4155 Xunying Announces Completion of Treasury Stock Buyback

Date of Announcement: July 14, 2026 Date of Statement: July 13, 2026 Time of Statement: 16:14:51 Company Code: 4155 Company Name: Xunying Subject: (Correction) Announcement of Completion of Company's Treasury Stock Repurchase Applicable Clause: Item 35 Factual Date: July 9, 2026

Details: 1. Original upper limit for total repurchase amount (NT$): 1,028,705,729 2. Originally scheduled repurchase period: May 13, 2026 ~ July 11, 2026 3. Originally scheduled number of shares to be repurchased: 5,000,000 4. Originally scheduled repurchase price range (NT$): 10.00 ~ 19.70 5. Actual repurchase period: May 14, 2026 ~ July 9, 2026 6. Number of shares actually repurchased: 5,000,000 7. Total amount spent on repurchased shares (NT$): 75,462,276 8. Average repurchase price per share (NT$): 15.09 9. Cumulative number of own shares held (shares): 5,000,000 10. Ratio of cumulative own shares held to total issued shares (%): 3.46 11. Reason for incomplete execution:

12. Other matters to be disclosed: None