Thomas Weisel Partners Group, Inc. Adds Alternative Energy, Industrial Growth and Clean Technology Banking Team and Names David A. Baylor Chief Financial Officer

Market Wire, February, 2007

Thomas Weisel Partners Group, Inc. (NASDAQ: TWPG), an investment bank focused on the growth sectors of the economy, has announced the hiring of an Alternative Energy, Industrial Growth and Clean Technology banking team. In addition, Thomas Weisel Partners has announced the appointment of David A. Baylor as Chief Financial Officer effective April 2, 2007.

Addition of New Investment Banking Team

Thomas Weisel Partners has announced the hiring of John Book as a Managing Director to lead the firm's Alternative Energy, Industrial Growth and Clean Technology investment banking efforts. Mr. Book and his team of two senior bankers, Robert Kaplan and Chris Gidopoulos, join the firm from First Albany Capital, where they have worked together since 2002. The new team will be based in the firm's New York and Boston offices.

"John and his team bring with them extensive transactional experience with growth-oriented alternative energy companies and we believe they will greatly enhance our banking efforts in the alternative energy, industrial growth and clean technology sectors," said Blake Jorgensen, Co-Director of Investment Banking. "We believe that this team's deep industry knowledge and strong client relationships will enhance our position as a trusted advisor to leading growth companies. We look forward to their contributions and are pleased to be expanding our firm's alternative energy efforts," said Bob Kitts, Co-Director of Investment Banking.

Appointment of New Chief Financial Officer

Thomas Weisel Partners Group has also announced the appointment of David A. Baylor as Chief Financial Officer effective April 2, 2007. Mr. Baylor, who currently serves as the firm's Chief Administrative Officer, will succeed the firm's current CFO who reports to Mr. Baylor. Mr. Baylor was one of the founding partners of Thomas Weisel Partners in October 1998.

About Thomas Weisel Partners Group, Inc.

Thomas Weisel Partners Group, Inc. is an investment bank, founded in 1998, focused principally on the growth sectors of the economy. Thomas Weisel Partners Group, Inc. generates revenues from three principal sources: investment banking, brokerage and asset management. The investment banking group is comprised of two disciplines: corporate finance and strategic advisory. The brokerage group provides equity and convertible debt securities sales and trading services to institutional investors, and offers brokerage, advisory and cash management services to high-net-worth individuals and corporate clients. The asset management group consists of: private equity, public equity and distribution management. Thomas Weisel Partners is headquartered in San Francisco, California with additional offices in New York City, Boston, Silicon Valley, Portland, Oregon and Mumbai, India.

Media Contact: Amanda Gaines-Cooke 415-364-2638