[Yung Hung Bio-tech] Announcement of the Company's Lease of Right-of-Use Assets for Real Estate from a Related Party (Supplementary Announcement of Change in Transaction Counterparty)

1. Name and nature of the target (e.g., land parcel in XX section, XX subsection, Beitun District, Taichung City): 11th floor office, No. 181, Section 3, Minquan East Road, Songshan District, Taipei City (33.5 ping) 2. Date of occurrence of the event: 2026/5/6~2026/5/6 3. Date of board of directors' resolution: August 1, 2025 (ROC calendar 114) 4. Other approval dates: Not applicable 5. Quantity of transaction units (e.g., XX square meters, equivalent to XX ping), price per unit, and total transaction amount: Leased area: 33.5 ping, rent per ping: NT$1,552.24 (excluding tax) Monthly rent: NT$52,000 (excluding tax), right-of-use asset amount: NT$1,823,641. 6. Transaction counterparty and its relationship with the company (if the transaction counterparty is a natural person and not a related party of the company, their name may be omitted): Transaction counterparty: Yung Shin International Investment Holding Co., Ltd. Relationship with the company: Parent company 7. If the transaction counterparty is a related party, the reason for selecting the related party as the transaction object, the previous owner, the relationship between the previous owner and the company and the transaction counterparty, the previous transfer date, and the transfer amount shall also be announced: Reason for selecting the related party as the transaction object: The original owner changed on 2026/7/1. Previous owner: Not applicable. 8. If the owner of the transaction target has been a related party of the company within the past five years, the acquisition and disposal dates, prices, and relationship with the company at the time of the transaction of the related party shall also be announced: Not applicable 9. Estimated disposal profit (or loss) (not applicable to asset acquisition) (deferred items should be listed to explain recognition status): Not applicable 10. Delivery or payment terms (including payment period and amount), contract restriction clauses, and other important agreements: Not applicable 11. Method of determining this transaction (e.g., tender, price comparison, or negotiation), reference basis for price determination, and decision-making unit: 1. Reference basis for price determination: Reference surrounding market rental rates 2. Decision-making unit: Board of Directors 12. Name of professional valuation firm or company and its valuation amount: Not applicable 13. Name of professional appraiser: Not applicable 14. Professional appraiser's license number: Not applicable 15. Is the appraisal report a limited price, specific price, or special price: No or Not applicable 16. Has the appraisal report not yet been obtained: No or Not applicable 17. Reasons for not yet obtaining the appraisal report: Not applicable 18. If there is a significant difference in the appraisal results, the reason for the difference and the 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 acquisition or disposal: For use as self-occupied business premises 24. Opinion of directors who expressed dissent to this transaction: None. 25. Is this transaction a related party transaction: Yes 26. Date of approval by supervisors or audit committee: July 31, 2025 (ROC calendar 114) 27. Is this transaction the acquisition of real estate or its right-of-use asset from a related party: No 28. Price evaluated according to Article 16 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies": Not applicable 29. If the price evaluated in the preceding paragraph is lower than the transaction price, the price evaluated according to Article 17 of the same regulations: Not applicable 30. Date of previous material information announcements on the same event: July 1, 2025 (ROC calendar 114) August 1, 2025 (ROC calendar 114) 31. Other explanatory matters: The original lessor, Yung Shin Formosa Investment Holding Co., Ltd., merged this right-of-use asset into Yung Shin International Investment Holding Co., Ltd. on July 1, 2026 (ROC calendar 115).