SPIL Announces Acquisition of Operating Equipment Exceeding NT$1 Billion

Announcement Date: July 18, 2026 Release Date: July 17, 2026 Release Time: 19:05:58 Company Code: 3711 Company Name: ASE Holding

1. Name and Nature of the Asset: Operating machinery and equipment

2. Date of Occurrence: July 18, 2025 – July 17, 2026

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Approved by General Manager Date: July 17, 2026 (R.O.C. Year 115)

5. Quantity, Unit Price, and Total Transaction Amount: Acquired 176 batches Average unit price: NT$5,826,110 Total transaction amount: NT$1,025,395,400

6. Counterparty and Relationship with the Company: Counterparty: Hong Qi Xin Ji Co., Ltd. Relationship: No affiliation

7. Conditions of Delivery or Payment (including payment schedule and amount), Contractual Restrictions, and Other Important Agreements: Payment via telegraphic transfer. Contractual restrictions: None Other important agreements: None

8. Method of Transaction Decision, Pricing Reference, and Decision-Making Unit: Transaction decision method: Bidding or negotiation Pricing reference: Based on historical transaction data and market conditions Decision-making unit: Determined according to internal company approval authority

9. Purpose of Acquisition: For operational use

10. Related-Party Transaction: No

11. Additional Notes: No dissenting opinions from directors. No broker involved. No appraisal or auditor involvement required.