7788 Matsukawa Seimitsu

Release Date: July 2, 2026 Statement Date: July 1, 2026 Statement Time: 15:24:11 Company Code: 7788 Company Name: Matsukawa Precision

Subject: Announcement on Change of Supervisor at Key Subsidiary Shanghai Matsukawa Precision Electronics Co., Ltd. Applicable Clause: Item 6 Factual Date: July 1, 2026

Details: 1. Date of Change: July 1, 2026 2. Category of Appointed or Changed Personnel (please select from: legal person director, legal person supervisor, independent director, individual director, or individual supervisor): Individual Supervisor 3. Former Position and Name: (1) Supervisor: Li Yigang 4. Former's Resume: (1) Supervisor: Li Yigang / Supervisor, Shanghai Matsukawa Precision Electronics Co., Ltd. 5. New Appointee's Position and Name: (1) Supervisor: Wu Songren 6. New Appointee's Resume: (1) Supervisor: Wu Songren / Director and General Manager, Matsukawa Precision Co., Ltd. 7. Nature of Change (please enter 'resignation', 'dismissal', 'end of term', 'deceased', or 'new appointment'): New Appointment 8. Reason for Change: Replacement of supervisor 9. Number of Shares Held by New Appointee at Time of Appointment: Not applicable 10. Original Term (e.g., xx/xx/xx ~ xx/xx/xx): Not applicable 11. Effective Date of New Appointment: July 1, 2026 12. Director Turnover Rate During Same Term: Not applicable 13. Independent Director Turnover Rate During Same Term: Not applicable 14. Supervisor Turnover Rate During Same Term: 100% 15. Is the change involving one-third or more of the directors? (Yes or No): No 16. Other Matters to be Clarified: Implemented in accordance with the shareholder resolution of Shanghai Matsukawa Precision Electronics Co., Ltd. dated July 1, 2026.