William D. Humphries

Mr. Humphries has served as a director of the company since 2012 and as the chairman of the board of directors since February 2018. Mr. Humphries joined Isosceles Pharmaceuticals Inc., a biotechnology company, in May 2021, and serves as its Chief Executive Officer. From August 2018 until December 2020, he served as President and Group Company Chairman, Ortho Dermatologics of Bausch Health Companies Inc., where he previously served as Executive Vice President, Company Group Chairman, Dermatology from January 2017 to August 2018. From 2012 to December 2016, he served as President and Chief Executive Officer of the North American business of Merz, Inc., an affiliate of Merz Pharma Group, a specialty healthcare company. From 2006 to 2012, he served in a number of leadership positions with Stiefel Laboratories, Inc., a dermatology pharmaceutical company, including as its Chief Commercial Officer and then as its President beginning in 2008. Stiefel was acquired by GlaxoSmithKline in 2009. Mr. Humphries currently serves on the boards of directors of Aclaris Therapeutics, Inc., a publicly traded pharmaceutical company, and Strata Skin Sciences, Inc., a publicly traded medical device company. Mr. Humphries received his M.B.A. degree from Pepperdine University and a B.A. degree from Bucknell University. The board of directors believes that Mr. Humphries’ experience as a pharmaceutical company executive provides him with the qualifications and skills to serve as a director of the company.