Power of Attorney for Brian J. Porter at State Street Corp

Brian J. Porter, a director of State Street Corporation, has executed a Power of Attorney appointing several individuals as his attorneys-in-fact. These attorneys are authorized to act on his behalf in matters related to SEC filings, including the preparation and submission of Forms 3, 4, and 5, as well as managing his EDGAR account. The Power of Attorney grants these individuals the authority to perform necessary actions to ensure compliance with Section 16(a) of the Securities Exchange Act of 1934. The document remains in effect until Porter is no longer required to file these forms or until it is revoked in writing.