Oct 2003 Joined Mass Mutual Life Insurance Co., Ltd. (now Nissay Wellness Life Insurance Co., Ltd.) Jan 2006 Appointed Senior Managing Director of the Company Sep 2012 Resigned as Senior Managing Director Apr 2013 Appointed Senior Managing Director of the Company Oct 2014 Appointed Representative Director, President of the Company Oct 2019 Appointed Representative Director, President of Yuka Engineering Co., Ltd. (current) Jan 2021 Appointed Representative Director, President of Kaiko Co., Ltd. Dec 2022 Appointed Chairman of the Board of Kaiko Co., Ltd. Nov 2024 Appointed Representative Director, President of Kaiko Co., Ltd. Dec 2025 Appointed Representative Director, President, CEO of the Company (current)

Mar 2001 Joined the Company Apr 2004 Manager, Manufacturing Section of the Company Oct 2014 Deputy Plant Manager of the Company Oct 2015 Appointed Director, General Manager of Manufacturing Division and Plant Manager of the Company Oct 2019 Appointed Director of Yuka Engineering Co., Ltd. Jan 2021 Appointed Director of Kaiko Co., Ltd. Dec 2022 Appointed Senior Managing Director, General Manager of Manufacturing Division and Plant Manager of the Company Nov 2024 Appointed Director of Kaiko Co., Ltd. Dec 2025 Appointed Director, Senior Managing Executive Officer, General Manager of Manufacturing Division and Plant Manager, COO of the Company (current)

Apr 1983 Joined NOF Corporation (formerly Nippon Oil & Fats Co., Ltd.) Jun 2010 General Manager of Chemical Products Sales Division and PB Unit Manager, Osaka Branch of NOF Corporation Oct 2012 General Manager of Chemical Products Sales Division, Osaka Branch, and Group Leader, Chemical Products Sales Group, Fukuoka Branch of NOF Corporation Jun 2013 Joined Shincol Chemical Terminal Co., Ltd., General Manager of Sales Division Apr 2017 General Manager of Quality and Environment Division of Shincol Chemical Terminal Co., Ltd. Feb 2021 Joined the Company, General Manager of Technical Sales Division Dec 2022 Appointed Director, General Manager of Technical Sales Division of the Company Nov 2024 Appointed Director of Kaiko Co., Ltd. Dec 2025 Appointed Director, Managing Executive Officer, General Manager of Technical Sales Division of the Company (current)

May 2006 General Manager of Administration, H.O.C Co., Ltd. Apr 2008 General Manager of Administration, NextJoy Co., Ltd. Apr 2012 General Manager of General Affairs Department, Administration Division, Pion Co., Ltd. (now J Communication Co., Ltd.) Apr 2013 General Manager of General Affairs and Finance & Accounting Department, Administration Division, J Communication Co., Ltd. Apr 2015 General Manager of Administration Division, J Communication Co., Ltd. Apr 2016 General Manager of Administration Division, I-Flag Co., Ltd. Apr 2023 CEO, Cornerstone Investments, US Inc (current) Feb 2024 Appointed Representative Director, LR Co., Ltd. (current) Jun 2025 Appointed Outside Director, Hiraga Co., Ltd. (current) Oct 2025 Appointed Representative Director, Snowball Capital Co., Ltd. (current) Dec 2025 Appointed Outside Director of the Company (current)

Apr 1980 Joined Daiwa Bank, Ltd. (now Resona Bank, Ltd.) Apr 1999 Deputy Branch Manager, Midosuji Branch, Resona Bank, Ltd. Jun 2002 Appointed Director of DACS Co., Ltd. Dec 2003 General Manager, Sales Division III, Umeda Branch, Resona Bank, Ltd. Jul 2008 Senior Auditor, Internal Audit Department, Resona Bank, Ltd. Jul 2016 Senior Master Auditor, Internal Audit Department, Resona Bank, Ltd. Jun 2024 Appointed Audit & Supervisory Board Member of DACS Co., Ltd. Dec 2025 Appointed Outside Director (Audit and Supervisory Committee Member) of the Company (current)

Oct 2002 Registered as Attorney-at-Law (Osaka Bar Association) Oct 2002 Joined Kitahama Law Office (now Kitahama Partners) Dec 2008 Registered as Certified Tax Accountant (Higashi Branch, Kinki Federation of Tax Accountants) Jan 2009 Opened Hashimori & Hatano Law and Accounting Office (current) Jun 2016 Outside Director, Daisen System Service Co., Ltd. Dec 2016 Appointed Outside Director of the Company Sep 2021 Partner, Hashimori Partners Tax Accountants Corporation (current) Dec 2025 Appointed Outside Director (Audit and Supervisory Committee Member) of the Company (current)

Apr 1990 Associate Professor, Faculty of Engineering, Osaka University Apr 2004 Professor, Faculty of Engineering, Osaka Institute of Technology Apr 2016 Specially Appointed Professor, Osaka Institute of Technology Dec 2020 Appointed Audit & Supervisory Board Member of the Company Dec 2025 Appointed Outside Director (Audit and Supervisory Committee Member) of the Company (current)

Apr 2001 Joined Intec Inc. Dec 2008 Joined Azusa Audit Corporation (currently Azusa Audit LLC) Oct 2012 Registered as Certified Public Accountant (Japanese Institute of Certified Public Accountants) Apr 2019 Opened Miyauchi CPA Office (current) Dec 2025 Appointed Outside Director (Audit and Supervisory Committee Member) of the Company (current)