0001367644 2021-04-29 2021-04-29 0001367644 2020-01-13 2020-01-13 0001367644 false 8-K 2021-04-29 2021-04-29 EMERGENT BIOSOLUTIONS INC. DE 001-33137 14-1902018 400 Professional Drive Suite 400 Gaithersburg MD 20879 240 631-3200 false false false false Common Stock, Par Value $0.001 per share EBS NYSE false