X0306 4 2019-03-19 0 0001367644 Emergent BioSolutions Inc. EBS 0001536639 Mulligan Seamus 400 PROFESSIONAL DRIVE, SUITE 400 GAITHERSBURG MD 20879 1 0 0 0 Common Stock 2019-03-19 4 A 0 7569 0 A 56141 D Common Stock 545590 I By Nerano Pharma Ltd 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. Mr. Mulligan and his family, collectively hold an aggregate 100% equity interest in Nerano Pharma Ltd, which in turn is the direct owner of 545,590 shares of the Issuer's common stock. /s/ S. Scott Lieberman, Attorney-in-fact 2019-03-21