Summer Palace Announces Unaudited Consolidated Financial Results for May 2026

1. Date of Event: 2026/06/12 2. Company Name: Summer Palace International Development Co., Ltd. 3. Relationship with Company (Please enter '本公司' or 'Subsidiary'):本公司 4. Cross-shareholding Ratio: Not applicable 5. Reason for Occurrence: Announcement of unaudited consolidated financial results for May 2026 6. Response Measures: None 7. Other Matters to be Disclosed (If the entity involved in the event or resolution is a publicly issued company or above, this material information also meets the criteria under Article 7, Paragraph 9, Item 9 of the Enforcement Rules of the Securities and Exchange Act, which pertains to matters having a significant impact on shareholders' equity or securities prices):

(1) Accounting Item (Unit: Thousand NTD) May 2026 Jan–May 2026 ------------------------------------ --------- ------------- Consolidated Net Operating Revenue 48,493 229,599 Consolidated Operating Income/(Loss) (9,385) (48,386) Consolidated Pre-tax Income/(Loss) (9,487) (50,542) Net Income/(Loss) Attributable to Owners of Parent (8,436) (44,525) EPS Attributable to Owners of Parent (NTD) (0.06) (0.31)

(2) The unaudited figures have not been reviewed or audited by accountants. The actual financial results will be based on the audited or reviewed financial reports to be announced by the company. This is hereby clarified.