X0306 4 2014-12-17 0 0000792977 AMAG PHARMACEUTICALS INC. AMAG 0001214939 HEIDEN WILLIAM K 1100 WINTER STREET WALTHAM MA 02451 1 1 0 0 President and CEO Common Stock 2014-12-17 4 F 0 9890 40.49 D 199448 D This amount represents shares withheld to satisfy the reporting person's tax obligations for portions of restricted stock unit awards that were scheduled to vest as follows: 3,600 shares on February 28, 2014 and 25,000 shares on May 14, 2014. However, due to the black out policies implemented by AMAG Pharmaceuticals, Inc. and certain tax laws, the shares underlying such restricted stock unit awards were not delivered to the reporting person until December 17, 2014, at which time an aggregate of 9,890 shares were withheld from the above referenced awards to satisfy the reporting person's tax obligations. Nancy R. Smith, attorney-in-fact 2014-12-17