CRA International Closes Sale of Common Stock in Public Offering.

BOSTON -- CRA International, Inc. (NASDAQ: CRAI), announced today the completion of the public offering of 1,899,227 shares of its common stock at a price of $53.75 per share.

Of the 1,899,227 shares sold, 710,000 shares were offered by CRA International, and 1,189,227 came from selling stockholders. CRA received net proceeds of approximately $35.8 million, after deducting the underwriting discount and estimated offering expenses. As part of the offering, CRA received additional net proceeds of approximately $2.5 million from the exercise of options by the selling shareholders. The underwriters have a 30-day option to purchase up to an additional 284,884 shares of common stock, or 15% of the initial total shares offered, to cover over-allotments, if any.

The net proceeds from the offering are intended to be used for general corporate purposes, including working capital and possible acquisitions of and investments in complementary businesses. CRA did not receive any net proceeds from the sale of shares by the selling stockholders.

The offering was managed by J.P. Morgan Securities Inc. and William Blair & Company, L.L.C. as joint book-running managers, with Piper Jaffray & Co. and Adams Harkness, Inc. as co-managers. The final prospectus relating to this offering may be obtained by contacting the Prospectus Department of: J.P. Morgan Securities Inc., One Chase Manhattan Plaza, Floor 5B, New York, New York 10081, tel. [phone]; William Blair & Company, L.L.C., 222 West Adams Street, Chicago, Illinois 60606, tel. [phone]; Piper Jaffray & Co., 800 Nicollet Mall, Minneapolis, Minnesota 55401, tel. [phone]; or Adams Harkness, Inc., 99 High Street, Boston, Massachusetts 02110, tel. [phone]. The prospectus may be viewed on the Internet at http://www.sec.gov.

A registration statement relating to these securities has been filed and declared effective by the Securities and Exchange Commission. This news 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 in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such state.

About CRA

Founded in 1965, CRA International is an economics, finance, and business consulting firm that works with businesses, law firms, accounting firms, and governments in providing a wide range of services. CRA combines economic and financial analysis with expertise in litigation and regulatory support, business strategy and planning, market and demand forecasting, policy analysis, and engineering and technology management. The firm is distinguished by a corporate philosophy of providing responsive, top-quality consulting; an interdisciplinary team approach; unsurpassed economic, financial, and other analytic skills; and pragmatic business insights. In addition to its corporate headquarters in Boston and international offices in Brussels, Canberra, Dubai, Hong Kong, London, Melbourne, Mexico City, Sydney, Toronto, and Wellington, CRA also has U.S. offices in Cambridge, Chicago, College Station, Dallas, Houston, New York, Oakland, Pasadena, Philadelphia, Salt Lake City, Silicon Valley, and Washington, D.C.

Safe Harbor 

Statements in this press release concerning the intended use of proceeds from the public offering are "forward-looking" statements as defined in the Private Securities Litigation Reform Act of 1995. Such statements are based on management's current expectations and are subject to a number of factors and uncertainties. Information contained in these forward-looking statements is inherently uncertain, and actual performance and results may differ materially. Such factors that could cause actual results to differ materially from any forward-looking statements made by CRA include, among others, the potential loss of clients, the potential loss of key personnel, the difficulty of attracting and retaining qualified consultants, dependence on outside experts, intense competition, and professional liability. Further information on factors that could affect CRA's financial results is included in its most recent Form 10-Q filed on June 21, 2005 with the Securities and Exchange Commission.