The chief financial officer of investment bank Thomas Weisel Partners has resigned just one year after the group floated in the US to "pursue other interests". The company said it would continue to pay him benefits until he finds another job.

Robert West will leave Thomas Weisel on April 2. He agreed to stay with the firm's board through the filing of the company's financial statements and the filing of its 10-K annual report to the Securities and Exchange Commission.