![Tsuyoshi Yamamoto](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>)
Net worth: 50 M $ as of 2026-05-30
Tsuyoshi Yamamoto was the founder of Jibannet Holdings Co., Ltd., established in 2008, where the title held was President, CEO & Representative Director from 2015 to 2021.
Mr. Yamamoto is currently Chief Executive Officer at House Epo Pte.
Ltd. Former positions include President, CEO & Representative Director at Jibannet Co., Ltd. (New).
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-02-26 | 5,485,000 ( 23.7% ) | 50 M $ | 2026-05-30 |
| Companies | Position | Start |
|---|---|---|
Houseepo Pte. Ltd.
 Houseepo Pte. Ltd. Miscellaneous Commercial ServicesCommercial Services Supports relocation to prime locations and business expansion, producing earthing life & support entrepreneurs | Chief Executive Officer | - |
| Companies | Position | End |
|---|---|---|
Jibannet Co., Ltd. (New)
 Jibannet Co., Ltd. (New) Miscellaneous Commercial ServicesCommercial Services Provides ground analysis services | Chief Executive Officer | - |
| JIBANNET HOLDINGS CO., LTD. | Chief Executive Officer | 2021-06-25 |
Active
Inactive
Listed companies
Private companies
| Private companies | 3 |
|---|---|
Jibannet Holdings Co., Ltd.
 Jibannet Holdings Co., Ltd. Engineering & ConstructionIndustrial Services Engages in ground analysis and research services | Industrial Services |
Houseepo Pte. Ltd.
Houseepo Pte. Ltd. Miscellaneous Commercial ServicesCommercial Services Supports relocation to prime locations and business expansion, producing earthing life & support entrepreneurs | Commercial Services |
Jibannet Co., Ltd. (New)
Jibannet Co., Ltd. (New) Miscellaneous Commercial ServicesCommercial Services Provides ground analysis services | Commercial Services |
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