CellSource
4880.TTSE STANDARDServices
Filed as CellSource Co., Ltd. (2022-06–2026-06)
Major holders (5%+) · 3
| Holder | Stake |
|---|---|
| SerialIncubate Co., Ltd. | 45.71% |
| Masayuki Yamakawa | 10.95% |
| Masato Tsumamoto | 6.84% |
Each holder's own ratio from its most recent large-shareholding report.
Ownership history · 7
| Holder | Ratio | Change |
|---|---|---|
| Masayuki Yamakawa2025-12-19 · amended | 10.95% | -25.27pp |
| SerialIncubate Co., Ltd.2025-12-19 · amended | 34.76% | +25.16pp |
| Masato Tsumamoto2025-05-07 | 6.84% | no change |
| Masato Tsumamoto2025-02-14 | 6.84% | -0.01pp |
| Masato Tsumamoto2024-03-11 | 6.85% | new |
| SerialIncubate Co., Ltd.2024-03-11 | 9.60% | new |
| Masayuki Yamakawa2024-03-11 | 36.22% | new |
Each holder in 5% reports, joint holders included. Purpose is classified from the filed text.