Mr. Grinstein has more than fifteen years of executive and board experience spanning across the telecommunications, the Internet, and venture capital industries. He currently serves as chairman of Coinstar Inc. (NASDAQ: CSTR) and as a member of the board directors and audit committees of F5 Networks (NASDAQ: FFIV), Labor Ready (NYSE: LRW), and Nextera (NASDAQ: NXRA). Mr. Grinstein is a partner of Second Avenue Partners, a venture capital firm which is focused on emerging Internet businesses. He has held a number of senior executive positions, serving previously as Nextel International Inc.’s president and chief executive officer and prior to that president and chief executive officer of the Aviation Communications Division of AT&T Wireless (formerly McCaw Cellular Communications). A successful venture capitalist, Mr. Grinstein was a seed-capital investor in Amazon.com (NASDAQ: AMZN). He is a founding partner of Second Avenue Partners, a VC group funding Pacific Northwest early-stage companies. In addition, he has been a driving force behind structuring a number of leading companies including Pathogenesis, VaxGen (VXGN: PK), Tegic, HouseValues (NASDAQ: SOLD), Wireless Services, Nordstrom.com of Nordstrom Inc. (NYSE: JWN), Superconductor Collider Corporation, Neah Power (NPWS: PK), Insitu, and Ice Energy. Mr. Grinstein holds a B.A. in education from Yale University and a J.D. magna cum laude from Georgetown University Law Center.