<SEC-DOCUMENT>0001306923-21-000013-index.html : 20210216 <SEC-HEADER>0001306923-21-000013.hdr.sgml : 20210216 <ACCEPTANCE-DATETIME>20210216162439 ACCESSION NUMBER: 0001306923-21-000013 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: 21639005 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: Palo Alto Investors LP CENTRAL INDEX KEY: 0001306923 IRS NUMBER: 770558164 STATE OF INCORPORATION: CA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 470 UNIVERSITY AVE CITY: PALO ALTO STATE: CA ZIP: 94301 BUSINESS PHONE: 650-325-0772 MAIL ADDRESS: STREET 1: 470 UNIVERSITY AVE CITY: PALO ALTO STATE: CA ZIP: 94301 FORMER COMPANY: FORMER CONFORMED NAME: Palo Alto Investors, LLC DATE OF NAME CHANGE: 20041025 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>1 <FILENAME>AMAG_13G_A12.txt <TEXT> Document 1 - file: AMAG_13G_A12.txt
</DOCUMENT> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>2 <FILENAME>AMAG_13G_A12.pdf <TEXT> Document 2 - file: AMAG_13G_A12.pdf
</DOCUMENT> </SEC-DOCUMENT>