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ISSUER PROFILE · CIK 0001819704 · CUSIP 58510H103

MEDIROM Healthcare Technologies Inc.MRM

3 13D/G filings 2 distinct filers 1 insider transactions (365d)

Post-Filing Returns · across 1 activist filings on this issuer

Median 30d
0.0%
avg 0.0%
Median 60d
0.0%
avg 0.0%
Median 90d
0.0%
avg 0.0%
Median 180d
0.0%
avg 0.0%

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Cross-Reference Snapshot

Activist filings
3
2 SCHEDULE 13D/A · 1 SCHEDULE
Distinct filers
2
multi-activist cluster
Insiders (365d)
1
0 buys · 0 sales
Latest short DTC
1.00
as of 2026-08-31

13D/G Filings Timeline · 3 total

FiledFormFilerStakeSharesIntent
2026-08-28 SCHEDULE 13D/A Eguchi Kouji 25.11% 2,031,558 view →
2026-07-17 SCHEDULE 13D/A Kufu Co Holdings Inc. 0 view →
2025-09-02 SCHEDULE Eguchi Kouji 25.77% 2,075,003 view →

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-08-27 Eguchi Kouji director, officer, 10%+ J 79,945

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-08-31 18,094 1.00 -34.4%
2026-08-14 27,597 1.00 -25.5%
2026-07-31 37,052 4.35 -47.9%
2026-07-15 71,107 6.33 -29.3%
2026-06-30 100,574 1.00 -26.2%
2026-06-15 136,211 2.00 -59.8%
2026-05-29 338,625 1.00 +438.9%
2026-05-15 62,840 1.95 -30.0%
2026-04-30 89,740 3.87 -2.4%
2026-04-15 91,916 3.78 -9.1%
2026-03-31 101,129 3.85 -9.2%
2026-03-13 111,391 1.29 +711.5%

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