First Financial Holding Announces Self-Compiled Consolidated Earnings for June 2026

Release Date: July 14, 2026 Statement Date: July 13, 2026 Statement Time: 14:00:58 Company Code: 2892 Company Name: First Financial Holding Subject: Announcement of Self-Compiled Consolidated Earnings for June 2026 for the Company and Its Major Subsidiaries Applicable Clause: Clause 51 Factual Date: July 13, 2026

Details: 1. Factual Date: 07/13/2026 2. Company Name: First Financial Holding Co., Ltd. 3. Relationship with Company (Enter '本公司' or 'Subsidiary'):本公司 (Parent Company) 4. Cross-shareholding Ratio: 100% 5. Reason for Occurrence: As stated in the subject 6. Response Measures: None 7. Other Matters to be Disclosed (If the entity involved in the event or resolution is a publicly issued company or above, this material information also meets Article 7, Paragraph 9 of the Enforcement Rules of the Securities and Exchange Act, regarding matters having significant impact on shareholders' equity or securities prices):

------------- Monthly Self-Compiled Earnings Cumulative Self-Compiled Earnings Cumulative EPS ------------- Pre-tax After-tax Pre-tax After-tax After-tax Unit (Billion NT$) (Billion NT$) (Billion NT$) (Billion NT$) (NT$) ---------------------------------------------------------------------------------------- First Financial Holding 37.54 29.97 216.23 177.98 1.24 First Bank 31.22 25.19 188.21 154.56 1.26 First Securities 3.43 2.91 16.52 14.11 2.11 First Life Insurance 0.70 0.67 4.92 4.18 0.61 ----------------------------------------------------------------------------------------

Note: Cumulative EPS (NT$) from January to June excludes foreign exchange valuation reserves First Financial Holding: 1.25 First Life Insurance: 0.87