<SEC-DOCUMENT>0001140361-16-075240.txt : 20160808
<SEC-HEADER>0001140361-16-075240.hdr.sgml : 20160808
<ACCEPTANCE-DATETIME>20160808171235
ACCESSION NUMBER:		0001140361-16-075240
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20160804
FILED AS OF DATE:		20160808
DATE AS OF CHANGE:		20160808

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PLP MM LLC
		CENTRAL INDEX KEY:			0001593893
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		161815132

	BUSINESS ADDRESS:	
		STREET 1:		110 GREENE STREET
		STREET 2:		SUITE 604
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012
		BUSINESS PHONE:		212-554-0680

	MAIL ADDRESS:	
		STREET 1:		110 GREENE STREET
		STREET 2:		SUITE 604
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Lennon Jonathan
		CENTRAL INDEX KEY:			0001593897

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		161815133

	MAIL ADDRESS:	
		STREET 1:		C/O PLEASANT LAKE PARTNERS LLC
		STREET 2:		110 GREENE STREET, SUITE 604
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Pleasant Lake Offshore Master Fund L.P.
		CENTRAL INDEX KEY:			0001593896
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		161815134

	BUSINESS ADDRESS:	
		STREET 1:		110 GREENE STREET
		STREET 2:		SUITE 604
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012
		BUSINESS PHONE:		212-554-0680

	MAIL ADDRESS:	
		STREET 1:		110 GREENE STREET
		STREET 2:		SUITE 604
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Pleasant Lake Onshore GP LLC
		CENTRAL INDEX KEY:			0001593895
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		161815135

	BUSINESS ADDRESS:	
		STREET 1:		110 GREENE STREET
		STREET 2:		SUITE 604
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012
		BUSINESS PHONE:		212-554-0680

	MAIL ADDRESS:	
		STREET 1:		110 GREENE STREET
		STREET 2:		SUITE 604
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Pleasant Lake Partners LLC
		CENTRAL INDEX KEY:			0001580144
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		161815136

	BUSINESS ADDRESS:	
		STREET 1:		110 GREENE STREET
		STREET 2:		SUITE 604
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012
		BUSINESS PHONE:		212-554-0680

	MAIL ADDRESS:	
		STREET 1:		110 GREENE STREET
		STREET 2:		SUITE 604
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2016-08-04</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001580144</rptOwnerCik>
            <rptOwnerName>Pleasant Lake Partners LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>110 GREENE STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 604</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10012</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001593895</rptOwnerCik>
            <rptOwnerName>Pleasant Lake Onshore GP LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>110 GREENE STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 604</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10012</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001593896</rptOwnerCik>
            <rptOwnerName>Pleasant Lake Offshore Master Fund L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>110 GREENE STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 604</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10012</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001593897</rptOwnerCik>
            <rptOwnerName>Lennon Jonathan</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PLEASANT LAKE PARTNERS LLC</rptOwnerStreet1>
            <rptOwnerStreet2>110 GREENE STREET, SUITE 604</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10012</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001593893</rptOwnerCik>
            <rptOwnerName>PLP MM LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>110 GREENE STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 604</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10012</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2016-08-04</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>58000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>7.4922</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3472515</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents the weighted average purchase price of shares purchased in a series of open market sales on the transaction date at prices ranging from $7.12 to $8.00 per share. The Reporting Persons undertake to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each price.</footnote>
        <footnote id="F2">Shares reported herein represent shares held for the account of Pleasant Lake Offshore Master Fund L.P. (the &quot;Master Fund&quot;). Pleasant Lake Partners LLC (&quot;PLP&quot;) serves as the investment manager of the Master Fund. Pleasant Lake Onshore GP LLC (&quot;GP LLC&quot;) serves as General Partner of the Master Fund. PLP MM LLC is the managing member of PLP. Jonathan Lennon serves as manager of PLP MM LLC and GP LLC. Each of the Reporting Persons disclaims beneficial ownership of the shares reported herein except to the extent of its or his pecuniary interest therein, and the filing of this Form 4 shall not be construed as an admission that any of the Reporting Persons is the beneficial owner of any such shares for purposes of Section 16(a) of the Securities Exchange Act of 1934 or for any other purpose.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ PLEASANT LAKE PARTNERS LLC By: PLP MM LLC, its Managing Member By: Jonathan Lennon, Manager</signatureName>
        <signatureDate>2016-08-08</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ PLP MM LLC By: Jonathan Lennon, Manager</signatureName>
        <signatureDate>2016-08-08</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ PLEASANT LAKE ONSHORE GP LLC By: Jonathan Lennon, Manager</signatureName>
        <signatureDate>2016-08-08</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ PLEASANT LAKE OFFSHORE MASTER FUND L.P. By: Pleasant Lake Onshore GP LLC, its General Partner By: Jonathan Lennon, Manager</signatureName>
        <signatureDate>2016-08-08</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ JONATHAN LENNON</signatureName>
        <signatureDate>2016-08-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
