<SEC-DOCUMENT>0001127602-18-019314.txt : 20180531
<SEC-HEADER>0001127602-18-019314.hdr.sgml : 20180531
<ACCEPTANCE-DATETIME>20180531155218
ACCESSION NUMBER:		0001127602-18-019314
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180510
FILED AS OF DATE:		20180531
DATE AS OF CHANGE:		20180531

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Madden Michael T
		CENTRAL INDEX KEY:			0001485027

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38061
		FILM NUMBER:		18871450

	MAIL ADDRESS:	
		STREET 1:		16243 HIGHWAY 216
		CITY:			BROOKWOOD
		STATE:			AL
		ZIP:			35444

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WARRIOR MET COAL, INC.
		CENTRAL INDEX KEY:			0001691303
		STANDARD INDUSTRIAL CLASSIFICATION:	BITUMINOUS COAL & LIGNITE MINING [1220]
		IRS NUMBER:				810706839
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		16243 HIGHWAY 216
		CITY:			BROOKWOOD
		STATE:			AL
		ZIP:			35444
		BUSINESS PHONE:		2055546150

	MAIL ADDRESS:	
		STREET 1:		16243 HIGHWAY 216
		CITY:			BROOKWOOD
		STATE:			AL
		ZIP:			35444

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WARRIOR MET COAL, LLC
		DATE OF NAME CHANGE:	20161201
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>form4a.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2018-05-10</periodOfReport>

    <dateOfOriginalSubmission>2018-05-14</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0001691303</issuerCik>
        <issuerName>WARRIOR MET COAL, INC.</issuerName>
        <issuerTradingSymbol>HCC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001485027</rptOwnerCik>
            <rptOwnerName>Madden Michael T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>16243 HIGHWAY 216</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BROOKWOOD</rptOwnerCity>
            <rptOwnerState>AL</rptOwnerState>
            <rptOwnerZipCode>35444</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>Chief Commercial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-05-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2730</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>26.45</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20513</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents the withholding of shares for tax purposes.</footnote>
        <footnote id="F2">Includes 13,947 shares of restricted stock granted to the reporting person on April 20, 2016 under the Warrior Met Coal, Inc. 2016 Equity Incentive Plan, which vest in equal installments on April 20, 2019, April 20, 2020 and April 20, 2021.</footnote>
    </footnotes>

    <remarks>Amended to reflect correct number of shares withheld for tax purposes.</remarks>

    <ownerSignature>
        <signatureName>/s/ Dale W. Boyles, by power of attorney</signatureName>
        <signatureDate>2018-05-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
