MADISON, Wis.--(BUSINESS WIRE)--TomoTherapy Incorporated (NASDAQ:TTPY) announced today the pricing of a public offering of 8,500,000 shares of its common stock at a price of $22.25 per share. All of the shares are being sold by certain selling shareholders of TomoTherapy. TomoTherapy will not receive any of the proceeds from the sale of shares by the selling shareholders. The closing of the offering is scheduled to take place on October 16, 2007. The selling shareholders have granted the underwriters a 30-day option to purchase up to an additional 1,275,000 shares of common stock at the public offering price to cover over-allotments, if any.