0001367644 2019-07-30 2019-07-30 false 0001367644 8-K 2019-07-30 EMERGENT BIOSOLUTIONS INC. DE 001-33137 14-1902018 400 Professional Drive Suite 400 Gaithersburg MD 20879 240 631-3200 false false false false false Common Stock, Par Value $0.001 per share EBS NYSE