Amkor Technology Reports Financial Results for the Third Quarter 2025 and Announces CEO Succession Plan

Amkor Technology, Inc. (NASDAQ:AMKR), a leading provider of semiconductor packaging and test services, today announced financial results for the third quarter ended September 30, 2025 and a chief executive officer succession plan.

Third Quarter 2025 Highlights

• Net sales $1.99 billion
• Gross profit $284 million, operating income $159 million
• Net income $127 million, earnings per diluted share $0.51
• EBITDA $340 million

"Amkor delivered third quarter revenue of $1.99 billion, a 31% sequential increase, fueled by demand for Advanced packaging, which set a new revenue record," said Giel Rutten, Amkor's president and chief executive officer. "This quarter, we executed steep production ramps, achieved record revenue in our Communications and Computing end markets, and broke ground on our new Advanced packaging and test campus in Arizona, reinforcing our commitment to enable our customers' technology roadmaps and strengthen U.S. semiconductor manufacturing."

The company also announced that Mr. Rutten has informed the Board of Directors of his intention to retire as president and chief executive officer at the end of 2025. He will remain a member of the company's Board of Directors. "Giel has been instrumental in focusing Amkor's strategy on leadership in Advanced packaging and orienting the company towards high growth markets, including high performance computing and AI," said Susan Kim, the company's Chairman of the Board. "Giel has been a highly effective CEO and has positioned the company for significant long-term growth. We thank him for his dedicated work and are pleased that he will continue as member of the Board."

Following its succession planning process, the company's Board of Directors announced that it has appointed Mr. Kevin Engel, chief operating officer, to succeed Mr. Rutten as president and chief executive officer, effective January 1, 2026, and that Mr. Engel will join the Board at that time. Mr. Rutten and Mr. Engel will work together on executing a smooth leadership transition. "Kevin is an industry veteran with more than twenty years of experience with Amkor. He is uniquely qualified to lead the company when Giel retires and to continue the company's close collaboration with leading semiconductor companies," said Ms. Kim.

Quarterly Financial Results

(1) EBITDA is a non-GAAP measure. The reconciliation to the comparable GAAP measure is included below under "Selected Operating Data."

(2) During the three months ended June 30, 2025, our 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.

At September 30, 2025, total cash and short-term investments was $2.1 billion, and total debt was $1.8 billion. In October 2025, the company redeemed the remaining $400 million of its outstanding senior notes due 2027.

The company paid a quarterly dividend of $0.08269 per share on September 23, 2025. 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.

Business Outlook

The following information presents Amkor's guidance for the fourth quarter 2025 (unless otherwise noted):

• Net sales of $1.775 billion to $1.875 billion
• Gross margin of 14.0% to 15.0%, which includes an approximate $30 million expected benefit from asset sales
• Net income of $95 million to $120 million, or $0.38 to $0.48 per diluted share
• Increased full year 2025 capital expenditures to approximately $950 million

Conference Call Information

Amkor will conduct a conference call on Monday, October 27, 2025, 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.

About Amkor Technology, Inc.

Amkor Technology, Inc. (NASDAQ:AMKR) is the world's largest U.S. headquartered OSAT and is a global leader in outsourced semiconductor packaging and test services. With a strong track record of innovation, a broad and diverse geographic footprint and solid partnerships with lead customers, Amkor delivers high-quality solutions that enable the world's leading semiconductor and electronics companies to bring advanced technologies to market. The company's comprehensive portfolio includes advanced packaging, wafer-level processing, and system-in-package solutions targeting applications for smartphones, data centers, artificial intelligence, automobiles and wearables. For more information visit amkor.com

(1) Advanced products include flip chip, memory and wafer-level processing and related test services.

(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, 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.

Forward-Looking Statement Disclaimer

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;

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

• fluctuations in operating results and cash flows;

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

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

• 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;

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

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

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

• fluctuations in our manufacturing yields;

• a downturn or lower sales to customers in the automotive industry;

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

• difficulty funding our liquidity needs;

• challenges with integrating diverse operations;

• dependence on international factories and operations and risks relating to trade restrictions and regional conflict, including restrictive trade barriers, export controls, tariffs, customs and duties;

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

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

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

• our substantial indebtedness;

• fluctuations in interest rates and changes in credit risk;

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

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

• difficulty attracting, retaining or replacing qualified personnel;

• maintaining an effective system of internal controls;

• 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;

• environmental, health and safety liabilities and expenditures;

• conditions and obligations in connection with the receipt of government awards and incentives; and

• natural disasters and other calamities, health conditions or pandemics, political instability, hostilities or other disruptions.

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, 2024 (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.

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Jennifer Jue

Vice President, Investor Relations and Finance

480-786-7594

[email protected]