Powerchip Semiconductor Manufacturing Announces Q2 2026 Unaudited Consolidated Earnings

Release Date: July 15, 2026 Statement Date: July 14, 2026 Statement Time: 17:06:18 Company Code: 6770 Company Name: Powerchip Semiconductor Manufacturing Company Limited Subject: Announcement of unaudited consolidated earnings for Q2 2026 Applicable Clause: Item 51 Event Date: July 14, 2026

Details: 1. Event Date: July 14, 2026 2. Company Name: Powerchip Semiconductor Manufacturing Company Limited 3. Relationship to Company (enter 'Company' or 'Subsidiary'): Company 4. Cross-shareholding Ratio: Not applicable 5. Reason for Announcement: Announcement of unaudited consolidated earnings for Q2 2026: (Unit: NT$1,000)

Q2 2026 (Apr-Jun) YTD 2026 (Jan-Jun) ------------------- ------------------- Net Consolidated Operating Revenue: 17,290,184 30,862,646 Consolidated Gross Profit (Loss): 4,888,925 6,277,138 Consolidated Operating Profit (Loss): 3,684,085 17,910,193 Consolidated Pre-tax Profit (Loss): 3,887,979 18,219,892 Consolidated Net Profit (Loss): 3,291,141 17,522,350 Basic Earnings (Loss) Per Share (NT$): 0.76 4.08

6. Response Measures: None 7. Additional Notes: The above information is unaudited and prepared internally by the company, not yet reviewed by independent auditors.