Mar 1980 Joined Keiei Joho Center Co., Ltd. Nov 1989 Director, Keiei Joho Center Co., Ltd. Apr 1993 Transferred to M.I.C. System Co., Ltd. Dec 1996 Representative Director, M.I.C. System Co., Ltd. Nov 1997 Established D.I. System Co., Ltd. (limited liability company) Jul 1999 Reorganized as a stock company; Representative Director, President of the Company Dec 2019 Representative Director, Chairman of the Company Dec 2025 Director and Chairman of the Company (current)

Feb 1999 Joined I.S.K. Co., Ltd. Feb 2001 Joined the Company Apr 2006 Director, General Manager, Network Integration Department Oct 2006 Director, General Manager, Solutions Division No. 2 Apr 2007 Director, General Manager, Solutions Division Oct 2009 Director, General Manager, Sales Division May 2011 Director, General Manager, Sales Division; General Manager, IT Business Division Oct 2013 Director, General Manager, Eastern Japan Business Division Oct 2014 Managing Director Jan 2015 Managing Director; Director, Asley Brains Co., Ltd. Oct 2015 Managing Director; in charge of overall business management Dec 2019 Representative Director, President of the Company (current) Jul 2023 In charge of IT Infrastructure Solutions Division (current); General Manager, DX Solutions Division; in charge of Sales Planning Division Oct 2024 General Manager, Sales Division (current); in charge of DX Solutions Division (current) Representative Director, President, Asley Brains Co., Ltd. (current)

Nov 2001 Joined Accenture K.K. Jan 2004 Joined the Company Apr 2006 Director, General Manager, General Affairs Department Apr 2007 Director, General Manager, Administration Division May 2011 Director, General Manager, Planning Division Apr 2012 Director, General Manager, Technology Division May 2013 Director; Director, Asley Brains Co., Ltd. Oct 2013 Director, in charge of Management Planning Oct 2014 Managing Director Dec 2019 Senior Managing Director Oct 2021 Senior Managing Director; Representative Director, Stepcom Co., Ltd. Oct 2022 Senior Managing Director; in charge of Finance, Administration and Corporate Planning Divisions May 2024 Senior Managing Director; in charge of Finance, Administration and Corporate Planning Divisions; General Manager, Business Promotion Department (current) Oct 2024 Senior Managing Director; in charge of Finance and Administration Divisions (current); Vice President and Director, Stepcom Co., Ltd. (current) Dec 2024 Director and Vice President of the Company Dec 2025 Representative Director, Executive Vice President of the Company (current)

Apr 1989 Joined C.S.E. Co., Ltd. Oct 2000 Joined the Company Apr 2006 General Manager, System Integration Department Oct 2009 General Manager, Solutions Sales Department Oct 2011 General Manager, Internal Audit Office Oct 2014 Executive Officer Dec 2021 Director, General Manager, Corporate Planning Division Jul 2022 Director; Director, Wise Systems Co., Ltd. Sep 2022 Director; Representative Director, President, Wise Systems Co., Ltd. (current) Oct 2024 Director; in charge of Corporate Planning Division (current) Dec 2025 Managing Director of the Company (current)

Apr 1999 Joined Furuno Systems Co., Ltd. Jan 2001 Joined the Company Apr 2006 General Manager, Osaka Branch Oct 2007 Director (current); General Manager, Western Japan Business Division Oct 2008 General Manager, Technology Division Oct 2015 General Manager, Business Promotion Department Nov 2019 Director, Asley Brains Co., Ltd. Dec 2021 General Manager, System Integration Business Division (current)

May 2004 Joined the Company Apr 2012 General Manager, Network Integration Department Dec 2014 General Manager, Business Support Department Oct 2016 General Manager, Business Integration Business Division (current) Dec 2023 Director of the Company (current)

Apr 2007 Joined USEN Corporation Sep 2008 Joined Mitsubishi UFJ Trust Business Co., Ltd. May 2012 Sub-leader, International Affairs Section 1, International Business Division, Mitsubishi UFJ Trust Business Co., Ltd. Dec 2025 Director of the Company (current)

Oct 2005 Registered as attorney-at-law; joined Murakami Sogo Law Office (current) Oct 2012 Support Staff (Senior Settlement Specialist), Nuclear Damage Compensation Dispute Settlement Mediation Office, Research and Development Bureau, Ministry of Education, Culture, Sports, Science and Technology (current) Oct 2018 Appointed Part-time Judge, Tokyo Family Court Dec 2025 Director, Full-time Audit and Supervisory Committee Member of the Company (current)

Apr 1998 Registered as attorney-at-law; joined Kitano Koichi Law Office Apr 2000 Established DoSOLO Law Office (co-managed) Oct 2001 Legal Division, Matsushita Electric Industrial Co., Ltd. (now Panasonic Holdings Corporation) Nov 2007 Legal Department Leader, Fast Retailing Co., Ltd. Nov 2012 General Manager, Legal Department, U.S.J. Co., Ltd. (now U.S.J. LLC) Jan 2018 Legal Manager, Coach A Co., Ltd. Dec 2019 Director of the Company Mar 2020 Director, Audit and Supervisory Committee Member, Coach A Co., Ltd. (current) Jul 2020 Councilor, Osaka University of Economics (current) Aug 2021 Audit & Supervisory Board Member, Prime Road Co., Ltd. (current) Jun 2022 Director, Audit and Supervisory Committee Member, KPP Group Holdings Co., Ltd. (formerly Kokusai Pulp & Paper Trading Co., Ltd.) (current) Dec 2023 Director, Audit and Supervisory Committee Member of the Company (current)

Oct 1995 Joined Ota Showa Audit Corporation (now EY ShinNihon LLC) Sep 1997 Joined Kobayashi Tokimune Tax Accountant Office (now Accounting Practice Research Institute Tax Corporation) Oct 2014 Opened Tatsuta Tax Accounting Office (current) Jun 2017 Director, Laurea Co., Ltd. (current) Jan 2021 Established punctum Co., Ltd.; Representative Director (current) Dec 2021 Audit & Supervisory Board Member of the Company Mar 2022 Director, Audit and Supervisory Committee Member, Double Scope Co., Ltd. (current) Dec 2023 Director, Audit and Supervisory Committee Member of the Company (current)