
	Mr. Mark T. Greenquist has been Chief Financial Officer of Sonus Networks, Inc. since November 01, 2013 and as its Principal Accounting Officer since December 5, 2013. Mr. Greenquist served as the Chief Financial Officer at Siemens Enterprise Communications Limited (recently rebranded to Unify) since May 9, 2013. Mr. Greenquist served as Chief Financial Officer of Siemens Enterprise Communications GmbH &amp; Co. KG. He joined Siemens Enterprise Communications in May 2013. He served as the President and Chief Executive Officer of Telcordia Technologies, Inc. since May 2, 2007. He served as Senior Vice President and Chief Financial Officer of Telcordia Technologies, Inc. since July 31, 2005 to 2007 and served as its Chief Operating Officer. He served as Chief Financial Officer and Senior Vice President, finance of Symbol Technologies Inc. since February, 11 2003 and served as its Interim Chief Accounting Officer since March 2003. He served as Executive Vice President and Chief Financial Officer of Agere Systems Inc., responsible for executive management and the oversight of its financial operations, from January 2001 to February 2003 and served as its Principal Accounting Officer until February 2003. Prior to joining Agere Systems Inc., Mr. Greenquist served as Vice President of finance and Chief Financial Officer of General Motors Europe from January 1999 to January 2001. From October 1998 to January 1999, he served as Vice President and Corporate Treasurer of Delta Air Lines Inc. Prior to joining Delta Air Lines, Mr. Greenquist was at Motors Liquidation Company (formerly, General Motors) from 1986 to 1998 where he held a variety of positions, including Assistant Treasurer of General Motors, Managing Director and Finance Director of General Motors Poland and Corporate Treasurer and Manager of Commercial Finance of Saab Automobile AB. After joining the General Motors finance organization in New York in 1986, Mr. Greenquist subsequently held positions in GM&#39;s New York treasurer&#39;s office including corporate finance, capital markets, foreign exchange and commodity hedging and investor relations. He also has a broad range of experience with GM&#39;s European operations as Treasurer of Saab Automobile and Chief Financial Officer and Managing Director of GM Poland. He was a Treasurer of Saab AB. He has been Member of advisory board at Telcordia Technologies Inc. since August 21, 2013. He serves as a Director of Delta Air Lines Inc. He served as Director of Motors Liquidation Company and Telcordia Technologies Inc. Mr. Greenquist earned a Bachelor&#39;s Degree in Economics from Dartmouth College and a Master&#39;s Degree in Business Administration with concentration in Finance from Columbia University Graduate School of Business.
