Change in major shareholder as of 31 July 2026
Columbia Management Investment Advisers LLC, a major shareholder of Rigaku Holdings Corporation (joint holder: Threadneedle Asset Management Limited)
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.
Direct ownership: 212,347 voting rights (21,234,700 shares); aggregate ownership: not stated; total: 212,347 voting rights (21,234,700 shares), 9.38% (as of 30 June 2026)
Direct ownership: 238,287 voting rights (23,828,700 shares); aggregate ownership: not stated; total: 238,287 voting rights (23,828,700 shares), 10.53% (as of 31 July 2026)
Related procedures
Submission of a Large Shareholding Report (Change Report)
Director-General of the Kanto Local Finance Bureau
There are no matters requiring particular disclosure regarding the outlook at this time.
This matter is based on the Large Shareholding Report (Amendment Report), and no particular information was stated regarding the outlook.
| Item | Details |
|---|---|
| Event name | Change in major shareholder as of 31 July 2026 |
| Date of occurrence | 31 July 2026 |
| Date recognized / date notice received | 7 August 2026 (recognized upon the filing of the Large Shareholding Report (Amendment Report)) |
| Subject Entity | Columbia Management Investment Advisers LLC, a major shareholder of Rigaku Holdings Corporation (joint holder: Threadneedle Asset Management Limited) |
| Impact on Earnings Forecast | There are no matters requiring particular disclosure regarding the outlook at this time. |
| Type of litigation or proceeding | Submission of a Large Shareholding Report (Change Report) |
| Court or authority | Director-General of the Kanto Local Finance Bureau |
| Voting rights ownership percentage before the change | Direct ownership: 212,347 voting rights (21,234,700 shares); aggregate ownership: not stated; total: 212,347 voting rights (21,234,700 shares), 9.38% (as of 30 June 2026) |
| Voting rights ownership percentage after the change | Direct ownership: 238,287 voting rights (23,828,700 shares); aggregate ownership: not stated; total: 238,287 voting rights (23,828,700 shares), 10.53% (as of 31 July 2026) |
| Outlook | This matter is based on the Large Shareholding Report (Amendment Report), and no particular information was stated regarding the outlook. |
Items this document does not state (15)
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.The company became aware of the change in its major shareholder when a Large Shareholding Report (Amendment Report) was filed with the Director-General of the Kanto Local Finance Bureau on 7 August 2026. No specific reason for the increase in the ownership ratio was stated.