Mr. Pfeiffer is a successful biopharmaceutical executive with more than 25 years of experience as a senior executive at both large and small life science companies. Prior to joining Ralexar Therapeutics, he served as a Board Member and Chief Commercial Officer of Ellman International, a private equity-backed surgical device and aesthetics company focused on the dermatology market. He also served as Chief Commercial Officer of NB Therapeutics, a dermatology drug development company, and Senior Vice President, Sales and Marketing of CollaGenex Pharmaceuticals, a dermatology company sold to Galderma in 2008. He also had sales and marketing roles of increasing responsibility at SmithKline Beecham, Zeneca Pharmaceuticals, and Lederle Laboratories. Mr. Pfeiffer was also a member of the Board of Directors a CD Diagnostics, a diagnostic company with an initial focus on orthopedic procedures. He received his B.S. from Rutgers University and his MBA from the J.L. Kellogg Graduate School of Management at Northwestern University.