![Sadao Watanabe](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>)
Sadao Watanabe
President at
Sumaiplus S.S.I. Co. Ltd.
Net worth: 1 M $ as of 2026-07-30
Profile
Sadao Watanabe currently works at Starts Small-Amount Short-Term Insurance Co., Ltd., as President & Representative Director.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
Data Horizon Co., Ltd.
 Data Horizon Co., Ltd. Packaged SoftwareTechnology Services Engages in the business of medical-related information services 2.3% | 2025-09-29 | 292,200 ( 2.3% ) | 1 M $ | 2026-07-30 |
Sadao Watanabe active positions
| Companies | Position | Start |
|---|---|---|
Sumaiplus S.S.I. Co. Ltd. | President | - |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Linked companies
| Private companies | 1 |
|---|---|
Sumaiplus S.S.I. Co. Ltd. |
- Stock Market
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- Sadao Watanabe
