Mayumi Ueda上田 真由美

Major shareholder of 株式会社TWOSTONE&Sons

Net worth (est.)
¥1.2B
#2148 in Japan
Listed shares
Executive pay
—
Not disclosed
Dividends (a year)
¥666,850
#5386
Total income (est.)
¥666,850
#5915
Pay + dividends, before tax
Taxes (est.)
¥10,013
#5918
Income tax ¥0 / resident tax ¥10,013
Other assets (est.)
¥159M
¥1.3B with shares
After-tax income 2023–2025 (incl. ¥156M from share sales), before spending
Inheritance tax (est.)
¥256M
#2139
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
株式会社TWOSTONE&Sons
7352 · FY ending Aug 2025
Own name 1,333,700 3.06% ¥871 ¥1.2B ¥666,850
株式会社海帆
3133 · FY ending Mar 2026 · Director
Own name 63,900 — — — —

By year

YearNet worthPayDividendsTotal incomeTaxes (est.)After tax (est.)Share sales (after tax)
2025¥1.2B—¥1.9M¥1.9M¥255,215¥1.6M¥156M
2024¥1.4B—¥1.1M¥1.1M¥79,589¥1.0M—
2023¥636M—¥439,300¥439,300¥94,243¥345,057—

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 ¥1.3B = listed shares in own name ¥1.2B + other assets (est.) ¥159M

Total inheritance tax paid: ¥256M (19.4% of the estate).

HeirInheritsTaxAfter tax
Spouse¥660M¥0¥660M
Each child¥330M¥128M¥202M

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