Dingxuan-KY Announces Subsidiary Longyang Electronics (Kunshan) Disposal of Structured Deposit Product

1. Name and nature of the subject matter (if preferred shares, specify issuance conditions such as dividend rate): Gongying Huixin FX-Linked RMB Structured Deposit A33638 Period C26A33638

2. Date of occurrence: 2026/6/18 ~ 2026/6/18

3. Board approval date: Not applicable

4. Other approval dates: Approval level: Executed in accordance with company's internal authorization June 18, 2026

5. Transaction quantity, unit price, and total transaction amount: A33638 Period C26A33638 63-day: RMB 40 million

6. Counterparty and its relationship with the company (if the counterparty is a natural person and not a related party of the company, name disclosure may be omitted): CTBC Bank Co., Ltd.; Relationship with the company: None

7. If the counterparty is a related party, disclose the reason for selecting the related party, the previous transferor, the relationship between the previous transferor and the company and the counterparty, the previous transfer date, and the transfer amount: Not applicable

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

9. Matters related to the disposal of receivables (including types of collateral attached to the disposed receivables; if disposal involves receivables from related parties, disclose the name of the related party and the book value of the receivables disposed): Not applicable

10. Gain (or loss) from disposal (not applicable for acquisition of securities) (if previously deferred, explain recognition in a table): Approximately TWD 560 thousand

11. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: One-time full payment

12. Decision-making method for this transaction, reference basis for price determination, and decision-making unit: Executed in accordance with company's internal authorization

13. Net asset value per share of the securities-issuing company acquired or disposed: Not applicable

14. Cumulative holdings (including this transaction) of the securities involved, as of now, including quantity, amount, ownership percentage, and any restrictions on rights (e.g., pledge status): Quantity: Not applicable Amount: RMB 40 million Ownership percentage: Not applicable Restrictions on rights: None Cumulative holding amount: RMB 40 million

15. Cumulative securities investments (including this transaction) under Article 3 of the 'Regulations on Acquisition or Disposal of Assets by Publicly Issued Companies' as a percentage of 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: (1) Percentage of total assets: 24.028% (2) Percentage of equity attributable to owners of the parent: 46.852% (3) Working capital amount: TWD 6,975,964 thousand

16. Broker and brokerage fees: Not applicable

17. Specific purpose or use of the acquisition or disposal: Short-term investment

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

19. Whether this transaction is a related-party transaction: No

20. Date of supervisor's approval or audit committee's consent: Not applicable

21. Whether the auditor issued a non-reasonableness opinion on this transaction: Not applicable

22. Name of the accounting firm: Not applicable

23. Name of the auditor: Not applicable

24. Auditor's license number: Not applicable

25. Whether it involves a change in business model: No

26. Explanation of business model change: Not applicable

27. Transaction status with the counterparty over the past year and expected within the next year: Not applicable

28. Source of funds: Internal funds

29. Previous date of material information disclosure on the same event: Not applicable

30. Other explanatory matters: None