On January 15, 2023, in connection with the separation of employment of Mr. Schroeder, the Board of Directors appointed J. Christopher Naftzger as Interim Chief Executive Officer, effective immediately. J. Christopher Naftzger, age 56, has served as the Company's general counsel and secretary since September 1, 2021. Previously, Mr. Naftzger served as General Counsel and Corporate Secretary of Krystal Biotech, an emerging-stage, gene therapy company, from February 2020 to May 2021.

Before joining Krystal, he was Vice President, Deputy General Counsel and Assistant Secretary of Nabriva Therapeutics from January 2017 to January 2020. Prior to Nabriva, Mr. Naftzger served as Vice President, General Counsel, Chief Compliance Officer, and Secretary of Unilife Medical Solutions, a developer and manufacturer of innovative drug delivery systems. Mr. Naftzger also held senior in-house counsel positions with Chesapeake Corporation and Koch Industries, and was a corporate partner with Blank Rome LLP in Washington, DC. Mr. Naftzger obtained his undergraduate degree from Hampden-Sydney College and his law degree from the Willamette University College of Law.