<SEC-DOCUMENT>0001209191-19-044123.txt : 20190801
<SEC-HEADER>0001209191-19-044123.hdr.sgml : 20190801
<ACCEPTANCE-DATETIME>20190801193146
ACCESSION NUMBER:		0001209191-19-044123
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190730
FILED AS OF DATE:		20190801
DATE AS OF CHANGE:		20190801

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ANDEAVOR LLC
		CENTRAL INDEX KEY:			0000050104
		STANDARD INDUSTRIAL CLASSIFICATION:	PETROLEUM REFINING [2911]
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35714
		FILM NUMBER:		19994095

	BUSINESS ADDRESS:	
		STREET 1:		539 SOUTH MAIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840-3229
		BUSINESS PHONE:		419-421-2159

	MAIL ADDRESS:	
		STREET 1:		539 SOUTH MAIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840-3229

	FORMER NAME:	
		FORMER CONFORMED NAME:	ANDEAVOR
		DATE OF NAME CHANGE:	20170801

	FORMER NAME:	
		FORMER CONFORMED NAME:	TESORO CORP /NEW/
		DATE OF NAME CHANGE:	20041108

	FORMER NAME:	
		FORMER CONFORMED NAME:	TESORO PETROLEUM CORP /NEW/
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Western Refining Southwest, Inc.
		CENTRAL INDEX KEY:			0000912517
		STATE OF INCORPORATION:			AZ
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35714
		FILM NUMBER:		19994096

	BUSINESS ADDRESS:	
		STREET 1:		539 SOUTH MAIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840-3229
		BUSINESS PHONE:		419-421-2159

	MAIL ADDRESS:	
		STREET 1:		539 SOUTH MAIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840-3229

	FORMER NAME:	
		FORMER CONFORMED NAME:	GIANT INDUSTRIES ARIZONA INC
		DATE OF NAME CHANGE:	19930923

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Tesoro Logistics GP, LLC
		CENTRAL INDEX KEY:			0001517724
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35714
		FILM NUMBER:		19994097

	BUSINESS ADDRESS:	
		STREET 1:		200 E. HARDIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840
		BUSINESS PHONE:		419-421-2159

	MAIL ADDRESS:	
		STREET 1:		200 E. HARDIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Western Refining, Inc.
		CENTRAL INDEX KEY:			0001339048
		STANDARD INDUSTRIAL CLASSIFICATION:	PETROLEUM REFINING [2911]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35714
		FILM NUMBER:		19994098

	BUSINESS ADDRESS:	
		STREET 1:		539 SOUTH MAIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840-3229
		BUSINESS PHONE:		419-421-2159

	MAIL ADDRESS:	
		STREET 1:		539 SOUTH MAIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840-3229

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Giant Industries, Inc.
		CENTRAL INDEX KEY:			0000856465
		STANDARD INDUSTRIAL CLASSIFICATION:	PETROLEUM REFINING [2911]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35714
		FILM NUMBER:		19994099

	BUSINESS ADDRESS:	
		STREET 1:		1250 W. WASHINGTON STREET, SUITE 101
		CITY:			TEMPE
		STATE:			AZ
		ZIP:			85281
		BUSINESS PHONE:		(602) 286-1401

	MAIL ADDRESS:	
		STREET 1:		1250 W. WASHINGTON STREET, SUITE 101
		CITY:			TEMPE
		STATE:			AZ
		ZIP:			85281

	FORMER NAME:	
		FORMER CONFORMED NAME:	GIANT INDUSTRIES INC
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TESORO REFINING & MARKETING Co LLC
		CENTRAL INDEX KEY:			0001144853
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35714
		FILM NUMBER:		19994100

	BUSINESS ADDRESS:	
		STREET 1:		539 SOUTH MAIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840-3229
		BUSINESS PHONE:		419-421-2159

	MAIL ADDRESS:	
		STREET 1:		539 SOUTH MAIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840-3229

	FORMER NAME:	
		FORMER CONFORMED NAME:	TESORO REFINING & MARKETING CO
		DATE OF NAME CHANGE:	20020107

	FORMER NAME:	
		FORMER CONFORMED NAME:	TESORO WEST COAST CO
		DATE OF NAME CHANGE:	20010712

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Tesoro Alaska Co LLC
		CENTRAL INDEX KEY:			0000911614
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35714
		FILM NUMBER:		19994101

	BUSINESS ADDRESS:	
		STREET 1:		539 SOUTH MAIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840-3229
		BUSINESS PHONE:		419-421-2159

	MAIL ADDRESS:	
		STREET 1:		539 SOUTH MAIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840-3229

	FORMER NAME:	
		FORMER CONFORMED NAME:	Tesoro Alaska Pipeline Co LLC
		DATE OF NAME CHANGE:	20160223

	FORMER NAME:	
		FORMER CONFORMED NAME:	TESORO ALASKA Co LLC
		DATE OF NAME CHANGE:	20141007

	FORMER NAME:	
		FORMER CONFORMED NAME:	TESORO ALASKA CO
		DATE OF NAME CHANGE:	20010716

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MPLX LP
		CENTRAL INDEX KEY:			0001552000
		STANDARD INDUSTRIAL CLASSIFICATION:	PIPE LINES (NO NATURAL GAS) [4610]
		IRS NUMBER:				270005456
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		200 E. HARDIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840
		BUSINESS PHONE:		(419) 421-2159

	MAIL ADDRESS:	
		STREET 1:		200 E. HARDIN STREET
		CITY:			FINDLAY
		STATE:			OH
		ZIP:			45840
</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>2019-07-30</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001552000</issuerCik>
        <issuerName>MPLX LP</issuerName>
        <issuerTradingSymbol>MPLX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000050104</rptOwnerCik>
            <rptOwnerName>ANDEAVOR LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>539 SOUTH MAIN STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FINDLAY</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45840-3229</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000912517</rptOwnerCik>
            <rptOwnerName>Western Refining Southwest, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>539 S. MAIN ST.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FINDLAY</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45840</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001517724</rptOwnerCik>
            <rptOwnerName>Tesoro Logistics GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>539 S. MAIN ST.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FINDLAY</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45840</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Less than 10% owner</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001339048</rptOwnerCik>
            <rptOwnerName>Western Refining, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>539 SOUTH MAIN STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FINDLAY</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45840-3229</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000856465</rptOwnerCik>
            <rptOwnerName>Giant Industries, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>539 SOUTH MAIN STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FINDLAY</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45840-3229</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001144853</rptOwnerCik>
            <rptOwnerName>TESORO REFINING &amp; MARKETING Co LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>539 SOUTH MAIN STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FINDLAY</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45840-3229</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Less than 10% owner</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000911614</rptOwnerCik>
            <rptOwnerName>Tesoro Alaska Co LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>539 SOUTH MAIN STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FINDLAY</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45840-3229</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Less than 10% owner</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Units (Limited Partner Interests)</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>504701934</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This Form 3 is submitted jointly by Andeavor LLC (as successor by merger to Andeavor), Western Refining, Inc. (&quot;WRI&quot;), Giant Industries, Inc. (&quot;GII&quot;), Western Refining Southwest, Inc. (&quot;WRSI&quot;), Tesoro Refining &amp; Marketing Company LLC (&quot;TRMC&quot;), Tesoro Alaska Company LLC (&quot;TAC&quot;), and Tesoro Logistics GP, LLC (&quot;TLGP&quot;) which, effective as of July 30, 2019, and pursuant to the Agreement and Plan of Merger, dated as of May 7, 2019, by and among the Issuer, Andeavor Logistics LP, TLGP, MPLX GP LLC (the &quot;General Partner&quot;) and MPLX MAX LLC, became a part of the reporting group which includes Marathon Petroleum Corporation (&quot;MPC&quot;), MPC Investment LLC (&quot;MPC Investment&quot;), the General Partner, and MPLX Logistics Holdings LLC (&quot;Logistics Holdings&quot;).</footnote>
        <footnote id="F2">MPC Investment, a direct wholly-owned subsidiary of MPC, owns all of the membership interests in the General Partner and Logistics Holdings. Andeavor LLC is a wholly owned subsidiary of MPC. WRI is a wholly owned subsidiary of Andeavor LLC. GII is a wholly owned subsidiary of WRI. WRSI is a wholly owned subsidiary of GII. TRMC and TAC are wholly owned subsidiaries of WRSI. All of the membership interests in TLGP are held by TRMC, TAC, and WRSI. Accordingly, MPC Investment, the General Partner, Logistics Holdings, Andeavor LLC, WRI, GII, WRSI, TRMC, TAC and TLGP are all direct or indirect wholly owned subsidiaries of MPC.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Molly R. Benson, Vice President and Secretary, Andeavor LLC</signatureName>
        <signatureDate>2019-08-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Molly R. Benson, Vice President and Secretary, Western Refining Southwest, Inc.</signatureName>
        <signatureDate>2019-08-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Molly R. Benson, Vice President, Chief Securities, Governance &amp; Compliance Officer and Corporate Secretary, Tesoro Logistics GP, LLC</signatureName>
        <signatureDate>2019-08-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Molly R. Benson, Vice President and Secretary, Western Refining, Inc.</signatureName>
        <signatureDate>2019-08-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Molly R. Benson, Vice President and Secretary, Giant Industries, Inc.</signatureName>
        <signatureDate>2019-08-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Molly R. Benson, Vice President and Secretary, Tesoro Refining &amp; Marketing Company LLC</signatureName>
        <signatureDate>2019-08-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Molly R. Benson, Vice President and Secretary, Tesoro Alaska Company LLC</signatureName>
        <signatureDate>2019-08-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
