2890 SinoPac Financial Holdings Announces Board Resolution to Subscribe to Private Placement of SinoPac Securities Common Shares

Announcement Date: June 27, 2026 Release Date: June 26, 2026 Release Time: 17:27:58 Company Code: 2890 Company Name: SinoPac Financial Holdings Subject: SinoPac Financial Holdings announces board resolution to subscribe to private placement of common shares by SinoPac Securities Applicable Clause: Clause 24 Event Date: June 26, 2026

1. Name and nature of the subject matter (for preferred shares, specify issuance terms such as dividend rate): Private placement of common shares of SinoPac Securities

2. Event date: 06/26/2026

3. Number of units, unit price, and total transaction amount: Number of shares: up to 481 million shares Unit price: tentatively NT$26 per share Total transaction amount: approximately NT$12.5 billion

4. Counterparty and its relationship with the company (if the counterparty is a natural person and not a related party, name disclosure may be omitted): SinoPac Securities; a 100% owned subsidiary of SinoPac Financial Holdings

5. If the counterparty is a related party, state the reason for selection, previous transferor, relationships among the previous transferor, the company, and the counterparty, transfer date, and amount: To strengthen the capital structure, capital adequacy ratio, and reduce the debt-to-equity ratio of subsidiary SinoPac Securities to meet funding needs for operations and business expansion, and to maintain a unified shareholder structure; therefore, the parent company SinoPac Financial Holdings will fully subscribe to this capital increase; not applicable otherwise.

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

7. Matters related to disposal of receivables (including types of collateral, and if receivables from related parties, disclose names and book amounts): Not applicable

8. Gain (or loss) from disposal (not applicable for acquisition of securities) (if deferred, provide details of recognition): Not applicable

9. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: Payment terms: full payment in cash Contractual restrictions and other important terms: none

10. Decision-making method for the transaction, basis for price determination, and decision-making body: Board resolution

11. Net asset value per share of the securities-issuing company: NT$25.36

12. Is the private placement reference price more than 20% different from the transaction price per share?: No

13. Cumulative holdings (including this transaction) to date: number, amount, ownership percentage, and any restrictions on rights (e.g., pledge status): Number: up to 481 million shares Amount: approximately NT$12.5 billion Ownership percentage: 100% Rights restrictions: none

14. Proportion of cumulative private placement securities investment (including this transaction) to total assets and equity attributable to owners of the parent in the company’s latest financial statements, and the amount of working capital in the latest financial statements: Percentage of total assets: 12.09% Percentage of shareholders’ equity: 14.61% Working capital amount in latest financial statements: not applicable

15. Manager and brokerage fees: Not applicable

16. Specific purpose or use of the acquisition or disposal of securities: To strengthen the capital structure, capital adequacy ratio, and reduce the debt-to-equity ratio of subsidiary SinoPac Securities to meet funding needs for operations and business expansion.

17. Dissenting opinions from directors regarding this transaction: Not applicable

18. Is this transaction a related-party transaction?: Yes

19. Date approved by the board of directors: 06/26/2026

20. Date acknowledged by supervisors or approved by audit committee: 06/22/2026

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

22. Name of accounting firm: Not applicable

23. Name of accountant: Not applicable

24. Accountant license number: Not applicable

25. Other disclosures: The issuance number of shares, per-share price, and capital increase benchmark date, if changed, shall be authorized and approved by the Chairman of SinoPac Securities.