SinoPac Holdings Announces Subsidiary SinoPac Commercial Bank's Participation in 'Financing Guarantee Mechanism Supporting Corporate Investment in the U.S.'

Announcement Date: June 27, 2026 Statement Date: June 26, 2026 Statement Time: 17:53:26 Company Code: 2890 Company Name: SinoPac Holdings Subject: SinoPac Financial Holdings announces, on behalf of its subsidiary SinoPac Commercial Bank, the board resolution to participate in the 'Financing Guarantee Mechanism Supporting Corporate Investment in the U.S.' Applicable Clause: Item 51 Factual Date: June 26, 2026

Details: 1. Factual Date: June 26, 2026 2. Company Name: SinoPac Commercial Bank Co., Ltd. 3. Relationship with Company (Please enter '本公司' or 'Subsidiary'): Subsidiary 4. Cross-shareholding Ratio: 100% 5. Reason for Occurrence: The board of directors of SinoPac Commercial Bank resolved to participate in the 'Financing Guarantee Mechanism Supporting Corporate Investment in the U.S.' initiated by the National Development Council, planning to contribute USD 25 million. 6. Response Measures: Not applicable 7. Other Matters to be Disclosed (If the subject of the event or resolution is a publicly issued company or above, this major information simultaneously meets the criteria under Article 7, Paragraph 9 of the Enforcement Rules of the Securities and Exchange Act, regarding matters having significant impact on shareholders' equity or securities prices): (1) Responding to government policy to support corporate investment in the U.S., thereby expanding business capacity. (2) By participating in the 'Financing Guarantee Mechanism Supporting Corporate Investment in the U.S.', secure sufficient financing guarantee quotas and reduce credit risk. (3) Actual terms shall be subject to the formal signed contract.