STT State Street Corporation

State Street Corporation today announced a quarterly dividend of $.18 per share, payable October 17, 2005, to stockholders of record as of October 3, 2005. Following today's action, the quarterly dividend rate is 13 percent higher than a year ago. State Street Corporation (NYSE: STT) is the world's leading specialist in providing institutional investors with investment servicing, investment management and investment research and trading. With $9.6 trillion in assets under custody and $1.4 trillion in assets under management as of June 30, 2005, State Street operates in 25 countries and more than 100 geographic markets worldwide. For more information, visit State Street's web site at www.statestreet.com.