Medidata Solutions Prices Initial Public Offering

NEW YORK — June 25, 2009 — Medidata Solutions, a leading global provider of hosted clinical development solutions, today announced the pricing of its initial public offering of 6,300,000 shares of common stock at $14.00 per share. In addition, selling stockholders have granted the underwriters a 30–day option to purchase up to 945,000 shares of common stock at the initial public offering price to cover over-allotments, if any. Medidata’s common stock will commence trading on the NASDAQ Global Market on June 25, 2009, under the ticker symbol “MDSO.”


Citi and Credit Suisse Securities (USA) LLC acted as joint bookrunning managers for the proposed offering. Jefferies & Company, Inc. and Needham & Company, LLC acted as co-managers.


A registration statement relating to these securities was declared effective by the Securities and Exchange Commission on June 24, 2009. Any offer or sale will be made only by means of a written prospectus forming part of the effective registration statement. A copy of the final prospectus may be obtained directly from:


Brooklyn Army Terminal
140 58th Street, 8th Floor
Brooklyn, N.Y. 11220
Telephone: (800) 831-9146


Credit Suisse Securities (USA) LLC
Prospectus Department
One Madison Avenue
New York, N.Y. 10010
Telephone: (800) 221-1037


This press release does not constitute an offer to sell or a solicitation of an offer to buy the securities in this offering, nor shall there be any sale, offer or solicitation of these securities in any state or jurisdiction in which such sale, offer or solicitation would be unlawful prior to registration or qualification under the securities laws of any state or jurisdiction.