[CMC] Announcement regarding the company's acquisition of securities

1. Securities Name: Phison Common Shares

2. Transaction Dates: 115/05/27~115/06/03

3. Board of Directors Approval Date: Not applicable

4. Other Approval Date: Approval Level: Chairman's approval June 3, 115

5. Quantity, unit price, and total amount of the transaction: Quantity (in thousands of shares): 211 Unit price (TWD): 2,710.52 Total transaction amount (TWD): 571,920,463

6. Disposal profit (or loss) (Not applicable for acquisitions of securities): Not applicable

7. Relationship with the target company: None

8. Cumulative holdings of these securities to date (including this transaction), amount, shareholding ratio, and rights restrictions (e.g., pledges): Balance: 288,000 shares, Amount: 748,161,702 TWD Shareholding ratio: 0.13%, Rights restrictions: None

9. Cumulative investments in securities as listed in Article 3 of the 'Regulations Governing the Acquisition and Disposal of Assets by Public Companies' to date (including this transaction) as a percentage of total assets and equity attributable to the parent company in the most recent financial statement, and the working capital in the most recent financial statement: Percentage of total assets: 78.82% Percentage of equity attributable to the parent company: 113.20% Working capital: 8,285,327 thousand TWD

10. Specific purpose of acquisition or disposal: Investment portfolio

11. Opinions of directors objecting to this transaction: None

12. Is this transaction a related-party transaction?: No

13. Transaction counterparty and relationship with the company: Not applicable

14. Date of approval by supervisors or consent by the audit committee: Not applicable

15. Date of previous announcement of major information regarding the same event: Not applicable

16. Other notes: Authorized parties were authorized on 115/03/31 to engage in securities trading on the centralized trading market during the second quarter of 115.