Mar 1985 Joined Mitsui Petrochemical Industries, Ltd. (now Mitsui Chemicals, Inc.) Apr 2019 Executive Officer, Mitsui Chemicals, Inc. Apr 2019 Representative Director, President, Prime Polymer Co., Ltd. Apr 2024 Adviser, Mitsui Chemicals, Inc. Apr 2024 Adviser to the Company Jun 2024 Assumed office as Representative Director, President of the Company (current)

Apr 1979 Joined Mitsui & Co., Ltd. May 2007 General Manager, Western Japan Chemicals Business Division, Functional Chemicals Division, Mitsui & Co., Ltd. May 2010 Functional Chemicals Division, Mitsui & Co., Ltd. Jun 2013 Director, Executive Vice President of the Company Sep 2013 Representative Director, President of the Company Sep 2013 Assumed office as Head of Overseas Division (current) Oct 2013 Chairman, Tenshō Plastics (Changzhou) Co., Ltd. (current) Oct 2013 Representative Director, President, Tenshō America Corporation (now Sanko America Corporation) Jun 2024 Assumed office as Chairman of the Board of the Company (current)

May 2016 Joined the Company Jun 2017 Executive Officer, Deputy Head of Sales Division of the Company Jun 2018 Assumed office as Head of Sales Division of the Company (current) Jun 2018 Assumed office as Director of the Company (current)

Oct 2016 Joined the Company Jul 2019 Assumed office as Executive Officer of the Company Jul 2019 Assumed office as Head of Administration Division of the Company Jun 2020 Assumed office as Director of the Company (current)

Apr 2008 Joined Mori Building Co., Ltd. Jul 2015 Joined Sanko Real Estate Co., Ltd. Jun 2016 Senior Managing Director, Sanko Real Estate Co., Ltd. Jun 2017 Assumed office as Director of the Company (current) Aug 2022 Assumed office as Vice President and Director, Sanko Co., Ltd. (current) Aug 2022 Assumed office as Vice President, Representative Director, Sanko Real Estate Co., Ltd. (current)

Apr 1974 Joined Itochu Corporation May 2004 Regional Representative, East ASEAN, Itochu Corporation Jun 2006 Representative Director, President, Itochu Plastics Inc. Jun 2015 Adviser, Itochu Plastics Inc. Jun 2016 Assumed office as Director of the Company (current)

Oct 1998 Passed the National Bar Examination Oct 2000 Registered as an attorney-at-law Oct 2000 Joined Kayabacho Sogo Law Office Jun 2005 Audit & Supervisory Board Member of the Company Jun 2014 Assumed office as Director of the Company (current)

Apr 1984 Joined The Taiyo Kobe Bank, Ltd. (now Sumitomo Mitsui Banking Corporation) Oct 2010 Deputy General Manager, East Japan Business Support Plaza Department, Sumitomo Mitsui Banking Corporation Jun 2019 Director, Executive Officer, Head of Group Strategy Office and General Manager, Planning Department, Yoko Building ME Co., Ltd. Jun 2020 Audit & Supervisory Board Member, Yoei Co., Ltd. Jun 2023 Assumed office as Full-time Audit & Supervisory Board Member of the Company (current)

Apr 1976 Joined Hoya Glass Works, Ltd. Mar 2001 General Manager, Accounting Department, Atotech Japan K.K. Aug 2009 Joined the Company Apr 2010 Executive Officer of the Company, seconded to Tenshō Poland Corporation Sp. z o.o. Feb 2013 Executive Officer, Overseas Business Division of the Company Jun 2013 Assumed office as Full-time Audit & Supervisory Board Member of the Company (current)

Apr 1981 Joined Sanko Co., Ltd. Aug 2005 Director, Sanko Co., Ltd. Jun 2008 General Manager, Manufacturing Division, Sanko Co., Ltd. Jun 2010 Assumed office as Audit & Supervisory Board Member of the Company (current) Jun 2014 Senior Managing Director, Sanko Co., Ltd. Jun 2025 Assumed office as Audit & Supervisory Board Member, Sanko Co., Ltd. (current)