President & Representative Director, Koike Sanso Kogyo Co.,Ltd.
Other assets (est.): the sum of each year's after-tax income (pay + dividends in own name − estimated taxes and social insurance) dividends retained by asset-management companies (less about 20% corporate tax), and proceeds from share sales (the drop in shares from the previous year × share price, less 20.315% tax, or about 30% for asset-management companies), for the years we have data. Spending, real estate, donations and savings from earlier years are not reflected.
Asset-management companies: Koike Shoji Co., Ltd.est., Koike Chemical Co., Ltd.est. (their holdings are included in net worth)
| Company | Held by | Shares | Stake | Price | Value | Dividends |
|---|---|---|---|---|---|---|
| Koike Sanso Kogyo Co.,Ltd. 6137 · FY ending Mar 2026 |
Koike Shoji Co., Ltd. | 1,358,000 | 6.44% | ¥1,914 | ¥2.6B | ¥67.9M |
| Koike Sanso Kogyo Co.,Ltd. 6137 · FY ending Mar 2026 |
Koike Chemical Co., Ltd. | 529,000 | 2.51% | ¥1,914 | ¥1.0B | ¥26.4M |
| Koike Sanso Kogyo Co.,Ltd. 6137 · FY ending Mar 2026 · President & Representative Director |
Own name | 159,500 | — | ¥1,914 | ¥305M | ¥8.0M |
| Year | Listed shares | Pay | Dividends | Total income | Taxes (est.) | After tax (est.) | Share sales (after tax) |
|---|---|---|---|---|---|---|---|
| 2026 | ¥3.9B | ¥69.3M | ¥102M | ¥172M | ¥35.6M | ¥39.7M | ¥511M |
| 2025 | ¥665M | ¥52.2M | ¥137M | ¥189M | ¥41.6M | ¥48.0M | — |
| 2024 | ¥2.7B | ¥49.0M | ¥80.5M | ¥130M | ¥23.1M | ¥29.6M | — |
| 2023 | ¥923M | ¥43.2M | ¥36.1M | ¥79.3M | ¥18.3M | ¥25.4M | — |
| 2022 | ¥809M | ¥39.5M | ¥23.9M | ¥63.4M | ¥15.9M | ¥23.1M | — |
| 2021 | ¥805M | ¥37.5M | ¥19.8M | ¥57.3M | ¥14.7M | ¥21.9M | — |
| 2020 | ¥806M | ¥19.1M | ¥23.2M | ¥42.3M | ¥5.3M | ¥13.1M | — |
| 2019 | ¥883M | — | ¥30.8M | ¥30.8M | ¥68,560 | ¥1.4M | — |
| 2018 | ¥1.1B | — | ¥25.6M | ¥25.6M | ¥0 | ¥0 | — |
| 2017 | ¥1.1B | — | ¥33.1M | ¥33.1M | ¥0 | ¥0 | — |
Grouped by the calendar year of each company's fiscal year-end. Years in which the person was not among the top 10 shareholders of a company exclude that company.
Estate ¥3.7B = listed shares in own name ¥305M + shares held via asset-management companies ¥2.3B (value ¥3.6B less 37% corporate tax on unrealized gains) + other assets (est.) ¥1.1B
Total inheritance tax paid: ¥884M (24.2% of the estate).
| Heir | Inherits | Tax | After tax |
|---|---|---|---|
| Spouse | ¥1.8B | ¥0 | ¥1.8B |
| Each child | ¥914M | ¥442M | ¥472M |
Japanese inheritance tax, assuming the estate is split in statutory shares. A spouse pays no tax up to ¥160M or the statutory share, whichever is larger. Family size is not in the securities reports, so you can choose it (with no children, parents or siblings also become heirs, so the real figure differs). Business-succession deferrals, lifetime gifts, donations to foundations, debts and other reliefs are not reflected.