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☑ ☐ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , DC 20549 Form 10 - K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-07511 STATE STREET CORPORATION ( Exact name of registrant as specified in its charter ) MA ( State or other jurisdiction of incorporation ) One Lincoln Street Boston , MA ( Address of principal executive offices ) Securities registered pursuant to Section 12 ( b ) of the Act : ( 617 ) 786-3000 ( Registrant's telephone number , including area code ) Title of Each Class Common Stock , $ 1 par value per share Depositary Shares , each representing a 1 / 4,000th ownership interest in a share of Fixed - to - Floating Rate Non - Cumulative Perpetual Preferred Stock , Series D , without par value per share Depositary Shares , each representing a 1 / 4,000th ownership interest in a share of Fixed - to - Floating Rate Non - Cumulative Perpetual Preferred Stock , Series G , without par value per share Trading Symbol ( s ) STT STT.PRD STT.PRG 04-2456637 ( I.R.S. Employer Identification No. ) 02111 ( Zip Code ) Name of each exchange on which registered New York Stock Exchange New York Stock Exchange New York Stock Exchange Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes ☐ No ☑ Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes No ☑ Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No ☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( § 232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes > No ☐ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer " , " accelerated filer " , " smaller reporting company " , and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer Emerging growth company > ☐ Accelerated filer ☐ Non - accelerated filer ☐ Smaller reporting company ㅁ If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . The aggregate market value of the voting and non - voting common equity held by non - affiliates computed by reference to the per share price ( $ 63.55 ) at which the common equity was last sold as of the last business day of the registrant's most recently completed second fiscal quarter ( June 30 , 2020 ) was approximately $ 22.34 billion . The number of shares of the registrant's common stock outstanding as of January 29 , 2021 was 351,786,357 . Portions of the following documents are incorporated by reference into Parts of this Report on Form 10 - K , to the extent noted in such Parts , as indicated below : ( 1 ) The registrant's definitive Proxy Statement for the 2021 Annual Meeting of Shareholders to be filed pursuant to Regulation 14A on or before April 30 , 2021 ( Part III ) .