Sinochem Holdings Announces Completion of Fourth Treasury Stock Buyback and Execution Details

1. Original upper limit of total repurchase amount (NT$): 5,998,617,899 2. Original intended repurchase period: 05/06/2026 ~ 07/03/2026 3. Original intended number of shares to be repurchased: 1,000,000 4. Original intended repurchase price range (NT$): 24.00 ~ 42.00 5. Actual repurchase period: 05/11/2026 ~ 07/03/2026 6. Number of shares actually repurchased: 542,000 7. Total amount spent on repurchased shares (NT$): 18,862,629 8. Average repurchase price per share (NT$): 34.80 9. Cumulative number of treasury shares held (shares): 3,753,000 10. Ratio of cumulative treasury shares to total issued shares (%): 2.51 11. Reason for incomplete execution: To balance market mechanisms and protect overall shareholder interests, the company executed staggered repurchases based on stock price movements and trading volume, and therefore did not fully complete the planned repurchase. 12. Other matters to be disclosed: None