X0306 4 2018-05-08 0 0001367644 Emergent BioSolutions Inc. EBS 0001196632 LINDAHL RICHARD S 400 PROFESSIONAL DRIVE, SUITE 400 GAITHERSBURG MD 20879 0 1 0 0 EVP, Chief Financial Officer Common Stock 2018-05-08 4 A 0 4992 0.00 A 4992 D Common Stock 2018-05-08 4 A 0 1551 0.00 A 6543 D Common Stock 2018-05-08 4 A 0 4991 0.00 A 11534 D Employee Stock Option (Right to Buy) 48.33 2018-05-08 4 A 0 19963 48.33 A 2025-05-07 Common Stock 19963 19963 D Consists of restricted stock units granted under the Amended and Restated Emergent BioSolutions Inc. 2006 Stock Incentive Plan, as amended. These restricted stock units vest in three equal annual installments beginning on the day prior to the first anniversary of the date of grant, assuming continued service with the company. Each restricted stock unit represents the right of the Reporting Person to receive one share of common stock of Emergent BioSolutions Inc., subject to adjustment as provided in the grant agreement. Consists of performance stock units granted under the Amended and Restated 2006 Emergent BioSolutions Inc. Stock Incentive Plan, as amended. Each PSU represents a right to receive one share of common stock. The PSUs vest upon achievement with respect to net income as a percentage of total revenue for the 2020 fiscal year, each as determined in accordance with GAAP, as certified by the Compensation Committee following the performance period. Vests in three equal installments on May 7, 2019, May 7, 2020 and May 7, 2021. /s/ S. Scott Lieberman, Attorney-in-fact 2018-05-10