Thomas Weisel Partners LLC

Leadership & Staff

J Patrick O'Shaughnessy

• partner ('04→'06)

Board Members

Thomas W Weisel Senior Managing Director and Director of Stifel Financial Corp; previously Chairman and CEO of Thomas Weisel Partners

• Chairman and CEO

Holdings

Arbor Networks network security company

• Owner ('02→?)

Parents

Thomas Weisel Capital Management, LLC private equity and venture capital arm of Thomas Weisel Partners Group, Inc..

• Arm ('99→?)