<SEC-DOCUMENT>0001104659-20-114090-index.html : 20201013 <SEC-HEADER>0001104659-20-114090.hdr.sgml : 20201013 <ACCEPTANCE-DATETIME>20201013060840 ACCESSION NUMBER: 0001104659-20-114090 CONFORMED SUBMISSION TYPE: SC 13D PUBLIC DOCUMENT COUNT: 2 FILED AS OF DATE: 20201013 DATE AS OF CHANGE: 20201013 GROUP MEMBERS: ALEC N. LITOWITZ GROUP MEMBERS: MAGNETAR CAPITAL PARTNERS LP GROUP MEMBERS: SUPERNOVA MANAGEMENT LLC 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 13D SEC ACT: 1934 Act SEC FILE NUMBER: 005-38286 FILM NUMBER: 201234415 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: Magnetar Financial LLC CENTRAL INDEX KEY: 0001352851 IRS NUMBER: 043818748 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13D BUSINESS ADDRESS: STREET 1: 1603 ORRINGTON AVE. STREET 2: 13TH FLOOR CITY: EVANSTON STATE: IL ZIP: 60201 BUSINESS PHONE: (847)905-4400 MAIL ADDRESS: STREET 1: 1603 ORRINGTON AVE. STREET 2: 13TH FLOOR CITY: EVANSTON STATE: IL ZIP: 60201 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13D <SEQUENCE>1 <FILENAME>a20-32907_1sc13d.htm <DESCRIPTION>SC 13D <TEXT> Document 1 - file: a20-32907_1sc13d.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>2 <FILENAME>a20-32907_1ex99d1.htm <DESCRIPTION>EX-99.1 <TEXT> Document 2 - file: a20-32907_1ex99d1.htm
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