STT State Street Corporation

State Street Corporation (NYSE: STT), the world's leading provider of financial services to institutional investors, announced today that State Street has been appointed to provide custody, accounting, securities lending and compliance services for the Saskatchewan Teachers' Superannuation Commission (STSC). The Teachers' Superannuation Fund represents CAD1.7 billion in assets. The Commission, which was established under The Teachers' Superannuation and Disability Benefits Act and is sponsored by the Province, administers pension, long-term disability, dental and group life benefits for Saskatchewan teachers. "Throughout our long due diligence process, State Street demonstrated an impressive focus and commitment to meeting its customers' business and technology needs," said Dave Barnard, executive director of the STSC. "We are confident that State Street will offer operational efficiencies and first-class customer service as we continue to meet the needs of plan beneficiaries and people of Saskatchewan." "We are very pleased to have earned the trust of the Commission, and are looking forward to partnering with them," said Doreen Rigby, managing director of State Street's investor services business in Canada. "State Street's reputation for consistently providing exceptional customer service continues to set us apart in the Canadian market as we partner with several of Canada's leading investment organizations." State Street established its Canadian presence in 1990, opening its first office in Toronto. Today, with more than 1,100 employees in offices located in Toronto, Montreal and Vancouver, State Street provides services to a comprehensive list of Canadian clients including: 8 of the 10 largest pension plans, 8 of the 10 largest mutual fund complexes and 8 of the 10 largest institutional investment managers. 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 services. With $10.7 trillion in assets under custody and $1.5 trillion in assets under management (as of March 31, 2006), State Street operates in 26 countries and more than 100 geographic markets worldwide. For more information, visit State Street's Web site at www.statestreet.com.