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Japan System Techniques

4323.TTSE PRIMEInformation & Communication
Filed as Japan System Techniques Co., Ltd. (2022-06–2026-07)
Major holders (5%+) · 2
HolderStakeChangeFiled
MIRI Capital Management LLC29.31%+1.03pp2026-02-12
JUST Co., Ltd.23.35%0.00pp2026-04-22

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

Former and minor holders (below 5%) · 5
Hirabayashi Taku2.26%2026-04-22
Hirabayashi Takeaki1.98%2026-04-22
Hirabayashi Dai0.97%2026-04-22
Hirabayashi Emiko0.24%2026-04-22
Hirabayashi Mami0.00%2026-04-22
Ownership history · 23
FiledHolderRatioChangePurpose
2025-09-25AmendedMIRI Capital Management LLC2025-09-25 · amended27.27%+1.02ppMaterial proposals to management (activist); Held for clients (discretionary / trust); Asset management / investment
2024-12-02AmendedMIRI Capital Management LLC2024-12-02 · amended26.25%+1.02ppMaterial proposals to management (activist); Held for clients (discretionary / trust); Asset management / investment
2024-09-26AmendedMIRI Capital Management LLC2024-09-26 · amended25.23%newMaterial proposals to management (activist); Held for clients (discretionary / trust); Asset management / investment

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