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Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 20 - F ( Mark One ) ☐ ☑ REGISTRATION STATEMENT PURSUANT TO SECTION 12 ( b ) OR ( g ) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31 , 2021 OR ☐ ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of event requiring this shell company report For the transition period from to Commission file number 001-33098 Kabushiki Kaisha Mizuho Financial Group ( Exact name of Registrant as specified in its charter ) Mizuho Financial Group , Inc. ( Translation of Registrant's name into English ) Japan ( Jurisdiction of incorporation or organization ) 1-5-5 Otemachi Chiyoda - ku , Tokyo 100-8176 Japan ( Address of principal executive offices ) Tomomichi Fujita , + 81-3-5224-1111 , + 81-3-5224-1059 , address is same as above ( Name , Telephone , Facsimile number and Address of Company Contact Person ) Securities registered or to be registered pursuant to Section12 ( b ) of the Act . Title of each class American depositary shares , each of which represents two shares of common stock Common Stock , without par value * Trading Symbols MFG Securities registered or to be registered pursuant to Section12 ( g ) of the Act . None ( Title of Class ) Name of each exchange on which registered The New York Stock Exchange Securities for which there is a reporting obligation pursuant to Section15 ( d ) of the Act : None ( Title of Class ) Indicate the number of outstanding shares of each of the issuer's classes of capital or common stock as of the close of the period covered by the annual report . At March 31 , 2021 , the following shares of capital stock were issued : 2,539,249,894 shares of common stock ( including 552,914 shares of common stock held by the registrant as treasury stock ) . Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . If this report is an annual or transition report , indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 . Yes ☑ No □ Yes □ No ☑ Note Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 from their obligations under those Sections . 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 , or an emerging growth company . See definition of " large accelerated filer , " accelerated filer , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer Accelerated filer Non - accelerated filer Emerging growth company If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP , 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 Section13 ( a ) of the Exchange Act .