Chicago, IL May 10, 2006 - InnerWorkings, Inc., a leading provider of print procurement solutions to corporate clients in the United States, announced today that it filed a registration statement with the Securities and Exchange Commission for an initial public offering of common stock. The number of shares to be offered and the price range for the offering have not yet been determined. InnerWorkings and certain of its stockholders are expected to sell the shares to be offered. The managing underwriter and book-running manager of the offering will be Morgan Stanley & Co. Incorporated. Jefferies Broadview, Piper Jaffray and William Blair & Company will serve as co-managers. When available, a preliminary prospectus relating to the offering may be obtained by emailing [email protected], or by contacting the prospectus department at Morgan Stanley, 1585 Broadway, New York, NY 10036 (212-761-6775). 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. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction.