Steven Cosler Biography and Net Worth

Steve Cosler has served as a member of Guardian’s board of directors since September 2024. Mr. Cosler has served as an Operating Partner at Water Street Healthcare Partners, (“Water Street”), an investment firm dedicated to building market leaders in healthcare, since 2006. Prior to Water Street, he served as the President and Chief Executive Officer of Priority, a Fortune 1000 company that distributed and managed biopharmaceutical therapies. At Priority, Mr. Cosler lead the company’s successful initial public offering, as well as strategic initiatives that contributed to its growth and ultimate sale to Express Scripts, Inc. Mr. Cosler serves on the board of directors of Imagine360, LLC, Liviniti, LLC and Eversana Life Science Services LLC, all of which are Water Street portfolio companies, as well as MedShorts LLC. Mr. Cosler also serves as a director and the Chairman of NNN REIT, Inc. (f/k/a National Retail Properties, Inc.). Previously, Mr. Cosler served on the board of directors of Cima Labs Inc. and Priority, and served as the lead independent director at Catamaran Corporation, both of which are former public companies. Mr. Cosler has also served on the Board of Trustees for two closed-end funds of Claymore Securities Inc. Mr. Cosler received a M.S., Industrial Management from the Krannert School of Management at Purdue University.