X0303 4 2011-05-19 0 0001367644 Emergent BioSolutions Inc. EBS 0001493324 White Marvin L 2273 RESEARCH BLVD SUITE 400 ROCKVILLE MD 20850 1 0 0 0 Common Stock 2011-05-19 4 A 0 3600 0 A 9000 D Director Stock Option (right to buy) 22.02 2011-05-19 4 A 0 7200 0 A 2021-05-18 Common Stock 7200 7200 D Consists of restricted stock units granted under the 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. 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 installments on May 19, 2012, May 19, 2013 and May 19, 2014 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/R. Don Elsey, attorney-in-fact 2011-05-23