Slide 1: Q3 2025 Financial Results
Q3 2025 Financial Results October 2025 © 2025 Amkor Technology, Inc. 1
Slide 2: Presenter Introductions
Presenter Introductions Jennifer Jue Giel Rutten Megan Faust Vice President, President and Executive Vice Investor Relations Chief Executive President and Officer Chief Financial Officer © 2025 Amkor Technology, Inc. 2
Slide 3: Disclaimer
Disclaimer Non-GAAP Measures This presentation contains certain measures that are not defined terms under U.S. generally accepted accounting principles (“GAAP”). These non-GAAP measures should not be considered in isolation or as a substitute for, or superior to, measures of liquidity or performance
Slide 4: Business Highlights and Strategic Pillars
Business Highlights and Strategic Pillars Giel Rutten l President and Chief Executive Officer © 2025 Amkor Technology, Inc. 4
Slide 5: Q3 2025 Highlights
Q3 2025 Highlights $1.99B Revenue, up 31% sequentially EPS of $0.51 Record Advanced packaging revenue Record Communications and Computing revenue © 2025 Amkor Technology, Inc. 5
Slide 6: Q3 2025 End Market Dynamics
Q3 2025 End Market Dynamics Communications Computing ▶ Revenue up 67% sequentially ▶ Revenue up 12% sequentially ▶ Increase driven by iOS ecosystem ▶ HDFO ramp progressing ▶ Collaborating with customers on ▶ Strong customer pipeline fueled by packaging for AI edge devices investments in AI and HPC A
Slide 7: Executing Our Long-Term Strategy
Executing Our Long-Term Strategy Strengthening Technology Investing in Resilient Partnering with Lead Customers Leadership Manufacturing Footprint in Growth Markets Groundbreaking on new Advanced packaging and test campus in Arizona ▶ Enables a full end-to-end U.S. semiconductor supply chain ▶ Expan
Slide 8: Financial Results and Outlook
Financial Results and Outlook Megan Faust l Executive Vice President and Chief Financial Officer © 2025 Amkor Technology, Inc. 8
Slide 9: Q3 2025 Financial Results
Q3 2025 Financial Results Revenue Gross Profit and Margin % ($ in billions) ($ in millions) 14.6% 14.3% 12.0% $1.86 $1.99 $272 $284 $1.51 $182 Q324 Q225 Q325 Q324 Q225 Q325 Operating Income and Margin % Earnings Per Share ($ in millions) 8.0% 8.0% 6.1% $159 $0.49 $0.51 $149 $92 $0.22 (1) (1) Q324 Q2
Slide 10: Q3 2025 Financial Strength
Q3 2025 Financial Strength EBITDA* of $340 million and EBITDA margin* of 17.1% Cash & Short-Term Investments of $2.1 billion Liquidity(2) of $3.2 billion Total Debt of $1.8 billion and debt to EBITDA(1)* of 1.7x See corresponding endnotes on slide 18. *See discussion of non-GAAP measures on slide 17
Slide 11: Q4 2025 Guidance
Q4 2025 Guidance As of October 27, 2025(3) $1.775B-$1.875B 14.0%-15.0% $95M-$120M $0.38-$0.48 $950M Net Sales Gross Margin* Net Income Diluted EPS 2025 CapEx *Guidance includes an expected benefit of approximately $30 million to gross margin from the sale of assets. See corresponding endnotes on sli
Slide 12: © 2025 Amkor Technology, Inc.
& © 2025 Amkor Technology, Inc. 12
Slide 13: Advancing Our Strategic Initiatives
Advancing Our Strategic Initiatives Key Messages $1.775B-$1.875B ▶ Delivered strong Q3 with record revenue in Q4 2025 Revenue Communications and Computing Guidance(3) ▶ Q4 revenue expected to increase 12% YoY ▶ Focusing on enhancing operational efficiency ▶ Investor Day planned for 2026 See correspo
Slide 14: Enabling the Future
ENABLING the FUTURE amkor.com l © 2025 Amkor Technology, Inc. 14
Slide 15: Appendix
Appendix © 2025 Amkor Technology, Inc. 15
Slide 16: Financial Reconciliation Tables
Financial Reconciliation Tables ($ in millions) Q325 Net Income $127 Plus: Interest Expense 21 Plus: Income Tax Expense 28 Plus: Depreciation & Amortization 164 EBITDA* $340 Revenue $1,987 Net Income Margin 6.4% EBITDA Margin* 17.1% Total Debt $1,812 (1) TTM Net Income $309 Debt/Net Income Ratio 5.9
Slide 17: Non-GAAP Measures
Non-GAAP Measures Generally, a non-GAAP financial measure is a numerical measure of a company’s performance, financial position or cash flows that either excludes or includes amounts that are not normally excluded or included in the most directly comparable measure calculated and presented in accord
Slide 18: Endnotes
Endnotes 1) Q2 2025 results include a $32 million net benefit to operating income and EBITDA due to a contingency payment related to our acquisition of Nanium in May 2017. Net income and earnings per diluted share also include a $16 million and $0.07 benefit, respectively. 2) Liquidity is defined as