Amkor will conduct a conference call on Monday, October 28, 2013, at 5:00 p.m. Eastern Time. This call may include material information not included in this press release. This call is being webcast and can be accessed at Amkor's website: www.amkor.com. You may also access the call by dialing 1-877-941-9205 or 1-480-629-9771. A replay of the call will be made available at Amkor's website or by dialing 1-800-406-7325 or 1-303-590-3030 (access pass code #4642467). The webcast is also being distributed over Thomson Reuters' Investor Distribution Network to both institutional and individual investors. Individual investors can listen to the call through Thomson Reuters' individual investor center at www.companyboardroom.com or by visiting any of the investor sites in Thomson Reuters' Individual Investor Network. Institutional investors can access the call via Thomson Reuters' password-protected event management site, Street Events ( www.streetevents.com).

About Amkor

Amkor is a leading provider of semiconductor packaging and test services to semiconductor companies and electronics OEMs. More information about Amkor is available from the company's filings with the Securities and Exchange Commission and at Amkor's website: www.amkor.com.

Forward-Looking Statement Disclaimer

This press release contains forward-looking statements within the meaning of federal securities laws. All statements other than statements of historical fact are considered forward-looking statements including, without limitation, statements regarding strength in the NAND Flash market, our pending patent license arbitration, and all of the statements made under "Business Outlook" above. These forward-looking statements involve a number of risks, uncertainties, assumptions and other factors that could affect future results and cause actual results and events to differ materially from historical and expected results and those expressed or implied in the forward-looking statements, including, but not limited to, the following:

• the highly unpredictable nature and costs of litigation and other legal activities and the risk of adverse results of such matters, including the final ruling in the pending patent license arbitration and the impact of other legal proceedings;
• with respect to the October 2013 interim order issued by the panel in the pending patent license arbitration, we believe that $60 million is a reasonable estimate of the low end of the possible range of damages up to $115 million (excluding interest), and that no amount in the range constitutes a better estimate than any other amount; however, the final award could be more than the amount currently accrued, and we expect to record our estimate of interest accruing with the passage of time and may record additional charges as information develops or upon the issuance of the final award;
• the highly unpredictable nature of the semiconductor industry;
• the effect of the global economy on credit markets, financial institutions, customers, suppliers and consumers, including the increasingly uncertain macroeconomic environment;
• the negative impact on economic growth resulting from the action or inaction of the U.S. government relating to federal income tax increases, the federal debt ceiling, the federal deficit, and government spending restrictions or shutdowns;
• timing and volume of orders relative to production capacity and inability to achieve high capacity utilization rates;
• volatility of consumer demand and weakness in forecasts from our customers for products incorporating our semiconductor packages, including the recent slowdown in demand for smartphones;
• dependence on key customers;
• the performance of our business, economic and market conditions, the cash needs and investment opportunities for the business, the need for additional capacity and facilities to service customer demand and the availability of cash flow from operations or financing;
• customer modification of and follow through with respect to forecasts provided to us, including delays in forecasts with respect to smartphones and tablets;
• changes in tax rates and taxes as a result of changes in tax law, the jurisdictions in which our income is determined to be earned and taxed, the outcome of tax audits and tax ruling requests, our ability to realize deferred tax assets and the expiration of tax holidays;
• curtailment of outsourcing by our customers;
• our substantial indebtedness and restrictive covenants;
• failure to realize sufficient cash flow or access to other sources of liquidity to fund capital additions;
• the effects of a recession or other downturn in the U.S. and other economies worldwide;
• disruptions in our business or deficiencies in our controls resulting from the integration of newly acquired operations or the implementation and security of, and changes to, our enterprise resource planning and other management information systems;
• economic effects of terrorist attacks, natural disasters and military conflict;
• our ability to control costs and improve profitability;
• competition, competitive pricing and declines in average selling prices;
• fluctuations in manufacturing yields;
• dependence on international operations and sales;
• dependence on raw material and equipment suppliers and changes in raw material and precious metal costs;
• exchange rate fluctuations;
• dependence on key personnel;
• difficulties in managing growth and consolidating and integrating operations;
• enforcement of and compliance with intellectual property rights;
• environmental and other governmental regulations; and
• technological challenges.