2323 Chung Hsin Acquires Securities of Shang Chwan

Announcement Date: July 2, 2026 Statement Date: July 1, 2026 Statement Time: 17:41:01 Company Code: 2323 Company Name: Chung Hsin Subject: Announcement of the Company's Acquisition of Securities Applicable Clause: Clause 20 Factual Date: July 1, 2026

1. Security Name: Shang Chwan Ordinary Shares

2. Transaction Date: June 16, 2026 – July 1, 2026

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Approved by Chairman July 1, 2026 (Minguo Year 115)

5. Transaction Quantity, Unit Price, and Total Amount: Transaction Quantity (in thousands of shares): 558 Unit Price (NT$): 633.62 Total Transaction Amount (NT$): 353,559,214

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

7. Relationship with the Target Company: None

8. Cumulative Holdings of the Security (including this transaction) to Date: Balance Held: 803,892 shares, Amount: NT$546,137,665 Ownership Percentage: 0.71%, Rights Restrictions (e.g., pledge status): None

9. Proportion of Securities Investments (including this transaction) under Article 3 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies' to the Company's Total Assets and Equity Attributable to Owners of the Parent in the Latest Financial Statements, and the Amount of Working Capital: Percentage of Total Assets: 83.39% Percentage of Equity Attributable to Owners of the Parent: 119.77% Working Capital Amount: NT$8,285,327 thousand

10. Specific Purpose of the Acquisition or Disposal: Investment portfolio management

11. Dissenting Directors' Opinions on this Transaction: None

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

13. Counterparty and its Relationship with the Company: Not applicable

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

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

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