[SinoPac] Supplemental Announcement by SinoPac Holdings regarding the issuance of unsecured subordinated ordinary corporate bonds by its subsidiary, SinoPac Securities

1. Date of Board of Directors resolution: NA
2. Name: SinoPac Securities Co., Ltd. 2026 (115th year of the Republic of China) 1st Unsecured Subordinated Ordinary Corporate Bonds (Supplement)
3. Whether general reporting for bond issuance is adopted: No
4. Total issuance amount: 3 billion TWD (Supplement)
5. Face value per unit: 1 million TWD
6. Issuance price: Issued at par value
7. Issuance period: 115/06/12 - 125/06/12 (Supplement)
8. Issuance interest rate: Fixed annual interest rate of 2.41% (Supplement)
9. Type, name, amount, and terms of collateral: N/A
10. Use of funds and operation plan: Strengthen financial structure and improve the company's capital adequacy ratio and liquidity ratio
11. Underwriting method: Entrust securities underwriters to conduct public underwriting via negotiated sales
12. Bond trustee: Taishin International Bank (Supplement)
13. Underwriting or distributing institution: SinoPac Securities acts as the lead underwriter
14. Guarantor: N/A
15. Agent for principal and interest repayment: Taishin International Bank (Supplement)
16. Certification agency: N/A
17. Conversion terms: N/A
18. Put options: N/A
19. Call options: N/A
20. Conversion/exchange/warrant exercise base date: N/A
21. Potential dilution: N/A
22. Rationality of fundraising after cash capital reduction: N/A
23. Other items to be stated: None