Boston , April 7, 2008 – State Street Corporation (NYSE:STT), the world’s leading provider of financial services to institutional investors, today announced the appointment of Maureen Miskovic to chief risk officer. In this newly created senior role, Miskovic will lead a global team of more than 250 multi-disciplinary enterprise risk professionals that support State Street’s business, customers and operations worldwide. She will report to Ronald E. Logue, State Street’s chairman and CEO and join the company’s Operating Group, State Street’s senior-most strategy and policy-making team. With this announcement Miskovic will step down, effective immediately, from State Street’s Board of Directors.

“Maureen’s appointment builds on our already strong risk management culture and infrastructure,” said Logue. “State Street has achieved considerable global growth over the past five years and in creating this role, we intend to focus the intellectual capital and leadership skills of this highly experienced industry veteran to advance the strategy for our risk organization at a time of unprecedented complexity and change within the financial services industry.”

Miskovic, a British citizen, has served in a number of senior executive management roles across both business and corporate functions in leading financial organizations including Lehman Brothers, where she served as chief risk officer as well as a member of the firm’s Investment and Diversity Committees. Prior to this appointment she held the position of Treasurer at Morgan Stanley in London responsible for capital planning, bank relations and cash management for its European and Indian businesses. Before Morgan Stanley, Miskovic spent eight and a half years at S.G. Warburg in London working initially within its capital markets group and then as Group Treasurer and head of risk management. During her tenure at S.G. Warburg she was nominated to the Board of Warburg Securities.

Most recently, Miskovic served as senior advisor to the Eurasia Group, a research and consulting firm focusing on political risk analysis and industry research for global markets. She was named to NRG Energy’s board in 2005 and chaired its Commercial Operations Oversight Committee. In 2006, she was elected to State Street’s Board of Directors. Miskovic graduated from King’s College at London University.

“I’m tremendously excited by the opportunity this new role presents and to transition from the board to State Street’s senior leadership team,” said Miskovic. “This is a company that clearly understands the strategic importance of risk management and has built an outstanding team of risk professionals globally. I look forward to leading this team as we support State Street’s continued growth and global expansion.”

State Street Corporation (NYSE: STT) is the world's leading provider of financial services to institutional investors including investment servicing, investment management and investment research and trading. With $15.3 trillion in assets under custody and $2 trillion in assets under management at December 31, 2007, State Street operates in 26 countries and more than 100 geographic markets worldwide. For more information, visit State Street’s website at www.statestreet.com.

Forward-Looking Statements

This news announcement contains forward-looking statements as defined by United States securities laws, including statements about State Street’s goals, opportunities and business environment. These statements are not guarantees of future performance, are inherently uncertain, are based on current assumptions that are difficult to predict and involve a number of risks and uncertainties. Therefore, actual outcomes and results may differ materially from what is expressed in those statements, and those statements should not be relied upon as representing State Street's expectations or beliefs as of any date subsequent to the date of this release. Important factors that may affect future results and outcomes include the financial, market and competitive factors set forth in State Street's 2007 Annual Report on Form 10-K and its subsequent SEC filings. State Street encourages investors to read its 10-K, particularly the section on Risk Factors, and its subsequent SEC filings for additional information with respect to any forward-looking statements and prior to making any investment decision. The forward-looking statements contained in this press release speak only as of the date hereof, April 7, 2008, and State Street will not undertake efforts to revise those forward-looking statements to reflect events after this date.