ANDOVER, Mass.--(BUSINESS WIRE)--Diomed Holdings, Inc. (AMEX: DIO), a leading developer and marketer of minimally invasive medical technologies, including its patented EndoVenous Laser Treatment (EVLT®) for varicose veins, today announced that on September 29, 2006, it completed a $10 million private placement of a new series of its preferred stock, first announced on July 27, 2006. In this transaction, new investors paid an aggregate of $10,010,000 for a new series of preferred stock and all holders of outstanding shares of preferred stock tendered their existing preferred shares for shares of the new series of preferred stock.