STT State Street Corporation

State Street Corporation (NYSE: STT) today announced that it intends to conduct a public offering of approximately $500 million of non-dilutive securities eligible for treatment as tier 1 regulatory capital. The proposed offering to the public is expected to commence on or about January 17, 2008. State Street proposes to use the net proceeds it receives in the offering for general corporate purposes. Goldman, Sachs & Co. will act as sole bookrunner for the proposed offering. The proposed offering will be made only by means of a prospectus. Once the prospectus is available, a copy may be obtained from: Goldman, Sachs & Co. Attention: Prospectus Department 85 Broad Street New York, New York 10004 via email: prospectus-ny@ny.email.gs.com via fax: (212) 902-9316 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 in which such offer, solicitation or sale would be unlawful, prior to registration or qualification under the securities laws of any state.