Kentaro Yashima八島 健太郎

Director, Densan System Holdings Co.,Ltd.

Net worth (est.)
¥855M
#2492 in Japan
Listed shares · incl. ¥826M via asset-management cos.
Executive pay
—
Not disclosed
Dividends (a year)
¥21.3M
#2080
Own name ¥725,400 / via companies ¥20.6M
Total income (est.)
¥21.3M
#4666
Pay + dividends, before tax
Taxes (est.)
¥152,365
#5873
Income tax ¥111,095 / resident tax ¥41,270
Other assets (est.)
¥35.2M
¥890M with shares
After-tax income 2023–2025, before spending
Inheritance tax (est.)
¥83.5M
#3139
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.

Asset-management companies: 八島有香est. (their holdings are included in net worth)

Holdings

CompanyHeld bySharesStakePriceValueDividends
Densan System Holdings Co.,Ltd.
4072 · FY ending Dec 2025
八島有香 229,076 2.12% ¥3,605 ¥826M ¥20.6M
Densan System Holdings Co.,Ltd.
4072 · FY ending Dec 2025 · Director
Own name 8,060 — ¥3,605 ¥29.1M ¥725,400

By year

YearNet worthPayDividendsTotal incomeTaxes (est.)After tax (est.)Share sales (after tax)
2025¥855M—¥21.3M¥21.3M¥152,365¥573,035—
2024¥595M—¥14.2M¥14.2M¥88,250¥321,550—
2023¥632M—¥8.5M¥8.5M¥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.

Inheritance tax (estimate)

Estate ¥585M = listed shares in own name ¥29.1M + shares held via asset-management companies ¥520M (value ¥826M less 37% corporate tax on unrealized gains) + other assets (est.) ¥35.2M

Total inheritance tax paid: ¥83.5M (14.3% of the estate).

HeirInheritsTaxAfter tax
Spouse¥292M¥0¥292M
Each child¥146M¥41.8M¥104M

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