INVESTORS

Dr. Bill Leighton has over 25 years of telecommunications senior management experience spanning research, engineering and business unit management. Dr. Leighton worked at AT&T in a variety of roles over the last 28 years, most recently as Vice President of Research at AT&T Labs where he led the team responsible for AT&T's core and directed research program. Prior to that, he was the Vice President of Technology and Services Strategy at AT&T Labs and ran AT&T's Security Services business unit. Dr. Leighton holds an MSE and PhD in Electrical Engineering from Princeton University. He also completed an Advanced Management Program at Harvard Business School.

Mr. Stuart joined Avici Systems in September 2006 with a two-decade record of achievement and broad-based financial experience in the telecommunications equipment and software industries. Prior to that, Mr. Stuart served as a general partner at Still River Funds, a venture capital organization focused on investments in the information technology, communications and life sciences industries. Mr. Stuart had previously held the position of vice president of business development for ADC Telecommunications. Prior to that Mr. Stuart held CFO and VP level positions at NetCore Systems, Telco Systems, AccessLine Technologies and AT&T Paradyne. Mr. Stuart received an MBA from Northeastern University and a BA from Boston College.

Mr. Ramesh joined Avici Systems in April 2003 and brings 15 years of financial management and accounting experience. Mr. Ramesh is responsible for the company's financial operations, financial planning and analysis and reporting. Mr. Ramesh previously held senior financial management and accounting positions at Sycamore Networks, InteQ Corporation and Wang Global. Previously he was a member of the audit practice with PricewaterhouseCoopers LLP where he earned his CPA license. Mr. Ramesh is a graduate of Loyola College, Madras, India, and holds an MS Accounting from the University of Rhode Island.

Mr. Cayer has joined Soapstone Networks as Vice President, General Counsel and Secretary. His has previously served as General Counsel at BladeLogic, where he helped lead the Company through the IPO process and eventually through an acquisition by BMC Software. Prior to BladeLogic, Mr. Cayer was general counsel at several public and private companies including Saville Systems PLC, Curaspan Inc., and Trellix Corp., and associate general counsel at Thermo Electron. He began his legal career as an associate at Testa, Hurwitz & Thibeault in Boston. Mr. Cayer holds a B.A. degree from Harvard University and his J.D. from Boston College Law School.