<SEC-DOCUMENT>0001193125-17-050537-index.html : 20170221
<SEC-HEADER>0001193125-17-050537.hdr.sgml : 20170221
<ACCEPTANCE-DATETIME>20170221170232
ACCESSION NUMBER:		0001193125-17-050537
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20170221
DATE AS OF CHANGE:		20170221
EFFECTIVENESS DATE:		20170221

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MITEK SYSTEMS INC
		CENTRAL INDEX KEY:			0000807863
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER PERIPHERAL EQUIPMENT, NEC [3577]
		IRS NUMBER:				870418827
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35231
		FILM NUMBER:		17625837

	BUSINESS ADDRESS:	
		STREET 1:		8911 BALBOA AVE.
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92123
		BUSINESS PHONE:		858-309-1700

	MAIL ADDRESS:	
		STREET 1:		8911 BALBOA AVE.
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92123
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>d354007ddefa14a.htm
<DESCRIPTION>DEFINITIVE ADDITIONAL MATERIALS
<TEXT>
Document 1 - file: d354007ddefa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g354007g0221091340020.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g354007g0221091340020.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g354007g0221091340082.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g354007g0221091340082.jpg

</DOCUMENT>
</SEC-DOCUMENT>