<SEC-DOCUMENT>0000921895-17-000055-index.html : 20170113
<SEC-HEADER>0000921895-17-000055.hdr.sgml : 20170113
<ACCEPTANCE-DATETIME>20170113171905
ACCESSION NUMBER:		0000921895-17-000055
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170111
FILED AS OF DATE:		20170113
DATE AS OF CHANGE:		20170113

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:			Engaged Capital Flagship Fund, Ltd.
		CENTRAL INDEX KEY:			0001619827
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		17528647

	BUSINESS ADDRESS:	
		STREET 1:		610 NEWPORT CENTER DRIVE
		STREET 2:		SUITE 250
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660
		BUSINESS PHONE:		949-734-7900

	MAIL ADDRESS:	
		STREET 1:		610 NEWPORT CENTER DRIVE
		STREET 2:		SUITE 250
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660

	FORMER NAME:	
		FORMER CONFORMED NAME:	Engaged Capital Fund, Ltd.
		DATE OF NAME CHANGE:	20160805

	FORMER NAME:	
		FORMER CONFORMED NAME:	Engaged Capital Flagship Fund, Ltd.
		DATE OF NAME CHANGE:	20160707

	FORMER NAME:	
		FORMER CONFORMED NAME:	Engaged Capital II Offshore, Ltd.
		DATE OF NAME CHANGE:	20140918

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Engaged Capital Flagship Fund, L.P.
		CENTRAL INDEX KEY:			0001559850
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		17528648

	BUSINESS ADDRESS:	
		STREET 1:		610 NEWPORT CENTER DRIVE
		STREET 2:		SUITE 250
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			90272
		BUSINESS PHONE:		949-734-7900

	MAIL ADDRESS:	
		STREET 1:		610 NEWPORT CENTER DRIVE
		STREET 2:		SUITE 250
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			90272

	FORMER NAME:	
		FORMER CONFORMED NAME:	Engaged Capital Fund, LP
		DATE OF NAME CHANGE:	20160805

	FORMER NAME:	
		FORMER CONFORMED NAME:	Engaged Capital Flagship Fund, LP
		DATE OF NAME CHANGE:	20160707

	FORMER NAME:	
		FORMER CONFORMED NAME:	ENGAGED CAPITAL II LP
		DATE OF NAME CHANGE:	20121009

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Engaged Capital Flagship Master Fund, LP
		CENTRAL INDEX KEY:			0001580761

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		17528649

	BUSINESS ADDRESS:	
		STREET 1:		CRICKET SQUARE, HUTCHINS DRIVE
		STREET 2:		P.O. BOX 2681
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			KY1-1111
		BUSINESS PHONE:		(949) 734-7900

	MAIL ADDRESS:	
		STREET 1:		CRICKET SQUARE, HUTCHINS DRIVE
		STREET 2:		P.O. BOX 2681
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			KY1-1111

	FORMER NAME:	
		FORMER CONFORMED NAME:	Engaged Capital Master Feeder II, LP
		DATE OF NAME CHANGE:	20130703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Welling Glenn W.
		CENTRAL INDEX KEY:			0001580771

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		17528651

	MAIL ADDRESS:	
		STREET 1:		610 NEWPORT CENTER DRIVE
		STREET 2:		SUITE 250
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Engaged Capital LLC
		CENTRAL INDEX KEY:			0001559771
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		17528652

	BUSINESS ADDRESS:	
		STREET 1:		610 NEWPORT CENTER DRIVE
		STREET 2:		SUITE 250
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660
		BUSINESS PHONE:		949-734-7900

	MAIL ADDRESS:	
		STREET 1:		610 NEWPORT CENTER DRIVE
		STREET 2:		SUITE 250
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Engaged Capital Holdings, LLC
		CENTRAL INDEX KEY:			0001580769

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34791
		FILM NUMBER:		17528650

	BUSINESS ADDRESS:	
		STREET 1:		610 NEWPORT CENTER DRIVE
		STREET 2:		SUITE 250
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660
		BUSINESS PHONE:		(949) 734-7900

	MAIL ADDRESS:	
		STREET 1:		610 NEWPORT CENTER DRIVE
		STREET 2:		SUITE 250
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660
</SEC-HEADER>
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