X0306 4 2013-05-23 0 0001367644 Emergent BioSolutions Inc. EBS 0001403769 Bailey Sue 2273 RESEARCH BLVD ROCKVILLE MD 20850 1 0 0 0 Common Stock 2013-05-23 4 A 0 3600 0 A 14400 D Director stock option (right to buy) 14.25 2013-05-23 4 A 0 7200 0 A 2020-05-22 Common Stock 7200 7200 D Consists of restricted stock units granted under the Second Amended and Restated Emergent BioSolutions Inc. 2006 Stock Incentive Plan. These restricted stock units vest in three equal annual installments beginning on the first anniversary of the date of grant, assuming continued service with the company or, if the Company's Annual Meeting of Stockholders occurs prior to such date for any year, on the day prior to such year's Annual Meeting of Stockholders. 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. The option will vest in three equal annual installments beginning on the first anniversary of the date of grant, assuming continued service with the company or, if the Company's Annual Meeting of Stockholders occurs prior to such date for any year, on the day prior to such year's Annual Meeting of Stockholders. /s/Michael R. Darling, attorney-in-fact 2013-05-24