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

1. Name and nature of the subject matter (for preferred shares, specify issuance conditions such as dividend rate): Gongying Huixin FX-Linked USD Structured Deposit A41403 Period C26A41403

2. Date of occurrence: 09/11/2026 ~ 09/11/2026

3. Board approval date: Not applicable

4. Other approval dates: Approval level: Executed according to company's authorization authority September 11, 2026

5. Transaction quantity, unit price, and total transaction amount: A41403 Period C26A41403 60-day: USD 40 million

6. Counterparty and its relationship with the company (if the counterparty is an individual and not a related party of the company, name disclosure may be omitted): China Trust 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 among the previous transferor, the company, and the counterparty, the previous transfer date, and transfer amount: Not applicable

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

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

10. Gain (or loss) from disposal (not applicable for acquisition of securities) (if previously deferred, explain recognition status in a table): NT$523,000

11. Delivery or payment terms (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 according to company's authorization authority

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: USD 40 million Ownership percentage: Not applicable Rights restriction status: None Cumulative holding amount: USD 40 million

15. Cumulative investment in securities listed under Article 3 of the 'Regulations on Acquisition or Disposal of Assets by Publicly Issued Companies' (including this transaction) as a percentage of total assets and equity attributable to owners of the parent company in the company's latest financial statements, and the amount of working capital in the latest financial statements (Note 2): (1) Percentage of total assets: 8.322% (2) Percentage of equity attributable to owners of the parent company: 16.463% (3) Working capital amount: NT$6,897,567,000

16. Broker and brokerage fees: Not applicable

17. Specific purpose or use of 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 approval or audit committee consent: Not applicable

21. Whether the accountant issued a non-reasonableness opinion for this transaction: Not applicable

22. Name of accounting firm: Not applicable

23. Name of accountant: Not applicable

24. Accountant'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 in the past year and expected in the next year: Not applicable

28. Source of funds: Internal funds

29. Previous date of material information announcement regarding the same event: Not applicable

30. Other explanatory matters: None