Idemitsu Kosan Co., Ltd. TSE:5019
Idemitsu Kosan : Notice of Change of Representative Director and Directors
Source: MarketScreener
May 12, 2026
Press Release
Company Name: Idemitsu Kosan Co., Ltd. |
Representative Director and President: Noriaki Sakai |
(Company Code: 5019, TSE Prime Market) |
Contact person: Shinko Sasaki, General Manager Investor Relations Office, Finance & Accounting Department |
Idemitsu Kosan Co., Ltd. ("Idemitsu Kosan") announces that it has decided to implement a change in its Representative Director and Directors as detailed below at a board meeting held on May 12, 2026. We expect that this proposal will be approved at the 111th annual shareholders meeting scheduled to be convened on June 24, 2026
Reason for Changes
For stronger management foundations
Change of Representative Directors
Name
New
Current
Shunichi Kito
Director, Chairman and Chairperson of the Board of the Directors
Representative Director and Chairman
Noriaki Sakai
Representative Director, President and Chief Executive Officer
Representative Director and President
Atsuhiko Hirano
Representative Director, Executive Vice President and Chief Operating Officer
Representative Director and Executive Vice President
Masahiko Sawa
Representative Director, Executive Vice President and Chief Strategy Officer
Representative Director and Executive Vice President
Change of Directors and Audit & Supervisory Board Member
Appointment
Takashi Sakata Director, Managing Executive Officer and Chief Financial Officer
Kazuma Ikeda Director, Managing Executive Officer and Chief Human Resources Officer Sumiko Takeuchi Outside Director
So Hirano Outside Director
Yoshitaka Onuma Audit & Supervisory Board Member
Retirement
Takeo Kikkawa Outside Director
Hidefumi Kodama Audit & Supervisory Board Member
Effective Date
June 24, 2026
End
【Reference】
Management of Idemitsu Kosan Co., Ltd. (Proposed on June 24, 2026)
＜Directors＞
Shunichi Kito | Director, Chairman and Chairperson of the Board of Directors |
Noriaki Sakai | Representative Director, President and Chief Executive Officer |
Atsuhiko Hirano | Representative Director, Executive Vice President and Chief Operating Officer |
Masahiko Sawa | Representative Director, Executive Vice President and Chief Strategy Officer Head of Safety & Environmental Protection Headquarters, Head of Quality Assurance Headquarters and Head of Carbon Neutral Transformation Strategic Headquarters |
Takashi Sakata | Director, Managing Executive Officer and Chief Financial Officer |
Kazuma Ikeda | Director, Managing Executive Officer and Chief Human Resources Officer |
Masakazu Idemitsu | Director (part-time) |
Kazunari Kubohara | Director (part-time) |
Jun Suzuki | Outside Director |
Shiori Nagata | Outside Director |
Mio Kashiwamura | Outside Director |
Sumiko Takeuchi | Outside Director |
So Hirano | Outside Director |
＜Audit & Supervisory Board Members＞
Nami Kitamura | Audit & Supervisory Board Member |
Yoshitaka Onuma | Audit & Supervisory Board Member |
Yumiko Ichige | Outside Audit & Supervisory Board Member |
Masahiko Tezuka | Outside Audit & Supervisory Board Member |
【Reference】
Brief Biography of the Candidates of the Directors
＜Directors＞
Name: Takashi Sakata Brief Biography:
Apr. 1990 | Joined Showa Shell Sekiyu K. K. ("Showa Shell") |
Sep. 2005 | Manager of Management Accounting Section, Accounting Department, Showa Shell |
Sep. 2008 | General Manager of Finance Department and Manager of Finance Section, Showa Shell |
Apr. 2009 | General Manager of Marketing and Sales Planning Department, Showa Shell |
Apr. 2011 | General Manager of Chugoku Branch, Showa Shell |
Mar. 2015 | Executive Officer and General Manager of Finance and Accounting Department, Showa Shell |
Mar. 2018 | Corporate Executive Officer, Chief Financial Officer, Public Affairs, Accounting, Finance and Financial Risk Management, Showa Shell |
Apr. 2019 | Senior Executive Officer, Procurement, and General Manager of Accounting Department, Idemitsu Kosan |
Jun. 2021 | Managing Director, Idemitsu International (Asia) Pte. Ltd. |
Jul. 2024 | Senior Executive Officer and General Manager of Finance and Accounting Department, Idemitsu Kosan |
Jul. 2025 | Managing Executive Officer and Chief Financial Officer, Financial Strategy (Current) |
Jun. 2026 | Director, Idemitsu Kosan (Proposed) |
Name: Kazuma Ikeda Brief Biography:
Apr. 1991 | Joined Idemitsu Kosan Co., Ltd. ("Idemitsu Kosan") |
Apr. 2019 | Deputy General Manager of Retail Marketing Department, Idemitsu Kosan |
Jul. 2021 | Representative Director and President, Idemitsu Retail Marketing Co., Ltd. |
Apr. 2023 | General Manager of Human Resources Department, Idemitsu Kosan |
Jul. 2024 | Executive Officer and General Manager of Human Resources Department, Idemitsu Kosan |
Jul. 2025 | Senior Executive Officer, Human Resources, and General Manager of Human Resources Department, Idemitsu Kosan (Current) |
Jun. 2026 | Director, Idemitsu Kosan (Proposed) |
＜Outside Directors＞
Name: Sumiko Takeuchi Brief Biography:
Apr. 1994 | Joined Tokyo Electric Power Company, Incorporated |
Jan. 2012 | Director and Senior Fellow of Specified Nonprofit Corporation, International Environment and Economiy Institute (Current) |
Apr. 2016 | Visiting Professor, Tsukuba University |
Apr. 2018 | Visiting Professor, Kansai University |
Oct. 2018 | Co-representative of U3 Innovations LLC (Current) |
Jun. 2019 | Outside Director of the Board of Japan Pulp and Paper Co., Ltd. (Current) |
Apr. 2020 | Specially Appointed Professor of Tohoku University (Current) |
Apr. 2021 | Advisor, Deloitte Tohmatsu Financial Advisory LLC |
Jul. 2022 | Outside Director of GRID INC. (Current) |
Jun. 2024 | Outside Director and Audit and Supervisory Committee Member of NIPPON STEEL CORPORATION (Current) |
Jun. 2026 | Outside Director, Idemitsu Kosan (Proposed) |
Name: So Hirano Brief Biography:
Apr. 2010 | Assistant Professor, Faculty of Economics, Seijo University |
Apr. 2013 | Associate Professor, Faculty of Economics, Seijo University |
Dec. 2014 | Temporary Committee Member of Industrial Structure Council, Ministry of Economy, Trade and Industry (METI) |
Oct. 2019 | Temporary Committee Member of Advisory Committee for Natural Resources and Energy, METI (Current) |
Apr. 2020 | Professor, Faculty of Economics, Seijo University (Current) |
Aug. 2020 | Chairman, The Study Group for the Advancement of Yokkaichi Complex (Current) |
Jun. 2026 | Outside Director, Idemitsu Kosan (Proposed) |
【Reference】
Brief Biography of the Candidate of the Audit & Supervisory Board Member
＜Audit & Supervisory Board Member＞ Name: Yoshitaka Onuma
Brief Biography:
Apr. 1988 | Joined Idemitsu Kosan Co., Ltd. ("Idemitsu Kosan") |
Jul. 2010 | Manager of SPS and PPS Group, Functional Materials Department, Idemitsu Kosan |
Dec. 2015 | Deputy General Manager of Accounting Department, Idemitsu Kosan |
Apr. 2019 | Deputy General Manager of Finance Department, and Corporate Pension Fund, Idemitsu Kosan |
Jul. 2020 | General Manager of Finance Department, Idemitsu Kosan |
Jul. 2022 | Executive Officer and General Manager of Finance and Accounting Department, Idemitsu Kosan |
Jul. 2024 | Executive Officer, Business Investment Promotion and General Manager of Business Investment Office, Idemitsu Kosan (Current) |
Jun. 2026 | Audit & Supervisory Board Member, Idemitsu Kosan (Proposed) |