<SEC-DOCUMENT>0001104659-19-021974.txt : 20190417
<SEC-HEADER>0001104659-19-021974.hdr.sgml : 20190417
<ACCEPTANCE-DATETIME>20190417170000
ACCESSION NUMBER:		0001104659-19-021974
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190415
FILED AS OF DATE:		20190417
DATE AS OF CHANGE:		20190417

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Schopp Alvyn A.
		CENTRAL INDEX KEY:			0001586799

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38075
		FILM NUMBER:		19753563

	MAIL ADDRESS:	
		STREET 1:		1625 17TH STREET
		CITY:			DENVER
		STATE:			CO
		ZIP:			80202

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Antero Midstream Corp
		CENTRAL INDEX KEY:			0001623925
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				611748605
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1615 WYNKOOP STREET
		CITY:			DENVER
		STATE:			CO
		ZIP:			80202
		BUSINESS PHONE:		(303) 357-7310

	MAIL ADDRESS:	
		STREET 1:		1615 WYNKOOP STREET
		CITY:			DENVER
		STATE:			CO
		ZIP:			80202

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Antero Midstream GP LP
		DATE OF NAME CHANGE:	20170505

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Antero Resources Midstream Management LLC
		DATE OF NAME CHANGE:	20141031
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>4
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    <documentType>4</documentType>

    <periodOfReport>2019-04-15</periodOfReport>

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    <issuer>
        <issuerCik>0001623925</issuerCik>
        <issuerName>Antero Midstream Corp</issuerName>
        <issuerTradingSymbol>AM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001586799</rptOwnerCik>
            <rptOwnerName>Schopp Alvyn A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1615 WYNKOOP STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DENVER</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80202</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>See Remarks</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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            <securityTitle>
                <value>Common stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2019-04-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6991</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.16</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1473910</value>
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        <nonDerivativeTransaction>
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                <value>Common stock, par value $0.01 per share</value>
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        </nonDerivativeTransaction>
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    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance Share Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
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                <value>2019-04-15</value>
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                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>15890</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F5"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>15890</value>
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    <footnotes>
        <footnote id="F1">In connection with the vesting and settlement of restricted stock units through the issuance of common stock of the Issuer (&quot;Common Stock&quot;) pursuant to the Antero Midstream Corporation Long Term Incentive Plan, the Issuer withheld Common Stock that would otherwise have been issued to the Reporting Person to satisfy its tax withholding obligations.  The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on April 15, 2019.</footnote>
        <footnote id="F2">Includes 23,993 shares of Common Stock subject to previously granted restricted stock unit awards that remain subject to vesting.</footnote>
        <footnote id="F3">Common Stock subject to a Restricted Stock Unit Grant Notice and Restricted Stock Unit Agreement that vest in four equal installments on the first four anniversaries of the grant date.</footnote>
        <footnote id="F4">Each performance share unit (&quot;PSU&quot;) represents a contingent right to receive one share of common stock of the Issuer.</footnote>
        <footnote id="F5">The PSUs vest on April 15, 2022 based upon the Issuer's achievement of absolute total shareholder return goals. Depending on the level of achievement of such goals, the actual number of PSUs earned could range from 0% to 200% of the target number of PSUs, as shown in columns 5 and 6.</footnote>
    </footnotes>

    <remarks>Mr. Schopp is the Chief Administrative Officer, Regional Senior Vice President and Treasurer of the Issuer.</remarks>

    <ownerSignature>
        <signatureName>/s/ Alvyn A. Schopp</signatureName>
        <signatureDate>2019-04-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</DOCUMENT>
</SEC-DOCUMENT>
