<SEC-DOCUMENT>0001104659-22-129616-index.html : 20221222
<SEC-HEADER>0001104659-22-129616.hdr.sgml : 20221222
<ACCEPTANCE-DATETIME>20221222174557
ACCESSION NUMBER:		0001104659-22-129616
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20221214
FILED AS OF DATE:		20221222
DATE AS OF CHANGE:		20221222

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Olafsson Sigurdur O
		CENTRAL INDEX KEY:			0001499481

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35803
		FILM NUMBER:		221482953

	MAIL ADDRESS:	
		STREET 1:		360 MOUNT KEMBLE AVENUE
		CITY:			MORRISTOWN
		STATE:			NJ
		ZIP:			07960

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mallinckrodt plc
		CENTRAL INDEX KEY:			0001567892
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				981088325
		FISCAL YEAR END:			1230

	BUSINESS ADDRESS:	
		STREET 1:		COLLEGE BUSINESS & TECHNOLOGY PARK
		STREET 2:		CRUISERATH, BLANCHARDSTOWN
		CITY:			DUBLIN 15
		STATE:			L2
		ZIP:			D15
		BUSINESS PHONE:		353 1 6960000

	MAIL ADDRESS:	
		STREET 1:		COLLEGE BUSINESS & TECHNOLOGY PARK
		STREET 2:		CRUISERATH, BLANCHARDSTOWN
		CITY:			DUBLIN 15
		STATE:			L2
		ZIP:			D15
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>tm2233304-1_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
Document 1 - file: tm2233304-1_4seq1.html

Document 1 - RAW XML: tm2233304-1_4seq1.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>tm2233304d1_ex24.htm
<DESCRIPTION>EXHIBIT 24
<TEXT>
Document 2 - file: tm2233304d1_ex24.htm

</DOCUMENT>
</SEC-DOCUMENT>