Issei Mori森 一成

Major shareholder of Wesco Holdings Inc.

Net worth (est.)
¥562M
#4631 in Japan
Listed shares ¥503M + other assets ¥59.6M
Executive pay
—
Not disclosed
Dividends (a year)
¥19.7M
#2512
Total income (est.)
¥19.7M
#11102
Pay + dividends, before tax
Taxes (est.)
¥4.0M
#11886
Income tax ¥3.0M / resident tax ¥990,800
Other assets (est.)
¥59.6M
After-tax income 2019–2026 (incl. ¥3.7M from share sales), before spending
Inheritance tax (est.)
¥78.8M
#4612
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
Wesco Holdings Inc.
6091 · FY ending Jul 2026
Own name 365,000 2.82% ¥869 ¥317M ¥10.9M
Mori-Gumi Co., Ltd.
1853 · FY ending Mar 2026
Own name 575,000 1.76% ¥322 ¥185M ¥8.1M
WellcoHoldings Corporation
7831 · FY ending Oct 2025
Own name 358,000 2.31% — — ¥716,000

By year

YearNet worthListed sharesPayDividendsTotal incomeTaxes (est.)After tax (est.)Share sales (after tax)
2026partial¥562M¥503M—¥19.0M¥19.0M¥3.9M¥15.1M¥3.7M
2025¥428M¥388M—¥15.8M¥15.8M¥3.2M¥12.6M—
2024¥379M¥351M—¥11.4M¥11.4M¥2.3M¥9.0M—
2023¥265M¥246M—¥9.0M¥9.0M¥1.8M¥7.2M—
2022¥229M¥217M—¥8.1M¥8.1M¥1.6M¥6.4M—
2021¥161M¥156M—¥5.5M¥5.5M¥1.1M¥4.4M—
2020¥104M¥103M—¥580,000¥580,000¥5,000¥575,000—
2019¥73.1M¥72.5M—¥585,000¥585,000¥5,000¥580,000—

"Partial" years carry forward the previous year's value for companies that have not yet filed that year's annual report (such as December year-end companies). Pay and dividends cover only companies that have filed.

Net worth for each year is listed shares plus the other assets (est.) accumulated up to that year. 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 ¥562M = listed shares in own name ¥503M + other assets (est.) ¥59.6M

Total inheritance tax paid: ¥78.8M (14.0% of the estate).

HeirInheritsTaxAfter tax
Spouse¥281M¥0¥281M
Each child¥141M¥39.4M¥101M

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