CTBC Financial Holding Announces Subsidiary CTBC Securities Approves Subscription to CTBC Asia Limited's Cash Capital Increase of HKD 250 Million

1. Name and nature of the subject matter (for preferred shares, specify issuance terms such as dividend rate): Ordinary shares of CTBC Asia Limited

2. Date of occurrence: August 26, 2026

3. Board approval date: August 26, 2026

4. Other approval dates: Not applicable

5. Number of units, unit price, and total transaction amount: (1) Number of shares: 250,000,000 (2) Unit price per share: HKD 1 (3) Total amount: HKD 250,000,000

6. Counterparty and its relationship with the company (if the counterparty is an individual and not a related party, name disclosure may be omitted): CTBC Asia Limited

7. If the counterparty is a related party, state the reason for selecting them, previous transferor, relationship among previous transferor, company, and counterparty, transfer date, and amount: Not applicable

8. If the owner of the subject matter was a related party of the company within the past five years, disclose the related party’s acquisition and disposal date, price, and relationship with the company at the time: Not applicable

9. Matters related to the disposal of receivables (including types of collateral attached; if receivables from related parties are involved, disclose the name and book value of such receivables): Not applicable

10. Gain (or loss) from disposal (not applicable for acquisition of securities; if deferred, provide a table showing recognition): Not applicable

11. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: Subject to regulatory approval, share subscription payment will be completed accordingly.

12. Decision-making method for the transaction, basis for price determination, and decision-making body: Approved by the board of directors of CTBC Securities.

13. Net asset value per share of the securities-issuing company: Not applicable

14. Cumulative holdings of the securities involved in this transaction (including this transaction) to date, including quantity, amount, ownership percentage, and any restrictions on rights (e.g., pledge status): (1) CTBC Securities holds 426,526,116 shares of CTBC Asia Limited; (2) Amount: HKD 426,526,116; (3) Ownership percentage: 100%; (4) Number of pledged shares: 0

15. Proportion of securities investments (including this transaction) under Article 3 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies' to the company’s total assets and equity attributable to owners of the parent in the latest financial statements, and the amount of working capital in the latest financial statements: Percentage of total assets: 30.44% Percentage of equity attributable to owners of the parent: 234.58% Working capital in latest financial statements: approximately TWD 17.636 billion

16. Broker and brokerage fees: None

17. Specific purpose or use of the acquisition or disposal of securities: To strengthen the operational capital of CTBC Asia Limited.

18. Dissenting opinions from directors regarding this transaction: None

19. Is this transaction a related-party transaction: Yes

20. Date of auditor’s acknowledgment or audit committee approval: August 26, 2026

21. Did the accountant issue a non-concurrence opinion on this transaction: Not applicable

22. Name of accounting firm: Not applicable

23. Name of accountant: Not applicable

24. Accountant’s license number: Not applicable

25. Does this involve a change in business model: No

26. Explanation of business model change: Not applicable

27. Transaction status with the counterparty in the past year and expected in the next year: Not applicable

28. Source of funds: Not applicable

29. Previous date of material information disclosure on the same event: Not applicable

30. Other explanatory matters: Exchange rate conversion uses HKD to TWD at 1:4.135.