Idemitsu Kosan Co Ltd - Company Profile
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The following section provides information on Idemitsu Kosan Co Ltd’s senior management, executives, CEO and key decision makers and their roles in the organization. For more insight into Idemitsu Kosan Co Ltd's management and employees, unlock the full data with our company analytics monitoring tool.
Executives
Shunichi Kito
Chairman Executive BoardMr. Shunichi Kito has been the Chairman of the company since 2025. Prior to this, he served as the Chief Executive Officer and President of the company from 2022 to 2025. He also served as the Executive Vice President and Director of the company. Previously, he also served as the Managing Director of the company from 2014 to 2017. Mr. Kito also worked as the Director, Managing Executive Officer, and General Manager of the Accounting Department at the company from 2013 to 2014. Earlier, he also worked as the Executive Officer and General Manager of the Accounting Department at the company from 2011 to 2013. He also held the position of Deputy General Manager of the Accounting Department at the company from 2008 to 2011. Before this, he also served as the Deputy General Manager of the Personnel Department of the company from 2005 to 2008.
Noriaki Sakai
President; Director; Chief Executive Officer Executive BoardMr. Noriaki Sakai has been the Chief Executive Officer, President, and Director of the company since 2025. Prior to this, he served as a Director and Executive Vice President of the company from 2023 to 2025. He was also a Director and Managing Executive Officer of the company from 2021 to 2022. Mr. Sakai also worked as the Senior Executive Officer and Chief Financial Officer of the company from 2020 to 2021. Before this, he was also the Executive Officer and General Manager of the Finance Department at the company from 2019 to 2020. He also worked as the Executive Officer and General Manager of the Accounting Department at the company from 2018 to 2019. Mr. Sakai also held the position of General Manager of the Accounting Department at the company from 2017 to 2018. Preceding this, he was also the Deputy General Manager of the Accounting Department at the company from 2015 to 2017. Mr. Sakai was also the Deputy General Manager of the Human Resources Department, Health Insurance Union President, and Corporate Pension Fund President at the company from 2012 to 2015. He was also the Deputy General Manager of Tokuyama Refinery and Deputy General Manager of Tokuyama Plant at the company from 2010 to 2012.
Takashi Sakata
Managing Executive Officer; Chief Financial Officer; Director Executive BoardMr. Takashi Sakata has been the Chief Financial Officer, Managing Executive Officer, and Director of the company since June 2026. Prior to this, he served as the Managing Executive Officer and Chief Financial Officer of Financial Strategy at the company. Mr. Sakata also served as the Senior Executive Officer and General Manager of the Finance and Accounting Department at the company. He also served as the Managing Director of Idemitsu International (Asia) Pte. Ltd.
Atsuhiko Hirano
Executive Vice President; Chief Operating Officer; Director Executive BoardMr. Atsuhiko Hirano has been the Chief Operating Officer, Executive Vice President, and Director of the company since 2026. Prior to this, he served as a Director and Managing Executive Officer of the company. Mr. Hirano also served as a Director and President of Solar Frontier K.K.
Masahiko Sawa
Executive Vice President; Director; Chief Strategy Officer Executive BoardMr. Masahiko Sawa has been the Chief Strategy Officer, Executive Vice President, and Director of the company since June 2026. Prior to this, he served as a Director and Managing Executive Officer of the company. He also served as the Senior Executive Officer of Manufacturing & Technology and General Manager of the Technology & Engineering Center and Gas Business Department at the company.
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