[CTBC Financial] On Behalf of CTBC Bank Co., Ltd. Japan Subsidiary The Tokyo Star Bank, Limited, Announcing MLT TMK Investment Case

1. Name and nature of the underlying asset (for preferred shares, the agreed issuance conditions such as dividend rate should also be specified): MLT TMK; Corporate bond 2. Date of occurrence of the event: 2026/04/28 3. Quantity of trading units, price per unit, and total transaction amount: Not applicable, not applicable, JPY 260,000,000 4. Counterparty and its relationship with the company (if the counterparty is a natural person and not a related party of the company, their name may be omitted): MLT TMK; Non-related party 5. If the counterparty is a related party, the reasons for selecting the related party as the transaction object, the previous owner of the transfer, the relationship between the previous owner, the company, and the counterparty, the date of the previous transfer, and the transfer amount should be announced: Not applicable 6. If the owner of the trading target has been a related party of the company within the past five years, the acquisition and disposal dates, prices, and relationship with the company at the time of the transaction should be announced: Not applicable 7. Matters related to the disposal of claims (including types of collateral accompanying the disposed claims, and if any disposed claim belongs to a related party, the name of the related party and the book value of the disposed claim for that related party should be announced): Not applicable 8. Disposal gains (or losses) (not applicable to the acquisition of marketable securities) (those deferred should list and explain the recognition situation): Not applicable 9. Delivery or payment terms (including payment period and amount), contract restrictions, and other important agreed matters: Handled according to contract provisions. Other important agreed matters: Handled according to contract provisions. 10. Decision-making method, basis for price determination, and decision-making unit for this transaction: Related conditions are handled according to contract provisions. Credit Risk Committee of The Tokyo Star Bank, Limited. 11. Net value per share of the acquired or disposed marketable securities company: Not applicable 12. If the difference between the reference price for private placement of marketable securities and the transaction amount per share is 20% or more: Not applicable 13. As of now, the accumulated quantity, amount, shareholding ratio, and restricted rights (e.g., pledge) of this trading security (including this transaction): Not applicable, JPY 560,000,000, Not applicable. Restricted equity status (e.g., pledge): Not applicable. 14. As of now, the proportion of private placement marketable securities investment (including this transaction) to the total assets and equity attributable to owners of the parent company in the company's latest financial report, and the amount of working capital in the latest financial report: Proportion of total assets 0.128%, Proportion of equity attributable to owners of the parent company 1.907%, Working capital amount: Not applicable. 15. Manager and brokerage fees: Not applicable 16. Specific purpose or use of acquisition or disposal: Investment purposes 17. Opinions of directors who expressed dissent to this transaction: Not applicable 18. Is this transaction a related party transaction: No 19. Date of board of directors' approval: Not applicable 20. Date of supervisor's approval or audit committee's consent: Not applicable 21. Accountant's opinion on non-reasonableness for this transaction: Not applicable 22. Name of accounting firm: Not applicable 23. Name of accountant: Not applicable 24. Accountant's practice certificate number: Not applicable 25. Other matters to be specified: JPY/TWD=0.1973 as of 2026/04/26.