-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 Miw5zPqwNiBxXGF0jGNtFIc2QWpD/zhPzitkB1V/mUNhsKFCbIcbO8BPp3SUmMts
 BkzDPprjrT11CmXkhS4YAw==

<SEC-DOCUMENT>0001104659-05-010946.txt : 20050314
<SEC-HEADER>0001104659-05-010946.hdr.sgml : 20050314
<ACCEPTANCE-DATETIME>20050314215608
ACCESSION NUMBER:		0001104659-05-010946
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050310
FILED AS OF DATE:		20050314
DATE AS OF CHANGE:		20050314

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GENUS INC
		CENTRAL INDEX KEY:			0000837913
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
		IRS NUMBER:				942790804
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1139 KARLSTAD DRIVE
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94089-2117
		BUSINESS PHONE:		4087477120

	MAIL ADDRESS:	
		STREET 1:		1139 KARLSTAD DRIVE
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94089-2117

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MYHRE TODD
		CENTRAL INDEX KEY:			0001207689

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-17139
		FILM NUMBER:		05679975

	MAIL ADDRESS:	
		STREET 1:		123 CECELIA COURT
		CITY:			HOLLISTER
		STATE:			CA
		ZIP:			95023
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-03-10</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000837913</issuerCik>
        <issuerName>GENUS INC</issuerName>
        <issuerTradingSymbol>GGNS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001207689</rptOwnerCik>
            <rptOwnerName>MYHRE TODD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1139 KARLSTAD DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SUNNYVALE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94089</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-03-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>U</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>27535</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.04</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14042</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2005-03-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>U</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>47500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2005-03-10</value>
            </exerciseDate>
            <expirationDate>
                <value>2005-06-10</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Am Dep Shares</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>24225</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>24225</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Shares are exchangeable for shares of AIXTRON American depositary shares on a .51 to 1 conversion ratio pursuant to the terms of the Agreement and Plan of Merger dated July 1, 2004 between the Company and AIXTRON AG which became effective on March 10, 2005 (the &quot;Closing Date&quot;).</footnote>
        <footnote id="F2">Option are exercisable in exchange for shares of AIXTRON American depositary shares on a .51 (for each Genus share basis) pursuant to the terms of the Agreement and Plan of Merger dated July 1, 2004 between the Company and AIXTRON AG which became effective on the &quot;Closing Date&quot;.  The options are fully-vested as of the Closing Date and shall be exercisable within thirty days from the Closing Date.</footnote>
        <footnote id="F3">Each outstanding option shall be converted, upon exercise, into the right to receive .51 AIXTRON American depositary shares (for each Genus share) with an exercise price equal to the exercise price of the derivative security stated in the stock option agreements between Mr. Myhre and the Company divided by the conversion ratio of .51.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Irene Dunlop, by power of attorney</signatureName>
        <signatureDate>2005-03-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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