| Date | Description |
|---|---|
| 2019-04-13 | delete ceo Tatsuhiko Ishii |
| 2019-04-13 | delete person Tatsuhiko Ishii |
| 2017-05-21 | insert ceo Tatsuhiko Ishii |
| 2017-05-21 | insert person Tatsuhiko Ishii |
| 2014-12-18 | delete ceo Tatsuhiko Ishii |
| 2014-12-18 | delete person Tatsuhiko Ishii |