X0304 4 2012-03-08 0 0001367644 Emergent BioSolutions Inc. EBS 0001380176 Chatfield Steven 2273 RESEARCH BLVD SUITE 400 ROCKVILLE MD 20850 0 1 0 0 EVP and President, BioSciences Common Stock 2012-03-08 4 F 0 1433 14.49 D 10350 D Common Stock 2012-03-13 4 A 0 11000 0 A 22783 D Common Stock 2012-03-14 4 F 0 1009 16.05 D 20341 D Employee Stock Option (Right to buy) 15.83 2012-03-13 4 A 0 22000 0 A 2019-03-14 Common Stock 22000 22000 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. Exercisable in three equal installments on March 12, 2013, March 12, 2014 and March 12, 2015 /s/Jay G. Reilly, attorney-in-fact 2012-03-16