Ronald J. de Lange

Ronald de Lange joined us in July 2015 and was appointed Chairman of the Board effective April 1, 2016. From 2005 through 2013, Mr. de Lange was President and CEO of Tekelec, a leading global networking software company focused on enabling people and devices globally to talk, text, and access the internet. Mr. de Lange successfully led the sale of Tekelec to Siris Capital and the strategic acquisition by Oracle in March 2013. From March 2013 through December 2013 he served as Senior Vice President at Oracle, assisting in the integration of Tekelec into Oracle. Prior to becoming President and CEO of Tekelec, he served as Executive Vice President of Tekelec's Global Product Solutions group and held a variety of key management positions at Lucent Technologies. On September 14, 2016, Mr. de Lange became a director of Xura, Inc., a global provider of digital services solutions. On February 27, 2017, Xura, Inc. acquired Mitel Mobility and re-named the combined company Mavenir Systems, Inc. for which Mr. de Lange now serves as a director of the combined companies. Since 2014, Mr. de Lange has been a professional investor engaged in investing in early stage technology companies and managing other business interests. Mr. de Lange holds an MS in computer science from DePaul University and a BS in electronics engineering technology from DeVry , Institute of Technology.