<SEC-DOCUMENT>0001127602-17-031749.txt : 20171109
<SEC-HEADER>0001127602-17-031749.hdr.sgml : 20171109
<ACCEPTANCE-DATETIME>20171109162953
ACCESSION NUMBER:		0001127602-17-031749
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20171107
FILED AS OF DATE:		20171109
DATE AS OF CHANGE:		20171109

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Griffin John M.
		CENTRAL INDEX KEY:			0001630909

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36214
		FILM NUMBER:		171191283

	MAIL ADDRESS:	
		STREET 1:		250 CAMPUS DRIVE
		CITY:			MARLBOROUGH
		STATE:			MA
		ZIP:			01752

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HOLOGIC INC
		CENTRAL INDEX KEY:			0000859737
		STANDARD INDUSTRIAL CLASSIFICATION:	X-RAY APPARATUS & TUBES & RELATED IRRADIATION APPARATUS [3844]
		IRS NUMBER:				042902449
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		250 CAMPUS DRIVE
		CITY:			MARLBOROUGH
		STATE:			MA
		ZIP:			01752
		BUSINESS PHONE:		5082632900

	MAIL ADDRESS:	
		STREET 1:		250 CAMPUS DRIVE
		CITY:			MARLBOROUGH
		STATE:			MA
		ZIP:			01752
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
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    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-11-07</periodOfReport>

    <issuer>
        <issuerCik>0000859737</issuerCik>
        <issuerName>HOLOGIC INC</issuerName>
        <issuerTradingSymbol>HOLX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001630909</rptOwnerCik>
            <rptOwnerName>Griffin John M.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>250 CAMPUS DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MARLBOROUGH</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01752</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>General Counsel</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                <value>Common Stock</value>
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    <derivativeTable>
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                </transactionShares>
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    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents vested Restricted Stock Units (RSUs) that are subject to deferral pursuant to the Issuer's Deferred Equity Plan and are voluntarily being reported on Table 1.</footnote>
        <footnote id="F2">RSUs are settled in shares of common stock on a one-for-one basis upon vesting.</footnote>
        <footnote id="F3">Reflects Performance Stock Units (PSUs) as to which the performance criteria has been satisfied, but which remain subject to service-based vesting requirements.</footnote>
        <footnote id="F4">PSUs are settled in shares of common stock on a one-for-one basis upon vesting.</footnote>
        <footnote id="F5">Includes 13,638 shares subject to deferral pursuant to the Issuer's Deferred Equity Plan.</footnote>
        <footnote id="F6">This RSU award vests in three installments beginning on the first anniversary of the grant date.</footnote>
        <footnote id="F7">These shares represent PSUs awarded to the Reporting Person pursuant to the 2008 Equity Incentive Plan and are subject to vesting as provided in the agreement evidencing the award.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Patricia K. Dolan, attorney-in-fact for Mr. Griffin</signatureName>
        <signatureDate>2017-11-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
