[Tong Hsing Electronic] Announcement of the Company's Disposal of Financial Products

1. Name and nature of underlying asset: Name: Capital Securities 30-day TAIBIR 02 range interest-bearing principal-guaranteed product. Nature: 100% principal-guaranteed structured product. 2. Date of occurrence: 2026/04/17 3. Date of board of directors resolution: N/A 4. Other authorization date: According to authorization limits on 2026/04/17. 5. Transaction volume, unit price, and total transaction amount: Underlying asset and amount: Capital Securities 30-day TAIBIR 02 principal-guaranteed product - NT$900,000,000. 6. Counterparty and relationship to the company: Capital Securities Corp.; non-related party. 7. Reason for selecting related party as counterparty: N/A 8. Previous owners within the past five years: N/A 9. Matters related to disposal of creditor's rights: N/A 10. Gain or loss from disposal: Disposal gain is NT$2,884,932. 11. Terms of delivery or payment, and restrictive covenants: Transaction price will be remitted to the designated account on the transaction day; no major restrictions. 12. Decision-making process and reference basis for pricing: Handled according to broker quotes and company authorization limits. 13. Net worth per share of the underlying company: N/A 14. Cumulative holding quantity, amount, holding percentage, and restriction of rights: Cumulative holding: Capital Securities 30-day TAIBIR 02 principal-guaranteed product - NT$1,210,000,000. Restriction: None. 15. Ratio of securities investment to total assets and equity, and working capital: 6.74% of total assets; 8.62% of equity. Working capital is NT$6,396,057 thousand. 16. Broker and brokerage fee: None. 17. Concrete purpose of acquisition or disposal: Financial investment. 18. Dissenting directors' opinions: N/A 19. Is this a related-party transaction: No. 20. Date of acknowledgement by supervisors or Audit Committee: N/A 21. Did the CPA issue an unreasonable opinion: N/A 22. Name of accounting firm: N/A 23. Name of CPA: N/A 24. CPA certificate number: N/A 25. Does it involve business model changes: No. 26. Business model change explanation: N/A 27. Transactions with the counterparty in the past year and expected in the next year: N/A 28. Source of funds: Own funds. 29. Date of previous major message on same event: N/A 30. Other explanatory matters: None.