Masahiro Sumiyama炭山 昌宏

Major shareholder of CELSYS,Inc.

Net worth (est.)
¥2.0B
#1334 in Japan
Listed shares
Executive pay
—
Not disclosed
Dividends (a year)
¥43.7M
#1364
Total income (est.)
¥43.7M
#3068
Pay + dividends, before tax
Taxes (est.)
¥16.1M
#2787
Income tax ¥12.5M / resident tax ¥3.6M
Other assets (est.)
¥27.7M
¥2.1B with shares
After-tax income 2025, before spending

Other assets (est.): the sum of each year's after-tax income (pay + dividends in own name − estimated taxes and social insurance) and dividends retained by asset-management companies (less about 20% corporate tax), for the years we have data. Spending, real estate, donations and savings from earlier years are not reflected.

Holdings

CompanyHeld bySharesStakePriceValueDividends
CELSYS,Inc.
3663 · FY ending Dec 2025
Own name 1,215,000 4.10% ¥1,668 ¥2.0B ¥43.7M
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