![Hideo Ishiwaki](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>)
Hideo Ishiwaki
No open positions remaining
Net worth: 41 M $ as of 2026-08-30
Profile
Mr. Hideo Ishiwaki was previously employed as a Chairman by TESS Holdings Co., Ltd.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
TESS HOLDINGS CO., LTD. 14.13% | 2025-12-30 | 10,000,100 ( 14.13% ) | 41 M $ | 2026-08-30 |
Former positions of Hideo Ishiwaki
| Companies | Position | End |
|---|---|---|
| TESS HOLDINGS CO.,LTD. | President | 2022-08-31 |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
11
1st degree connections
1
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 1 |
|---|---|
TESS Holdings Co., Ltd.
 TESS Holdings Co., Ltd. Electric UtilitiesUtilities Engages in distribution of energy and provides engineering services | Utilities |
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- Hideo Ishiwaki
