Chung Hsing Announces Acquisition of Marketable Securities

1. Security Name:
Huagang Light Common Stock

2. Transaction Date: June 1, 2026 – June 22, 2026 (Minguo Year 115)

3. Board Approval Date: Not applicable

4. Other Approval Dates:
Approval Level: Approved by Chairman
June 22, 2026 (Minguo Year 115)

5. Transaction Quantity, Unit Price, and Total Amount:
Quantity (in thousands of shares): 658
Unit Price (NT$): 568.18
Total Transaction Amount (NT$): 373,863,056

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 – Quantity, Amount, Ownership Percentage, and Restricted Rights (e.g., pledge status):
Holdings: 758,000 shares, Amount: NT$450,506,300
Ownership Percentage: 0.53%, Rights Restrictions: None

9. Cumulative Marketable Securities Investment under Article 3 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies' (including this transaction), as a percentage of Total Assets and Equity Attributable to Owners of Parent in the Company's Latest Financial Statements, and Operating Working Capital:
Percentage of Total Assets: 82.21%
Percentage of Equity Attributable to Owners of Parent: 118.07%
Operating Working Capital: NT$8,285,327 thousand

10. Specific Purpose of Acquisition or Disposal:
Portfolio investment

11. Dissenting Director 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 March 31, 2026 (Minguo Year 115), authorized traders were granted authority to conduct securities transactions in the centralized market during Q2 2026.