Umi Sato佐藤 海

Representative Director, Rebase, Inc.

Net worth (est.)
¥1.4B
#1879 in Japan
Listed shares · incl. ¥934M via asset-management cos.
Executive pay
¥17.0Mest.
Average for the same officer category
Dividends (a year)
¥0
Total income (est.)
¥17.0M
#4936
Pay + dividends, before tax
Taxes (est.)
¥3.9M
#4825
Income tax ¥2.6M / resident tax ¥1.3M
Other assets (est.)
¥91.6M
¥1.5B with shares
After-tax income 2024–2026, before spending

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: 株式会社elpido 2est. (their holdings are included in net worth)

Holdings

CompanyHeld bySharesStakePriceValueDividends
Rebase, Inc.
5138 · FY ending Mar 2026
株式会社elpido 2 1,540,000 31.32% ¥606 ¥934M —
Rebase, Inc.
5138 · FY ending Mar 2026 · Representative Director
Own name 815,500 16.58% ¥606 ¥495M —

By year

YearNet worthPayDividendsTotal incomeTaxes (est.)After tax (est.)Share sales (after tax)
2026¥1.4B¥17.0M¥0¥17.0M¥3.9M¥11.1M—
2025¥3.5B¥17.6M¥82.4M¥100M¥16.9M¥27.3M—
2024¥2.4B¥15.2M¥0¥15.2M¥3.1M¥10.1M—

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.

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