![Masakazu Sakai](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>)
Masakazu Sakai
Chief Executive Officer at
KOKEN LTD.
Net worth: 6 M $ as of 2026-06-29
Profile
Masakazu Sakai is currently the Chairman & Chief Executive Officer at Koken Ltd. and the President & Representative Director at Sakai Tatemono KK.
He was formerly the Chairman of the Japan Safety Appliances Association.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
KOKEN LTD. 11.58% | 2025-12-30 | 591,000 ( 11.58% ) | 6 M $ | 2026-06-29 |
Masakazu Sakai active positions
| Companies | Position | Start |
|---|---|---|
| KOKEN LTD. | Chief Executive Officer | 1967-07-31 |
Sakai Tatemono KK | President | 2003-02-28 |
Former positions of Masakazu Sakai
| Companies | Position | End |
|---|---|---|
Japan Safety Appliances Association | Chairman | - |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
12
1st degree connections
3
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 3 |
|---|---|
Koken Ltd.
 Koken Ltd. Medical SpecialtiesHealth Technology Manufactures and sells labor safety sanitation protectors which includes masks | Health Technology |
Sakai Tatemono KK | |
Japan Safety Appliances Association |
- Stock Market
- Insiders
- Masakazu Sakai
