[WT Micro] Board of Directors Approves Issuance of Second Overseas Unsecured Convertible Bonds

1. Date of Board Resolution: 2026/05/22 2. Name: WT Microelectronics Co., Ltd. Second Overseas Unsecured Convertible Bonds 3. Whether Shelf Registration is Used: No 4. Total Issuance Amount: Provisionally capped at 500 million USD (including over-allotment). The bonds will be converted at a fixed rate for repayment/redemption. 5. Par Value per Note: Provisionally 200,000 USD or multiples thereof. 6. Issuance Price: Provisionally 100% of par value. 7. Term: Provisionally up to 2 years from the date of issuance. 8. Coupon Rate: Provisionally 0%. 9. Guarantees: Not applicable. 10. Purpose of Proceeds: To cover foreign currency procurement fund requirements. 11. Distribution Method: To be issued outside the Republic of China, in accordance with local laws and international market practices. 12. Trustee: Citicorp International Limited 13. Lead Underwriters: International Lead Manager: Citigroup Global Markets Limited; Domestic Lead Manager: Yuanta Securities Co., Ltd. 14. Guarantor: Not applicable. 15. Paying Agent: Citibank, N.A., London Branch 16. Certification Institution: Not applicable. 17. Conversion/Buyback/Put conditions: Authorized to the Chairman and/or their designees. 18. Dilution: Subject to the conversion premium at the time of actual issuance. 19. Other Details: Authority to handle all aspects of the issuance and adjustments has been delegated to the Chairman.