Institutional Ownership
Medirom Healthcare Tech Inc
CUSIP 58510H103SPONSORED ADSMRMQ1 2026
13D / 13G Filings
6
Schedule 13D/13G on record
Beneficial Filers
5
Distinct reporting persons
Largest Stake
41.7%
Max % of class reported
Institutional Holders
5
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
6 filings · latest Sep 2, 2025
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Sep 2, 2025 | Kouji Eguchi | 13D/A | 25.8% | — | SEC |
| 2 | May 30, 2025 | Kufu Company Holdings, Inc. | 13D/A | 7.7% | — | SEC |
| 3 | Dec 10, 2024 | Triple One Investment Partnership | 13G | 7.1% | 380.0K | SEC |
| 4 | Jan 25, 2023 | Eguchi Kouji | 13D | 41.7% | 2.03M | SEC |
| 5 | Jan 6, 2023 | Kufu Co Inc. | 13D | 11.8% | 662.3K | SEC |
| 6 | Jan 15, 2021 | Eguchi Kouji | 13G | 37.3% | 1.88M | SEC |
Top Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Ubs Group AG | 26.5K | $29.7K |
| 2 | Two Sigma Securities, LLC | 14.0K | $15.7K |
| 3 | Gamma Investing LLC | 6.4K | $7.2K |
| 4 | Rhumbline Advisers | 2.0K | $2.2K |
| 5 | Hrt Financial LP | 11.9K | $13 |