-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 BW4invZpswxG60KRAI3WbCCl5x1v6K3hKTL7cWyYo9RAv+BBMUCSrdvM5362IpKa
 I0Y2nDJyOAJUPdiB98HBdQ==

<SEC-DOCUMENT>0001468508-09-000003.txt : 20090727
<SEC-HEADER>0001468508-09-000003.hdr.sgml : 20090727
<ACCEPTANCE-DATETIME>20090727135445
ACCESSION NUMBER:		0001468508-09-000003
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20090727
DATE AS OF CHANGE:		20090727
EFFECTIVENESS DATE:		20090727

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Six3 Systems Holdings, LLC
		CENTRAL INDEX KEY:			0001468508
		IRS NUMBER:				800441938
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-133096
		FILM NUMBER:		09964185

	BUSINESS ADDRESS:	
		STREET 1:		C/O GTCR GOLDER RAUNER II, L.L.C.
		STREET 2:		300 NORTH LASALLE STREET, SUITE 5600
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60654
		BUSINESS PHONE:		312-382-2200

	MAIL ADDRESS:	
		STREET 1:		C/O GTCR GOLDER RAUNER II, L.L.C.
		STREET 2:		300 NORTH LASALLE STREET, SUITE 5600
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60654
</SEC-HEADER>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0502</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001468508</cik>
        <entityName>Six3 Systems Holdings, LLC</entityName>
        <issuerAddress>
            <street1>C/O GTCR GOLDER RAUNER II, L.L.C.</street1>
            <street2>300 NORTH LASALLE STREET, SUITE 5600</street2>
            <city>CHICAGO</city>
            <stateOrCountry>IL</stateOrCountry>
            <zipCode>60654</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>312-382-2200</issuerPhoneNumber>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <entityType>Limited Liability Company</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2009</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <middleName>A.</middleName>
                <lastName>Coleman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>13313 Balmoral Heights Place</street1>
                <street2></street2>
                <city>Clifton</city>
                <stateOrCountry>VA</stateOrCountry>
                <zipCode>20124</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chief Executive Officer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jack</firstName>
                <middleName></middleName>
                <lastName>Pearlstein</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5122 Warren Place, NW</street1>
                <street2></street2>
                <city>Washington</city>
                <stateOrCountry>DC</stateOrCountry>
                <zipCode>20016</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chief Financial Officer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Craig</firstName>
                <middleName>A.</middleName>
                <lastName>Bondy</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o GTCR Golder Rauner II, L.L.C.</street1>
                <street2>300 North LaSalle Street, Suite 5600</street2>
                <city>Chicago</city>
                <stateOrCountry>IL</stateOrCountry>
                <zipCode>60654</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2009-07-21</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>306000000</totalOfferingAmount>
            <totalAmountSold>53942567</totalAmountSold>
            <totalRemaining>252057433</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>5</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>2100000</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse>This represents three years of annual salary for the Chief Executive Officer and Chief Financial Officer.  However, the salary may be increased and/or the period of employment may last longer than three years.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Six3 Systems Holdings, LLC</issuerName>
                <signatureName>Jack Pearlstein</signatureName>
                <nameOfSigner>Jack Pearlstein</nameOfSigner>
                <signatureTitle>Chief Financial Officer</signatureTitle>
                <signatureDate>2009-07-24</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----