[ESMT] Announcement of Dividend Record Date, Payment Date, and Related Matters

1. Date of Board of Directors/Shareholders meeting resolution or company decision: 2026/05/22 2. Type of Ex-rights/Ex-dividend: Ex-dividend 3. Type and amount of common share dividends distributed: Cash dividend: 1.0 NTD per share, totaling 298,127,841 NTD. 4. Ex-rights (Ex-dividend) trading date: 2026/07/02 5. Last transfer date: 2026/07/03 6. Transfer suspension start date: 2026/07/04 7. Transfer suspension end date: 2026/07/08 8. Ex-rights (Ex-dividend) record date: 2026/07/08 9. Last date for bond conversion application: Not applicable 10. Bond conversion suspension start date: Not applicable 11. Bond conversion suspension end date: Not applicable 12. Common share cash dividend payment date: 2026/07/31 13. Other matters: None