TEMPE, Ariz. -- February 5, 2024 -- Amkor Technology, Inc. (Nasdaq: AMKR), a leading provider of semiconductor packaging and test services, today announced financial results for the fourth quarter and full year ended December 31, 2023.

•Fourth quarter net sales $1.75 billion

•Net income $118 million, earnings per diluted share $0.48

•Net sales $6.50 billion, down 8% year-on-year

•Gross profit $943 million, operating income $470 million

•Net income $360 million, earnings per diluted share $1.46

•EBITDA $1.13 billion

•Net cash from operations $1.27 billion, free cash flow $534 million

“In 2023, amid a cyclical downturn, Amkor outperformed the semiconductor industry by maintaining our strategic focus on Advanced packaging,” said Giel Rutten, Amkor’s president and chief executive officer. “Amkor gained market share, achieved record revenue in Communications, supported AI deployment with our 2.5D technology, and continued to grow ADAS and Electrification solutions in the Automotive market.”

(1) EBITDA and free cash flow are non-GAAP measures. The reconciliations to the comparable GAAP measures are included below under “Selected Operating Data.”

At December 31, 2023, total cash and short-term investments was $1.59 billion, and total debt was $1.20 billion.

On November 14, 2023, Amkor’s Board of Directors announced a 5% increase in the company’s quarterly cash dividend, from $0.075 per share to $0.07875 per share, on the company’s common stock. The increase was effective with the dividend paid on December 26, 2023. The declaration and payment of future dividends, as well as any record and payment dates, are subject to the approval of the Board of Directors.

“First quarter 2024 guidance is being driven by a more than seasonal decline in Communications following a record year and weakness in the Automotive & Industrial end market as customers work through inventory,” said Rutten.

The following information presents Amkor’s guidance for the first quarter 2024 (unless otherwise noted):

•Net sales of $1.30 billion to $1.40 billion

•Gross margin of 11.5% to 14.0%

•Net income of $8 million to $48 million, or $0.03 to $0.19 per diluted share

•Full year 2024 capital expenditures of approximately $750 million

Amkor will conduct a conference call on Monday, February 5, 2024, at 5:00 p.m. Eastern Time. This call may include material information not included in this press release. To access the live audio webcast and the accompanying slide presentation, visit the Investor Relations section of Amkor’s website, located at ir.amkor.com. The live call can also be accessed by dialing 1-877-407-4019 or 1-201-689-8337.

Amkor Technology, Inc. is the world's largest US headquartered OSAT (outsourced semiconductor assembly and test) service provider. Since its founding in 1968, Amkor has pioneered the outsourcing of IC packaging and test services and is a strategic manufacturing partner for the world’s leading semiconductor companies, foundries, and electronics OEMs. Amkor provides turnkey manufacturing services for the communication, automotive and industrial, computing, and consumer industries, including but not limited to smartphones, electric vehicles, data centers, artificial intelligence and wearables. Amkor’s operational base includes production facilities, research and development centers and sales and support offices located in key electronics manufacturing regions in Asia, Europe and the United States. For more information visit amkor.com.

Jennifer Jue

Vice President, Investor Relations and Finance (1) Advanced products include flip chip, memory and wafer-level processing and related test services.

480-786-7594

jennifer.jue@amkor.com

(2) Mainstream products include all other wirebond packaging and related test services.

In this press release, we refer to EBITDA, which is not defined by U.S. GAAP. We define EBITDA as net income before interest expense, income tax expense and depreciation and amortization. We believe EBITDA to be relevant and useful information to our investors because it provides additional information in assessing our financial operating results. Our management uses EBITDA in evaluating our operating performance, and our ability to service debt, and our ability to fund capital expenditures and pay dividends. However, EBITDA has certain limitations in that it does not reflect the impact of certain expenses on our consolidated statements of income, including interest expense, which is a necessary element of our costs because we have borrowed money in order to finance our operations, income tax expense, which is a necessary element of our costs because taxes are imposed by law, and depreciation and amortization, which is a necessary element of our costs because we use capital assets to generate income. EBITDA should be considered in addition to, and not as a substitute for, or superior to, operating income, net income or other measures of financial performance prepared in accordance with U.S. GAAP. Furthermore, our definition of EBITDA may not be comparable to similarly titled measures reported by other companies. Below is our reconciliation of EBITDA to U.S. GAAP net income.

In this press release, we refer to free cash flow, which is not defined by U.S. GAAP. We define free cash flow as net cash provided by operating activities less payments for property, plant and equipment, plus proceeds from the sale of, insurance recovery for and grants for property, plant and equipment, if applicable. We believe free cash flow to be relevant and useful information to our investors because it provides them with additional information in assessing our liquidity, capital resources and financial operating results. Our management uses free cash flow in evaluating our liquidity, and our ability to service debt, and our ability to fund capital expenditures and pay dividends. However, free cash flow has certain limitations, including that it does not represent the residual cash flow available for discretionary expenditures since other, non-discretionary expenditures, such as mandatory debt service, are not deducted from the measure. The amount of mandatory versus discretionary expenditures can vary significantly between periods. This measure should be considered in addition to, and not as a substitute for, or superior to, other measures of liquidity or financial performance prepared in accordance with U.S. GAAP, such as net cash provided by operating activities. Furthermore, our definition of free cash flow may not be comparable to similarly titled measures reported by other companies. Below is our reconciliation of free cash flow to U.S. GAAP net cash provided by operating activities.

This press release contains forward-looking statements within the meaning of the federal securities laws. You are cautioned not to place undue reliance on forward-looking statements, which are often characterized by terminology such as “may,” “will,” “should,” “expects,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “potential,” “continue” or “intend,” by the negative of these terms or other comparable terminology or by discussions of strategy, plans or intentions. All forward-looking statements in this press release are made based on our current expectations, forecasts, estimates and assumptions. Because such statements include risks and uncertainties, actual results may differ materially from those anticipated in such forward-looking statements as a result of various factors, including, but not limited to, the following:

•dependence on the cyclical and volatile semiconductor industry and vulnerability to industry downturns and declines in global economic and financial conditions;

•dependence on key customers or concentration of customers in certain end markets, such as mobile communications and automotive;

•changes in costs, quality, availability and delivery times of raw materials, components and equipment;

•health conditions or pandemics, such as COVID-19, impacting labor availability and operating capacity, capital availability, the supply chain and consumer demand for our customers’ products and services;

•fluctuations in operating results and cash flows;

•our substantial indebtedness;

•dependence on international factories and operations and risks relating to trade restrictions and regional conflict;

•the effects of business, economic, political, legal and regulatory impacts or conflicts upon our global operations;

•fluctuations in interest rates and changes in credit risk;

•competition with established competitors in the packaging and test business, the internal capabilities of integrated device manufacturers and new competitors, including foundries;

•difficulty funding our liquidity needs, including as a result of disruptions to the banking system and capital markets;

•our substantial investments in equipment and facilities to support the demand of our customers;

•difficulty attracting, retaining or replacing qualified personnel;

•difficulty achieving the relatively high-capacity utilization rates necessary to realize satisfactory gross margins given our high percentage of fixed costs;

•maintaining an effective system of internal controls;

•the absence of backlog and the short-term nature of our customers’ commitments;

•our continuing development and implementation of changes to, and maintenance and security of, our information technology systems;

•the historical downward pressure on the prices of our packaging and test services;

•challenges with integrating diverse operations;

•fluctuations in our manufacturing yields;

•any changes in tax laws, taxing authorities not agreeing with our interpretation of applicable tax laws, including whether we continue to qualify for conditional reduced tax rates, or any requirements to establish or adjust valuation allowances on deferred tax assets;

•our ability to develop new proprietary technology, protect our proprietary technology, operate without infringing the proprietary rights of others and implement new technologies;

•environmental, health and safety liabilities and expenditures;

•warranty claims, product return and liability risks, and the risk of negative publicity if our products fail, as well as the risk of litigation incident to our business;

•natural disasters and other calamities, political instability, hostilities or other disruptions;

•restrictive covenants in the indentures and agreements governing our current and future indebtedness;

•the possibility that we may decrease or suspend our quarterly dividend;

•significant severance plan obligations associated with our manufacturing operations in Korea; and

•the ability of certain of our stockholders to effectively determine or substantially influence the outcome of matters requiring stockholder approval.

Other important risk 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 discussed in the company’s Annual Report on Form 10-K for the year ended December 31, 2022 (the “Form 10-K”) and from time to time in our other reports filed with or furnished to the Securities and Exchange Commission (“SEC”). You should carefully consider the trends, risks and uncertainties described in this press release, the Form 10-K and other reports filed with or furnished to the SEC before making any investment decision with respect to our securities. If any of these trends, risks or uncertainties continues or occurs, our business, financial condition or operating results could be materially and adversely affected, the trading prices of our securities could decline, and you could lose part or all of your investment. All forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by this cautionary statement. We assume no obligation to review or update any forward-looking statements to reflect events or circumstances occurring after the date of this press release except as may be required by applicable law.