BLADELOGIC, INC. ANNOUNCES PROPOSED INITIAL PUBLIC OFFERING OF COMMON STOCK


Lexington, MA, April 5, 2007— BladeLogic, Inc. (“BladeLogic”) announced today that it has filed a registration statement with the Securities and Exchange Commission relating to the proposed initial public offering of its common stock. All shares in the offering will be sold by BladeLogic.

Morgan Stanley & Co. Incorporated and Merrill Lynch, Pierce, Fenner & Smith Incorporated will serve as joint book-running managers, and Citigroup Global Markets Inc., Wachovia Capital Markets, LLC and Cowen and Company, LLC will serve as co-managers for the proposed offering.

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 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. Any offer or sale will be made only by means of a written prospectus forming part of the effective registration statement.

Once available, a preliminary prospectus relating to these securities may be obtained by contacting either:

Morgan Stanley & Co. Incorporated, 1585 Broadway, New York, NY 10036, Attention: Prospectus Department, by calling 212-761-6775 or by emailing prospectus@morganstanley.com.

Merrill Lynch, Pierce, Fenner & Smith Incorporated, World Financial Center, 250 Vesey Street, New York, NY 10080 or by calling (212) 449-1000.

Company Contact:
John Gavin
Chief Financial Officer
BladeLogic, Inc.
781-257-3500