<SEC-DOCUMENT>0000899243-19-000271.txt : 20190103
<SEC-HEADER>0000899243-19-000271.hdr.sgml : 20190103
<ACCEPTANCE-DATETIME>20190103160551
ACCESSION NUMBER:		0000899243-19-000271
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20181231
FILED AS OF DATE:		20190103
DATE AS OF CHANGE:		20190103

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kim Young-Joon
		CENTRAL INDEX KEY:			0001576117

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		19505387

	MAIL ADDRESS:	
		STREET 1:		C/O MAGNACHIP SEMICONDUCTOR CORPORATION
		STREET 2:		20400 STEVENS CREEK BOULEVARD, SUITE 370
		CITY:			CUPERTINO
		STATE:			CA
		ZIP:			95014

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MAGNACHIP SEMICONDUCTOR Corp
		CENTRAL INDEX KEY:			0001325702
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				830406195
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		C/O MAGNACHIP SEMICONDUCTOR S.A.
		STREET 2:		74, RUE DE MERL
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2146
		BUSINESS PHONE:		(352) 45-62-62

	MAIL ADDRESS:	
		STREET 1:		C/O MAGNACHIP SEMICONDUCTOR S.A.
		STREET 2:		74, RUE DE MERL
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2146

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MAGNACHIP SEMICONDUCTOR LLC
		DATE OF NAME CHANGE:	20110304

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MAGNACHIP SEMICONDUCTOR Corp
		DATE OF NAME CHANGE:	20110303

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MAGNACHIP SEMICONDUCTOR LLC
		DATE OF NAME CHANGE:	20100701
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-12-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001325702</issuerCik>
        <issuerName>MAGNACHIP SEMICONDUCTOR Corp</issuerName>
        <issuerTradingSymbol>MX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001576117</rptOwnerCik>
            <rptOwnerName>Kim Young-Joon</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>60 SOUTH MARKET STREET, SUITE 750</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95113</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>See Remarks</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-12-31</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5735</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>6.21</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>154914</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This transaction represents the withholding by the Issuer of 5,735 shares of common stock to satisfy tax withholding obligations incurred by the Reporting Person upon the vesting of 15,500 shares of common stock originally awarded to the Reporting Person on April 30, 2018.</footnote>
    </footnotes>

    <remarks>Director and Chief Executive Officer</remarks>

    <ownerSignature>
        <signatureName>/s/ Theodore Kim, Attorney-in-Fact</signatureName>
        <signatureDate>2019-01-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
