Chung Yen Announces Acquisition of Phison Ordinary Shares

Release Date: July 8, 2026 Statement Date: July 7, 2026 Statement Time: 17:50:54 Company Code: 2323 Company Name: Chung Yen Subject: Announcement of Securities Acquisition Applicable Clause: Clause 20 Factual Date: July 7, 2026

1. Security Name: Phison Ordinary Shares

2. Transaction Date: 06/26/2026 ~ 07/07/2026

3. Board Approval Date: Not applicable

4. Other Approval Date: Approval Level: Chairman's Decision July 7, 2026

5. Transaction Quantity, Unit Price, and Total Amount: Quantity (in thousands of shares): 180 Unit Price (NT$): 2,268.28 Total Transaction Amount (NT$): 408,289,801

6. Gain (or Loss) on Disposal (Not applicable for acquisition of securities): Not applicable

7. Relationship with the Target Company: None

8. Cumulative Holdings (including this transaction) to Date: Balance: 329,000 shares, Amount: NT$782,731,712 Ownership Ratio: 0.15%, Rights Restrictions (e.g., pledge): None

9. Ratio of Securities Investment (including this transaction) under Article 3 of the 'Asset Acquisition and Disposal Guidelines for Publicly Issued Companies' to Total Assets and Equity Attributable to Owners of Parent in the Latest Financial Statements, and Working Capital: Ratio to Total Assets: 86.11% Ratio to Equity Attributable to Owners of Parent: 123.67% Working Capital: NT$8,285,327 thousand

10. Specific Purpose of Acquisition or Disposal: Investment portfolio

11. Dissenting Director's Opinion on This Transaction: None

12. Whether This Transaction is a Related-Party Transaction: No

13. Counterparty and Relationship with the Company: Not applicable

14. Date of Supervisor's Approval or Audit Committee's Consent: Not applicable

15. Previous Material Information Disclosure Date for the Same Event: Not applicable

16. Other Disclosures: On June 30, 2026, authorized traders were approved to conduct securities transactions in the centralized market during the third quarter of 2026