6550 Polar Vertex Pharma-KY: Announcement Regarding Change of Director at Subsidiary Lin-Yang Biotechnology

Announcement Date: 2026/05/26 Announcement Time: 19:09:08 Company Code: 6550 Company Name: Polar Vertex Pharma-KY Subject: Announcement of change of director at subsidiary Lin-Yang Biotechnology Co., Ltd. Applicable Clause: Clause 6 Event Date: 2026/05/25

Explanation: 1. Date of change: 2026/05/25 2. Type of personnel appointed or changed: Individual director 3. Title and name of the predecessor: Chen Hung-wen, Director of Lin-Yang Biotechnology Co., Ltd. 4. Resume of the predecessor: Director of Lin-Yang Biotechnology Co., Ltd. 5. Title and name of the successor: Hou Yu-hsiang, Director of Lin-Yang Biotechnology Co., Ltd. 6. Resume of the successor: HR Director at Lin-Yang Biotechnology 7. Circumstances of change: Resignation 8. Reason for change: Reassignment by the parent company 9. Shareholding at the time of appointment: Not applicable 10. Original term: Not applicable 11. Effective date of appointment: Not applicable 12. Ratio of change in directors during the same term: Not applicable 13. Ratio of change in independent directors during the same term: Not applicable 14. Ratio of change in supervisors during the same term: Not applicable 15. Whether more than one-third of directors have changed: No 16. Other notes: None