Mr. Croarkin has served as a director of our company since February 2016. From 2007 to 2010, Mr. Croarkin was the Senior Vice President, Chief Financial Officer, and Corporate Strategy Officer of Alcon, Inc., a public ophthalmic pharmaceutical and medical device company. From 2011 through early 2013, Mr. Croarkin served as the Chief Financial Officer of Nestlé Health Science, S.A., a division of Nestlé focused on medicalized nutrition solutions for chronic medical conditions. Mr. Croarkin retired in early 2013. Mr. Croarkin currently serves on the board of directors and audit committee of Aerie Pharmaceuticals, Inc., a public clinical stage pharmaceutical company. 

 Mr. Croarkin also occasionally serves as a panelist on the NASDAQ Listing Qualifications Panel, a panel that adjudicates appeals by companies that have received notification of delisting by the NASDAQ. In 2008 and 2009, Mr. Croarkin served as a director on the supervisory board of the German publicly traded company, Wave Light, A.G., which manufactures and globally markets laser and diagnostic systems for refractive eye surgery. Mr. Croarkin received his B.A. in economics from Georgetown University and his M.B.A. degree in finance from the University of Connecticut.