[Shin-Etsu] Announcement pursuant to the Regulations Governing the Acquisition and Disposal of Assets by Public Companies

1. Security Name: 2330 TSMC. 2. Transaction Date: 115/5/25. 3. Board Approval Date: N/A. 4. Other Approval Date: Chairman, May 25, 115. 5. Quantity, Price, Total Amount: 130,000 shares, NT$2,291.14 per share, Total NT$297,848,462. 6. Gain/Loss: N/A. 7. Relationship: None. 8. Cumulative Holdings: 130,000 shares, NT$297,848,462, 0.0005%. 9. Financial Ratios: 7.69% of total assets, 9.07% of equity. 10. Purpose: Investment. 11. Dissenting Opinions: None. 12. Related Party Transaction: No. 13. Counterparty: N/A. 14. Audit Committee: N/A. 15. Previous Disclosure: N/A. 16. Others: None.