-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0000880984-07-000005.txt : 20070228
<SEC-HEADER>0000880984-07-000005.hdr.sgml : 20070228
<ACCEPTANCE-DATETIME>20070228175144
ACCESSION NUMBER:		0000880984-07-000005
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070223
FILED AS OF DATE:		20070228
DATE AS OF CHANGE:		20070228

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MOORE JOHN A
		CENTRAL INDEX KEY:			0001182944

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19771
		FILM NUMBER:		07659594

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		3029943083

	MAIL ADDRESS:	
		STREET 1:		403 MARSH LANE
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19807

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ACORN FACTOR, INC.
		CENTRAL INDEX KEY:			0000880984
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
		IRS NUMBER:				222786081
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		200 RTE 17
		CITY:			MAHWAH
		STATE:			NJ
		ZIP:			07430
		BUSINESS PHONE:		2015292026

	MAIL ADDRESS:	
		STREET 1:		200 ROUTE 17
		CITY:			MAHWAH
		STATE:			NJ
		ZIP:			07430

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DATA SYSTEMS & SOFTWARE INC
		DATE OF NAME CHANGE:	19931019

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DEFENSE SOFTWARE & SYSTEMS INC
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-02-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000880984</issuerCik>
        <issuerName>ACORN FACTOR, INC.</issuerName>
        <issuerTradingSymbol>ACFN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001182944</rptOwnerCik>
            <rptOwnerName>MOORE JOHN A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>403 MARSH LANE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WILMINGTON</rptOwnerCity>
            <rptOwnerState>DE</rptOwnerState>
            <rptOwnerZipCode>19807</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4.53</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-02-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>60000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2009-03-30</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2011-03-30</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>60000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>60000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The option vested as to two-thirds on the date of grant.  The remaining one-third is subject to accelerated vesting (a) upon the Issuer's Common Stock achiveving a five-day average closing market price of $5.00 or greater per share, (b) the termination of Mr. Moore's employment by the Issuer without Cause, (c) termination by Mr. Moore of his employment with the Issuer for Good Reason or (d) a Change of Control of the Issuer (each as defined in Mr. Moore's Option Agreement with the Issuer).</footnote>
        <footnote id="F2">N/A.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Sheldon Krause as Attorney-in-Fact</signatureName>
        <signatureDate>2007-02-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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