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 under the Securities Exchange Act of 1934 For the month of June 2023 Commission File No. 000-54189 MITSUBISHI UFJ FINANCIAL GROUP, INC. (Translation of registrant’s name into English) 7-1, Marunouchi 2-chome, Chiyoda-ku Tokyo 100-8330, Japan (Address of principal executive office) Indicate by check mark whether the registrant files or will file annual reports un ...