-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 PeGaafoirPkTf++PlXaURcKfSCUYNoz6wvdjAtvjDuodcsRRr4cglkq5OaR8vj1U
 qS9260aDWulnsWokErp6Dw==

<SEC-DOCUMENT>0000950103-10-001694.txt : 20100607
<SEC-HEADER>0000950103-10-001694.hdr.sgml : 20100607
<ACCEPTANCE-DATETIME>20100607160830
ACCESSION NUMBER:		0000950103-10-001694
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20100607
DATE AS OF CHANGE:		20100607
EFFECTIVENESS DATE:		20100607

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			USI Midstream Holdings, LLC
		CENTRAL INDEX KEY:			0001477319
		IRS NUMBER:				800492963
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-143068
		FILM NUMBER:		10881548

	BUSINESS ADDRESS:	
		STREET 1:		500 N. CAPITAL OF TEXAS HIGHWAY
		STREET 2:		BUILDING #3, SUITE 100
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78746
		BUSINESS PHONE:		512-328-9090

	MAIL ADDRESS:	
		STREET 1:		500 N. CAPITAL OF TEXAS HIGHWAY
		STREET 2:		BUILDING #3, SUITE 100
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78746
</SEC-HEADER>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001477319</cik>
        <entityName>USI Midstream Holdings, LLC</entityName>
        <issuerAddress>
            <street1>500 N. CAPITAL OF TEXAS HIGHWAY</street1>
            <street2>BUILDING #3, SUITE 100</street2>
            <city>AUSTIN</city>
            <stateOrCountry>TX</stateOrCountry>
            <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
            <zipCode>78746</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>512-415-9090</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Limited Liability Company</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2009</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Howard</firstName>
                <lastName>Hoffen</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Metalmark Capital Holdings LLC</street1>
                <street2>1177 Avenue of the Americas, 40th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10036</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Greg</firstName>
                <middleName>W.</middleName>
                <lastName>Sales</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Monarch Investment Holdings, LLC</street1>
                <street2>5613 DTC Parkway, Suite 200</street2>
                <city>Greenwood Village</city>
                <stateOrCountry>CO</stateOrCountry>
                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
                <zipCode>80111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Terry</firstName>
                <lastName>Klare</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Monarch Investment Holdings, LLC</street1>
                <street2>5613 DTC Parkway, Suite 200</street2>
                <city>Greenwood Village</city>
                <stateOrCountry>CO</stateOrCountry>
                <stateOrCountryDescription>COLORADO</stateOrCountryDescription>
                <zipCode>80111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Gregory</firstName>
                <lastName>Myers</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Metalmark Capital Holdings LLC</street1>
                <street2>1177 Avenue of the Americas, 40th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10036</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Martin</firstName>
                <lastName>McNulty</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Metalmark Capital Holdings LLC</street1>
                <street2>1177 Avenue of the Americas, 40th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10036</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Gilbert</firstName>
                <lastName>Burciaga</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>US Infrastructure LP</street1>
                <street2>500 N. Capital of Texas Highway, Bldg. 3</street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>78746</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Zachary</firstName>
                <lastName>Lee</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>US Infrasructure LP</street1>
                <street2>500 N. Capital of Texas Highway, Bldg. 3</street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>78746</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Elias</firstName>
                <lastName>Urbina</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>US Infrastructure LP</street1>
                <street2>500 N. Capital of Texas Highway, Bldg. 3</street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>78746</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Oil and Gas</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2010-05-24</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>4000000</totalOfferingAmount>
            <totalAmountSold>4000000</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>6</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>USI Midstream Holdings, LLC</issuerName>
                <signatureName>/s/ Elias F. Urbina</signatureName>
                <nameOfSigner>Elias F. Urbina</nameOfSigner>
                <signatureTitle>CFO</signatureTitle>
                <signatureDate>2010-06-07</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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