William P. Noglows has served on our Board of Directors since our initial public offering in June 2014 and as chairperson of our Board since February 2019, and previously served on our Board of Directors from January 2011 to April 2013. Mr. Noglows served as Chairperson of the Board of CMC Materials, Inc. (formerly known as Cabot Microelectronics Corporation), a global supplier of consumable materials primarily to semiconductor manufacturers, from November 2003 to July 2022 and as President and Chief Executive Officer from November 2003 until December 2014, as well as previously serving as a director from December 1999 until April 2002. Mr. Noglows currently serves on the boards of Littelfuse, Inc. and NuMat Technologies, Inc. From 1984 through 2003, Mr. Noglows served in various management positions at Cabot Corporation, a global specialty chemicals and performance materials company, culminating in serving as an executive vice president and general manager. Mr. Noglows holds a BS in Chemical Engineering from Georgia Institute of Technology. The Board has concluded that Mr. Noglows possesses specific attributes that qualify him to serve as a member and chairperson of our Board of Directors, including his experience as chief executive officer of a leading public company and his expertise in developing technology. In addition, because Mr. Noglows has served on boards of directors of two other public companies, the Board has concluded that he has significant experience regarding how boards can and should effectively oversee and manage companies, and a significant understanding of governance issues.