Tung Ho Steel Announces Board Resolution to Lease Real Estate Usage Rights to Subsidiary Tung Kuang Steel Structure Co., Ltd.

1. Name and nature of the subject property (e.g., land located in Section XX, Subsection XX, Beiqu District, Taichung City): Partial areas of 18 land parcels, including Kaohsiung City Qianzhen District Xinsheng Section No. 1709 and others, along with steel-framed factory buildings, container office units, and office equipment situated thereon.

2. Date of occurrence: 2026/6/9 ~ 2026/6/9

3. Board approval date: June 9, 2026

4. Other approval dates: Not applicable

5. Quantity of units (e.g., XX square meters, equivalent to XX ping), unit price, and total transaction amount: Subsidiary: Tung Kuang Steel Structure Co., Ltd. 1. Transaction quantity: Renewal of lease for a partial area of land in Qianzhen District, Kaohsiung City, totaling 18,804 square meters (approximately 5,688.21 ping). 2. Unit price: From July 1, 2026 to December 31, 2026, rent is charged in three-month periods. Each period: NT$2,257,650 (tax included) for land use; NT$13,500 (tax included) for movable equipment usage. 3. Total transaction amount: NT$4,542,300 (tax included).

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): 1. Counterparty: Tung Kuang Steel Structure Co., Ltd. 2. Relationship with the company: Subsidiary.

7. If the counterparty is a related party, disclose the reason for selecting such party, previous transferor, relationship among previous transferor, the company, and the counterparty, previous transfer date, and amount: 1. Reason for selecting counterparty: Aligned with the company’s overall planning and management considerations. 2. Previous transfer information: Not applicable. 3. Relationship among previous transferor, the company, and the counterparty: None. 4. Previous transfer date and amount: None.

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

9. Estimated gain (or loss) from disposal (not applicable for asset acquisition); if deferred, provide a table explaining recognition: Not applicable

10. Delivery or payment terms (including payment schedule and amounts), contractual restrictions, and other important provisions: Partial areas of 18 land parcels, including Kaohsiung City Qianzhen District Xinsheng Section No. 1709 and others, along with steel-framed factory buildings, container office units, and office equipment situated thereon. 1. Payment terms: As stipulated in the contract. 2. Lease term: Scheduled from July 1, 2026 to December 31, 2026, totaling six months. 3. Transaction amount: NT$4,542,300 (tax included). 4. Contractual restrictions and other important provisions: The previous lease term expired on June 30, 2026.

11. Decision method for this transaction (e.g., bidding, price comparison, negotiation), reference basis for pricing, and decision-making unit: 1. Pricing reference basis: Market rates. 2. Decision-making unit: Board of Directors.

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

13. Name of professional appraiser: Not applicable

14. Professional appraiser license number: Not applicable

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

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

17. Reason for not obtaining appraisal report: Not applicable

18. If there is a significant difference in appraisal results, explain the cause and include auditor’s opinion: Not applicable

19. Name of accounting firm: Not applicable

20. Name of accountant: Not applicable

21. Accountant license number: Not applicable

22. Broker and brokerage fees: Not applicable

23. Specific purpose or use of acquisition or disposal: For overall corporate planning and management considerations.

24. Dissenting director’s opinion on this transaction: None

25. Whether this transaction is a related-party transaction: Yes

26. Date of supervisor approval or audit committee consent: June 9, 2026

27. Whether this transaction involves acquiring real estate or usage rights from a related party: No

28. Valuation amount under Article 16 of the 'Asset Acquisition and Disposal Regulations for Publicly Issued Companies': Not applicable

29. Valuation amount under Article 17 of the same regulation 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: This lease agreement shall only be executed after approval by the Audit Committee and Board of Directors on June 9, 2026.