Kobayashi Pharmaceutical

4967.TChemicals

Filed as KOBAYASHI PHARMACEUTICAL CO.,LTD. (2022-08–2026-08)

Major holders (5%+) · 1

Holder	Stake	Change	Filed
Oasis Management Company Ltd.	14.41%	+1.04pp	2026-09-09

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

Ownership history · 6

Filed	Holder	Ratio	Change	Purpose
2026-09-09	Oasis Management Company Ltd.2026-09-09	14.41%	+1.04pp	Material proposals to management (activist); Engagement / governance dialogue; Pure investment
2026-05-13	Oasis Management Company Ltd.2026-05-13	13.37%	+0.31pp	Material proposals to management (activist); Engagement / governance dialogue
2025-12-26	Oasis Management Company Ltd.2025-12-26	13.06%	+2.96pp	Material proposals to management (activist)
2024-12-25	Oasis Management Company Ltd.2024-12-25	10.10%	+2.56pp	Material proposals to management (activist)
2024-11-19	Oasis Management Company Ltd.2024-11-19	7.54%	+2.34pp	Material proposals to management (activist)
2024-07-24Amended	Oasis Management Company Ltd.2024-07-24 · amended	5.20%	new	Material proposals to management (activist)

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