Ruisen Optoelectronics Announces Disposal of Right-of-Use Asset to Related Party

1. Name and nature of the subject property (e.g., land located at Block XX, Sub-block XX, North District, Taichung City): Partial building area of Unit B, No. 2, Section 2, Huanxi West Road, Xinshi District, Tainan City, Southern Taiwan Science Park (collectively referred to as the "Subject Property").

2. Date on which the event occurred: 115/7/30 ~ 115/7/30

3. Date of board approval: July 30, 2026 (Republic Era 115)

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: Original lease period: May 1, 2024 (R.O.C. 113) to April 30, 2030 (R.O.C. 119) Lease agreement to be terminated early as of September 30, 2026 (R.O.C. 115) Total monthly rent: TWD 1,079,178 (exclusive of tax) Reduction in right-of-use asset carrying amount: TWD 43,590,230 Reduction in lease liability: TWD 44,128,023

6. Counterparty and its relationship with the company (if the counterparty is an individual and not a related party, name disclosure may be omitted): Counterparty: Innolux Corporation Relationship with the company: Parent company of the company

7. If the counterparty is a related party, state the reason for selecting the related party as the transaction party, 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 related party: Consideration of group operational strategy Previous transferor, transfer price, and acquisition date: Not applicable

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

9. Estimated gain (or loss) from disposal (not applicable for asset acquisition) (if deferred, provide a table showing recognition schedule): Estimated gain: TWD 537,793

10. Delivery or payment terms (including payment periods and amounts), contractual restrictions, and other important agreements: Delivery or payment terms: As stipulated in the contract Contractual restrictions: None Other important agreements: None

11. Method of determining the transaction (e.g., bidding, price comparison, negotiation), reference basis for price determination, and decision-making unit: Transaction determination method: Negotiation based on market conditions Decision-making unit: Board of Directors

12. Name of professional appraisal 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 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. If there is a significant difference in appraisal results, state the reason and the accountant'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 the acquisition or disposal: Early termination of lease agreement

24. Opinion of any director who objected to the transaction: None

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

26. Date of supervisor approval or audit committee consent: July 30, 2026 (R.O.C. 115)

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

28. Evaluation price according to Article 16 of the "Asset Acquisition and Disposal Rules for Publicly Issued Companies": Not applicable

29. Evaluation price according to Article 17 of the same rules if the price in the previous item is lower than the transaction price: Not applicable

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

31. Other explanatory matters: None