<SEC-DOCUMENT>0001654954-19-009162-index.html : 20190809
<SEC-HEADER>0001654954-19-009162.hdr.sgml : 20190809
<ACCEPTANCE-DATETIME>20190809154120
ACCESSION NUMBER:		0001654954-19-009162
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190807
FILED AS OF DATE:		20190809
DATE AS OF CHANGE:		20190809

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Camber Capital Management LP
		CENTRAL INDEX KEY:			0001444043
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10865
		FILM NUMBER:		191012831

	BUSINESS ADDRESS:	
		STREET 1:		101 HUNTINGTON AVENUE
		STREET 2:		SUITE 2101
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		617-717-6600

	MAIL ADDRESS:	
		STREET 1:		101 HUNTINGTON AVENUE
		STREET 2:		SUITE 2101
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199

	FORMER NAME:	
		FORMER CONFORMED NAME:	Camber Capital Management LLC
		DATE OF NAME CHANGE:	20080827

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMAG PHARMACEUTICALS, INC.
		CENTRAL INDEX KEY:			0000792977
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				042742593
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1100 WINTER STREET
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
		BUSINESS PHONE:		6174983300

	MAIL ADDRESS:	
		STREET 1:		1100 WINTER STREET
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMAG PHARMACEUTICALS INC.
		DATE OF NAME CHANGE:	20070724

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ADVANCED MAGNETICS INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>section16.xml
<DESCRIPTION>FORM 4
<TEXT>
Document 1 - file: section16.html

Document 1 - RAW XML: section16.xml

</DOCUMENT>
</SEC-DOCUMENT>