| Date | Description |
|---|---|
| 2023-07-11 | delete chairman Masami Hasegawa |
| 2023-07-11 | insert chairman Takahiro Yamaguchi |
| 2023-07-11 | delete person Masami Hasegawa |
| 2023-07-11 | insert person Takahiro Yamaguchi |
| 2017-07-21 | delete chairman Kinya Tsuruta |
| 2017-07-21 | insert chairman Masami Hasegawa |
| 2017-07-21 | delete person Kinya Tsuruta |
| 2017-07-21 | insert person Masami Hasegawa |