Noriaki Tsuboi坪井 典明

Major shareholder of Daishin Chemical Co.,Ltd.

Net worth (est.)
¥2.1B
#1409 in Japan
Listed shares · incl. ¥1.0B via asset-management cos.
Executive pay
—
Not disclosed
Dividends (a year)
¥52.2M
#1290
Own name ¥27.2M / via companies ¥25.0M
Total income (est.)
¥52.2M
#2916
Pay + dividends, before tax
Taxes (est.)
¥8.6M
#4057
Income tax ¥6.3M / resident tax ¥2.2M
Other assets (est.)
¥143M
¥2.2B with shares
After-tax income 2023–2026, before spending
Inheritance tax (est.)
¥400M
#1671
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: Tsuboui Ltd.est. (their holdings are included in net worth)

Holdings

CompanyHeld bySharesStakePriceValueDividends
Daishin Chemical Co.,Ltd.
4629 · FY ending Mar 2026
Own name 604,000 13.21% ¥1,808 ¥1.1B ¥27.2M
Daishin Chemical Co.,Ltd.
4629 · FY ending Mar 2026
Tsuboui Ltd. 556,000 12.16% ¥1,808 ¥1.0B ¥25.0M

By year

YearNet worthPayDividendsTotal incomeTaxes (est.)After tax (est.)Share sales (after tax)
2026¥2.1B—¥52.2M¥52.2M¥8.6M¥18.6M—
2025¥1.6B—¥46.4M¥46.4M¥7.0M¥17.1M—
2024¥1.8B—¥46.4M¥46.4M¥7.0M¥17.1M—
2023¥1.4B—¥46.4M¥46.4M¥7.0M¥17.1M—

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 ¥1.9B = listed shares in own name ¥1.1B + shares held via asset-management companies ¥633M (value ¥1.0B less 37% corporate tax on unrealized gains) + other assets (est.) ¥143M

Total inheritance tax paid: ¥400M (21.4% of the estate).

HeirInheritsTaxAfter tax
Spouse¥934M¥0¥934M
Each child¥467M¥200M¥267M

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