor Fitzgerald Canada Corporation
(&#x201C;<font style="font-weight: bold">CFCC</font>&#x201D;)<font style="font-family: Arial">,</font> as lead underwriter and sole
book-runner<font style="font-family: Arial">,</font> on behalf of
itself and a syndicate of underwriters (collectively with CFCC, the
"<font style="font-weight: bold">Underwriters</font>"), under which
the Underwriters agreed to purchase, on a bought deal basis,
68,200,000 units of the Company (the "<font style="font-weight: bold">Units</font>") at the price of USD$1.10 per
Unit (the "<font style="font-weight: bold">Issue Price</font>") for
aggregate gross proceeds of approximately USD$75 million (the
"<font style="font-weight: bold">Unit Offering</font>")<font style="font-family: Arial">.</font></font></font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="display: table">
<div style="display: table-row">
<div style="display: table-cell; width: 144px"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Item
5:&#xA0;&#xA0;&#xA0;<br></font></div>
<div style="text-align: justify; display: table-cell"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Full
Description of Material Change</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 96px; margin-right: 1px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 1px; text-indent: 0px">
<font style="font-weight: bold; font-family: Arial; font-size: 13px">5.1 Full
Description of Material Change</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 1px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">On March 15,
2021, Denison entered into an agreement with CFCC, as lead
underwriter and sole book-runner, on behalf of itself and a
syndicate of underwriters, under which the Underwriters have agreed
to purchase, on a bought deal basis, 68,200,000 Units at the Issue
Price for aggregate gross proceeds of approximately USD$75
million<font style="font-family: Arial">.</font></font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">Each Unit will
consist of one common share in the capital of the Company (a
&#x201C;<font style="font-weight: bold">Common Share</font>&#x201D;)
and one-half of one transferable common share purchase warrant of
the Company (each whole warrant, a &#x201C;<font style="font-weight: bold">Warrant</font>&#x201D;). Each Warrant is
exercisable to acquire one Common Share (a &#x201C;<font style="font-weight: bold">Warrant Share</font>&#x201D;) at an exercise
price of USD$2.25 per Warrant Share for 24 months after issuance.
The Warrants will not be listed.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">In addition,
Denison has agreed to grant to the Underwriters an over-allotment
option (the "<font style="font-weight: bold">Over-Allotment
Option</font>") exercisable, in whole or in part, at the sole
discretion of the Underwriters to purchase up to an additional
10,230,000 Units at the Issue Price for a period of up to 30 days
after the closing of the Unit Offering, for potential additional
gross proceeds to Denison of up to approximately USD$11.25
million.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">Denison will pay
to the Underwriters a cash commission equal to 5% of the gross
proceeds of the Unit Offering, including any proceeds received from
the exercise of the Over-Allotment Option.</font></div>
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<div id="ftr">
<div style="text-align: left; width: 100%"><font style="font-family: Times New Roman; font-size: 11px">&#xA0;</font></div>
</div>
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<div id="hdr">
<div style="text-align: right; width: 100%"><font style="font-family: Times New Roman; font-size: 11px">&#xA0;</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">Net proceeds of
the Unit Offering are anticipated to be used to fund the strategic
purchase of uranium concentrates (&#x201C;<font style="font-weight: bold">U</font><font style="font-weight: bold; font-size: 70%; vertical-align: bottom">3</font><font style="font-weight: bold">O</font><font style="font-weight: bold; font-size: 70%; vertical-align: bottom">8</font>&#x201D;
or &#x201C;<font style="font-weight: bold">Uranium</font>&#x201D;) to
be held by Denison as a long-term investment, intended to support
the potential future financing of the advancement and/or
construction of the Company&#x2019;s flagship 90% owned Wheeler
River Uranium Project (&#x201C;<font style="font-weight: bold">Wheeler River</font>&#x201D;). Uranium purchases
are planned to be made in the uranium spot market, with a target of
accumulating approximately 2.5 million pounds of U<font style="font-size: 70%; vertical-align: bottom">3</font>O<font style="font-size: 70%; vertical-align: bottom">8</font><font style="font-family: Arial">.</font></font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">The Unit Offering
will be made by way of a prospectus supplement (the "<font style="font-weight: bold">Prospectus Supplement</font>") to the Company's
existing Canadian short form base shelf prospectus dated June 2,
2020 (the "<font style="font-weight: bold">Base Shelf
Prospectus</font>"). The Prospectus Supplement will be filed with
the securities commissions in each of the provinces and territories
of Canada, except Quebec<font style="font-family: Arial">.</font></font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">The Unit Offering
is expected to close on or about March 22, 2021<font style="font-family: Arial">.</font></font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">The
Company&#x2019;s at-the-market equity offering program qualified
under a supplement dated November 13, 2020 to the Base Shelf
Prospectus (the &#x201C;<font style="font-weight: bold">ATM
Offering</font>&#x201D;) will be terminated in connection with the
Unit Offering and the Company will no longer offer or sell any
common shares through the facilities of the Toronto Stock Exchange
(the &#x201C;<font style="font-weight: bold">TSX</font>&#x201D;)
and/or the NYSE American pursuant to the ATM Offering.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">The Unit Offering
is subject to certain conditions including, but not limited to, the
receipt of all necessary approvals, including the approval of the
TSX and the NYSE American.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 1px; text-indent: 0px">
<font style="font-weight: bold; font-family: Arial; font-size: 13px">5.2
Disclosure of Restructuring Transactions</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 1px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px;">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 1px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">Not
applicable</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 1px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px;">&#xA0;</font></div>
<div style="display: table">
<div style="display: table-row">
<div style="display: table-cell; width: 144px"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Item
6:&#xA0;&#xA0;<br></font></div>
<div style="text-align: justify; display: table-cell"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Reliance
on subsection 7.1(2) or (3) of National Instrument
51-102</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 96px">
<font style="font-family: Arial; font-size: 13px">Not
applicable</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="display: table">
<div style="display: table-row">
<div style="display: table-cell; width: 96px"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Item
7:&#xA0;<br></font></div>
<div style="display: table-cell; width: 48px"><font style="font-weight: bold; font-family: Arial; font-size: 13px">&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;</font></div>
<div style="text-align: justify; display: table-cell"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Omitted
Information</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 96px">
<font style="font-family: Arial; font-size: 13px">Not
applicable</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="display: table">
<div style="display: table-row">
<div style="display: table-cell; width: 144px"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Item
8:&#xA0;&#xA0;&#xA0;<br></font></div>
<div style="text-align: justify; display: table-cell"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Executive
Officer</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 96px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 13px">For further
information, please contact David Cates, President &amp; Chief
Executive Officer, at (416) 979-1991 Ext. 362.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="display: table">
<div style="display: table-row">
<div style="display: table-cell; width: 144px"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Item
9:&#xA0;&#xA0;&#xA0;<br></font></div>
<div style="text-align: justify; display: table-cell"><font style="font-weight: bold; font-family: Arial; font-size: 13px">Date of
Report</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 96px">
<font style="font-family: Arial; font-size: 13px">March 17,
2021</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; font-family: Arial; font-size: 11px">
CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING
STATEMENTS</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">Certain
information contained in this report constitutes
&#x2018;forward-looking information&#x2019;, within the meaning of
the applicable United States and Canadian legislation concerning
the business, operations and financial performance and condition of
Denison. Generally, these forward-looking statements can be
identified by the use of forward-looking terminology such as
&#x2018;plans&#x2019;, &#x2018;expects&#x2019;, &#x2018;budget&#x2019;,
&#x2018;scheduled&#x2019;, &#x2018;estimates&#x2019;,
&#x2018;forecasts&#x2019;, &#x2018;intends&#x2019;,
&#x2018;anticipates&#x2019;, or &#x2018;believes&#x2019;, or the
negatives and/or variations of such words and phrases, or state
that certain actions, events or results &#x2018;may&#x2019;,
&#x2018;could&#x2019;, &#x2018;would&#x2019;, &#x2018;might&#x2019; or
&#x2018;will be taken&#x2019;, &#x2018;occur&#x2019;, &#x2018;be
achieved&#x2019; or &#x2018;has the potential to&#x2019;.</font></div>
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<div style="text-align: left; width: 100%"><font style="font-family: Times New Roman; font-size: 11px">&#xA0;</font></div>
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<div style="text-align: right; width: 100%"><font style="font-family: Times New Roman; font-size: 11px">&#xA0;</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">In particular,
this report contains forward-looking information pertaining to: the
likelihood of completion of the Unit Offering and estimated timing
for completion, the ability to obtain the necessary regulatory
authority and approvals to complete the Unit Offering, the use of
proceeds of the Unit Offering, including the acquisition of
approximate quantities of Uranium, the strategic objectives of
Denison, including the potential advancement of the Wheeler River
project through project evaluation and de-risking to construction
and production, the potential benefits to Denison of holding
physical uranium, including as financial de-risking, collateral
and/or appreciation in value, Denison&#x2019;s joint venture
interests, and the continuation of its contracts with third
parties.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">Forward looking
statements are based on the opinions and estimates of management as
of the date such statements are made, and they are subject to known
and unknown risks, uncertainties and other factors that may cause
the actual results, level of activity, performance or achievements
of Denison to be materially different from those expressed or
implied by such forward-looking statements. For example, if market
conditions remain volatile and/or COVID-19 mitigation measures
result in more social and economic disruptions, Denison may not be
able to complete the Unit Offering on the terms herein described or
at all or pursue its evaluation and environmental assessment
activities necessary to advance the Wheeler River project, which
could have significant impacts on Denison. Denison may not be able
to deploy the proceeds as intended, if Uranium is not available to
be purchased at all or at prices deemed appropriate. Further,
should the price of uranium materially decline, Denison&#x2019;s
strategy of acquiring and holding physical uranium could expose
Denison to significant losses and adversely impact the financial
position of the Company. In addition, the currently anticipated
evaluation and environmental assessment activities may not be
maintained after further testing or Denison may decide or otherwise
be required to alter or discontinue testing, evaluation and
development work, if it is unable to maintain or otherwise secure
the necessary approvals or resources (such as testing facilities,
capital funding, etc.) and the Company may not be able to, or may
choose not to, proceed to a feasibility study, construction or
production for Wheeler River. Denison believes that the
expectations reflected in this forward-looking information are
reasonable and no assurance can be given that these expectations
will prove to be accurate and results may differ materially from
those anticipated in this forward-looking information. For a
discussion in respect of risks and other factors that could
influence forward-looking events, please refer to the factors
discussed in the Management&#x2019;s Discussion and Analysis dated
March 4, 2021 under the heading &#x201C;Risk Factors&#x201D;. These
factors are not, and should not be construed as being
exhaustive<font style="font-family: Arial">.</font></font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">Accordingly,
readers should not place undue reliance on forward-looking
statements. The forward-looking information contained in this
report is expressly qualified by this cautionary statement. Any
forward-looking information and the assumptions made with respect
thereto speaks only as of the date of this report. Denison does not
undertake any obligation to publicly update or revise any
forward-looking information after the date of this report to
conform such information to actual results or to changes in
Denison's expectations except as otherwise required by applicable
legislation.</font></div>
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</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.3
<SEQUENCE>4
<FILENAME>dmc-prmarch222021announce.htm
<DESCRIPTION>PRESS RELEASE DATED MARCH 22, 2021
<TEXT>
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<title>dmc-prmarch222021announce</title>
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<font style="font-family: Arial; font-size: 11px;"><font style="font-weight: bold">Exhibit 99.3</font><br></font></div>
<div style="text-align: right; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px;">&#xA0;</font></div>
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<div style="text-align: right"><font>&#xA0;</font><font style="font-family: Arial; font-size: 11px">Denison Mines Corp.</font>
<div style="text-align: right; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">1100 &#x2013; 40
University Ave</font></div>
<div style="text-align: right; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">Toronto, ON M5J
1T1</font></div>
<div style="text-align: right; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="color: #000000; font-family: Arial; font-size: 11px">www.denisonmines.com</font></div>
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<br>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: center; margin-left: 0px; margin-right: 49px; text-indent: 0px">
<font style="font-weight: bold; font-style: italic; font-family: Arial; font-size: 12px">
NOT FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES OR FOR RELEASE,
PUBLICATION, DISTRIBUTION OR DISSEMINATION DIRECTLY OR INDIRECTLY,
IN WHOLE OR IN PART, IN OR INTO THE UNITED STATES</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: center; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="color: #000000; font-family: Arial; font-size: 13px">PRESS
RELEASE</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: center; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="color: rgb(0, 0, 0); font-family: Arial; font-size: 16px; font-weight: bold;">DENISON
ANNOUNCES CLOSING OF US$86.3 MILLION</font></div>
<div style="text-align: center; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold"><font style="color: rgb(0, 0, 0); font-family: Arial; font-size: 16px; font-weight: bold;">
FINANCING IN SUPPORT OF STRATEGIC ACQUISITION</font></font></div>
<div style="text-align: center; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold"><font style="font-family: Arial; font-size: 16px">OF PHYSICAL
URANIUM</font></font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px"><font style="font-weight: bold">Toronto, ON &#x2013; March 22, 2021</font>
Denison Mines Corp. (&#x201C;Denison&#x201D; or the
&#x201C;Company&#x201D;) (DML: TSX, DNN: NYSE American) is pleased to
announce that it has closed its previously announced bought deal
public offering of units (the &#x201C;Offering&#x201D;). The Company
issued 78,430,000 units of the Company at US$1.10 per unit for
aggregate gross proceeds of US$86,273,000, which included
10,230,000 units through the full exercise of the
underwriters&#x2019; over-allotment option.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Each unit
consists of one common share and one-half of one transferable
common share purchase warrant of the Company. Each full warrant is
exercisable to acquire one Company common share at an exercise
price of US$2.25 for 24 months after issuance. The warrants are not
listed.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">The Offering was
completed through a syndicate of underwriters co-led by Cantor
Fitzgerald Canada Corporation, as sole-bookrunner, and Haywood
Securities Inc., and including Scotia Capital Inc., Canaccord
Genuity Corp., TD Securities Inc., BMO Nesbitt Burns Inc., Cormark
Securities Inc., Raymond James Ltd. and Paradigm Capital
Inc.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Net proceeds of
the Offering are anticipated to be used to fund the strategic
purchase of uranium concentrates (&#x201C;U<font style="font-size: 70%; vertical-align: bottom">3</font>O<font style="font-size: 70%; vertical-align: bottom">8</font>&#x201D;) to be
held by Denison as a long-term investment, intended to support the
potential future financing of the advancement and/or construction
of the Company&#x2019;s flagship 90% owned Wheeler River Uranium
Project (&#x201C;Wheeler River&#x201D;). Uranium purchases are
planned to be made in the uranium spot market, with a target of
accumulating approximately 2.5 million pounds of U<font style="font-size: 70%; vertical-align: bottom">3</font>O<font style="font-size: 70%; vertical-align: bottom">8</font>.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">The Offering was
made by way of a prospectus supplement dated March 16, 2021 (the
"Prospectus Supplement") to the Company's existing Canadian short
form base shelf prospectus dated June 2, 2020 (the "Base Shelf
Prospectus"). The Prospectus Supplement has been filed with the
securities commissions in each of the provinces and territories
of&#xA0;Canada, except Quebec and is available on the SEDAR website
maintained by the Canadian Securities Administrators at
www.sedar.com.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; font-family: Arial; font-size: 12px">
This press release does not constitute an offer to sell or the
solicitation of an offer to buy securities, nor will there be any
sale of the securities in any jurisdiction in which such offer,
solicitation or sale would be unlawful prior to the registration or
qualification under the securities laws of any such jurisdiction.
The securities offered have not been approved or disapproved by any
regulatory authority, nor has any such authority passed upon by the
accuracy or adequacy of the Prospectus Supplement or the Base Shelf
Prospectus.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; font-family: Arial; font-size: 12px">
This press release does not constitute an offer to sell or a
solicitation of an offer to buy any of the securities in the United
States. The securities have not been and will not be registered
under the United States Securities Act of 1933, as amended (the
"U.S. Securities Act"), or any state securities laws and may not be
offered or sold within the United States or to or for the account
or benefit of a U.S. person (as defined in Regulation S under the
U.S. Securities Act) unless registered under the U.S. Securities
Act and applicable state securities laws or an exemption from such
registration is available.</font></div>
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<div style="text-align: left; width: 100%; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
</div>
</div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; color: #000000; font-family: Arial; font-size: 12px">
About Denison</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Denison is a
uranium exploration and development company with interests focused
in the Athabasca Basin region of northern Saskatchewan, Canada. The
Company's flagship project is the 90% owned Wheeler River Uranium
Project, which is the largest undeveloped uranium project in the
infrastructure rich eastern portion of the Athabasca Basin region
of northern Saskatchewan. Denison's interests in Saskatchewan also
include a 22.5% ownership interest in the McClean Lake joint
venture ("MLJV"), which includes several uranium deposits and the
McClean Lake uranium mill, contracted to process the ore from the
Cigar Lake mine under a toll milling agreement, plus a 25.17%
interest in the Midwest and Midwest A deposits, and a 66.90%
interest in the Tthe Heldeth T&#xFA;&#xE9; (&#x201C;THT,&#x201D;
formerly J Zone) and Huskie deposits on the Waterbury Lake
property. Each of Midwest, Midwest A, THT and Huskie are located
within 20 kilometres of the McClean Lake mill.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Denison is
engaged in mine decommissioning and environmental services through
its Closed Mines group (formerly Denison Environmental Services),
which manages Denison's Elliot Lake reclamation projects and
provides post-closure mine care and maintenance services to a
variety of industry and government clients.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">Denison is also
the manager of Uranium Participation Corporation, a publicly traded
company listed on the TSX under the symbol 'U', which invests in
uranium oxide in concentrates ('U<font style="font-size: 70%; vertical-align: bottom">3</font>O<font style="font-size: 70%; vertical-align: bottom">8</font>') and uranium
hexafluoride ('UF<font style="font-size: 70%; vertical-align: bottom">6</font>').</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: left; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-weight: bold; font-family: Arial; font-size: 12px">
For more information, please contact</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: left; margin-left: 420px; margin-right: 0px; text-indent: -420px">
<font style="font-family: Arial; font-size: 12px">David
Cates&#xA0;&#xA0;&#xA0;&#xA0;&#xA0; &#xA0;&#xA0;&#xA0; (416)
979-1991 ext. 362</font></div>
<div style="text-align: left; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 12px">President and
Chief Executive Officer</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
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<font style="font-family: Arial; font-size: 12px">Sophia
Shane&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0; (604)
689-7842</font></div>
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<font style="font-family: Arial; font-size: 12px">Follow Denison on
Twitter @DenisonMinesCo</font></div>
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<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
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<font style="font-weight: bold; color: #000000; font-family: Arial; font-size: 12px">
Cautionary Statement Regarding Forward-Looking
Statements</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="color: #000000; font-family: Arial; font-size: 11px">Certain
information contained in this news release constitutes
&#x2018;forward-looking information&#x2019;, within the meaning of
the applicable United States and Canadian legislation concerning
the business, operations and financial performance and condition of
Denison.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px;">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="color: #000000; font-family: Arial; font-size: 11px">Generally,
these forward-looking statements can be identified by the use of
forward-looking terminology such as &#x2018;plans&#x2019;,
&#x2018;expects&#x2019;, &#x2018;budget&#x2019;,
&#x2018;scheduled&#x2019;, &#x2018;estimates&#x2019;,
&#x2018;forecasts&#x2019;, &#x2018;intends&#x2019;,
&#x2018;anticipates&#x2019;, or &#x2018;believes&#x2019;, or the
negatives and/or variations of such words and phrases, or state
that certain actions, events or results &#x2018;may&#x2019;,
&#x2018;could&#x2019;, &#x2018;would&#x2019;, &#x2018;might&#x2019; or
&#x2018;will be taken&#x2019;, &#x2018;occur&#x2019;, &#x2018;be
achieved&#x2019; or &#x2018;has the potential to&#x2019;.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px;">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px"><font style="color: #000000">In particular, this news release contains
forward-looking information pertaining to: the use of proceeds from
sales from the Offering</font><font style="font-family: Arial; font-size: 13px">&#xA0;</font><font style="color: #000000">including the acquisition of approximate
quantities of uranium; the strategic objectives of Denison,
including the potential advancement of the Wheeler River project;
and Denison's expectations regarding its joint venture ownership
interests and the continuity of its agreements with third
parties.</font></font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px;">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">Forward looking
statements are based on the opinions and estimates of management as
of the date such statements are made, and they are subject to known
and unknown risks, uncertainties and other factors that may cause
the actual results, level of activity, performance or achievements
of Denison to be materially different from those expressed or
implied by such forward-looking statements.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px;">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">For example,
Denison may not be able to deploy the proceeds as intended, if
Uranium is not available to be purchased at all or at prices deemed
appropriate. Further, should the price of uranium materially
decline, Denison&#x2019;s strategy of acquiring and holding physical
uranium could expose Denison to significant losses and adversely
impact the financial position of the Company. In addition, the
currently anticipated evaluation and environmental assessment
activities may not be maintained after further testing or Denison
may decide or otherwise be required to alter or discontinue
testing, evaluation and development work, if it is unable to
maintain or otherwise secure the necessary approvals or resources
(such as testing facilities, capital funding, etc.) as a result of
COVID-19 pandemic-related disruptions or otherwise and the Company
may not be able to, or may choose not to, proceed to a feasibility
study, construction or production for Wheeler River. Denison
believes that the expectations reflected in this forward-looking
information are reasonable and no assurance can be given that these
expectations will prove to be accurate and results may differ
materially from those anticipated in this forward-looking
information. For a discussion in respect of risks and other factors
that could influence forward-looking events, please refer to the
factors discussed in the Management&#x2019;s Discussion &amp;
Analysis dated March 4, 2021 under the heading &#x201C;Risk
Factors&#x201D;. These factors are not, and should not be construed
as being exhaustive.</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Times New Roman; font-size: 13px">&#xA0;</font></div>
<div style="text-align: justify; margin-left: 0px; margin-right: 0px; text-indent: 0px">
<font style="font-family: Arial; font-size: 11px">Accordingly,
readers should not place undue reliance on forward-looking
statements. The forward-looking information contained in this news
release is expressly qualified by this cautionary statement. Any
forward-looking information and the assumptions made with respect
thereto speaks only as of the date of this news release. Denison
does not undertake any obligation to publicly update or revise any
forward-looking information after the date of this news release to
conform such information to actual results or to changes in
Denison's expectations except as otherwise required by applicable
legislation.</font></div>
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