<SEC-DOCUMENT>0000807863-11-000015.txt : 20111014
<SEC-HEADER>0000807863-11-000015.hdr.sgml : 20111014
<ACCEPTANCE-DATETIME>20111014164242
ACCESSION NUMBER:		0000807863-11-000015
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20111011
FILED AS OF DATE:		20111014
DATE AS OF CHANGE:		20111014

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CLARK RUSSELL C.
		CENTRAL INDEX KEY:			0001437701

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35231
		FILM NUMBER:		111142235

	MAIL ADDRESS:	
		STREET 1:		18200 VON KARMAN
		STREET 2:		SUITE 1000
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92612

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:		8911 BALBOA AVE., SUITE B
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92123
		BUSINESS PHONE:		858-503-7810

	MAIL ADDRESS:	
		STREET 1:		8911 BALBOA AVE., SUITE B
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92123
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0304</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2011-10-11</periodOfReport>

    <dateOfOriginalSubmission>2011-10-13</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000807863</issuerCik>
        <issuerName>MITEK SYSTEMS INC</issuerName>
        <issuerTradingSymbol>MITK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001437701</rptOwnerCik>
            <rptOwnerName>CLARK RUSSELL C.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>18200 VON KARMAN</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1000</rptOwnerStreet2>
            <rptOwnerCity>IRVINE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92612</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>9.97</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2011-10-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>200000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2011-11-11</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2021-10-11</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>200000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>200000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The option vests ratably over 36 months from date of grant; the first tranche is exercisable on 11/11/2011, thirty days from the grant date.</footnote>
    </footnotes>

    <remarks>Amendment filed to submit Power of Attorney.</remarks>

    <ownerSignature>
        <signatureName>/s/ Fred Hutton, by Power of Attorney</signatureName>
        <signatureDate>2011-10-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>clark1.txt
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
POWER OF ATTORNEY

  Know by all these presents that the undersigned hereby constitutes and
appoints each of James B. DeBello, John M. Thornton and Fred Hutton,
signing singly, the undersigned's true and lawful attorney-in-fact to:
(1)	execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and/or director of Mitek Systems, Inc. (the
("Company"), Forms 3, 4 and 5 in accordance with Section 16(a) of
the Securities Exchange Act of 1934, as amended and the rules
thereunder ;
(2)	do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete and
execute any such Form 3, 4 or 5 and timely file such form with the
United States Securities and Exchange Commission and any stock
exchange or similar authority; and
(3)	take any other action of any type whatsoever in connection with
the forgoing which, in the opinion of such attorney-in-fact, may
be of benefit to, in the best interest of, or legally required by,
the undersigned, it being understood that the documents executed
by such attorney-in-fact on behalf of the undersigned pursuant to
the Power of Attorney shall be in such form and shall contain such
terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

  The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all in intents and purposes
as the undersigned might or could do if personally present, with full power
of substitution or revocation, hereby ratifying and confirming all that
such attorney-in-fact, or such attorney-in-fact's substitute or
substitutes, shall lawfully do or cause to be done by virtue of this power
of attorney and the rights and powers herein granted.  The undersigned
acknowledges that the foregoing attorneys-in-fact, in serving in such
capacity at the request of the undersigned, are not assuming, nor is the
Company assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934, as amended.
  This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to
the undersigned's holdings and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.
  IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 11th day of October 2011.

/s/ Russell C. Clark
Russell C. Clark

  An insider of an issuer that is registering equity securities for the
first time under Section 12 of the Exchange Act must file a Form 3 no later
than the effective date of the registration statement. If the issuer is
already registered under Section 12, the insider must file a Form 3 within
ten days of becoming an officer, director, or beneficial owner.

Changes in ownership are reported on Form 4 and must be reported to the SEC
within two business days.

Insiders must file a Form 5 to report any transactions that should have
been reported earlier on a Form 4 or were eligible for deferred reporting.
If a Form must be filed, it is due 45 days after the end of the company's
fiscal year.




</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
