Kidswell Bio

4584.TTSE GROWTHPharmaceutical

Key numbers · FY ended 2026-03

Revenue¥6.6bn+29.7% YoY Operating income−¥139m-596.8% YoY Net income (owners)−¥414m—Total assets¥6.1bn-13.1% YoY EPS (basic)¥-8.48-1530.8% YoY

Full financial history and reports →

Stock price4584 · View chart ↗

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Latest filings

Thu, May 21 · JST1 filing

15:325% STAKEKidswell Bio · Noritsu Koki Co., Ltd. · 32.60% → 19.08%−13.52pp

Wed, Apr 23 · JST1 filing

15:025% STAKEKidswell Bio · Heights Capital Management, Inc. · 10.94% → 8.93%−2.01pp

Mon, Mar 31 · JST1 filing

16:16MATERIALKidswell Bio · Event with a material impact on financial position

Wed, Mar 5 · JST1 filing

09:015% STAKEKidswell Bio · Heights Capital Management, Inc. · 20.64% → 19.84%−0.80pp

All filings →

Major holders (5%+) · 1

Holder	Stake	Change	Filed
Noritsu Koki Co., Ltd.	19.08%	—	2026-05-21

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