5871 Chung Tai-KY

Announcement Date: July 14, 2026 Statement Date: July 13, 2026 Statement Time: 14:31:13 Company Code: 5871 Company Name: Chung Tai-KY Subject: Announcement of the Company's Consolidated Financial Results for June 2026 Applicable Clause: Item 51 Factual Date: July 10, 2026 Details: 1. Factual Date: 07/10/2026 2. Company Name: Chung Tai Holding Co., Ltd. 3. Relationship with Company (Enter '本公司' or 'Subsidiary'):本公司 4. Cross-shareholding Ratio: Not applicable 5. Reason for Occurrence: Announcement of the Company's Consolidated Financial Results for June 2026 6. Response Measures: None 7. Other Matters to be Disclosed (If the subject of the event or resolution is a publicly issued company or above, this major information also complies with Article 7, Paragraph 9, Item 9 of the Enforcement Rules of the Securities and Exchange Act, which defines matters having significant impact on shareholders' rights or securities prices): Announcement of the Company's Consolidated Financial Results for June 2026

(Unit: NT$ Million)

------------------------June Consolidated Income Statement--------------------------------- Unadjusted Adjusted Pre-tax Post-tax Attributable to Parent Company Shareholders EPS (NT$) EPS (NT$) 2,454.5 1,717.3 1,633.7 0.95 0.94

---------------------Cumulative Jan-Jun Consolidated Income Statement------------------------------ Unadjusted Adjusted Pre-tax Post-tax Attributable to Parent Company Shareholders EPS (NT$) EPS (NT$) 16,362.4 11,428.4 10,826.7 5.96 5.84

Note: The EPS calculation has deducted preferred stock dividends amounting to NT$626,919 thousand, and the impact of a stock dividend of NT$0.2 per share has been retrospectively adjusted.