-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 KutNL0KWx4f0WQB1EVANkF6Djf2p8HL4h0pAb052C8mH2uk/y7E9vQVZKMn7LMBy
 ElRtbGM/w9CbCCnsjJGvWg==

<SEC-DOCUMENT>0001179110-03-001149.txt : 20030522
<SEC-HEADER>0001179110-03-001149.hdr.sgml : 20030522
<ACCEPTANCE-DATETIME>20030521174855
ACCESSION NUMBER:		0001179110-03-001149
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030521
FILED AS OF DATE:		20030522

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DEBELLO JAMES B
		CENTRAL INDEX KEY:			0001212148

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-15235
		FILM NUMBER:		03715124

	BUSINESS ADDRESS:	
		STREET 1:		373 SAN GORGONIO ST
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92126
		BUSINESS PHONE:		6192264017

ISSUER:		

	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

	BUSINESS ADDRESS:	
		STREET 1:		14145 DANIELSON ST SUITE B
		CITY:			POWAY
		STATE:			CA
		ZIP:			92064
		BUSINESS PHONE:		858-513-4600

	MAIL ADDRESS:	
		STREET 1:		10700 CARROLL CANYON RD
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92131
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -2003-05-21
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0101</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-05-21</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000807863</issuerCik><issuerName>MITEK SYSTEMS INC</issuerName>        <issuerTradingSymbol>MITK</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001212148</rptOwnerCik><rptOwnerName>DEBELLO JAMES B</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>  </rptOwnerStreet1><rptOwnerStreet2>  </rptOwnerStreet2><rptOwnerCity>  </rptOwnerCity><rptOwnerState>  </rptOwnerState><rptOwnerZipCode>  </rptOwnerZipCode></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>President &amp; CEO</officerTitle><otherText></otherText></reportingOwnerRelationship></reportingOwner><derivativeSecurity><securityTitle><value>Stock Option</value><f
ootnoteId id="F1"/></securityTitle><conversionOrExercisePrice><value>1.06</value></conversionOrExercisePrice><transactionDate><value>2003-05-19</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>false</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>400000</value></transactionShares><transactionValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-06-18</value></exerciseDate><expirationDate><value>2013-05-18</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>400000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>440000</value></share
sOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeSecurity><footnotes><footnote id="F1">Options will vest incrementally over 36 months.  33.3% will vest immediately if there is a  change of control of company within first 90 days of issue date.  100% vesting on change of control after 90 days of issue date.</footnote></footnotes><ownerSignature><signatureName>James B. DeBello</signatureName><signatureDate>2003-05-21</signatureDate></ownerSignature></ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----