[TPK] Announcement of Related Financial and Business Information Due to Reaching the Standard for Disclosure of Publicly Noticed Trading Information

1. Date of Occurrence: 2026/04/16 2. Reason for Occurrence: In accordance with the notice from Taiwan Stock Exchange Corporation. 3. Financial and Business Information: Period Month Quarter Last Four Quarters Cumulative ======================================================================== Latest Month YoY Change Latest Quarter YoY Change Q1 2025 to Q4 2025 Item March 2026 % Q4 2025 % (Consolidated Audited/Reviewed Numbers) ======================================================================== Operating Revenue 4,215 -2.61% 12,087 2.02% 49,877 (Millions NTD) Pre-tax Profit 316 -5.67% 953 -7.30% 3,512 (Millions NTD) Net Profit 236 -22.88% 728 3.41% 2,746 (Millions NTD) Earnings Per Share 0.81 -22.86% 2.49 3.32% 9.39 (NTD) 4. Occurrence of Material Information as per "Procedures for Verification and Disclosure of Material Information by Publicly Issued Companies" of Taiwan Stock Exchange Corporation, Article 4 (If 'Yes', please explain): No 5. Occurrence of Press Conference for Material Information Explanation as per "Procedures for Verification and Disclosure of Material Information by Publicly Issued Companies" of Taiwan Stock Exchange Corporation, Article 11: No 6. For complete financial information, please refer to the Market Observation Post System. Path: (1) Recent Operating Revenue and Profit/Loss Information: Basic Information > Highlights (2) Historical Monthly Operating Revenue: Operational Overview > Monthly Revenue > Monthly Revenue Information after adopting IFRSs (3) Historical Profit/Loss (Auditor Reviewed/Verified Numbers): Financial Statements > After adopting IFRSs > Consolidated/Separate Statements > Statement of Comprehensive Income (4) Historical Profit/Loss (Voluntary Self-Announced Numbers): Operational Overview > Self-Announced Profit/Loss Announcement: 7. Other Matters to be Notified: None.