![Katsumi Saito](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Katsumi Saito served as an Outside Director at RS Energy KK and as a Director at Idemitsu Kosan Co., Ltd. He obtained an undergraduate degree from Keio University.
| Companies | Position | End |
|---|---|---|
| SHOWA SHELL SEKIYU KK | Director/Board Member | - |
| IDEMITSU KOSAN CO.,LTD. | Director/Board Member | - |
Active
Inactive
Listed companies
Private companies
| Private companies | 3 |
|---|---|
RS Energy KK
 RS Energy KK Oil Refining/MarketingEnergy Minerals Produces and sells petroleum, petrochemicals, fats, oils and coal | Energy Minerals |
Keio University
 Keio University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Idemitsu Kosan Co., Ltd.
 Idemitsu Kosan Co., Ltd. Oil Refining/MarketingEnergy Minerals Produces petroleum products | Energy Minerals |
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