2379 Realtek | Subsidiary Realtek Singapore Announces Board Resolution on Fund Lending

Announcement Date: July 31, 2026 Statement Date: July 30, 2026 Statement Time: 17:49:47 Company Code: 2379 Company Name: Realtek Subject: Announcement on behalf of subsidiary Realtek Singapore regarding board resolution on fund lending matters Applicable Clause: Clause 23 Factual Date: July 30, 2026

Details: 1. Factual Date: 07/30/2026

2. Recipient of Fund Lending: (1) Company Name: Bluocean Inc. (2) Relationship with Lending Entity: Realtek Singapore is a 100% subsidiary of our company; Bluocean is a 100% subsidiary of Realtek Singapore. (3) Lending Limit (in thousand NT$): 20,172,972 (4) Previous Outstanding Balance (in thousand NT$): 0 (5) Amount of New Lending (in thousand NT$): 3,230,500 (6) Whether the board has authorized the chairman to conduct multiple disbursements or revolving use of funds to the same borrower: Yes (7) Outstanding Lending Balance as of Factual Date (in thousand NT$): 3,230,500 (8) Reason for New Lending: Operational needs

3. Collateral Provided by Borrower: (1) Description: None (2) Value (in thousand NT$): 0

4. Latest Financial Statement of Borrower: (1) Capital (in thousand NT$): 3,503,662 (2) Accumulated Profit/Loss (in thousand NT$): 714,911

5. Interest Calculation Method: Lending interest rate shall not be lower than the highest short-term borrowing rate from financial institutions at the time of lending.

6. Repayment Terms: (1) Conditions: Principal and interest to be repaid in full upon maturity (2) Date: July 29, 2029

7. Total Outstanding Lending Balance as of Factual Date (in thousand NT$): 18,558,333

8. Ratio of Outstanding Lending Balance to Parent Company's Net Equity in Latest Financial Statement: 0.37

9. Source of Lending Funds: Funds from the subsidiary itself

10. Other Matters to be Disclosed: None