小宮山 宏小宮山 宏

Director, Shin-Etsu Chemical Co., Ltd.

Net worth (est.)
¥134M
#5168 in Japan
Listed shares
Executive pay
—
Not disclosed
Dividends (a year)
¥3.2M
#4658
Total income (est.)
¥3.2M
#5719
Pay + dividends, before tax
Taxes (est.)
¥648,579
#5646
Income tax ¥485,179 / resident tax ¥163,400
Other assets (est.)
¥198M
¥332M with shares
After-tax income 2023–2026 (incl. ¥184M from share sales), before spending
Inheritance tax (est.)
¥34.2M
#4055
If a spouse and two children inherit in statutory shares (change)

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.

Holdings

CompanyHeld bySharesStakePriceValueDividends
Shin-Etsu Chemical Co., Ltd.
4063 · FY ending Mar 2026 · Director
Own name 18,000 — ¥6,267 ¥113M ¥1.9M
Imagineer Co.,Ltd.
4644 · FY ending Mar 2026 · Director
Own name 21,000 — ¥1,014 ¥21.3M ¥1.3M

By year

YearNet worthPayDividendsTotal incomeTaxes (est.)After tax (est.)Share sales (after tax)
2026¥134M—¥3.2M¥3.2M¥648,579¥2.5M—
2025¥93.4M—¥3.0M¥3.0M¥605,714¥2.4M—
2024¥133M—¥2.6M¥2.6M¥542,331¥2.1M¥184M
2023¥68.5M—¥8.0M¥8.0M¥1.6M¥6.4M—

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.

Inheritance tax (estimate)

Estate ¥332M = listed shares in own name ¥134M + other assets (est.) ¥198M

Total inheritance tax paid: ¥34.2M (10.3% of the estate).

HeirInheritsTaxAfter tax
Spouse¥166M¥0¥166M
Each child¥83.0M¥17.1M¥65.9M

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.

Estimates from annual securities reports (EDINET). The English name is romanized automatically and may differ from the spelling the person uses. Methodology · Corrections and removal requests: contact