<SEC-DOCUMENT>0001654954-21-001681-index.html : 20210216 <SEC-HEADER>0001654954-21-001681.hdr.sgml : 20210216 <ACCEPTANCE-DATETIME>20210216082709 ACCESSION NUMBER: 0001654954-21-001681 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 2 FILED AS OF DATE: 20210216 DATE AS OF CHANGE: 20210216 SUBJECT COMPANY: 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 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-38286 FILM NUMBER: 21632784 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 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: Camber Capital Management LP CENTRAL INDEX KEY: 0001444043 IRS NUMBER: 421693587 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A 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 COMPANY: FORMER CONFORMED NAME: Camber Capital Management LLC DATE OF NAME CHANGE: 20080827 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>1 <FILENAME>camberamag-202013ga.htm <DESCRIPTION>PRIMARY DOCUMENT <TEXT> Document 1 - file: camberamag-202013ga.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-1 <SEQUENCE>2 <FILENAME>amag13ga2020ex1.htm <DESCRIPTION>JOINT FILING AGREEMENT <TEXT> Document 2 - file: amag13ga2020ex1.htm
</DOCUMENT> </SEC-DOCUMENT>