Constant Contact Inc., a provider of on-demand email marketing solutions for small businesses, nonprofits, and associations, has announced that it has filed a registration statement with the Securities and Exchange Commission relating to a proposed initial public offering of its common stock. Upon effectiveness of the registration statement, the common stock is expected to trade on the NASDAQ Global Market under the symbol CTCT. CIBC World Markets and Thomas Weisel Partners will act as joint book-runners for the offering and William Blair & Company, Cowen and Company, and Needham & Company will act as co-managers. A registration statement relating to these securities has been filed with the Securities and Exchange Commission, but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective.