Don Listwin

Don Listwin

Lead Independent Director

Mr. Listwin has served as lead independent director since July 2021. He previously served as chairman of our Board from July 2007 to July 2021, and brings over 40 years of experience in the networking industry to our Board. Mr. Listwin currently serves as the chief executive officer of ZEVX, a privately-held company that builds and designs battery electric powertrain and power system products that quickly migrate commercial vehicle fleets to zero carbon. Prior to his current role, from 2018 to 2021 Mr. Listwin served as chief executive officer of RapidAI, a privately-held medical device company. Mr. Listwin owns and operates Listwin Ventures, a privately-held investment firm.

Mr. Listwin founded in 2016, a non-profit organization focused on helping children in Belize, and Canary Foundation in 2004, a non-profit organization devoted to the early detection of cancer, and has served on the board of directors of both organizations since their inception. From January 2008 to January 2009, Mr. Listwin served as chief executive officer of Sana Security, Inc., a security software company, which was acquired by AVG Technologies. From September 2000 to October 2004, Mr. Listwin served as chief executive officer of Openwave Systems Inc., a leader in mobile internet infrastructure software. From August 1990 to September 2000, he served in various capacities at Cisco Systems, Inc., most recently as executive vice president. Mr. Listwin formerly served on the board of directors of Violin Memory, Inc., Isilon Systems, Inc., Openwave Systems Inc. (now known as Unwired Planet, Inc.), TIBCO Software Inc., Redback Networks, Inc. and E-Tek Dynamics Inc., each a publicly-held company. Mr. Listwin also previously served as a member of the board of scientific advisors of the National Cancer Institute.

Mr. Listwin holds an honorary Doctorate of Law from the University of Saskatchewan and a Bachelor of Science in Electrical Engineering from the University of Saskatchewan.