Medical System Network

4350.TRetail Trade
Filed as MEDICAL SYSTEM NETWORK Co.,Ltd. (2022-06–2026-08)
Major holders (5%+) · 1
HolderStakeChangeFiled
Hikari Tsushin K.K.14.56%+1.31pp2026-11-04

Each holder's own ratio from its most recent large-shareholding report.

Former and minor holders (below 5%) · 4
SAMARANG UCITS4.82%2025-02-20
UH Partners 2, Inc.4.56%2025-10-16
UH6 Inc.0.37%2025-10-16
UH5 Inc.0.00%2025-10-16
Ownership history · 21
FiledHolderRatioChangePurpose
2025-10-16AmendedUH6 Inc.2025-10-16 · amended0.37%no changePure investment
2025-10-16AmendedUH Partners 2, Inc.2025-10-16 · amended4.56%+1.01ppPure investment
2025-10-16AmendedHikari Tsushin K.K.2025-10-16 · amended7.32%no changePure investment
2025-10-16AmendedUH6 Inc.2025-10-16 · amended0.37%no changePure investment
2025-10-16AmendedUH Partners 2, Inc.2025-10-16 · amended3.55%+1.03ppPure investment
2025-10-16AmendedHikari Tsushin K.K.2025-10-16 · amended7.32%no changePure investment
2025-10-16AmendedUH6 Inc.2025-10-16 · amended0.37%no changePure investment
2025-10-16AmendedUH Partners 2, Inc.2025-10-16 · amended2.52%+1.02ppPure investment
2025-10-16AmendedHikari Tsushin K.K.2025-10-16 · amended7.32%no changePure investment
2025-10-16AmendedUH6 Inc.2025-10-16 · amended0.37%no changePure investment
2025-10-16AmendedUH Partners 2, Inc.2025-10-16 · amended1.50%+1.02ppPure investment
2025-10-16AmendedHikari Tsushin K.K.2025-10-16 · amended7.32%no changePure investment
2025-10-16AmendedUH6 Inc.2025-10-16 · amended0.37%no changePure investment
2025-10-16AmendedUH Partners 2, Inc.2025-10-16 · amended0.48%newPure investment
2025-10-16AmendedHikari Tsushin K.K.2025-10-16 · amended7.32%+0.63ppPure investment
2025-10-16AmendedUH5 Inc.2025-10-16 · amended0.00%-0.37pp—
2025-10-16AmendedUH6 Inc.2025-10-16 · amended0.37%newPure investment
2025-10-16AmendedHikari Tsushin K.K.2025-10-16 · amended6.69%+1.00ppPure investment
2025-10-16AmendedUH5 Inc.2025-10-16 · amended0.37%newPure investment
2025-10-16AmendedHikari Tsushin K.K.2025-10-16 · amended5.69%newPure investment

Each holder in 5% reports, joint holders included. Purpose is classified from the filed text.