[Shing Kong Steel] Announcement of Common Stock Acquisition by Subsidiary Xinyuan Investment

1. Security Name: TSMC Common Stock 2. Transaction Date: 114/5/21 - 115/5/20 3. Board Approval Date: N/A 4. Other Authorization Date: Authorized by: Chairman Date: May 20, 2026 5. Transaction Volume, Unit Price, and Total Amount: Volume (shares): 189,000 Unit Price (TWD): 1,710.18 Total Amount (TWD): 323,223,643 6. Gain/Loss on Disposal: N/A 7. Relationship with the Target Company: None 8. Cumulative Holding (including this transaction): Holding Balance: 131,000 shares Amount: 286,235,000 TWD Ownership Percentage: 0.0005%, Encumbrances: None 9. Asset Ratio (per 'Regulations Governing the Acquisition and Disposal of Assets by Public Companies'): Ratio to Total Assets: 1.11% Ratio to Equity Attributable to Owners of Parent: 2.71% Operating Capital: 4,163,173,000 TWD 10. Specific Purpose: Investment Portfolio 11. Dissenting Opinion by Directors: N/A 12. Related Party Transaction: No 13. Transaction Counterparty Relationship: N/A 14. Audit Committee Approval Date: N/A (Authorized by Chairman) 15. Date of Previous Material Information Disclosure: N/A 16. Other Remarks: None