Jul 1955 Founded Shikoku Chemical Laboratory (now SK Kaken Co., Ltd.) Apr 1958 Established the Company; assumed office as Representative Director and President Aug 1981 Assumed office as Representative Director and President, SKK (S) PTE. LTD. May 1983 Assumed office as Representative Director and President, SK KAKEN (M) SDN. BHD. Sep 1984 Assumed office as Representative Director and President, SKK (H'K) CO., LTD. Mar 1992 Assumed office as Representative Director and President, SKK CHEMICAL (M) SDN. BHD. Dec 2002 Assumed office as Representative Director and President, SK KAKEN (THAILAND) CO., LTD. Feb 2010 Assumed office as Representative Director and President, SKK CHEMICAL (THAILAND) CO., LTD. (current) Apr 2017 Assumed office as Representative Director and Chairman of the Company Jun 2025 Assumed office as Director and Chairman of the Company (current)

May 1994 Joined the Company Jun 1999 Assumed office as Director; General Manager, General Planning Department Jun 2000 Assumed office as Representative Director and President, SKK (S) PTE. LTD. (current) Jun 2000 Assumed office as Representative Director and President, SKK (H'K) CO., LTD. (current) Jul 2000 Assumed office as Representative Director and President, SK KAKEN (M) SDN. BHD. (current); SKK CHEMICAL (M) SDN. BHD. (current); SK COATINGS SDN. BHD. (current) May 2001 Assumed office as Representative Director and President, H.K. SHIKOKU CO., LTD. (current) Sep 2001 Assumed office as Representative Director and President, SIKOKUKAKEN (SHANGHAI) CO., LTD. Apr 2003 Assumed office as Managing Director; General Manager, Tokyo Branch and Eastern Japan Sales Division Apr 2017 Assumed office as Representative Director and President of the Company (current)

Apr 1977 Joined the Company May 1987 General Manager, Nagoya Plant Mar 1991 Assumed office as Director; General Manager, Nagoya Plant Oct 1995 Assumed office as Senior Managing Director (current)

Apr 1978 Joined the Company Apr 2004 General Manager, Nagoya Branch Oct 2017 General Manager, Business Division Jun 2018 Assumed office as Director; General Manager, Business Division Apr 2023 Assumed office as Managing Director; General Manager, Business Division (current)

Apr 1991 Joined the Company Apr 2002 Deputy General Manager, Sales Division Sep 2002 Deputy General Manager, Sales Division and Deputy General Manager, Human Resources Department Apr 2003 General Manager, Sales Division and General Manager, Human Resources Department Jun 2003 Assumed office as Director (current); General Manager, Sales Management Department and General Manager, Human Resources Department Jun 2006 General Manager, Sales Management Division and General Manager, General Affairs and Human Resources Department Apr 2021 General Manager, General Affairs Department and General Manager, Human Resources Department (current)

Apr 1982 Joined the Company Apr 1998 General Manager, Nagoya Branch Jun 2004 Assumed office as Director; General Manager, Tokyo Branch (current)

Apr 1981 Joined the Company Apr 2006 Deputy General Manager, Administration, Tokyo Branch Jun 2014 Acting General Manager, Accounting Department Apr 2017 General Manager, Accounting Department Jun 2017 Assumed office as Director; General Manager, Accounting Department (current)

Apr 1988 Joined the Company Apr 2010 General Manager, Otone Plant Apr 2021 General Manager, Production Division Jun 2022 Assumed office as Director; General Manager, Production Division (current)

Apr 1984 Joined the Company Apr 2010 Deputy General Manager, International Business Division Apr 2018 General Manager, International Business Division Apr 2023 Head, International Business Division Jun 2023 Assumed office as Director; General Manager, International Business Division (current)

Apr 1970 Joined The Osaka Bank, Ltd. (now Kansai Mirai Bank, Limited) Jun 1999 General Manager, Funds and Securities Department, the same bank Jun 2003 Full-time Audit & Supervisory Board Member, Kinki Osaka Credit Guarantee Co., Ltd. (now Kansai Mirai Guarantee Co., Ltd.) Jul 2008 General Manager, Administration Division, Kasugai Co., Ltd. Jan 2013 General Manager, Group Management Planning Office, Withsoft Co., Ltd. (now Kaitechnology Co., Ltd.) Feb 2014 General Manager, Planning Department, Hourishi Sangyo Co., Ltd. Jun 2015 Assumed office as Audit & Supervisory Board Member of the Company Oct 2016 Assumed office as Full-time Audit & Supervisory Board Member of the Company Jun 2023 Assumed office as Director (Audit and Supervisory Committee Member) of the Company (current)

Apr 1977 Joined The Daiwa Bank, Ltd. (now Resona Bank, Limited) Mar 1999 Branch Manager, Kuzuha Branch, the same bank Apr 2004 Executive Officer in charge of Finance, Matsuroku Co., Ltd. Jun 2017 Assumed office as Audit & Supervisory Board Member of the Company Jun 2023 Assumed office as Director (Audit and Supervisory Committee Member) of the Company (current)

Apr 1978 Joined Settsu Shinkin Bank (now Kita-Osaka Shinkin Bank) Apr 2015 General Manager, Head Office Sales Department, Kita-Osaka Shinkin Bank Jun 2015 Executive Officer; General Manager, Head Office Sales Department, the same bank Jun 2016 Director; General Manager, Administration Department, the same bank Jun 2019 Managing Director; General Manager, Administration Department, the same bank Jun 2021 Managing Director, the same bank Jun 2022 Assumed office as Director of the Company Jun 2023 Assumed office as Director (Audit and Supervisory Committee Member) of the Company (current)

Apr 1979 Joined The Kansai Sogo Bank (now Kansai Mirai Bank, Limited) Apr 2008 Executive Officer, Kansai Urban Bank, Ltd. (now Kansai Mirai Bank, Limited) Apr 2011 Managing Executive Officer, the same bank Jun 2012 Assumed office as Director; Managing Executive Officer, the same bank Apr 2014 Director and Senior Managing Executive Officer, the same bank Apr 2019 Senior Managing Executive Officer, Kansai Mirai Bank, Limited Apr 2020 Outside Audit & Supervisory Board Member, Kansai Mirai Guarantee Co., Ltd. and Biwako Credit Guarantee Co., Ltd. Jun 2022 Assumed office as Audit & Supervisory Board Member of the Company Jun 2023 Assumed office as Director (Audit and Supervisory Committee Member) of the Company (current)