<SEC-DOCUMENT>0001140361-16-050637-index.html : 20160208
<SEC-HEADER>0001140361-16-050637.hdr.sgml : 20160208
<ACCEPTANCE-DATETIME>20160208165417
ACCESSION NUMBER:		0001140361-16-050637
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20160208
DATE AS OF CHANGE:		20160208
GROUP MEMBERS:		ACP-LANTERN CO-INVEST, LLC
GROUP MEMBERS:		AVISTA CAPITAL PARTNERS (OFFSHORE), L.P.
GROUP MEMBERS:		AVISTA CAPITAL PARTNERS, L.P.

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Lantheus Holdings, Inc.
		CENTRAL INDEX KEY:			0001521036
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		IRS NUMBER:				352318913
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-88920
		FILM NUMBER:		161396204

	BUSINESS ADDRESS:	
		STREET 1:		331 TREBLE COVE ROAD
		CITY:			NORTH BILLERICA
		STATE:			MA
		ZIP:			01862
		BUSINESS PHONE:		978 671-8001

	MAIL ADDRESS:	
		STREET 1:		331 TREBLE COVE ROAD
		CITY:			NORTH BILLERICA
		STATE:			MA
		ZIP:			01862

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Lantheus MI Holdings, Inc.
		DATE OF NAME CHANGE:	20110517

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Avista Capital Partners GP, LLC
		CENTRAL INDEX KEY:			0001374781
		IRS NUMBER:				204773707
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		65 EAST 55TH STREET
		STREET 2:		18TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212 593-6900

	MAIL ADDRESS:	
		STREET 1:		65 EAST 55TH STREET
		STREET 2:		18TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>formsc13g.htm
<DESCRIPTION>AVISTA CAPITAL PARTNERS GP, LLC SC 13G 12-31-2015 (LANTHEUS HOLDINGS, INC)
<TEXT>
Document 1 - file: formsc13g.htm

</DOCUMENT>
</SEC-DOCUMENT>