#1Amkor Technology, Inc. Investor Presentation May 2013 Amkor Technology 10100110101001101010 POGA Enabling a Microelectronic WorldⓇ 010100110101#2Disclaimer Amkor TechnologyⓇ Forward-Looking Statement Disclaimer All information and other statements contained in this presentation, other than statements of historical fact, constitute forward-looking statements within the meaning of federal securities laws. These forward-looking statements involve a number of risks, uncertainties, assumptions and other factors that could affect our future results and cause actual results and events to differ materially from our historical and expected results and those expressed or implied in these forward-looking statements. Our historical financial information, and the risks and other important factors that could affect the outcome of the events set forth in these statements and that could affect our operating results and financial condition, are contained in our filings with the Securities and Exchange Commission, including our Form 10-K for the 2012 year and subsequent filings. We undertake no obligation to review or update any forward-looking statements to reflect events or circumstances occurring after this presentation. Policy Regarding Prior Guidance and Forward-Looking Statements From time to time we may provide financial guidance in our earnings releases and make other forward- looking statements. Our financial guidance and other forward-looking statements are effective only on the date given. In accordance with our policy, we will not update, reaffirm or otherwise comment on any prior financial guidance or other forward-looking statements in connection with this presentation. No reference made to any prior financial guidance or other forward-looking statements in connection with this presentation should be construed to update, reaffirm or otherwise comment on such prior financial guidance or other forward-looking statements. © 2013 Amkor Technology, Inc. Amkor Confidential Information 2#3Leading Outsourced Packaging & Test Provider Amkor TechnologyⓇ Industry Pioneer and Technology Leader Driving Innovation for Over 40 Years Amkor 900 fcSCSP 0.4 mm pitch In the Right Markets with the Right Customers Strong Competitive Position Within Growing OSAT Industry Ankar FO It's t © 2013 Amkor Technology, Inc. Amkor Confidential Information Amkor ExposedPad LOFP 128 LD 20x20 Amkor FPFC Cup Pop 3#4Key Financial Highlights: LTM 1Q13 Amkor TechnologyⓇ Investing for Growth Opportunities Debt Increasing in Line with Improving Profitability and Growing Cash Flow Debt/EBITDA Under 3.0x $2.79 Billion Net Sales EBITDA (1) Net Income $542 Million Adjusted (2) $592 Million $43 Million Adjusted (2) $95 Million (1) EBITDA is defined as net income before interest expense, income tax expense and depreciation and amortization - Refer to reconciliation of Non-GAAP measures in the appendix (2) Adjusted EBITDA excludes $50 million cost of goods sold portion of loss contingency charge. Adjusted Net Income excludes $56 million loss contingency charge ($52 million, net of tax) - Refer to reconciliation of Non-GAAP measures in the appendix © 2013 Amkor Technology, Inc. Amkor Confidential Information 4#5Growth Drivers Silicon Interposer with Flip Chip Die with TSV Feature Cu Pillar Bumps Cu Pillar Bumps Amkor TechnologyⓇ End Markets Technology and R&D Packaging and Test Industry " " In the Right Markets Significant Penetration in Key Devices Deep Ties with the Right Customers Strong OEM Presence Flip Chip Growth ■ Fine Pitch Copper Pillar Platform ■ Wafer-Level Processes ■ 3D Packaging ■ MEMS ◉ ☐ Manufacturing Cost Reductions Semiconductor Unit Growth ■ IDM Outsourcing and "Fab-Lite" Model ☐ Growth of Fab-Less Design Houses Note: Silicon interposer image courtesy of Xilinx, TSMC and Amkor © 2013 Amkor Technology, Inc. ◉ Collaboration and Innovation Amkor Confidential Information 5 LO#6End Market Summary Amkor TechnologyⓇ Communications 52% Consumer 19% Computing 10% Networking Other 11% 8% Smartphone Tablet Gaming Television PC/Laptop Server Automotive Hard Disk Drive Router Industrial Wireless LAN Set Top Box Peripherals Switch Note: Percentages represent share of LTM 1Q13 Net Sales. © 2013 Amkor Technology, Inc. Amkor Confidential Information 6#7Mobile Communications Driving Semi Growth Semiconductor Market Revenues ($ in billions) $140 $120 $100 Growth - $43B CAGR 10% $112 $80 Growth - $6B CAGR - 2% Growth $15B $74 CAGR - 6% $69 $68 $60 $62 Growth - $6B CAGR -3% $47 $40 $42 $36 $20 2012 2017F Amkor TechnologyⓇ Semiconductor Industry Growth 2012 - $292B 2017F $380B - Growth - $88B CAGR -5% Growth $11B CAGR - 4% $58 Growth - $7B CAGR - 5% $47 $32 $25 $0 Mobile Phones & Consumer Tablets Computing Networking Automotive Other* Source: Prismark Partners. February 2013 Other includes Medical, Industrial, Military and Aerospace © 2013 Amkor Technology, Inc. Amkor Confidential Information 7#8Significant Penetration in Key Devices Smartphone & Tablet r Amkor TechnologyⓇ Connected Home Networking Server Applications Processor Digital Baseband Memory Audio Processor WiFi, Bluetooth, GPS, FM Radio Power Management MEMS Sensors RF/RFPA Touch Screen Controller CPU Signal Image Processor Memory Digital Tuner Decoder Audio Processors CPU ASIC / PLD Memory I/O Control Bus © 2013 Amkor Technology, Inc. Amkor Confidential Information 8#9Deep Ties with the Right Customers Amkor TechnologyⓇ Customer Share of 2012 Net Sales: Top 10 - 62% / Top 25 - 84% ALTERA ANALOG DEVICES QUALCOMM SONY BROADCOM® (intel LSI ST TEXAS INSTRUMENTS TOSHIBA © 2013 Amkor Technology, Inc. Amkor Confidential Information 6#10Flip Chip & Advanced Packaging Leader Migration to Flip Chip, 3D and Advanced Packaging Continues to Accelerate ■ Driven by Strong Demand for Smartphones, Tablets, Consumer Electronics, Network Infrastructure ■ Enhances Device Performance, Reduces Power Consumption and Form Factors Higher Gross Margin and Returns Versus Wirebond Amkor TechnologyⓇ LTM 1Q13 Flip Chip & Advanced Packaging Revenue ($ in millions) $800 $530 $870 $1,230 ECONOIMC NEWS 12:56 © 2013 Amkor Technology, Inc. Amkor Confidential Information STATS SPIL ASE Amkor Non-Amkor Sources: Company Press Releases 10#11Packaging and Test Industry Growth Drivers ■ Semiconductor Unit Growth 6% CAGR from 2012 to 2017(1) ■ IDM Outsourcing - "Fab-Lite" model gaining momentum Some not investing in new packaging and test technologies Some shedding assets to OSATS ■ Growth of Fabless Design Houses (1) - $70 billion revenue in 2012 27% of total IC market in 2012 Up from 9% in 2000 Collaboration and Innovation - OSATS no longer just overflow capacity (1) The McClean Report. February 2013. 2013 Amkor Technology, Inc. Amkor Confidential Information OSAT Share of Total P&T Market 55% Amkor TechnologyⓇ OSATS Growing and Gaining Share $24B 50% $35B 45% 55% $21B 51% 40% 44% 35% 2007 2012 2017F Source: Gartner Semiconductor Assembly and Test Services, Worldwide, 1Q13 Update 11#12World-Class Manufacturing Infrastructure, Scale and Scope Amkor TechnologyⓇ China 1.0M sf Taiwan 850k sf Korea 2.3M sf Philippines 1.4M sf 5.8 Million Sq. Ft. Manufacturing Space 2013 Amkor Technology, Inc. Japan 210k sf LTM 1Q13 Net Sales and Packaged Units by Factory Location Amkor Confidential Information 14% 3% 10% 13% 6% 12% 18% 49% 53% 32% Net Sales ■ Korea China Units Philippines Taiwan ■ Japan 12#13DEVICES Amkor TechnologyⓇ Amkor Capturing Value in the Japanese Semiconductor Market J-Devices Growth Largest Japanese OSAT Focused on Wirebond Products for Consumer Electronics, Automotive and Industrial End Markets Capturing On-Island Business Through Acquisitions Fujitsu in 2012 - Agreement for Renesas in 2013 Principal Customers to Include: TOSHIBA FUJITSU © 2013 Amkor Technology, Inc. RENESAS Amkor Ownership Increasing ■ Joint Venture: Amkor, Toshiba, Original ◉ ☐ Owners of J-Devices' Predecessor Initial 30% Ownership - $17 Million Exercised Option to Increase Ownership to 60% $67 Million ☐ Equity Method of Accounting due to Minority Shareholder Rights ☐ Leverage Relationships to also Capture Off-Island Business Amkor Confidential Information 13#14First Quarter 2013 Summary Amkor Technology® 4Q 2012 (In millions, except per share data) 1Q 2012 1Q 2013 Actual Adjusted(3) Net Sales $655 $723 $723 $688 Gross Margin 16% 16% 18% 17% Net Income $12 $7 $27 $13 Earnings Per Diluted Share $0.06 $0.05 $0.13 $0.07 Free Cash Flow(1) ($65) ($49) ($49) ($14) EBITDA (2) $126 $139 $159 $140 Packaging Utilization 73% 77% 77% 76% (1) Free cash flow is defined as operating cash flow less purchases of property, plant and equipment - Refer to reconciliation of Non-GAAP measures in the appendix (2) EBITDA is defined as net income before interest expense, income tax expense and depreciation and amortization - Refer to reconciliation of Non-GAAP measures in the appendix (3) Excluding loss contingency accrual of $22 million ($20 million cost of goods sold, $2 million interest expense. $20 million, net of tax) - Refer to reconciliation of Non-GAAP measures in the appendix © 2013 Amkor Technology, Inc. Amkor Confidential Information 14#15Profitability Trends Revenue and Gross Profit ($ in millions) Amkor TechnologyⓇ Selling, General & Administrative and Research & Development ($ in millions) $3,500 30% $300 30% $2,939 $3,000 $2,776 $2,760 $2,792 $242 $247 25% $250 25% 23% $217 $219 $2,500 20% $200 20% 18% 15% 16% $2,000 15% $150 15% $1,500 10% 11% 10% 10% 10% $100 10% $1,000 $664 $48 $50 $54 $55 $491 $424 $434 5% $50 5% $500 0% 2010 2011 2012 LTM 1Q13 Revenue Gross Profit Gross Margin % 2012 and LTM 1Q13 Adjusted Gross Margin of 17%(¹) 0% 2012 LTM 1Q13 R&D SG&A and R&D % of Rev 2010 2011 SG&A (1) Excludes $50 million cost of goods sold portion of loss contingency charge - Refer to reconciliation of Non-GAAP measures in the appendix © 2013 Amkor Technology, Inc. Amkor Confidential Information 15#16Free Cash Flow and EBITDA Free Cash Flow(1) ($ in millions) $97 $50 ($93) ($144) 2010 2011 2012 LTM 1Q13 ☐ 2012 and LTM 1Q13 Include $20 Million Payment for Loss Contingency EBITDA (2) ($ in millions) $676 Amkor TechnologyⓇ $521 $527 $542 2010 2011 2012 LTM 1Q13 2012 and LTM 1Q13 Include $50 Million for Loss Contingency Charge (1) Free cash flow is defined as net cash provided by operating activities less purchases of property, plant and equipment - Refer to reconciliation of Non-GAAP measures in the appendix (2) EBITDA is defined as net income before interest expense, income tax expense and depreciation and amortization - Refer to reconciliation of Non-GAAP measures in the appendix 2013 Amkor Technology, Inc. Amkor Confidential Information 16#17Oper. Cash Flow and CapEx Capital Additions and Capital Intensity ■ 2013 Capital Additions of Around $525 Million to Largely Support Demand for Mobile Communications from Major Customers Based on Current Demand Expectations. Can be Fluid Over Time, Increasing or Decreasing from Current Expectations. New K5 Factory and R&D Center - Total spending of around $400 million for land and construction over the next several years In 2013, around $150 million of spending for land and construction (incremental to $525 million discussed above) LTM 1Q13 Capital Additions Mix Infrastructure / R&D Amkor TechnologyⓇ 18% 44% Packaging 38% Test Operating Cash Flow and CapEx ($ in millions) Amkor Capital Intensity Capital Intensity is defined as capital additions as a percentage of net sales ($ in millions) 1.2 $700 19% 19% 20% $700 17% 1.1 1.2 16% $600 $600 $543 $534 $517 $525 1.0 $500 $467 $446 $389 $432 0.8 $400 0.8 0.7 0.6 $300 0.4 $200 Oper. Cash Flow/CapEx 15% $500 $400 10% $300 $505 $533 $534 $453 $200 5% $100 0.2 $100 $- $- 0% 2010 2011 2012 LTM 1Q13 2010 Oper. Cash Flow CapEx Cash Paid Oper. CF/Cash CapEx 2011 Capital Additions 2012 LTM 1Q13 Capital Intensity % © 2013 Amkor Technology, Inc. Amkor Confidential Information 17#18Credit Profile Excluding Loss Contingency Charge(1) Total Debt, Net Debt and Cash Balance Amkor TechnologyⓇ 2012 LTM 1Q13 $2.0 $500 $435 $467 $405 $413 Debt/EBITDA 2.7x 2.7x $1.6 $1.5 $400 $1.5 $1.4 $1.3 Net Debt/EBITDA 2.0x 1.9x $1.1 $1.1 $300 $1.0 EBIT ($M) $207 $213 $0.9 $1.0 $200 EBIT/Interest Expense 2.2x 2.2x $0.5 (1) Excludes $56 million loss contingency charge ($50 million cost of goods sold; $6 million interest expense; $52 million, net of tax) - Refer to reconciliation of Non-GAAP measures in the appendix Debt/EBITDA and Net Debt/EBITDA 2.0 2.9 2.6 2.1 1.8 1.4 $- 2010 2011 2012 LTM 1Q13 Total Debt Net Debt Cash Balance EBIT and Interest Expense ($ in millions) 2.9 $400 3.5 $352 2010 2011 2012 LTM 1Q13 ■Debt/EBITDA ■Net Debt/EBITDA 2013 Amkor Technology, Inc. 2.1 EBIT and Interest Expense $300 2.1 3.5 3.0 2.5 $200 $186 1.6 1.6 2.0 $157 1.5 $163 $101 $98 $101 $87 1.0 $100 0.5 $- 2010 Amkor Confidential Information 2011 EBIT Interest Expense 2012 LTM 1Q13 EBIT/Int. Exp. 18 $100 EBIT/Interest Expense Cash Balance ($ in millions)#19Debt Maturities Current Maturity Profile as of March 31, 2013: $1,578 Million ($ millions) $255 $250 $105 $150 $400 $345 $23 $0 $0 $5 $0 2013 2014 2015 2016 2017 2018 2019 ■Term loans ■Senior Notes Amkor TechnologyⓇ $300 2020 2021 2022 ■Convertible Notes Pro Forma Maturity Profile as of March 31, 2013: $1,553 Million Pro Forma for Inducement of $250 Million Convertible Notes (1) and Issuance of $225 Million Senior Notes Due 2022 ($ millions) $105 $150 $345 $400 $525 $23 $0 2020 2021 2022 $0 $5 $0 2013 2014 2015 2016 2017 2018 2019 ■Term loans ■Senior Notes ■Convertible Notes Callable Notes 7.375% Senior Notes 6.625% Senior Notes 6.375% Senior Notes Due Balance ($M) May 2018 June 2021 October 2022 $345 First Call Date May 2014 Call Price 103.688 $400 June 2015 104.969 $525 October 2016 104.781 (1) Assumes 100% participation in the exchange offer for the 2014 Convertible Notes © 2013 Amkor Technology, Inc. Amkor Confidential Information 19#20Appendix © 2013 Amkor Technology, Inc. Amkor Confidential Information Amkor TechnologyⓇ 20 20#21Financial Reconciliation Tables ($ in millions) Amkor Technology® 2010 2011 2012 LTM 1Q13 Q112 Q412 Q113 Net Cash Provided by Operating Activities $543 $517 $389 $432 $56 $105 $99 Less: Purchases of Property, Plant and Equipment Free Cash Flow (1) (446) (467) (534) (525) (121) (154) (113) $97 $50 ($144) ($93) ($65) ($49) ($14) Property, Plant and Equipment Additions (Capital Additions) $505 $453 $533 $534 $124 $86 $124 Net Change in Related Accounts Payable and Deposits (59) 14 (9) (3) 68 (11) Purchases of Property, Plant and Equipment $446 $467 $534 $525 $121 $154 $113 Net Income $232 $92 $42 $43 $12 $7 $13 Plus: Interest Expense (Including Related Party) 101 87 98 101 22 22 27 26 26 Plus: Income Tax Expense 19 7 17 19 3 8 4 EBIT(1) 352 186 157 163 37 42 43 Plus: Depreciation & Amortization EBITDA (1) 324 335 370 379 89 97 97 $676 $521 $527 $542 $126 $139 $140 (1) See discussion of Non-GAAP measures on page 23 2013 Amkor Technology, Inc. Amkor Confidential Information 21 21#22Financial Reconciliation Tables ($ in millions) Amkor TechnologyⓇ 2010 2011 2012 LTM 1Q13 Operating Income $374 $194 $153 $159 Plus: Equity in Earnings of Unconsolidated Affiliate 6 7 6 4 Less: Income Tax Expense (19) (7) (17) (19) Net Operating Profit After Tax (NOPAT) $361 $194 $142 $144 Average Debt $1,399 $1,355 $1,446 $1,466 Plus: Average Equity 507 662 676 684 Less: Average Cash (400) (420) (424) Average Invested Capital $1,506 $1,597 $1,698 (424) $1,726 Return on Invested Capital (ROIC)(1) 24% 12% 8% 8% (NOPAT / Average Invested Capital) Total Debt Less: Cash Net Debt EBITDA (1) Debt/ EBITDA Net Debt/ EBITDA $1,364 405 $1,347 435 $1,545 413 $1,578 467 $959 $912 $1,132 $1,111 $676 $521 $527 $542 2.0 2.6 2.9 2.9 1.4 1.8 2.1 2.1 (1) See discussion of Non-GAAP measures on page 23 © 2013 Amkor Technology, Inc. Amkor Confidential Information 22 22#23Empty#24Financial Reconciliation Tables Amkor TechnologyⓇ 4Q12 2012 LTM 1Q13 Gross Margin 16% 15% 16% Plus: Loss Contingency Charge Divided by Net Sales 2% 2% 1% Adjusted Gross Margin 18% 17% 17% Net Income ($ in millions) Plus: Loss Contingency Charge, Net of Tax Adjusted Net Income $7 $42 $43 20 52 52 $27 $94 $95 Earnings per Diluted share Plus: Loss Contingency Charge per Diluted Share Adjusted Earnings per Diluted Share $0.05 $0.24 $0.23 0.08 0.21 0.21 $0.13 $0.45 $0.44 EBITDA (1) ($ in millions) $139 $527 $542 Plus: Cost of Goods Sold Portion of Loss Contingency Charge Adjusted EBITDA (1) 20 50 50 $159 $577 $592 In this presentation we provide adjusted gross margin, adjusted net income, adjusted earnings per diluted share and adjusted EBITDA for the quarter and year ended December 31, 2012, and the twelve months ended March 31, 2013. We present these non-GAAP amounts to demonstrate the impact of the loss contingency we recognized for the quarter and year ended December 31, 2012, and the twelve months ended March 31, 2013, related to our pending patent license arbitration with Tessera, Inc. However, these measures have limitations, including that they exclude the charges for the Tessera arbitration award, which is an amount that the company may ultimately have to pay in cash. Furthermore, the factors affecting the calculation of the arbitration award are complex and subject to determination by the arbitration panel. Therefore, the final amount of the loss may be more than the amount we have recognized. Accordingly, these measures that exclude the loss contingency should be considered in addition to, and not as a substitute for, or superior to, gross margin, net income and earnings per diluted share prepared in accordance with U.S. GAAP. Above is the reconciliation of adjusted gross margin, adjusted net income and adjusted earnings per diluted share to U.S. GAAP gross margin, net income and earnings per diluted share. (1) See discussion of Non-GAAP measures on page 23 2013 Amkor Technology, Inc. Amkor Confidential Information 224 24