Jentech Announces Subsidiary's Cumulative Investment in a Financial Product Exceeding NT$300 Million

1. Name and nature of the subject matter (if preferred shares, specify issuance terms such as dividend rate): Ruichuang Cash Currency Fund Class B

2. Date of occurrence: 115/5/8 ~ 115/7/9

3. Board approval date: Not applicable

4. Other approval dates: Approval level: Executed according to company authorization May 8, 2026 (Minguo Year 115)

5. Transaction quantity, unit price, and total transaction amount: Number of units: 80,000,000 Unit price: RMB 1 Total transaction amount: RMB 80,000,000 (NT$374,880,000; exchange rate 4.686)

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): Counterparty: Ruichuang Fund Company Relationship with 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 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 claims (including types of collateral attached to the disposed claim; if the disposed claim is to a related party, disclose the name of the related party and the book value of the claim disposed): Not applicable

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

11. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: Full payment via cash remittance None

12. Decision-making method for this transaction, reference basis for price determination, and decision-making unit: Executed according to company authorization

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

14. Cumulative number, amount, ownership percentage, and rights restriction status (e.g., pledge) of the securities held to date (including this transaction): Cumulative number of securities held: 92,253,126.97 Cumulative amount held: RMB 92,253,126.97 Ownership percentage: Not applicable Rights restriction status: None

15. Cumulative investment in securities under Article 3 of the 'Regulations on Acquisition or Disposition of Assets by Publicly Issued Companies' (including this transaction), 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 (Note 2): Percentage of total assets: 2.959% Percentage of equity: 4.864% Working capital amount: NT$2,743,997,398

16. Broker and brokerage fees: None

17. Specific purpose or use of the acquisition or disposal of securities: Principal-protected fixed-income financial investment

18. Dissenting opinions from directors regarding this transaction: None

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

20. Date of auditor's confirmation or audit committee approval: Not applicable

21. Whether the accountant issued a non-reasonableness opinion on 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: Not applicable

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

30. Other explanatory matters: None