Aug 1974 Joined the Company Mar 1980 Director of the Company Mar 1982 Managing Director of the Company Mar 1985 Director and Executive Vice President of the Company Mar 1987 Representative Director, President of the Company Jun 2015 Outside Director, Eisai Co., Ltd. Mar 2019 Representative Director, Chairman and President of the Company Mar 2020 Representative Director, Chairman of the Company (current) Jun 2020 Outside Audit & Supervisory Board Member, Fujikyu Limited (current) Jun 2023 Outside Director, Casio Computer Co., Ltd. (current)

Apr 2005 Joined the Company Apr 2010 General Manager, Gunma Plant Apr 2012 General Manager, Sales Planning Department Mar 2013 Director, in charge of Corporate Planning Nov 2015 Director, in charge of Corporate Planning; General Manager, Overseas Sales Planning Department Mar 2016 Director, in charge of Product Development and New Business Mar 2017 Managing Director, in charge of Writing Instruments Business, New Business, Product Development, and Company-wide Quality Mar 2018 Executive Vice President and Director Mar 2019 Executive Vice President, Representative Director Mar 2020 Representative Director, President (current) Mar 2022 In charge of New Business and Internal Audit (current) Nov 2023 In charge of Production and Company-wide Production Technology Oct 2025 In charge of Corporate Planning

Apr 1981 Joined the Company Apr 2003 General Manager, Product Development Department Apr 2007 Director, Gunma R&D Center Apr 2011 General Manager, Product Development Department Mar 2012 Director, General Manager, Product Development Department Mar 2016 Director, in charge of Technology, Intellectual Property, and Cosmetics Business Mar 2018 Managing Director, in charge of Technology, Intellectual Property, Cosmetics Business, and New Business Mar 2019 Director, Managing Executive Officer, in charge of Industrial Materials Mar 2020 General Manager of Technology; in charge of Company-wide Quality Mar 2021 In charge of Environment Mar 2022 In charge of Sustainability Mar 2024 Director, Senior Managing Executive Officer Mar 2026 Director of the Company (current)

Apr 1985 Joined the Company Apr 2009 General Manager, President's Office Aug 2009 General Manager, Sales Planning Department Apr 2013 General Manager, Corporate Planning Office Apr 2017 General Manager, IT Solutions Center Apr 2018 Officer and General Manager, IT Solutions Center Mar 2019 Executive Officer and General Manager, IT Solutions Center Mar 2020 Senior Executive Officer, General Manager, Corporate Planning Office; in charge of Systems Mar 2021 In charge of Human Resources and Systems (current) Mar 2022 Director of the Company Mar 2023 In charge of Legal Affairs (current) Mar 2024 Director, Managing Executive Officer (current)

Apr 1985 Joined the Company Apr 2007 General Manager, Product Development Department Jul 2011 Representative Director, MITSUBISHI PENCIL VIETNAM CO., LTD. Jul 2013 Managing Director, Mitsubishi Pencil Tokyo Sales Co., Ltd. Apr 2015 General Manager, Sales Planning Department Mar 2017 Director of the Company; General Manager, Domestic Sales Department Mar 2019 Senior Executive Officer; General Manager, Domestic Sales and Product Development Departments Mar 2022 Managing Executive Officer; in charge of Domestic Sales; General Manager, Product Development Department Mar 2024 Director, Managing Executive Officer; in charge of Domestic Sales and Product Development (current)

Mar 1979 Doctor of Engineering, Keio University Apr 1988 Associate Professor, Department of Mechanical Engineering, Faculty of Science and Technology, Keio University Apr 1995 Professor, Department of Mechanical Engineering, Faculty of Science and Technology, Keio University Apr 1996 Professor, Department of System Design Engineering, Faculty of Science and Technology, Keio University Jul 2009 Dean, Faculty of Science and Technology, Keio University; Chairman, Graduate School Committee Jun 2015 Outside Director, DMG MORI Co., Ltd. Mar 2016 President, Japan Society for Precision Engineering Mar 2017 Outside Audit & Supervisory Board Member of the Company Apr 2017 Professor Emeritus, Keio University May 2017 Standing Director, Keio Gakuen Mar 2019 Outside Director of the Company (current) Aug 2021 Chairman, Keio Engineering Association (current) Oct 2023 Outside Audit & Supervisory Board Member, Sato Pharmaceutical Co., Ltd. (current)

Apr 1990 Joined Mercedes-Benz Japan Co., Ltd. Sep 1997 Joined The Boston Consulting Group K.K. Mar 2000 Joined Louis Vuitton Japan K.K. Jun 2002 COO, Celux Co., Ltd. Oct 2008 Founder and Representative Director, Dramatic Inc. May 2014 Founder and Representative Director, Ten to Four Co., Ltd. Jun 2015 Outside Director, Yaoko Co., Ltd. (current) Aug 2015 Director, Cogito Education and Management Co., Ltd. Jun 2018 Outside Director, Watabe Wedding Corporation Mar 2019 Outside Director of the Company (current) May 2020 Outside Director, Sanyo Shokai Ltd. Nov 2020 Outside Director, Circulation Inc. Nov 2020 Representative Director, BLOOM Inc. (current) Jun 2024 Outside Director (Audit and Supervisory Committee Member), Sparx Group Co., Ltd. (current) Nov 2025 Outside Director, Blue Zone Holdings Co., Ltd. (current)

Apr 1976 Joined Nomura Computer Systems Co., Ltd. (now Nomura Research Institute, Ltd.) Apr 2002 Executive Officer, Head of Information Technology Division Apr 2004 Managing Executive Officer, Head of Information Technology Division; Deputy Director, Research and Innovation Center Jun 2008 Representative Managing Executive Officer, in charge of Business Divisions Apr 2010 President and Representative Director Apr 2015 Chairman, President and Representative Director Apr 2016 Chairman and Director Jun 2019 Director Jun 2021 Special Advisor (current) Jun 2021 Director, Leading Skill Test Co., Ltd. (current) Mar 2022 Outside Director of the Company (current) Jul 2022 Member, Public Interest Oversight Committee, PwC Arata LLC (now PwC Japan LLC) Jun 2023 Outside Director, Seiko Epson Corporation (current) Jul 2025 Independent Non-Executive Director (INE), Monitoring Board, PwC Japan LLC (current)

Apr 1979 Joined Mitsui & Co., Ltd. Apr 2010 Executive Officer, Mitsui & Co., Ltd. Apr 2012 Managing Executive Officer, Mitsui & Co., Ltd. Apr 2014 Senior Managing Executive Officer, Mitsui & Co., Ltd. Jun 2014 Representative Director, Senior Managing Executive Officer, Mitsui & Co., Ltd. Apr 2017 Representative Director, Executive Vice President Executive Officer, Mitsui & Co., Ltd. Apr 2018 Director, Mitsui & Co., Ltd. Jun 2018 Adviser, Mitsui & Co., Ltd. Apr 2019 Executive Vice President Executive Officer, Valqua, Ltd. Jun 2019 Representative Director, President and COO, Valqua, Ltd. Apr 2020 Outside Director, Tosoh Corporation (current) Jun 2024 Vice Chairman and Director, Valqua, Ltd. Mar 2025 Outside Director of the Company (current)

Apr 1986 Joined the Company Jul 2011 President, MITSUBISHI PENCIL KOREA SALES CO., LTD. Apr 2016 General Manager, Overseas Sales Planning Department Mar 2022 Full-time Audit & Supervisory Board Member of the Company (current)

Apr 1987 Joined the Company Apr 2015 Managing Director, Mitsubishi Pencil Hokkaido Sales Co., Ltd. Jul 2015 Representative Director, President, Mitsubishi Pencil Hokkaido Sales Co., Ltd. Aug 2018 Managing Director, Mitsubishi Pencil Tokyo Sales Co., Ltd. Jul 2020 Representative Director, President, Mitsubishi Pencil Hokkaido Sales Co., Ltd. Jul 2021 Representative Director, President, Mitsubishi Pencil Tokyo Sales Co., Ltd. Mar 2024 Full-time Audit & Supervisory Board Member of the Company (current)

Oct 1976 Joined Chuo Accounting Firm Sep 1979 Registered as Certified Public Accountant May 1990 Audit & Supervisory Board Member, Kakiyasu Honten Co., Ltd. Sep 1990 Representative Partner, Taiyo Audit Corporation (now Taiyo LLC) Jun 1997 Outside Audit & Supervisory Board Member, Kakiyasu Honten Co., Ltd. (current) Jul 2000 Chief Representative Partner, Taiyo Audit Corporation Apr 2005 Professor, Graduate School, Aoyama Gakuin University Apr 2010 Visiting Professor, Graduate School, Aoyama Gakuin University Jun 2014 Outside Audit & Supervisory Board Member, Kikkoman Corporation (current) Jul 2014 Chairman and Representative Partner, Taiyo ASG LLC (now Taiyo LLC) Mar 2017 Outside Audit & Supervisory Board Member of the Company (current) Jun 2023 Outside Director (Audit Committee Member), SOMPO Holdings, Inc. (current) Jul 2023 Chairman, Taiyo LLC (current)

Apr 1988 Joined The Bank of Yokohama, Ltd. Apr 2016 Executive Officer; Branch Manager, Yokosuka Branch; Head of Yokosuka Block Sales Division, The Bank of Yokohama, Ltd. Apr 2018 Executive Officer, Concordia Financial Group, Ltd. (now Yokohama Financial Group, Inc.) Apr 2018 Executive Officer; Deputy Head of Sales Division, The Bank of Yokohama, Ltd. Apr 2019 Executive Officer; Head of Sales Division, The Bank of Yokohama, Ltd. Jun 2019 Director and Executive Officer; Head of Sales Division, The Bank of Yokohama, Ltd. Jun 2020 Director, Concordia Financial Group, Ltd. (now Yokohama Financial Group, Inc.) Apr 2021 Director and Managing Executive Officer, The Bank of Yokohama, Ltd. Apr 2023 Managing Executive Officer, TBK Co., Ltd. Jun 2023 Director and Managing Executive Officer, TBK Co., Ltd. Jun 2024 Representative Director, President, Yokohama Shinko Co., Ltd. (current) Mar 2025 Outside Audit & Supervisory Board Member of the Company (current)