CellSource

4880.TTSE STANDARDServices

Filed as CellSource Co., Ltd. (2022-06–2026-06)

Key numbers · FY ended 2025-10

Revenue¥3.7bn—Operating income¥167m—Net income (owners)¥11m—Total assets¥7.0bn—EPS (basic)¥0.54—

Full financial history and reports →

Stock price4880 · View chart ↗

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Latest filings

Wed, Sep 16 · JST1 filing

11:525% STAKECellSource · SerialIncubate Co., Ltd. + 1 joint holder · 45.78% → 45.71%−0.07pp

Thu, Sep 10 · JST1 filing

11:04MATERIALCellSource · Change in major shareholder

Fri, Dec 19 · JST1 filing

15:525% STAKECellSource · Masayuki Yamakawa + 1 joint holder · 45.82% → 45.78%−0.04pp

Mon, Jul 14 · JST1 filing

15:30MATERIALCellSource · Change of representative director

Thu, Oct 31 · JST1 filing

15:06MATERIALCellSource · Change of representative director

All filings →

Major holders (5%+) · 3

Holder	Stake	Change	Filed
SerialIncubate Co., Ltd.	45.71%	-0.07pp	2026-09-16
Masayuki Yamakawa	10.95%	-25.27pp	2025-12-19
Masato Tsumamoto	6.84%	0.00pp	2025-05-07

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