Redwood Shores, CA, November 8, 2011 – Imperva, Inc. (NYSE: IMPV), a pioneer and leader of a new category of data security solutions for high-value business data in the data center, today announced the pricing of its initial public offering of 5,000,000 shares of its common stock at a price to the public of $18 per share. The shares are expected to begin trading on the New York Stock Exchange under the symbol “IMPV.” Imperva is offering 4,750,000 shares of common stock and selling stockholders are offering 250,000 shares of common stock. In addition, Imperva has granted the underwriters a 30-day option to purchase up to 750,000 additional shares of common stock at the initial public offering price to cover over-allotments, if any.

J.P. Morgan Securities and Deutsche Bank Securities are acting as joint book-running managers for the offering. RBC Capital Markets, Lazard Capital Markets and Pacific Crest Securities are acting as co-managers.

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 state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

A registration statement relating to these securities has been filed with, and declared effective by, the Securities and Exchange Commission on November 8, 2011.  The offering is being made only by means of a prospectus.  Copies of the final prospectus, when available, may be obtained by visiting the SEC website at http://www.sec.gov/ or by contacting J.P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, or by telephone at (866) 803-9204; or Deutsche Bank Securities Inc., Attn: Prospectus Department, 100 Plaza One, Jersey City, New Jersey 07311-3988, by telephone at: (800) 503-4611, or by e-mail at: prospectus.cpdg@db.com.