Slide 1: Third Quarter 2025 Earnings Release
Third Quarter 2025 Earnings Release 30 October, 2025 ASE Technology Holding
Slide 2: Safe Harbor Notice
Safe Harbor Notice This presentation contains "forward - looking statements" within the meaning of Section 27A of the United States Securities Act of 1933, as amended, and Section 21E of the United States Securities Exchange Act of 1934, as amended. These statements are made under the “safe harbor”
Slide 3: Consolidated Statements of Income Quarterly Comparison
Consolidated Statements of Income Quarterly Comparison (Unaudited) 3 (NT$ million) Q3 / 2025 % Q2 / 2025 % Q3 / 2024 % QoQ YoY Net Revenues: ATM 99,393 59.0% 91,648 60.8% 84,545 52.8% 8% 18% EMS 68,405 40.6% 58,374 38.7% 74,871 46.8% 17% -9% Others 771 0.4% 728 0.5% 689 0.4% 6% 12% Total Net Revenue
Slide 4: Consolidated Operations
Consolidated Operations (Unaudited) 4 72,862 76,676 84,545 87,208 85,606 91,648 99,393 59,326 62,853 74,871 74,243 61,860 58,374 68,405 15.7% 16.4% 16.5% 16.4% 16.8% 17.0% 17.1% 5.6% 6.4% 7.2% 6.9% 6.5% 6.8% 7.8% 0% 10% 20% 30% 0 30,000 60,000 90,000 120,000 150,000 180,000 Q1/24 Q2/24 Q3/24 Q4/24 Q
Slide 5: ATM Statements of Income Quarterly Comparison
ATM Statements of Income Quarterly Comparison (Unaudited) 5 (NT$ million) Q3 / 2025 % Q2 / 2025 % Q3 / 2024 % QoQ YoY Net Revenues: Packaging 80,602 80.4% 74,440 80.4% 70,290 81.9% 8% 15% Testing 18,420 18.3% 16,612 18.0% 14,124 16.5% 11% 30% Direct Material 1,190 1.2% 1,431 1.5% 1,295 1.5% -17% -8%
Slide 6: ATM Operations
ATM Operations (Unaudited) 6 15,557 17,201 19,795 20,609 19,611 20,248 22,697 73,908 77,813 85,790 88,363 86,668 92,565 100,289 21.0% 22.1% 23.1% 23.3% 22.6% 21.9% 22.6% 0% 10% 20% 30% 40% 0 20,000 40,000 60,000 80,000 100,000 120,000 Q1/24 Q2/24 Q3/24 Q4/24 Q1/25 Q2/25 Q3/25 NT$ million Gross Profi
Slide 7: ATM Revenues by Application
ATM Revenues by Application (Unaudited) 7 52% 49% 50% 53% 48% 46% 45% 18% 19% 18% 17% 22% 24% 25% 30% 32% 32% 30% 30% 30% 30% 0% 20% 40% 60% 80% 100% Q1/24 Q2/24 Q3/24 Q4/24 Q1/25 Q2/25 Q3/25 Communication Computing Automotive, Consumer & Others
Slide 8: ATM Revenues by Type
ATM Revenues by Type (Unaudited) 8 43% 44% 45% 47% 46% 47% 48% 30% 31% 29% 27% 28% 28% 26% 9% 7% 8% 7% 6% 5% 6% 16% 16% 16% 18% 18% 18% 18% 2% 2% 2% 1% 2% 2% 2% 0% 20% 40% 60% 80% 100% Q1/24 Q2/24 Q3/24 Q4/24 Q1/25 Q2/25 Q3/25 Material Testing Others Wirebonding Bump/FC/WLP /SiP
Slide 9: EMS Operations Quarterly Comparison & Revenues by Application
EMS Operations Quarterly Comparison & Revenues by Application (unaudited) (NT$ million) Q3 / 2025 % Q2 / 2025 % Q3 / 2024 % QoQ YoY EMS Net Revenues 69,022 100.0% 58,770 100.0% 75,384 100.0% 17% -8% Gross Profit 6,379 9.2% 5,549 9.4% 6,757 9.0% 15% -6% Operating Income (Loss) 2,541 3.7% 1,513 2.6% 2
Slide 10: Key Balance Sheet Items & Indices
Key Balance Sheet Items & Indices (Unaudited) 10 *: EBITDA stands for net income or loss before interest, taxes, depreciation, amortization, impairment and investment gain or lo ss as well as other items. (NT$ million) Sept. 30, 2025 Jun. 30, 2025 Cash and cash equivalent $75,142 $72,785 Financial a
Slide 11: Equipment Capital Expenditures vs. EBITDA
Equipment Capital Expenditures vs. EBITDA (Unaudited) 11 228 406 603 640 892 992 779 765 811 888 895 843 879 1,095 0 200 400 600 800 1,000 1,200 Q1/24 Q2/24 Q3/24 Q4/24 Q1/25 Q2/25 Q3/25 US$ million Capex EBITDA
Slide 12: Fourth Quarter 2025 Outlook (1/2)
Fourth Quarter 2025 Outlook (1/2) Based on our current business outlook and exchange rate assumptions of 1 US dollar to 30 .4 NT dollars (versus 29.7 in 3 rd quarter 2025) , management projects overall performance for the fourth quarter of 2025 to be as follows: Consolidated • In NT dollar terms,
Slide 13: Fourth Quarter 2025 Outlook (2/2)
Fourth Quarter 2025 Outlook (2/2) ATM • In NT dollar terms, our ATM 4th quarter revenue should grow by 3 to 5 percent quarter over quarter; • Our ATM 4th quarter gross margin should increase by 100 to 150 basis points quarter over quarter. EMS • In NT dollar terms, our EMS 4th quarter revenue sh
Slide 14: Thank you
Thank you LL Afr Y “yy = = aseglobal.com a, SS
Slide 15: Appendix: Consolidated Statements of Comprehensive Income
Appendix 1 Consolidated Statements of Comprehensive Income (Unaudited) 15 (NT$ thousand) Q1/ 2025 1&2 Q2/ 2025 1&2 Q3/ 2025 1&2 Revenues 148,153,262 150,750,323 168,568,888 COGS 123,260,526 125,062,803 139,692,147 PPA under COGS 557,027 520,681 515,185 Gross profit 24,892,736 25,687,520 28,876,741 G