【Sinon-KY】Announcement regarding the Company's convertible bond due on February 23, 2026, remaining unpaid, and this month's cash budget statement and previous month's cash budget execution status

1. Company Name (or Responsible Person's Name): Sinon Energy Technology Group Co., Ltd. 2. Relationship with the Company: The Company 3. Mutual Shareholding Ratio: Not applicable 4. Date of Credit Default: 2026/02/23 5. Amount of Credit Default: 1,035,605,020 6. Event Content of Credit Default: The Company's fourth unsecured convertible bonds in the Republic of China (referred to as: Sinon IV KY, code: 15894) matured on February 20, 2026, three years after issuance. Due to bondholders exercising their put options, totaling NTD 1,035,605,020, the Company was unable to repay as scheduled. 7. Response and Safeguard Measures: The Company will announce a repayment plan through the bond trustee bank and handle subsequent matters in accordance with relevant regulations. 8. Other Matters to be Specified (If the entity involved in the event or resolution is a public offering company or above, this material information also complies with Article 7, Paragraph 1 of the Enforcement Rules of the Securities and Exchange Act, which stipulates matters that have a significant impact on shareholders' equity or securities prices):

Cash Budget Execution for April 2026 (Unit: NTD Thousands)

Item April 2026 Cash Budget April 2026 Budget Execution May 2026 Cash Budget ----------------- --------------------- ------------------------ ------------------ Beginning Balance 1,303,297 1,303,297 1,201,388 Cash Inflow 674,985 723,746 604,708 Cash Outflow 967,386 825,655 869,113 Ending Cash 1,010,896 1,201,388 936,983