Forrester Research, Inc. (Nasdaq: FORR) today announced that it has filed a registration statement with the Securities and Exchange Commission for a public offering of 2,840,000 split-adjusted shares of its common stock. Of the shares being offered, 200,000 split-adjusted shares will be offered by the Company. The remaining 2,640,000 split-adjusted shares will be offered by selling shareholders, including the Company’s Chairman and Chief Executive Officer, George F. Colony, who is selling 2 million of his approximately 11.3 million split-adjusted shares. In addition, the Company has granted to the underwriters of the offering an option to purchase an additional 426,000 shares to cover over-allotments. The offering will be managed by Goldman, Sachs & Co.; Adams, Harkness & Hill, Inc.; Thomas Weisel Partners LLC; FAC/Equities; and William Blair & Company.

All of the share numbers indicated above are on a post-split basis and give effect to the two-for-one stock split announced on January 18, 2000 by the Company. The stock split is being effected in the form of a 100 percent stock dividend which is payable on or about February 7, 2000 to stockholders of record on January 31, 2000.

A preliminary prospectus relating to these securities will be available from Goldman, Sachs & Co. at 85 Broad Street, New York, New York, 10004, 212-902-1000.