Born Mar 1975 Apr 2002 Joined the Company Dec 2010 Director, Executive Officer, Accounting Firm Business Division; in charge of Enterprise Information Systems Sales HQ and Head of G Project Promotion HQ Oct 2012 Director, Executive Officer, Accounting Firm Business Division; Head of Enterprise Information Systems Sales HQ Dec 2012 Director, Managing Executive Officer, Accounting Firm Business Division; Head of Enterprise Information Systems Sales HQ Apr 2014 Director, Managing Executive Officer, Accounting Firm Business Division; Head of Sales HQ Oct 2016 Representative Director, Senior Managing Executive Officer, Head of Accounting Firm Business Division and Sales HQ Oct 2018 Representative Director, Senior Managing Executive Officer, Head of Accounting Firm Business Division Dec 2019 Representative Director, President and Executive Officer, Head of Accounting Firm Business Division (current) Dec 2019 Representative Director, President, TKC Customer Support Service Co., Ltd. (current)

Born Jan 1971 Apr 2003 Joined the Company Dec 2010 Executive Officer, Local Government Business Division, Sales Planning HQ, ASP Service Promotion Dept. General Manager Dec 2011 Director, Executive Officer, Local Government Business Division; in charge of New Business Strategy HQ Jan 2012 Director, Executive Officer, Local Government Business Division; Head of Cloud Business Promotion HQ Dec 2018 Director, Managing Executive Officer, Local Government Business Division; Head of Sales HQ Dec 2020 Representative Director, Senior Managing Executive Officer, Head of Local Government Business Division (current) Dec 2020 Representative Director, President, TKC Security Service Co., Ltd. (current)

Born Feb 1955 Apr 1977 Joined the Company Dec 2006 Executive Officer, Local Government Business Division, Systems Development HQ Jan 2008 Executive Officer, Head of Internal Control Center Dec 2013 Representative Director, Vice President, Skycom Corporation Dec 2014 Representative Director, President, Skycom Corporation (current) Dec 2020 Senior Managing Executive Officer of the Company Dec 2020 Director, Senior Managing Executive Officer; in charge of Skycom Corporation (current)

Born Apr 1967 Apr 1990 Joined the Company Dec 2007 Executive Officer, Systems Development Research Institute; Head of User Interface Design HQ Oct 2010 Executive Officer, Accounting Firm Business Division; Head of Sales Planning HQ Dec 2013 Director, Executive Officer, Accounting Firm Business Division; Head of Sales Planning HQ Apr 2014 Director, Executive Officer, Accounting Firm Business Division; Head of Sales Planning Dept. Dec 2016 Executive Officer, Systems Development Research Institute; Head of Tax Information Systems Design Center Jan 2018 Executive Officer, Systems Development Research Institute; Head of User Interface Design HQ Dec 2019 Managing Executive Officer, Systems Development Research Institute; Head of User Interface Design HQ Oct 2020 Managing Executive Officer, Systems Development Research Institute; Head of Tax Information Systems Design Center Dec 2022 Director, Managing Executive Officer; Head of Systems Planning HQ, Systems Development Research Institute (current)

Born Aug 1969 Apr 1994 Joined the Company Apr 2018 Head of Technology Infrastructure Development Center, Local Government Business Division Dec 2019 Executive Officer; Head of Technology Infrastructure Development Center, Local Government Business Division Dec 2020 Executive Officer; Head of Systems Development HQ, Local Government Business Division Dec 2021 Head of Systems Development HQ, Local Government Business Division Dec 2022 Director, Executive Officer; Head of Systems Development HQ, Local Government Business Division Dec 2024 Director, Managing Executive Officer; Head of Systems Development HQ, Local Government Business Division (current)

Born Jul 1957 Aug 1985 Registered as Certified Public Accountant Feb 1987 Registered as Certified Tax Accountant Feb 1987 Opened own practice Jan 2003 Representative Partner, Kato Kaikei Jimusho Tax Accountant Corporation (current) Dec 2022 Director of the Company (current)

Born Jun 1971 Apr 1994 Joined UBS Securities Japan Co., Ltd. Nov 1998 Joined Commerzbank (current name) Dec 2008 Registered as Attorney-at-law Dec 2008 Joined Baker & McKenzie (Gaikokuho Kyodo Jigyo) Mar 2013 Founded Waseda Legal Commons Law Office Nov 2018 Outside Director, Compliance Partners Co., Ltd. (current) Dec 2020 Outside Audit and Supervisory Board Member, T. Rowe Price Japan, Inc. Jan 2022 Partner Attorney, Kollect Partners Law Office (current) Nov 2023 Outside Director, Esporia Co., Ltd. Jun 2024 Outside Director, Synspective Inc. (current) Dec 2024 Director of the Company (current) Jun 2025 Outside Audit and Supervisory Board Member, EXA Wizards Inc. (current)

Born Apr 1958 Jul 2013 Director-General, Tax Policy Department, Tokyo Metropolitan Government Bureau of Taxation Jul 2016 Director-General, General Affairs Department, Tokyo Metropolitan Government Bureau of Taxation Aug 2017 Representative Director, President, Tokyo Traffic Development Co., Ltd. (Director, Tokyo Metropolitan Bureau of Transportation) Apr 2018 Chairman, Local Tax Digitalization Council, General Incorporated Association (Director, Tokyo Metropolitan Government Bureau of Taxation) Apr 2019 Chairman, Local Taxation Cooperation Organization Jun 2023 Chairman, Tokyo Tax Association, Public Interest Incorporated Foundation Dec 2024 Director of the Company (current)

Born Jan 1967 Apr 1989 Joined the Company Aug 2012 Executive Officer, Accounting Firm Business Division; Head of Accounting Information Systems Development Center, Systems Development Research Institute Dec 2016 Director, Executive Officer, Accounting Firm Business Division; General Manager, Sales Planning Dept., Sales HQ Dec 2017 Director, Managing Executive Officer, Accounting Firm Business Division; General Manager, Sales Planning Dept. Jan 2018 Director, Managing Executive Officer, Accounting Firm Business Division; Head of Systems Development Research Institute Dec 2022 Full-time Audit and Supervisory Board Member of the Company (current) Dec 2023 Audit and Supervisory Board Member, TKC Security Service Co., Ltd. (current) Dec 2023 Audit and Supervisory Board Member, TKC Customer Support Service Co., Ltd. (current) Dec 2025 Audit and Supervisory Board Member, TLP Co., Ltd. (current)

Born Aug 1967 Apr 1991 Joined the Company Jan 2009 Head of Systems Development HQ, Systems Development Research Institute; concurrently Head of .NET Engineering Center Oct 2012 Deputy Head, Management Administration HQ Oct 2016 Head of Third Enterprise Information Sales Dept., Sales HQ Dec 2018 Executive Officer; Head of Accounting HQ; concurrently Head of In-house Systems Promotion Section Jan 2021 Head of DX Development Center, President's Office Dec 2022 DX Promotion Leader, Systems Planning HQ, Systems Development Research Institute Dec 2024 Audit and Supervisory Board Member of the Company (current)

Born Sep 1961 Aug 1985 Joined Aoyama Audit Corporation (now PwC Japan LLC), Osaka Office Oct 1989 Joined Miyanaka Mikio CPA Office Jun 1995 Outside Audit and Supervisory Board Member, Nishimoto Sangyo Co., Ltd. (now Canon Medtech Supply Co., Ltd.) Jan 2006 Head, Taenaka Shigeki CPA Office (current) Jun 2009 Outside Audit and Supervisory Board Member, Nihon System Gijutsu Co., Ltd. Jan 2018 Outside Audit and Supervisory Board Member, Denkyo Co., Ltd. (now Denkyo Group Holdings Co., Ltd.) (current) Jun 2019 Outside Audit and Supervisory Board Member, Daibiru Corporation Jan 2022 Representative Partner, Taenaka Tax Accountant Corporation (current) Dec 2023 Audit and Supervisory Board Member of the Company (current)

Born Jul 1960 Apr 1983 Joined Mitsui Life Insurance Co., Ltd. (now Taiju Life Insurance Co., Ltd.) Mar 1992 Joined Aoyama Audit Corporation (now PwC Japan LLC) Aug 1995 Joined Deloitte Tohmatsu LLC Jan 1997 Principal, Harada Certified Public Accountant and Tax Accountant Office (current) Jan 2002 Representative Director, Business Brain Harada Accounting Co., Ltd. (current) Feb 2023 Representative Director, Business Support Harada Accounting Co., Ltd. (current) Dec 2024 Audit and Supervisory Board Member of the Company (current)