[Casetek] Announcement of Subsidiary's Cumulative Securities Acquisition Exceeding 20% of Paid-in Capital

1. Name of security: Shanghai Stock Exchange 1-day Treasury Bond Reverse Repo GC001, Code 204001. 2. Date of transaction: 115/5/29. 3. Date of board approval: N/A. 4. Other approval date: Chairman approval, 115/5/29. 5. Transaction volume, price, and total amount: Total 162,465,000 RMB (approx. NT$748,786,000). 6. Disposal gain/loss: N/A. 7. Relationship: Non-related party. 8. Cumulative holdings: No pledges. 9. Ratio of investment to assets: 15.05% of total assets, 20.96% of equity. 10. Purpose: Investment. 11. Dissenting opinions: None. 12. Related party transaction: No. 13. Counterparty: N/A. 14. Audit committee approval: N/A. 15. Previous disclosure: N/A. 16. Other: None.