Announcement of the base date for capital increase by converting employee stock options into common shares

1. Date of Board Resolution: 115/05/11 2. Source of Capital Increase: Exercise of employee stock options for conversion into common stock 3. Whether a global filing for new share issuance is adopted (Yes, please specify the planned issuance period / No): No 4. Total amount and number of shares for the entire case (if it's a capital increase from retained earnings or surplus, the number of shares issued does not include those allocated to employees): Not applicable 5. For global filing for new share issuance cases, amount and number of shares for this issuance: Not applicable 6. For global filing for new share issuance cases, remaining amount and number of shares after this issuance: Not applicable 7. Par value per share: NT$10 8. Issue price: NT$10 per share subscription price 9. Number of shares subscribed by employees or amount allocated: 484,900 shares 10. Number of shares for public sale: Not applicable 11. Proportion of subscription or gratuitous allocation for original shareholders: Not applicable 12. Handling of fractional shares and shares not subscribed within the deadline: Not applicable 13. Rights and obligations of new shares issued this time: Same as original common shares issued 14. Purpose of capital increase funds: Attract and retain talent required by the company 15. Other matters to be noted: The base date for the capital increase and new share issuance is May 11, 115 (2026).