0001367644 2019-11-06 2019-11-06 false 0001367644 8-K 2019-11-06 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