2327 Yageo*: Subsidiary Announces Acquisition of Wealth Management Product

Announcement Date: July 22, 2026 Statement Date: July 21, 2026 Statement Time: 18:07:26 Company Code: 2327 Company Name: Yageo*

Subject: Announcement by subsidiary Dongguan Chilisin Electronics Co., Ltd. regarding acquisition of a financial product Applicable Clause: Clause 20 Factual Date: July 21, 2026

Details:

1. Name and nature of the subject matter (for preferred shares, specify dividend rate and other terms): China Construction Bank Structured Wealth Management Product

2. Factual Date: June 16, 2026 – July 21, 2026

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Not applicable July 21, 2026

5. Transaction quantity, unit price, and total transaction amount: Number of units and unit price: Not applicable Total transaction amount: RMB 80,000,000

6. Counterparty and its relationship with the company (if individual and not a related party, name may be omitted): Counterparty: China Construction Bank Relationship with company: None

7. If counterparty is a related party, reason for selection and prior owner details: Not applicable

8. If the subject asset was owned by a related party within the past five years, disclose acquisition/disposal date, price, and relationship: Not applicable

9. Matters related to disposal of receivables (including collateral types; if receivables from related parties, disclose names and book amounts): Not applicable

10. Gain (or loss) from disposal (not applicable for acquisition of securities) (deferred gains/losses to be explained in table): Not applicable

11. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: Full payment made at once

12. Decision-making method for this transaction, reference basis for pricing, and decision-making unit: Based on internal approval authority of the company

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 to date, amount, ownership percentage, and any restricted rights (e.g., pledge status): Cumulative holding amount: RMB 60,000,000 Rights restriction status: None

15. Proportion of securities investments (including this transaction) under Paragraph 3 of the “Regulations on Acquisition or Disposition of Assets by Publicly Issued Companies” to total assets and equity attributable to owners of parent in the latest financial statements, and the amount of working capital in the latest financial statements: Percentage of total assets: 0.08% Percentage of equity attributable to owners of parent: 0.17% Working capital in latest financial statements: NT$ -76,476,038 thousand

16. Broker and brokerage fees: Not applicable

17. Specific purpose or use of the acquisition or disposal: Wealth management investment

18. Dissenting opinions from directors regarding this transaction: None

19. Is this a related-party transaction? No

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

21. Did the accountant issue a non-reasonable opinion? Not applicable

22. Name of accounting firm: Not applicable

23. Name of accountant: Not applicable

24. Accountant’s license number: Not applicable

25. Does this involve a change in business model? No

26. Explanation of business model change: Not applicable

27. Transaction history 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