Organization Chart
Board of Directors
| Director, Group Chairman | ||
|---|---|---|
| Representative Director, Group CEO | ||
| Representative Director, Senior Executive Officer | Human Resource Dept., Business Portfolio Management Dept., Sustainability Initiative Dept. | |
| Representative Director, Senior Executive Officer | Taisuke Matsuoka | Corporate Planning Dept., Finance Dept. |
| Director | Shigeki Iwane | |
| Independent Outside Director | ||
| Independent Outside Director | ||
| Independent Outside Director | Takako Suzuki | |
| Director, Full-time Audit and Supervisory Committee Member | Takayuki Uematsu | (Concurrently serves as Part-Time Auditor of Cosmo Energy Exploration & Production Co., Ltd., Cosmo Oil Co., Ltd. and Cosmo Oil Marketing Co., Ltd.) |
| Independent Outside Director, Audit and Supervisory Committee Member | ||
| Independent Outside Director, Audit and Supervisory Committee Member | ||
| Independent Outside Director, Audit and Supervisory Committee Member | Toshihiro Kuriyama | |
| Senior Executive Officer, CDO | Noriko Rzonca | Corporate DX Strategy Dept., Corporate Communication Dept., IT Initiative Dept. |
| Senior Executive Officer | Hiroaki Ohtsuka | Power Business Management Dept., New Energy Business Management Dept. |
| Senior Executive Officer | Tomoki Iwai | Accounting Dept., Legal & General Affairs Dept. |
| Executive Officer | Hideyuki Wakao | General Manager, Internal Auditing Office/ Substitute Director, Audit and Supervisory Committee Member |
*Internal Auditing Office and Secretariat Office are under control of the Representative Director, Group CEO.
Effective June 26, 2025
Biography
Director, Group Chairman
Hiroshi Kiriyama
| April 1979 | Joined Daikyo Oil Co., Ltd. |
|---|---|
| June 2013 | Director, Senior Executive Officer, Cosmo Oil Co., Ltd. |
| October 2015 | Director, Senior Managing Executive Officer of the Company |
| June 2016 | Representative Director, Executive Vice President |
| June 2017 | Representative Director, Group CEO |
| April 2023 | Representative Director Group Chairman |
| June 2025 | Director, Group Chairman (current position） |
Representative Director, Group CEO
Shigeru Yamada
| April 1988 | Joined Cosmo Oil Co., Ltd. |
|---|---|
| June 2015 | General Manager, Supply Dept., |
| April 2018 | Executive Officer, General Manager of Corporate Planning Dept. of the Company |
| April 2020 | Senior Executive Officer |
| June 2020 | Director, Senior Executive Officer |
| April 2023 | Representative Director, Group CEO (current position) |
Representative Director, Senior Executive Officer
Junko Takeda
| April 1990 | Joined Cosmo Oil Co., Ltd. |
|---|---|
| October 2015 | General Manager, Human Resource and General Affairs Dept. |
| April 2017 | General Manager, Planning & Management Dept. |
| April 2019 | Director, Executive Officer |
| April 2020 | Executive Officer, General Manager, Human Resource Dept. of the Company |
| April 2022 | Senior Executive Officer |
| June 2022 | Director, Senior Executive Officer |
| June 2025 | Representative Director, Senior Executive Officer (current position） |
Representative Director, Senior Executive Officer
Taisuke Matsuoka
| April 1993 | Joined Cosmo Oil Co., Ltd. |
|---|---|
| April 2018 | General Manager, Supply Dept. |
| April 2021 | Director, Executive Officer |
| April 2023 | Senior Executive Officer of the Company |
| June 2024 | Director, Senior Executive Officer |
| June 2025 | Representative Director, Senior Executive Officer (current position） |
Director
Shigeki Iwane
| April 1976 | Joined The Kansai Electric Power Company, Incorporated |
|---|---|
| June 2007 | Executive Officer, General Manager, Planning Office |
| June 2010 | Managing Director |
| April 2012 | Representative Director, Vice President |
| June 2013 | Representative Director, Executive Vice President |
| June 2016 | Representative Director, President Outside Director, Mitsubishi Tanabe Pharma Corporation |
| May 2019 | Chairman, the Federation of Electric Power Companies of Japan |
| June 2019 | Outside Director, Television Osaka, Inc. |
| April 2021 | Senior Advisor, YUASA M&B, Co., Ltd. (current position) |
| December 2023 | Advisor, Iwatani Corporation (current position) |
| June 2024 | Director (current position) |
Independent Outside Director
Ryuko Inoue
| April 1981 | Joined Ministry of Agriculture, Forestry and Fisheries, MAFF |
|---|---|
| January 2003 | Minister, Embassy of Japan in Italy, Permanent Representative of Japan to Food and Agriculture Organization of the United Nations (FAO) and World Food Programme (WFP) |
| April 2016 | Deputy Director - General, Agriculture, Forestry and Fisheries Research Council, MAFF |
| July 2017 | Retirement, MAFF |
| November 2017 | Registered as attorney-at-law, Of Counsel, Atsumi & Sakai (current position) |
| June 2019 | Outside Director, Nippon Steel Trading Corporation |
| June 2021 | Independent Outside Director of the Company (current position) |
| June 2023 | Independent Director, NS United Kaiun Kaisha, Ltd. |
| January 2024 | Outside Director, DIGITAL GRID Corporation (current position) |
Independent Outside Director
Takuya Kurita
| April 1984 | Joined Ministry of Construction (currently Ministry of Land, Infrastructure, Transport and Tourism) |
|---|---|
| September 2007 | Counsellor, Cabinet Secretariat |
| July 2009 | Director, Urban Renewal Promotion Division, Ministry of Land, Infrastructure, Transport and Tourism (MLIT) |
| July 2011 | Counselor, the Headquarters for the Reconstruction from the Great East Japan Earthquake |
| February 2012 | Counselor, Reconstruction Agency |
| August 2013 | Director, Personnel Division, MLIT |
| July 2015 | Director-General, City Bureau, MLIT |
| July 2018 | Director-General, Policy Bureau, MLIT |
| July 2020 | Vice-Minister, Land, Infrastructure, Transport and Tourism, MLIT |
| July 2021 | Resigned from MLIT |
| October 2021 | Corporate Advisor, Sumitomo Mitsui Trust Bank, Limited (current position) |
| June 2022 | Independent Outside Director of the Company (current position) |
Independent Outside Director
Takako Suzuki
| April 1984 | Joined Nissan Motor Co., Ltd. |
|---|---|
| August 2001 | Joined LVJ Group Co., Ltd. (now Louis Vuitton Japan Co., Ltd.) |
| January 2010 | Joined S.T. CORPORATION |
| April 2013 | Director, President & CEO |
| March 2020 | Outside Director, TRUSCO Nakayama Corporation |
| June 2021 | Chairman of the Board, President & CEO, S.T. CORPORATION |
| September 2022 | External Director, KING JIM CO., LTD. |
| June 2023 | Chairman, S.T. CORPORATION (current position) |
| June 2024 | Independent Outside Director of the Company (current position) |
| June 2024 | Outside Director, FUJIFILM Holdings Corporation (current position) |
| June 2025 | Outside Director, Calbee, Inc. (Current position) |
Director, Full-time Audit and Supervisory Committee Member
Takayuki Uematsu
| November 1992 | Joined Cosmo Oil Co., Ltd. |
|---|---|
| June 2015 | General Manager of Finance Dept. |
| October 2015 | General Manager of Finance Dept. of the Company |
| June 2016 | Executive Officer, General Manager of Finance Dept. |
| April 2018 | Senior Executive Officer |
| June 2018 | Director, Senior Executive Officer |
| June 2020 | Representative Director, Senior Executive Officer |
| April 2021 | Representative Director, Senior Managing Executive Officer |
| April 2024 | Director |
| June 2024 | Director, Full-time Audit and Supervisory Committee Member (current position) |
Independent Outside Director, Audit and Supervisory Committee Member
Yasuko Takayama
| April 1980 | Joined Shiseido Co., Ltd |
|---|---|
| April 2009 | General Manager, Social Affairs and Consumer Relations Department |
| April 2010 | General Manager, Corporate Social Responsibility Department |
| June 2011 | Full-time Audit and Supervisory Board Member |
| June 2015 | Outside Director, Nippon Soda Co., Ltd. Outside Director, The Chiba Bank, Ltd. (current position) |
| June 2016 | Outside Audit & Supervisory Board Member, Mitsubishi Corporation |
| June 2017 | Outside Audit & Supervisory Board Member, Yokogawa Electric Corporation |
| June 2019 | Independent Outside Director, Audit and Supervisory Committee Member (current position) |
| June 2024 | Outside Director, Yokogawa Electric Corporation |
Independent Outside Director, Audit and Supervisory Committee Member
Keiichi Asai
| April 1978 | Joined Mitsubishi Corporation |
|---|---|
| April 2009 | Executive Officer, Head of CEO office, Energy Group |
| April 2013 | Director and Vice President, Lithium Energy Japan |
| September 2014 | Representative Director, President and Chief Executive Officer, KH Neochem Co., Ltd. |
| June 2021 | Independent Outside Director, Audit and Supervisory Committee Member (current position) |
| June 2022 | Outside Director, Sun Frontier Fudousan Co., Ltd. (current position) |
Independent Outside Director, Audit and Supervisory Committee Member
Toshihiro Kuriyama
| April 1980 | Joined ALPS ELECTRIC CO., LTD. (now ALPS ALPINE CO., LTD.) |
|---|---|
| June 2004 | Director, General Manager, Magnetic Devices Division |
| April 2007 | Director, General Manager, Business Development Headquarters |
| April 2009 | Director, General Manager, Engineering Headquarters and Quality Management Executive |
| June 2011 | Managing Director |
| June 2012 | Representative Director, President |
| January 2019 | Representative Director, President |
| June 2023 | Representative Director, Chairman |
| June 2024 | Independent Outside Director, Audit and Supervisory Committee Member (current position) |