Planned changes in the largest shareholder, major shareholders and other affiliated company, and accumulation of shares prescribed by Cabinet Order as an act equivalent to a tender offer
CellSource Co., Ltd., Serial Incubate Co., Ltd., and Yamakawa Masayuki (山川雅之)
CellSource Co., Ltd. shares (5,000,000 shares acquired)
Because a portion of the company's shares held by Yamakawa Masayuki (山川雅之) will be transferred to Serial Incubate Co., Ltd., which he represents.
No impact (no quantified impact on financial results disclosed)
The change will have no impact on the Company's management structure, financial results or other matters.
Change in voting rights ownership ratio
The voting rights ownership percentage is the proportion of the voting rights exercisable at a shareholders' meeting held by the shareholder.
Serial Incubate Co., Ltd.: 19,008 voting rights (1,900,800 shares), 9.59% (as of 30 April 2026). Yamakawa Masayuki (山川雅之): 71,739 voting rights (7,173,900 shares), 36.21% (as of 30 April 2026).
Serial Incubate Co., Ltd.: 69,008 voting rights (6,900,800 shares), 34.83%. Yamakawa Masayuki (山川雅之): 21,739 voting rights (2,173,900 shares), 10.97%.
Related procedures
Accumulation of shares prescribed by Cabinet Order as an act equivalent to a tender offer
Serial Incubate Co., Ltd. plans to hold the company's shares long term as a stable shareholder. The company states that the change will have no impact on its management structure, financial results or other matters.
| Item | Details |
|---|---|
| Event name | Planned changes in the largest shareholder, major shareholders and other affiliated company, and accumulation of shares prescribed by Cabinet Order as an act equivalent to a tender offer |
| Date of occurrence | 9 September 2026 (scheduled change date and acquisition date) |
| Date recognized / date notice received | 9 September 2026 (date the company was notified by Serial Incubate Co., Ltd. and Yamakawa Masayuki (山川雅之)) |
| Subject Entity | CellSource Co., Ltd., Serial Incubate Co., Ltd., and Yamakawa Masayuki (山川雅之) |
| Target Locations / Products | CellSource Co., Ltd. shares (5,000,000 shares acquired) |
| Cause | Because a portion of the company's shares held by Yamakawa Masayuki (山川雅之) will be transferred to Serial Incubate Co., Ltd., which he represents. |
| Amount of Impact on Business Performance | No impact (no quantified impact on financial results disclosed) |
| Impact on Earnings Forecast | The change will have no impact on the Company's management structure, financial results or other matters. |
| Type of litigation or proceeding | Accumulation of shares prescribed by Cabinet Order as an act equivalent to a tender offer |
| Voting rights ownership percentage before the change | Serial Incubate Co., Ltd.: 19,008 voting rights (1,900,800 shares), 9.59% (as of 30 April 2026). Yamakawa Masayuki (山川雅之): 71,739 voting rights (7,173,900 shares), 36.21% (as of 30 April 2026). |
| Voting rights ownership percentage after the change | Serial Incubate Co., Ltd.: 69,008 voting rights (6,900,800 shares), 34.83%. Yamakawa Masayuki (山川雅之): 21,739 voting rights (2,173,900 shares), 10.97%. |
| Outlook | Serial Incubate Co., Ltd. plans to hold the company's shares long term as a stable shareholder. The company states that the change will have no impact on its management structure, financial results or other matters. |
Items this document does not state (13)
These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.
The reasons the company gives
The company's own explanation, not something inferred from the numbers.Because Yamakawa Masayuki (山川雅之) plans to transfer a portion of his shares to Serial Incubate Co., Ltd., an asset management company he represents, and the company plans to hold the shares long term as a stable shareholder. The company explains that there will be no impact on its management structure, financial results or other matters.