<SEC-DOCUMENT>0000807863-22-000052.txt : 20220308
<SEC-HEADER>0000807863-22-000052.hdr.sgml : 20220308
<ACCEPTANCE-DATETIME>20220308181049
ACCESSION NUMBER:		0000807863-22-000052
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220307
FILED AS OF DATE:		20220308
DATE AS OF CHANGE:		20220308

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Marcus Scott Adam
		CENTRAL INDEX KEY:			0001915787

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35231
		FILM NUMBER:		22723138

	MAIL ADDRESS:	
		STREET 1:		600 B STREET
		STREET 2:		SUITE 100
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92101

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:		600 B STREET
		STREET 2:		SUITE 100
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92101
		BUSINESS PHONE:		619-269-6800

	MAIL ADDRESS:	
		STREET 1:		600 B STREET
		STREET 2:		SUITE 100
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92101
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_164678103252160.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-03-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001915787</rptOwnerCik>
            <rptOwnerName>Marcus Scott Adam</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>600 B STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>SAN DIEGO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92101</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>General Counsel</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-03-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>42950</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>42950</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
                <footnoteId id="F5"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2022-03-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>47721</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Performance Restricted Stock Units</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>47721.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>47721</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents restricted stock units granted on March 7, 2022. Shares subject to the award vest over four years from the date of grant, with 25% of the shares subject to the award vesting on the first anniversary of the date of grant and the remaining shares vesting in three equal annual installments thereafter.</footnote>
        <footnote id="F2">Represents 47,721 performance restricted stock units (the &quot;Performance RSUs&quot;) granted on March 7, 2022, which vest based upon the achievement of certain performance criteria over the three-year period following the date of grant (each such year, a &quot;Performance Period&quot;). Performance criteria is measured on both an annual and cumulative basis as described below. 35,791 of the Performance RSUs vest if certain at-target performance criteria is met (the &quot;At-Target Performance RSUs&quot;) and 11,930 of the Performance RSUs vest if certain above-target performance criteria is met (the &quot;Above-Target Performance RSUs&quot;).</footnote>
        <footnote id="F3">Up to 33.33% of the At-Target Performance RSUs shall vest on each one-year anniversary of the date of grant if the annual performance criteria for the applicable Performance Period has been met. Up to 33.33% of the Above-Target Performance RSUs shall vest on each one-year anniversary of the date of grant if the annual performance criteria for the applicable Performance Period has been exceeded by 10% or more. If the annual performance criteria for any applicable Performance Period has not been met, then up to 100% of any such prior Performance Period's unvested Performance RSUs shall vest at the end of any subsequent annual Performance Period if the applicable cumulative performance criteria has been met. For Mitek common stock performance (whether annual or cumulative) between 85% through 100% of the performance of the Russell 2000 Index, a pro-rata portion of the At-Target Performance RSUs will vest and no Above-Target Performance RSUs will vest.</footnote>
        <footnote id="F4">With respect to At-Target Performance RSUs, the annual performance criteria for each annual Performance Period shall be for the percentage increase in value of Mitek's common stock to meet or exceed the percentage increase in value of the Russell 2000 Index over the applicable annual Performance Period. With respect to Above-Target Performance RSUs, the annual performance criteria for each annual Performance Period shall be for the percentage increase in value of Mitek's common stock to be 110% or more of the percentage increase in value of the Russell 2000 Index over the applicable annual Performance Period.</footnote>
        <footnote id="F5">For the purposes of determining the percentage increase in value of Mitek's common stock and the Russell 2000 Index, a hypothetical investment of $100 will be made in both Mitek's common stock and the Russell 2000 Index with a purchase price equal to the average closing price of each for the 20-trading days immediately preceding the start of the applicable Performance Period. At the end of the applicable Performance Period, the value of the hypothetical investments shall be determined by assuming the sale of each based on the average closing price of each from the immediately preceding 20-trading days. The percentage change shall be determined by comparing the increase in value to the starting investment of $100.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Frank Teruel, by Power of Attorney</signatureName>
        <signatureDate>2022-03-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
