1589 Yung-Kuan-KY

Release Date: August 4, 2026 Statement Date: August 3, 2026 Statement Time: 17:46:04 Company Code: 1589 Company Name: Yung-Kuan-KY Subject: Announcement of the Company's Actual and Forecasted Cash Inflows and Outflows for the Previous Month and the Next Three Months, Outstanding Short- and Long-Term Debt as of End of Previous Month, and Bank Financing Utilization Status Relevant Clause: Clause 51 Event Date: August 3, 2026 Details: 1. Event Date: 08/03/2026 2. Company Name: Yung-Kuan Energy Technology Group Limited 3. Relationship to Company:本公司 (The Company) 4. Cross-shareholding Ratio: Not applicable 5. Reason for Disclosure: In accordance with the requirements of the Taiwan Stock Exchange, the company discloses the actual and forecasted cash inflows and outflows for the previous month, and the outstanding balances of short- and long-term debt and bank financing utilization as of the end of the previous month (Unit: NT$ thousand).

(1) Actual and Forecasted Cash Flow for the Previous Month and the Next Three Months

Item July 2026 Aug 2026 Sep 2026 Oct 2026 (Actual) (Forecast) (Forecast) (Forecast) ---------------- ----------- ----------- ----------- ----------- Opening Balance 1,138,115 1,095,143 992,715 872,209 Cash Inflow 745,319 665,455 608,712 621,317 Cash Outflow 788,291 767,883 729,218 688,887 Closing Cash 1,095,143 992,715 872,209 804,639

(2) Outstanding Short- and Long-Term Debt and Bank Financing Utilization as of End of Previous Month

Item Credit Limit Drawn Amount Available Balance ---------------- ----------- ----------- ----------------- Short-term Loan 5,724,910 5,724,910 0 Medium-Long Term 7,366,205 7,366,205 0

6. Response Measures: None. 7. Other Matters to be Disclosed: The above figures are estimates based on the company's current situation.