SUMITOMO MITSUI FINANCIAL GROUP, INC. (Translation of registrant's name into English) 1-2, Marunouchi 1-chome, Chiyoda-ku, Tokyo 100-0005, Japan UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 OF THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2022 Commission File Number 001-34919 (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to 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 Commission file number: 001-34919 Kabushiki Kaisha Mitsui Sumitomo Financial Group (Exact name of Registrant as specified in i ...