Hwang Chang Announces Completion of Treasury Stock Buyback Program

Announcement Date: July 18, Year 115 Statement Date: July 17, Year 115 Statement Time: 15:43:52 Company Code: 2543 Company Name: Hwang Chang Subject: Announcement of Completion and Execution Status of Share Buyback Program Applicable Clause: Clause 35 Factual Date: July 18, Year 115

Details: 1. Original upper limit for total buyback amount (NTD): 4,192,993,463 2. Original buyback period: 05/19/115 ~ 07/18/115 3. Original number of shares intended for buyback: 20,000,000 4. Original buyback price range (NTD): 35.00 ~ 70.00 5. Actual buyback period: 05/21/115 ~ 06/16/115 6. Number of shares actually bought back (shares): 14,235,000 7. Total amount spent on buyback (NTD): 661,434,108 8. Average price per share (NTD): 46.47 9. Cumulative number of treasury shares held (shares): 14,235,000 10. Percentage of cumulative treasury shares to total issued shares (%): 2.69 11. Reason for incomplete execution: To protect shareholder interests and maintain market mechanisms, shares were repurchased in batches based on stock price fluctuations and trading volume, thus the original plan was not fully completed. 12. Other disclosures: None