Joined the Company Jul 1989 Head of Technology Development Dept., PS Business Division, the Company Apr 1994 Director of the Company; Deputy General Manager, PS Business Division Jun 1995 Vice President, PS Company Jul 1998 Managing Director of the Company Jul 2002 President, PS Company Apr 2003 Representative Director, President, Daiichi Components Co., Ltd. Aug 2006 Representative Director, President, DISCO Abrasive Systems, Ltd. Jun 2007 Chairman, DISCO HI-TEC TAIWAN CO., LTD. Aug 2007 Representative Director, President of the Company; General Manager, Technology Development Headquarters Apr 2009 (General Manager, Technology Development Headquarters: current) Representative Director, President, DISCO Manufacturing Corporation May 2021 (current) Director, Representative Executive Officer, President of the Company Jun 2022 (current) General Manager, Nagano Plant of the Company Apr 2026 (current)

Joined the Company Apr 1982 General Manager, Overseas Division, PS Company Jul 2004 Executive Officer; General Manager, Overseas Sales Dept., PS Company Jul 2006 Managing Executive Officer; General Manager, Sales Headquarters and Service Dept., the Company Jun 2011 Senior Managing Executive Officer; General Manager, Sales Headquarters and Overseas Sales Dept., the Company Jun 2015 Chairman and Representative Director, DISCO HI-TEC AMERICA, INC. Jul 2015 (current) Chairman and Representative Director, DISCO HI-TEC (SINGAPORE) PTE LTD Jul 2015 (current) General Manager, Customer Engineering Dept., Sales Headquarters, the Company Aug 2017 Senior Managing Director; General Manager, Sales Headquarters, the Company Jun 2019 (current) General Manager, Overseas Sales Dept., the Company Jun 2021 Chairman, DISCO HI-TEC CHINA CO., LTD. Jun 2021 (current) Chairman, DISCO HI-TEC TAIWAN CO., LTD. Jun 2021 (current) Representative Director, DISCO HI-TEC KOREA Corporation Jun 2021 (current) Director; Executive Vice President, the Company Jun 2022 Director, Representative Executive Vice President, the Company Jun 2023 (current)

Joined the Company Apr 1977 General Manager, Management Administration Dept., Management Administration Headquarters, the Company Feb 1994 Director of the Company; Deputy General Manager, Management Support Headquarters Jun 1995 General Manager, Management Information Dept., Management Support Headquarters Jun 1995 Acting General Manager, Support Headquarters, the Company Jul 1997 General Manager, General Affairs Dept., Support Headquarters, the Company Jul 1997 General Manager, Support Headquarters, the Company Apr 1999 (current) General Manager, Accounting Dept., Support Headquarters, the Company Aug 2002 Managing Director of the Company Jun 2011 General Manager, Human Resources Dept., Support Headquarters, the Company Sep 2011 General Manager, General Affairs Dept., Support Headquarters, the Company Jan 2018 Director; Managing Executive Officer, the Company Jun 2022 (current)

Joined Sumitomo Trust & Banking Co., Ltd. (now Sumitomo Mitsui Trust Bank, Limited) Apr 1982 General Manager, Retail Sales Development Dept., Sumitomo Mitsui Trust Bank, Limited Jun 2006 General Manager, Asset Finance Dept., Sumitomo Mitsui Trust Bank, Limited Feb 2008 General Manager, Compliance Division, Sumitomo Mitsui Trust Bank, Limited May 2009 General Manager, Internal Audit Dept., Sumitomo Mitsui Trust Bank, Limited Apr 2011 General Manager, Internal Audit Dept., Sumitomo Mitsui Trust Holdings, Inc. (now Sumitomo Mitsui Trust Group, Inc.) Apr 2011 General Manager, Internal Audit Dept., Sumitomo Mitsui Trust Bank, Limited Apr 2012 General Manager, Internal Audit Dept., Sumitomo Mitsui Trust Holdings, Inc. Apr 2012 Executive Officer; General Manager, Internal Audit Dept., Sumitomo Mitsui Trust Bank, Limited Apr 2015 Executive Officer; General Manager, Internal Audit Dept., Sumitomo Mitsui Trust Holdings, Inc. Apr 2015 Full-time Outside Audit & Supervisory Board Member, Minebea Co., Ltd. (now MinebeaMitsumi Inc.) Jun 2015 Audit & Supervisory Board Member, the Company Jun 2019 Director of the Company Jun 2022 (current)

Joined Chase Manhattan Bank (now JPMorgan Chase Bank, N.A.) Apr 1982 Joined Morgan Stanley Securities Co., Ltd. (now Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.), Equity Research Dept. Apr 1988 Managing Director, Morgan Stanley Securities Co., Ltd. Dec 2001 Senior Advisor, Investment Banking Division, Morgan Stanley Securities Co., Ltd. Oct 2004 Outside Director, Alps Alpine Co., Ltd. Jun 2020 (current) Director of the Company Jun 2022 (current)

Joined Recruit Co., Ltd. Apr 1989 Left Recruit Co., Ltd. Mar 1993 Professor, Department of Mechanical Engineering, Faculty of Science and Technology, Keio University Apr 2008 (current) President, The Japan Society for Aeronautical and Space Sciences Apr 2020 Director of the Company Jun 2023 (current)

Associate Professor, Graduate School of Engineering, The University of Tokyo Sep 2006 Associate Professor, Graduate School of Engineering, The University of Tokyo Apr 2007 Associate Professor, Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University Mar 2018 Professor, Department of Precision Engineering, Graduate School of Engineering, The University of Tokyo Apr 2020 (current) Director of the Company Jun 2024 (current)

Associate Professor, Columbia Business School Jan 1995 Associate Professor, Graduate School of International Corporate Strategy, Hitotsubashi University Oct 2001 Professor, Graduate School of International Corporate Strategy, Hitotsubashi University Jan 2004 Outside Director, Eisai Co., Ltd. Jun 2009 Dean, Graduate School of International Corporate Strategy, Hitotsubashi University Apr 2010 Professor, Graduate School of Commerce and Management, Hitotsubashi University Apr 2012 Outside Director, Mitsubishi Heavy Industries, Ltd. Jun 2012 Outside Director, Japan Exchange Group, Inc. Jun 2014 Professor, Graduate School of Business Administration, Hitotsubashi University Apr 2018 Outside Director, Sumitomo Electric Industries, Ltd. Jun 2018 Outside Director, Asahi Group Holdings, Ltd. Mar 2019 Outside Director, NEC Corporation Jun 2021 Professor Emeritus, Hitotsubashi University Apr 2022 Specially Appointed Professor, Faculty of Business Administration, Rikkyo University Apr 2022 (current) Outside Director, NGK SPARK PLUG CO., LTD. Jun 2022 (current) Outside Director, University of Tokyo Edge Capital Partners Co., Ltd. (UTEC) Jan 2023 (current) Part-time Executive Director, Hokkaido University Apr 2024 (current) Outside Director, Daiwa Securities Co., Ltd. Apr 2025 Outside Director, Yokogawa Electric Corporation Jun 2025 (current) Director of the Company (current) Outside Director, Daiwa Securities Group Inc. Jun 2026 (scheduled to assume office)

Joined The Sanwa Bank, Limited (now MUFG Bank, Ltd.) Apr 1984 Executive Officer, The Bank of Tokyo-Mitsubishi UFJ, Ltd. (now MUFG Bank, Ltd.) Jun 2010 Executive Officer, Mitsubishi UFJ Financial Group, Inc. Jun 2010 Managing Executive Officer, Mitsubishi UFJ Financial Group, Inc. May 2016 Managing Director, MUFG Bank, Ltd. Jun 2016 Director and Managing Executive Officer, MUFG Bank, Ltd. Jun 2017 Senior Managing Executive Officer, MUFG Bank, Ltd. May 2018 Representative Director, President, MST Insurance Services Co., Ltd. Jun 2019 Representative Director, President and CEO, MST Marsh Co., Ltd. Oct 2023 (current) Director of the Company Jun 2025 (current)

Joined Sumitomo Trust & Banking Co., Ltd. (now Sumitomo Mitsui Trust Bank, Limited) Apr 1987 Executive Officer; General Manager, Osaka Head Office Sales Dept. No. 2, Sumitomo Mitsui Trust Bank, Limited Apr 2016 Executive Officer; General Manager, Credit Examination Dept. No. 1, Sumitomo Mitsui Trust Bank, Limited Apr 2017 Managing Executive Officer, Sumitomo Mitsui Trust Bank, Limited Apr 2019 Chairman, Sumitomo Mitsui Trust Investment Co., Ltd. Apr 2024 Audit & Supervisory Board Member, Sumitomo Mitsui Trust Guarantee Co., Ltd. Apr 2025 (current) Director of the Company Jun 2026 (scheduled to assume office)