<SEC-DOCUMENT>0000899243-17-022269.txt : 20170919
<SEC-HEADER>0000899243-17-022269.hdr.sgml : 20170919
<ACCEPTANCE-DATETIME>20170919110221
ACCESSION NUMBER:		0000899243-17-022269
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170914
FILED AS OF DATE:		20170919
DATE AS OF CHANGE:		20170919

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			OPEN TEXT CORP
		CENTRAL INDEX KEY:			0001002638
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		STATE OF INCORPORATION:			A6
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33197
		FILM NUMBER:		171091334

	BUSINESS ADDRESS:	
		STREET 1:		275 FRANK TOMPA DRIVE
		STREET 2:		WATERLOO
		CITY:			ONTARIO CANADA
		STATE:			A6
		ZIP:			N2L 0A1
		BUSINESS PHONE:		519-888-7111

	MAIL ADDRESS:	
		STREET 1:		275 FRANK TOMPA DRIVE
		STREET 2:		WATERLOO
		CITY:			ONTARIO CANADA
		STATE:			A6
		ZIP:			N2L 0A1

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Guidance Software, Inc.
		CENTRAL INDEX KEY:			0001375557
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				954661210
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1055 EAST COLORADO BOULEVARD
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101-2375
		BUSINESS PHONE:		626-229-9191

	MAIL ADDRESS:	
		STREET 1:		1055 EAST COLORADO BOULEVARD
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101-2375

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	United Online, Inc.
		DATE OF NAME CHANGE:	20150812

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Guidance Software, Inc.
		DATE OF NAME CHANGE:	20060914
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2017-09-14</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001375557</issuerCik>
        <issuerName>Guidance Software, Inc.</issuerName>
        <issuerTradingSymbol>GUID</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001002638</rptOwnerCik>
            <rptOwnerName>OPEN TEXT CORP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>275 FRANK TOMPA DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WATERLOO</rptOwnerCity>
            <rptOwnerState>A6</rptOwnerState>
            <rptOwnerZipCode>N2L 0A1</rptOwnerZipCode>
            <rptOwnerStateDescription>ONTARIO, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $0.001 per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1000</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Through a wholly owned subsidiary</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On September 14, 2017, Open Text Corporation (&quot;Parent&quot;) and Galileo Acquisition Sub Inc. (&quot;Purchaser&quot;) completed the transactions contemplated by the Agreement and Plan of Merger, dated as of July 25, 2017, by and among Guidance Software, Inc. ( &quot;Issuer&quot;), Parent and Purchaser (the &quot;Merger Agreement&quot;). Pursuant to the terms of the Merger Agreement, Purchaser merged with and into Issuer (the &quot;Merger&quot;), with the Issuer surviving the Merger as a wholly-owned subsidiary of Parent (the &quot;Surviving Corporation&quot;) and Purchaser ceasing to exist following the Merger. At the effective time of the Merger, the outstanding shares of common stock of Purchaser were converted into and became shares of the Surviving Corporation.</footnote>
        <footnote id="F2">Prior to the Merger, Purchaser was a wholly-owned subsidiary of Rocket Holdco, Inc., which was a wholly-owned subsidiary of Parent. Subsequent to the Merger, Issuer is a wholly-owned subsidiary of Rocket Holdco, Inc., which is a wholly-owned subsidiary of Parent.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Gordon Davies, EVP, Chief Legal Officer and Corporate Development</signatureName>
        <signatureDate>2017-09-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
