5225 Tung Tech-KY

Announcement Date: August 8, 2026 Statement Date: August 7, 2026 Statement Time: 14:04:09 Company Code: 5225 Company Name: Tung Tech-KY Subject: Endorsement Guarantee by the Company for Tung Ah Electronics (Hong Kong) Co., Ltd. Applicable Clause: Item 22 Factual Event Date: August 7, 2026

Details: 1. Factual Event Date: 08/07/2026

2. Information on the Endorsed Entity: (1) Company Name: Tung Ah Electronics (Hong Kong) Co., Ltd. (2) Relationship with Guarantor: Parent-Subsidiary (3) Endorsement Guarantee Limit (in thousand units): 12,663,828 (4) Previous Outstanding Guarantee Balance (in thousand units): 388,560 (5) Amount of New Guarantee Added This Time (in thousand units): 679,980 (6) Outstanding Guarantee Balance as of Factual Event Date (in thousand units): 1,068,540 (7) Actual Amount Drawn by the Endorsed Company (in thousand units): 106,804 (8) Reason for the New Guarantee Addition: To meet the working capital requirements of Tung Ah Electronics (Hong Kong) Co., Ltd.

3. Collateral Provided by the Endorsed Company: (1) Description: None (2) Value (in thousand units): 0

4. Latest Financial Statement Data of the Endorsed Company: (1) Capital (in thousand units): 325,464 (2) Accumulated Profit/Loss (in thousand units): 198,631

5. Conditions for Release from Guarantee Liability: (1) Condition: Expiration of the credit agreement between Tung Ah Electronics (Hong Kong) Co., Ltd. and its financial institution (2) Date: Maturity date of the credit agreement

6. Total Endorsement Guarantee Limit (in thousand units): 15,829,785

7. Total Outstanding Guarantee Balance as of Factual Event Date (in thousand units): 1,473,290

8. Ratio of Outstanding Guarantee Balance to the Net Asset Value in the Latest Financial Statements of the Publicly Listed Company: 46.54%

9. Combined Ratio of Outstanding Guarantees, Long-Term Investments, and Fund Lending to the Net Asset Value in the Latest Financial Statements: 52.36%

10. Other Matters to be Disclosed: None