Yankee Engineering Releases 2024 Second-Quarter Consolidated Financial Report

Release Date: August 6, 2024 Announcement Date: August 5, 2024 Announcement Time: 16:35:12 Company Code: 6691 Company Name: Yankee Engineering Subject: Board of Directors Approves 2024 Second-Quarter Consolidated Financial Report Compliance Clause: Clause 31 Date of Fact: August 5, 2024

Explanation: 1. Date of Report to or Resolution by the Board of Directors: 2024/08/05 2. Date of Approval by the Audit Committee: 2024/08/05 3. Period of Financial Report or Annual Self-Assessment Financial Information Reporting (XXX/XX/XX~XXX/XX/XX): 2024/01/01~2024/06/30 4. Cumulative Revenue from January 1 to the End of the Period (in thousands): 18,111,362 5. Cumulative Gross Profit (Loss) from January 1 to the End of the Period (in thousands): 3,304,304 6. Cumulative Operating Profit (Loss) from January 1 to the End of the Period (in thousands): 2,938,423 7. Cumulative Pre-Tax Net Profit (Loss) from January 1 to the End of the Period (in thousands): 2,954,393 8. Cumulative Net Profit (Loss) for the Period from January 1 to the End of the Period (in thousands): 2,316,715 9. Cumulative Net Profit (Loss) Attributable to Parent Company Owners from January 1 to the End of the Period (in thousands): 2,316,715 10. Cumulative Basic Earnings (Loss) per Share from January 1 to the End of the Period (in NTD): 17.46 11. Total Assets at the End of the Period (in thousands): 26,516,068 12. Total Liabilities at the End of the Period (in thousands): 19,101,288 13. Total Equity Attributable to Parent Company Owners at the End of the Period (in thousands): 7,414,780 14. Other Matters to be Stated: None