4155 Hsin Ying Announces Completion of Treasury Stock Repurchase

Release Date: July 10, 2026 Statement Date: July 9, 2026 Statement Time: 16:28:30 Company Code: 4155 Company Name: Hsin Ying Subject: Announcement of Completion of Treasury Stock Repurchase Applicable Clause: Clause 35 Factual Date: July 9, 2026

Details: 1. Original Maximum Repurchase Amount (NT$): 1,028,705,729 2. Original Repurchase Period: May 13, 2026 ~ July 11, 2026 3. Original Number of Shares to be Repurchased: 5,000,000 4. Original Price Range for Repurchase (NT$): 10.00 ~ 19.70 5. Actual Repurchase Period: May 13, 2026 ~ July 9, 2026 6. Number of Shares Actually Repurchased: 5,000,000 7. Total Amount Spent on Repurchase (NT$): 75,462,276 8. Average Price per Share Repurchased (NT$): 15.09 9. Cumulative Number of Own Shares Held (Shares): 5,000,000 10. Percentage of Total Issued Shares Held: 3.46% 11. Reason for Incomplete Execution: N/A 12. Other Matters to be Disclosed: None