Powerchip Semiconductor Manufacturing Corporation (PSMC) Clarifies False Report on DRAM Production Plans

Date of Announcement: July 2, 115 (2026) Date of Statement: July 1, 115 (2026) Time of Statement: 23:53:49 Company Code: 6770 Company Name: Powerchip Semiconductor Manufacturing Corporation Subject: Clarification of Media Reports Regarding the Company Applicable Clause: Clause 51 Date of Event: July 1, 115 (2026)

Details: 1. Date of Event: 07/01/115 2. Company Name: Powerchip Semiconductor Manufacturing Corporation 3. Relationship with Company: Company Itself 4. Cross-shareholding Ratio: Not applicable 5. Name of Media Source: Internal report from an overseas securities firm 6. Content of Report: "...Powerchip Taiwan and its partner companies will advance DRAM production and sales..." 7. Reason for Occurrence: In response to an internal report from an overseas securities firm claiming that Powerchip Taiwan and its partners are advancing DRAM production and sales, Powerchip Semiconductor Manufacturing Corporation (PSMC) hereby solemnly clarifies that it has absolutely no plans to transfer DRAM-related technology or establish manufacturing operations overseas. To prevent misinformation from spreading, this clarification is officially issued. 8. Response Measures: Issuance of a material information announcement to clarify the reported content. 9. Other Matters to be Disclosed: None