<SEC-DOCUMENT>0001193125-17-030898-index.html : 20170203
<SEC-HEADER>0001193125-17-030898.hdr.sgml : 20170203
<ACCEPTANCE-DATETIME>20170203172302
ACCESSION NUMBER:		0001193125-17-030898
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170203
DATE AS OF CHANGE:		20170203
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/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-88920
		FILM NUMBER:		17573172

	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/A

	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/A
<SEQUENCE>1
<FILENAME>d256283dsc13ga.htm
<DESCRIPTION>SC 13G/A
<TEXT>
Document 1 - file: d256283dsc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>