Idemitsu Kosan CEOs: 8 Presidents Since 1940

Revenue and CEOs8 CEOs
Idemitsu Kosan
CEOs and long-term results
FY2026
Consolidated
Revenue
¥8.1 trillion
Net margin
2.1%
Sazo IdemitsuYuji IdemitsuAkira IdemitsuTenboNakanoTsukiokaKitoSakai
Revenue¥19.4 billionRevenue¥209.0 billionRevenue¥3.3 trillionRevenue¥3.6 trillionRevenue¥8.1 trillionNet margin0.9%Net margin0.8%Net margin-1%Net margin2.1%1956/31961/31966/31971/31976/31981/31986/31991/31996/32001/32006/32011/32016/32021/32026/3
Revenue¥209.0 billionRevenue¥3.3 trillionRevenue¥8.1 trillionNet margin0.9%Net margin0.8%Net margin2.1%1956/31966/31976/31986/31996/32006/32016/32026/3
API: /api/5019/financials_history.csv · /api/5019/financials/pl.json
Tenure timeline
1940195019601970198019902000201020202030
Sazo IdemitsuYuji IdemitsuAkira IdemitsuAkihiko TenboKazuhisa NakanoTakashi TsukiokaShunichi KitoNoriaki Sakai
Presidents8

Presidents

NameFromToYearsBackgroundEducation
Sazo IdemitsuMar 1940196625.8Founding familyKobe Higher Commercial School (1909)
Yuji IdemitsuJun 1993Founding familyKyushu Imperial University, Faculty of Law and Letters (1948)
Akira IdemitsuMay 1998Founding familyUniversity of Tokyo, Faculty of Economics (1955)
Akihiko TenboJun 2002Company veteranUniversity of Tokyo, Faculty of Economics, Economics (1964)
Kazuhisa NakanoJun 2009Company veteranWaseda University, Faculty of Commerce (1971)
Takashi TsukiokaJun 2013Company veteranKeio University, Faculty of Law (1975)
Shunichi KitoApr 2018Apr 20257.0Company veteranKeio University, Faculty of Law (1980)
Noriaki SakaiApr 2025Present1.6Company veteranKobe University, Faculty of Law (1985)