TECO Subsidiary Donghui International Consulting Acquires Right-of-Use Asset from Dongan Asset Development Management

1. Name and nature of the subject property (e.g., land located at Section XX, Subsection XX, North District, Taichung City): 6th Floor, No. 19-8, Sanzhong Road, Nangang District, Taipei City

2. Date on which the fact occurred: 115/6/18 ~ 115/6/18

3. Date approved by the board of directors: June 18, 2026 (Minguo Year 115)

4. Other approval dates: Not applicable

5. Quantity of transaction units (e.g., XX square meters, converted to XX ping), unit price, and total transaction amount: Leased area: 274.31 ping. Monthly rent (excluding tax): NT$310,793. Right-of-use asset amount: NT$22,431,565.

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: Dongan Asset Development Management Co., Ltd. Relationship with the company: Related party.

7. If the counterparty is a related party, state the reason for selecting the related party as the transaction counterparty, the previous transferor, the relationship between the previous transferor and the company and the counterparty, the previous transfer date, and the transfer amount: Reason for selecting a related party: Due to operational needs. Previous transferor: Not applicable. Relationship between previous transferor and the company: Not applicable. Relationship between previous transferor and the counterparty: Not applicable. Previous transfer date: Not applicable. Transfer amount: Not applicable.

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

9. Expected gain (or loss) on disposal (not applicable for asset acquisition) (if deferred, list and explain recognition status): Not applicable.

10. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: Payment made monthly, each time NT$310,793 (excluding tax). Lease period: From July 1, 2026 (Minguo Year 115) to June 30, 2032 (Minguo Year 121).

11. Method of determining this transaction (e.g., bidding, price comparison, or negotiation), reference basis for price determination, and decision-making unit: Approved by the board of directors after bilateral negotiation.

12. Name of professional appraisal firm or company and appraisal amount: Not applicable.

13. Name of professional appraiser: Not applicable.

14. Professional appraiser’s license number: Not applicable.

15. Whether the appraisal report is for a limited price, specific price, or special price: No or not applicable

16. Whether the appraisal report has not yet been obtained: No or not applicable

17. Reason for not obtaining the appraisal report: Not applicable

18. Reasons for significant differences in appraisal results and auditor’s opinion: Not applicable.

19. Name of accounting firm: Not applicable.

20. Name of accountant: Not applicable.

21. Accountant’s license number: Not applicable.

22. Broker and brokerage fees: Not applicable.

23. Specific purpose or use of the acquisition or disposal: Due to operational needs.

24. Opinion of any director who objected to this transaction: Not applicable.

25. This transaction is a related-party transaction: Yes

26. Date of supervisor approval or audit committee consent: Not applicable. (Reason: Donghui International Consulting is not a publicly issued company and therefore not required to submit for supervisor approval under Article 15 of the 'Regulations Governing the Acquisition or Disposition of Assets by Publicly Issued Companies.')

27. This transaction involves acquiring real estate or its right-of-use asset from a related party: Yes

28. Valuation assessed under Article 16 of the 'Regulations Governing the Acquisition or Disposition of Assets by Publicly Issued Companies': Not applicable

29. Valuation assessed under Article 17 of the same regulations if the valuation under the previous item is lower than the transaction price: Not applicable

30. Previous date of material information disclosure regarding the same event: Not applicable

31. Other explanatory matters: None.