[Jixiangquan] Announcement by subsidiary Haohan Power Co., Ltd. on disposal of marketable securities

1. Securities name: Unimicron Common Stock 2. Transaction date: 2026/5/6~2026/5/6 3. Date of board resolution: Not applicable 4. Other approval date: Approval level: Chairman May 6, 2026 (ROC calendar) 5. Transaction quantity, price per unit, and total transaction amount: Disposed quantity (thousands of shares): 345 Disposed price per unit (NTD): 862.47 Total disposed amount (NTD): 297,552,000 6. Disposal gain (or loss) (not applicable for acquisition of marketable securities): Disposal gain: TWD 169,465 thousand 7. Relationship with the transacted company: None 8. As of now, the accumulated quantity, amount, shareholding ratio, and restricted rights (e.g., pledge) of this security (including this transaction): Held balance: 0 shares, Amount: 0 NTD Shareholding ratio: 0%, Restricted rights: None 9. As of now, based on Article 3 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies," the proportion of investment in marketable securities (including this transaction) to the company's most recent financial report's total assets and owners' equity attributable to the parent company, and the amount of working capital in the most recent financial report: Proportion to total assets: 193.28%; Proportion to owners' equity attributable to the parent company: 196.53%; Working capital amount: TWD 279,136 thousand 10. Specific purpose of acquisition or disposal: Investment portfolio 11. Opinions of dissenting directors on this transaction: Not applicable 12. This transaction is a related party transaction: No 13. Counterparty and its relationship with the company: Not applicable 14. Date of approval by supervisors or audit committee: Not applicable 15. Date of previous material information disclosure for the same event: Not applicable 16. Other matters to be specified: None Keywords: Material Information