Director, Sumiseki Holdings, Inc.
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: Aso Co., Ltd.est., Aso Co., Ltd.est. (their holdings are included in net worth)
| Company | Held by | Shares | Stake | Price | Value | Dividends |
|---|---|---|---|---|---|---|
| Daiho Corporation 1822 · FY ending Mar 2026 |
Aso Co., Ltd. | 44,530,000 | 50.12% | ¥769 | ¥34.3B | ¥1.5B |
| Sumiseki Holdings, Inc. 1514 · FY ending Mar 2026 |
Aso Co., Ltd. | 34,044,000 | 56.91% | ¥992 | ¥33.8B | ¥681M |
| Wakachiku Construction Co.,Ltd. 1888 · FY ending Mar 2026 |
Aso Co., Ltd. | 5,424,200 | 42.26% | ¥4,087 | ¥22.2B | ¥732M |
| Tsuzuki Denki Co., Ltd. 8157 · FY ending Mar 2026 |
Aso Co., Ltd. | 4,500,000 | 23.97% | ¥3,453 | ¥15.5B | ¥567M |
| 株式会社西日本フィナンシャルホールディングス 7189 · FY ending Mar 2026 |
Aso Co., Ltd. | 3,064,000 | 2.19% | ¥3,704 | ¥11.3B | ¥362M |
| Nittetsu Mining CO.,Ltd. 1515 · FY ending Mar 2026 |
Aso Co., Ltd. | 3,937,000 | 5.00% | ¥2,483 | ¥9.8B | ¥650M |
| Taiheiyo Cement Corporation 5233 · FY ending Mar 2026 |
Aso Co., Ltd. | 2,623,000 | 2.35% | ¥3,500 | ¥9.2B | ¥262M |
| KOSAIDO Holdings Co., Ltd. 7868 · FY ending Mar 2026 |
Aso Co., Ltd. | 13,499,000 | 9.13% | ¥487 | ¥6.6B | ¥180M |
| CHIKARANOMOTO HOLDINGS Co.,Ltd. 3561 · FY ending Mar 2026 |
Aso Co., Ltd. | 2,950,000 | 9.75% | ¥1,447 | ¥4.3B | ¥59.0M |
| アグロ カネショウ株式会社 4955 · FY ending Dec 2023 |
Aso Co., Ltd. | 2,199,000 | 18.15% | ¥1,537 | ¥3.4B | ¥70.4M |
| Hurxley Holdings Corporation 7561 · FY ending Mar 2026 |
Aso Co., Ltd. | 1,920,000 | 10.38% | ¥674 | ¥1.3B | ¥53.8M |
| YAMAX Corp. 5285 · FY ending Mar 2026 |
Aso Co., Ltd. | 687,000 | 6.77% | ¥1,538 | ¥1.1B | ¥45.3M |
| Kyowanissei Co.,Ltd. 1981 · FY ending Mar 2026 |
Aso Co., Ltd. | 730,000 | 6.97% | ¥1,383 | ¥1.0B | ¥36.5M |
| Nakabohtec Corrosion Protecting Co.,Ltd. 1787 · FY ending Mar 2026 |
Aso Co., Ltd. | 153,000 | 6.26% | ¥6,181 | ¥946M | ¥51.3M |
| Rkb Mainichi Holdings Corporation 9407 · FY ending Mar 2026 |
Aso Co., Ltd. | 155,400 | 7.08% | ¥5,899 | ¥917M | ¥11.7M |
| Yamau Holdings Co., Ltd. 5284 · FY ending Mar 2026 |
Aso Co., Ltd. | 400,000 | 6.60% | ¥2,127 | ¥851M | ¥44.0M |
| Isewan Terminal Service Co.,Ltd. 9359 · FY ending Mar 2026 |
Aso Co., Ltd. | 800,000 | 3.13% | ¥958 | ¥767M | ¥29.6M |
| AuBEX CORPORATION 3583 · FY ending Mar 2026 |
Aso Co., Ltd. | 445,000 | 14.76% | ¥1,338 | ¥595M | ¥15.6M |
| SE Corporation 3423 · FY ending Mar 2026 |
Aso Co., Ltd. | 975,000 | 3.20% | ¥272 | ¥265M | ¥12.7M |
| Daisan Co.,Ltd. 4750 · FY ending Apr 2026 |
Aso Co., Ltd. | 114,000 | 1.78% | ¥576 | ¥65.7M | ¥2.5M |
| Daiho Corporation 1822 · FY ending Mar 2026 · Director |
Own name | — | — | ¥769 | ¥0 | ¥0 |
| Nittoc Construction Co.,Ltd. 1929 · FY ending Mar 2026 · Director |
Own name | — | — | ¥1,237 | ¥0 | ¥0 |
| Sumiseki Holdings, Inc. 1514 · FY ending Mar 2026 · Director |
Own name | — | — | ¥992 | ¥0 | ¥0 |
| 麻生フオームクリート株式会社 1730 · FY ending Mar 2024 |
Aso Co., Ltd. | 1,420,000 | 41.59% | — | — | ¥4.3M |
| Year | Net worth | Pay | Dividends | Total income | Taxes (est.) | After tax (est.) | Share sales (after tax) |
|---|---|---|---|---|---|---|---|
| 2026 | ¥155B | — | ¥5.3B | ¥5.3B | ¥0 | ¥0 | ¥353M |
| 2025 | ¥99.3B | — | ¥4.6B | ¥4.6B | ¥0 | ¥0 | — |
| 2024 | ¥96.9B | — | ¥3.7B | ¥3.7B | ¥0 | ¥0 | ¥63.1M |
| 2023 | ¥72.7B | — | ¥2.9B | ¥2.9B | ¥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 ¥111B = listed shares in own name ¥0 + shares held via asset-management companies ¥97.4B (value ¥155B less 37% corporate tax on unrealized gains) + other assets (est.) ¥13.7B
Total inheritance tax paid: ¥30.4B (27.4% of the estate).
| Heir | Inherits | Tax | After tax |
|---|---|---|---|
| Spouse | ¥55.6B | ¥0 | ¥55.6B |
| Each child | ¥27.8B | ¥15.2B | ¥12.6B |
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.