Apr. 1984: Joined S&B Foods Inc. Aug. 1990: Joined Equitable Life Insurance Company of New York (now AXA Life Insurance Co., Ltd.). Oct. 2002: Founded the Company; Representative Director, President & CEO (current). Feb. 2014: Representative Director, Japan Tax Research Association. Mar. 2018: Director, Japan Tax Research Association (current).

Feb. 2011: Joined Asahi Tax Corporation / Asahi Business Solutions Co., Ltd. Aug. 2014: Joined Grant Thornton Taiyo LLC. Sep. 2014: Registered as Certified Public Accountant. Jul. 2019: Joined the Company. Jan. 2020: General Manager, Accounting & Finance Department. Jan. 2023: Head of Corporate Management Division (current). Mar. 2023: Director (current).

Apr. 2012: Joined A.T. Kearney K.K. May 2018: Joined NEC Corporation. Sep. 2020: Joined M-Theory Co., Ltd. (now Simon-Kucher & Partners Japan). Sep. 2021: Rejoined A.T. Kearney K.K. Jun. 2023: Joined the Company. Jul. 2023: General Manager, Corporate Strategy Office. Jan. 2024: Head of HR Business Division (current). Mar. 2024: Director (current).

Oct. 1983: Joined Sanwa Tokyo Marunouchi & Co. (now Deloitte Touche Tohmatsu LLC). Mar. 1987: Registered as Certified Public Accountant. Jul. 1997: Partner. Oct. 2005: Head of Yokohama Office. Sep. 2018: Established Ryohiro Mizukami CPA Office, Representative (current). Sep. 2018: Outside Director, Liberta Co., Ltd. Mar. 2019: Outside Director, the Company (current). Oct. 2019: Outside Audit & Supervisory Board Member, Stemrim Inc. (current). Sep. 2020: Outside Audit & Supervisory Board Member, Kudo Construction Co., Ltd. (current). Jun. 2021: Outside Director, Kojin Bio Co., Ltd.

Apr. 1996: Joined The Industrial Bank of Japan, Ltd. (now Mizuho Bank, Ltd.). Sep. 2000: Joined McKinsey & Company, Inc. Japan. Oct. 2002: Joined MKS Partners, Inc. Apr. 2007: Partner, MKS Partners, Inc. Apr. 2007: Non-Executive Director, Pressio Co., Ltd. (current). Dec. 2008: Representative Director, MKS Partners, Inc. Jan. 2010: Founded NH Partners, Inc.; Representative Director & Managing Partner (current). Sep. 2011: Outside Director, Arflex Japan Ltd. (current). May 2014: Chairman of the Board, TOOT Inc. (current). Mar. 2016: Outside Director, Noritsu Precision Co., Ltd. (current). Dec. 2018: Director, Aogarasu Inc. (current). Apr. 2019: Outside Director, JMDC Inc. (current). Aug. 2020: Outside Director, Halmek Holdings Co., Ltd. (current). Mar. 2022: Outside Director, the Company (current). Mar. 2023: Outside Director, Showa Glove Co., Ltd. (current).

Apr. 1986: Joined Toyo Shigyo Co., Ltd. Jan. 1989: Joined Fujita Shoji Co., Ltd. Jan. 2005: Joined the Company. Sep. 2007: Director, the Company. Mar. 2018: Director, Japan Tax Research Association. Oct. 2018: Director, Head of Sales Division, the Company. Jul. 2019: Director, Head of Corporate Management Division, the Company. Mar. 2020: Audit & Supervisory Board Member, the Company (current). Mar. 2020: Statutory Auditor, Japan Tax Research Association (current).

Apr. 1996: Joined Asahi & Co. (now KPMG AZSA LLC). Apr. 1998: Registered as Certified Public Accountant. Sep. 2005: Joined Clifixx Tax Corporation. Mar. 2006: Registered as Tax Accountant. Jun. 2006: Audit & Supervisory Board Member, Start Today Co., Ltd. (now ZOZO, Inc.). Dec. 2008: Founded Accounting Assist Co., Ltd.; Representative Director (current). Sep. 2009: Non-Executive Audit & Supervisory Board Member, ECnavi, Inc. (now CARTA HOLDINGS, Inc.). Oct. 2010: Non-Executive Audit & Supervisory Board Member, Do House Inc. Mar. 2013: Non-Executive Audit & Supervisory Board Member, Martex Co., Ltd. (now Warranty Technology Co., Ltd.). Mar. 2015: Non-Executive Audit & Supervisory Board Member, Vision Inc. (current). Apr. 2016: Non-Executive Audit & Supervisory Board Member, Cyber Area Research, Inc. (now Geolocation Technology, Inc.) (current). Mar. 2016: Non-Executive Audit & Supervisory Board Member, Featr Inc. Mar. 2017: Non-Executive Audit & Supervisory Board Member, Find Japan Co., Ltd. (current). Jun. 2017: Non-Executive Director, Generic Solution Co., Ltd. Dec. 2017: Non-Executive Audit & Supervisory Board Member, Ongakukan Co., Ltd. (current). Oct. 2018: Non-Executive Director, Featr Inc. Nov. 2018: Non-Executive Audit & Supervisory Board Member, Spocale Inc. (current). May 2019: Non-Executive Audit & Supervisory Board Member, Nile Works Inc. Mar. 2020: Non-Executive Audit & Supervisory Board Member, the Company (current). Jun. 2020: Outside Audit & Supervisory Board Member, JUNTENBIO Inc. (current). Jan. 2021: Non-Executive Audit & Supervisory Board Member, MIRAI-LABO Co., Ltd. (current). Jun. 2021: Non-Executive Director, gooddays Holdings Co., Ltd. Mar. 2024: Outside Director, Cookpad Inc. (current). Nov. 2024: Non-Executive Audit & Supervisory Board Member, Rodina Inc. (current). Mar. 2025: Non-Executive Audit & Supervisory Board Member, CARTA HOLDINGS, Inc. Jun. 2025: Substitute Audit & Supervisory Board Member, ZOZO, Inc. (current). Dec. 2025: Non-Executive Audit & Supervisory Board Member, Latera Inc. (current). Jan. 2026: Non-Executive Director, Good Com Asset Co., Ltd. (current).

Dec. 2010: Registered as Attorney at Law; Joined Iwamoto & Sato Law Office. May 2012: Joined Nara Law Office. Jul. 2015: Established Miminashiyama Law Office. Mar. 2018: Joined Tama no Mori Sogo Law Office. Mar. 2020: Non-Executive Audit & Supervisory Board Member, the Company (current). Jun. 2023: Established Kichijoji Linen Law Office. Mar. 2025: Non-Executive Counselor, Counseling Room Sequoia (current).