<SEC-DOCUMENT>0001062993-18-001679.txt : 20180417
<SEC-HEADER>0001062993-18-001679.hdr.sgml : 20180417
<ACCEPTANCE-DATETIME>20180417134115
ACCESSION NUMBER:		0001062993-18-001679
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180417
DATE AS OF CHANGE:		20180417

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Security Devices International Inc.
		CENTRAL INDEX KEY:			0001354866
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		IRS NUMBER:				711050654
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-223995
		FILM NUMBER:		18758527

	BUSINESS ADDRESS:	
		STREET 1:		9325 PUCKETT ROAD
		CITY:			PERRY
		STATE:			FL
		ZIP:			32348
		BUSINESS PHONE:		905-582-6402

	MAIL ADDRESS:	
		STREET 1:		9325 PUCKETT ROAD
		CITY:			PERRY
		STATE:			FL
		ZIP:			32348
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>form424b3.htm
<DESCRIPTION>424B3
<TEXT>
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   <TITLE>Security Devices International Inc.: Form 424B3 - Filed by newsfilecorp.com</TITLE>
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<P align=right><B>Filed pursuant to Rule 424(b)(3) <BR>Registration No.
333-223995 </B></P>
<P align=center><B>PROSPECTUS SUPPLEMENT NO. 1</B> <BR><B>TO THE PROSPECTUS
DATED APRIL 9, 2018</B> </P>
<P align=center><B><font size="3">SECURITY DEVICES INTERNATIONAL INC.</font></B><font size="3">
</font> </P>
<P align=center><B><font size="3">COMMON STOCK</font></B><font size="3"> </font> </P>
<P align=justify>This Prospectus Supplement No. 1 updates, amends and
supplements the Prospectus dated April 9, 2018, pursuant to which a number of
the shareholders and warrant holders of Security Devices International Inc.
(&#147;we,&#148; &#147;our,&#148; &#147;us,&#148; &#147;SDI&#148; or the &#147;Company&#148;) are offering to sell shares of the
Company&#146;s common stock, par value $0.001 per share, which forms a part of our
Registration Statement on Form S-1, as amended (Registration No. 333-223995).
</P>
<P align=justify>We are incorporating by reference into this Prospectus
Supplement No. 1 our Quarterly Report on Form 10-Q for the quarter ended
February 28, 2018, filed with the Securities and Exchange Commission (the &#147;SEC&#148;)
on April 16, 2018 and our Current Report on Form 8-K filed with the SEC on April
16, 2018. </P>
<P align=justify>This Prospectus Supplement No. 1 should be read in conjunction
with the prospectus. To the extent information in this Prospectus Supplement No.
1 differs from, updates or conflicts with information contained in the
prospectus, the information in this Prospectus Supplement No. 1 is the more
current information. </P>
<P align=justify><B>The purchase of the securities offered by the prospectus
involves a high degree of risk. Risk factors include our history of losses and
our need for additional capital. You should review carefully the &#147;Risk Factors&#148;
beginning on page 25 of our Annual Report on Form 10-K for our fiscal year ended
November 30, 2017, which is incorporated into the prospectus by reference, and
in our Quarterly Report on Form 10-Q for the quarter ended February 28, 2018
which is incorporated by reference herein, as such &#147;Risk Factors&#148; may be
amended, supplemented or superseded from time to time by other reports that we
subsequently file with the SEC and incorporate by reference into the
prospectus.</B> </P>
<P align=justify><B>Neither the Securities and Exchange Commission nor any state
securities commission has approved or disapproved of these securities or passed
upon the adequacy or accuracy of this prospectus supplement. Any representation
to the contrary is a criminal offense.</B> </P>
<P align=center><B>The date of this prospectus supplement is April 17, 2018.</B>
</P>
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<P align=center><B>INCORPORATION BY REFERENCE </B></P>
<P align=justify>The SEC allows us to &#147;incorporate by reference&#148; into this
prospectus supplement certain information that we have previously filed, which
means that we can disclose important information to you by referring you to
those documents. The documents and information incorporated by reference are
considered part of this prospectus supplement and the prospectus. The following
documents that we have filed with the SEC are hereby incorporated by reference
into this prospectus supplement: </P>
<TABLE
style="BORDER-COLOR: black; FONT-SIZE: 10pt; BORDER-COLLAPSE: collapse; "
cellSpacing=0 cellPadding=0 width="100%" border=0>

  <TR vAlign=top>
    <TD width="5%"  >&nbsp;</TD>
    <TD align=left  >
      <P align=justify>&#149;</P></TD>
    <TD align=left width="90%">Our Quarterly Report on Form 10-Q for the
      quarter ended February 28, 2018, filed on April 16, 2018; and </TD></TR>
  <TR>
    <TD width="5%" >&nbsp;</TD>
    <TD align=left  >
      <P align=justify>&nbsp;</P></TD>
    <TD align=left width="90%" >&nbsp;</TD></TR>
  <TR vAlign=top>
    <TD width="5%" >&nbsp;</TD>
    <TD align=left  >
      <P align=justify>&#149;</P></TD>
    <TD align=left width="90%">Our Current Report on Form 8-K filed on April
      16, 2018. </TD></TR></TABLE>
<P align=justify>Upon written or oral request, we will provide, without charge,
to each person, including beneficial owners of our securities, to whom a copy of
this prospectus supplement is delivered, a copy of any or all of the information
incorporated by reference in this prospectus supplement (other than exhibits to
such documents, unless the exhibits are specifically incorporated by reference
in such documents). Your requests for copies should be directed to: </P>
<TABLE
style="BORDER-COLOR: black; FONT-SIZE: 10pt; BORDER-COLLAPSE: collapse; "
cellSpacing=0 cellPadding=0 width="100%" border=0>

  <TR vAlign=top>
    <TD align=center>Security Devices International Inc. </TD></TR>
  <TR vAlign=top>
    <TD align=center>107 Audubon Road, Bldg 2, Suite 201 </TD></TR>
  <TR vAlign=bottom>
    <TD align=center>Wakefield, MA 01880 </TD></TR>
  <TR vAlign=bottom>
    <TD align=center>(978) 868-5011 </TD></TR>
  <TR vAlign=bottom>
    <TD align=center>dthrasher@securitydii.com. </TD></TR></TABLE>
<P align=justify>These filings may also be obtained through our website located
at <U>www.securitydii.com</U>. Except for the documents incorporated by
reference as noted above, the information on, or accessible through, our website
is not intended to be part of this prospectus supplement. </P>
<P align=justify>Pursuant to Rule 412 under the Securities Act, any statement
contained in a document incorporated or deemed to be incorporated by reference
into this prospectus supplement will be deemed to be modified or superseded for
purposes of this prospectus supplement to the extent that a statement contained
in this prospectus supplement or any other subsequently filed document that is
deemed to be incorporated by reference into the prospectus modifies or
supersedes the statement. Any statement so modified or superseded will not be
deemed, except as so modified or superseded, to constitute a part of this
prospectus supplement or the prospectus. </P>
<P align=justify>You should rely only on the information incorporated by
reference or provided in the prospectus, this prospectus supplement or any other
prospectus supplement that we may file in the future. We have not authorized
anyone else to provide you with different information. You should not assume
that information in this prospectus supplement or any other prospectus
supplement is accurate as of any date other than the date on the front of such
document. </P>
<P align=justify>We advise that there have been no material changes in our
affairs that have occurred since the end of the latest fiscal period for which
audited financial statements were included in our latest Annual Report on Form
10-K and that have not been described in a Quarterly Report on Form 10-Q or a
Current Report on Form 8-K filed under the Exchange Act. </P>
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