10-K – 2026-02-20 – amkr-20251231.htm

The accounting framework for determining fair value includes a hierarchy for ranking the quality and reliability of the information used to measure fair value, which enables the reader of the financial statements to assess the inputs used to develop those measurements. The fair value hierarchy consists of three tiers as follows: Level 1, defined as quoted market prices in active markets for identical assets or liabilities; Level 2, defined as inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, model-based valuation techniques for which all significant assumptions are observable in the market or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and Level 3, defined as unobservable inputs that are not corroborated by market data. For our Level 2 short-term investments, we consider factors such as actual trade data, benchmark yields, broker/dealer quotes, and other similar data obtained from quoted market prices and independent pricing vendors to determine the fair value of these assets and liabilities.

The fair values of cash, accounts receivable, trade accounts payable, capital expenditures payable and certain other current assets and accrued expenses approximate carrying values because of their short-term nature. The carrying value of certain other non-current assets and liabilities approximates fair value. Our assets and liabilities recorded at fair value on a recurring basis include restricted cash money market funds and short-term investments, including investments classified as cash equivalents. Cash equivalent money market funds and restricted cash money market funds are invested in U.S. money market funds and various U.S. and foreign bank operating and time deposit accounts, which are due on demand or carry a maturity date of less than three months when purchased. No restrictions have been imposed on us regarding withdrawal of balances with respect to our cash equivalents as a result of liquidity or other credit market issues affecting the money market funds we invest in or the counterparty financial institutions holding our deposits.
Our derivative financial instruments are valued using quoted market prices for similar assets. Counterparties to these derivative contracts are highly rated financial institutions.

We also measure certain assets and liabilities, including property, plant and equipment and goodwill, at fair value on a nonrecurring basis.

We measure the fair value of our debt for disclosure purposes. The following table presents the fair value of our debt:

December 31, 2025 December 31, 2024
Fair
Value Carrying
Value Fair
Value Carrying
Value
(In thousands)
Senior notes (Level 1) $ 511,405   $ 493,457   $ 525,562   $ 522,615  
Revolving credit facilities and term loans (Level 2) 948,501   951,789   625,818   636,845  
Total debt $ 1,459,906   $ 1,445,246   $ 1,151,380   $ 1,159,460  

The estimated fair value of our senior notes is based primarily on quoted market prices reported on or near the respective balance sheet dates. The estimated fair value of our revolving credit facilities and term loans is calculated using a discounted cash flow analysis, which utilizes market-based assumptions, including forward interest rates adjusted for credit risk.

17. Commitments and Contingencies

We generally warrant that our services will be performed in a professional and workmanlike manner and in compliance with our customers’ specifications. We accrue costs for known warranty issues. Historically, our warranty costs have been immaterial.

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AMKOR TECHNOLOGY, INC.
Notes to Consolidated Financial Statements — (Continued)

Insolvency payments associated with Nanium acquisition
In June 2025, we received $ 72.8  million for the Nanium Insolvency Receipt. The terms of the purchase agreement from our Nanium acquisition in May 2017 required us to remit any insolvency payments received to the selling shareholders, less certain costs, including tax costs, incurred by us. In 2025, we remitted $ 40.4  million to the selling shareholders. Such amounts were recorded on a net basis within selling, general and administrative expenses in our Consolidated Statements of Income and as operating cash flows within our Condensed Consolidated Statements of Cash Flows.
Legal Proceedings
We are involved in claims and legal proceedings and may become involved in other legal matters arising in the ordinary course of our business. We evaluate these claims and legal matters on a case-by-case basis to make a determination as to the impact, if any, on our business, liquidity, results of operations, financial condition or cash flows. Although the outcome of these matters is uncertain, we believe that the ultimate outcome of these claims and proceedings, individually and in the aggregate, will not have a material adverse impact on our business, liquidity, results of operations, financial condition or cash flows. Our evaluation of the potential impact of these claims and legal proceedings on our business, liquidity, results of operations, financial condition or cash flows could change in the future.

Commitments

We enter into various contracts related to the construction and development of our manufacturing facilities. As of December 31, 2025, the remaining commitments under these contracts were approximately $ 475  million.

In order to provide packaging and test services, we purchase materials under various long-term supply contracts. Future minimum payments to be made under these contracts for the period 2026 through 2035 are $ 12.1 million.

18. Business Segments, Customer Concentrations and Geographic Information

We operate as a single operating segment as managed by our Chief Executive Officer, who is considered our chief operating decision maker (“CODM”). The CODM bears the ultimate responsibility for, and is actively engaged in, the allocation of resources and the evaluation of our operating and financial results. We have concluded that we have a single operating segment based on the following:
• We are managed under a functionally-based organizational structure with the head of each function reporting directly to the CODM;
• Our CODM assesses performance, including resource allocation, trend identification and variance analysis, based on consolidated operating performance and financial results based on net income;
• Our CODM allocates resources and makes other operating decisions based on specific customer business opportunities; and
• We have an integrated process for the design, development and manufacturing services we provide to all of our customers. We also have centralized sales and administrative functions.

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AMKOR TECHNOLOGY, INC.
Notes to Consolidated Financial Statements — (Continued)

The following table presents revenue, profit or loss and significant segment expenses for our single operating segment:

For the Year Ended December 31,
2025 2024 2023
(In thousands)
Net sales $ 6,707,981   $ 6,317,692   $ 6,503,065  
Less:
Materials cost of sales 3,700,307   3,478,752   3,584,090  
Labor cost of sales 697,852   628,201   643,993  
Depreciation cost of sales 584,638   534,921   576,120  
Other cost of sales 786,585   742,606   755,709  
Selling, general and administrative 304,471   331,806   295,393  
Research and development 166,743   162,951   177,473  
Interest expense 75,444   64,945   59,000  
Income tax expense 68,503   75,481   81,710  
Other segment items (1)
( 52,678 ) ( 57,506 ) ( 32,554 )
Segment net income $ 376,116   $ 355,535   $ 362,131  

(1) Other segment items included in segment net income includes interest income, foreign currency (gain) loss, net, loss on debt retirement and other (income) expense.
The following tables represent other balances included in net income or that are regularly provided to the CODM:

For the Year Ended December 31,
2025 2024 2023
(In thousands)
Interest income $ 62,397   $ 65,541   $ 48,458  
Depreciation and amortization expense 642,008   594,663   631,508  

Capital expenditures 904,614   743,796   749,467  

December 31,
2025 2024
(In thousands)
Total assets $ 8,136,309   6,944,328  

Net sales by product group consist of the following:

For the Year Ended December 31,
2025 2024 2023
(In thousands)
Advanced Products $ 5,555,555   $ 5,174,459   $ 5,032,859  
Mainstream Products 1,152,426   1,143,233   1,470,206  
Total net sales $ 6,707,981   $ 6,317,692   $ 6,503,065  

(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.

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AMKOR TECHNOLOGY, INC.
Notes to Consolidated Financial Statements — (Continued)

Net sales by end market consist of the following :

For the Year Ended December 31,
2025 2024 2023
Communications (smartphones, tablets) 46   % 48   % 50   %
Computing (data center, infrastructure, PC/laptop, storage) 20   % 19   % 16   %
Automotive, industrial and other (ADAS, electrification, infotainment, safety) 19   % 18   % 21   %
Consumer (AR & gaming, connected home, home electronics, wearables) 15   % 15   % 13   %
Total net sales 100   % 100   % 100   %

Net sales by region based on customer headquarters location consist of the following:

For the Year Ended December 31,
2025 2024 2023
(In thousands)
Europe, Middle East and Africa $ 852,805   $ 817,875   $ 1,043,880  
Asia Pacific (excluding Japan) 733,454   716,344   704,520  
Japan 724,613   800,713   935,620  
Total foreign countries 2,310,872   2,334,932   2,684,020  
United States 4,397,109   3,982,760   3,819,045  
Total net sales $ 6,707,981   $ 6,317,692   $ 6,503,065  

In 2025, 2024 and 2023 one customer accounted for 29.8 %, 30.8 % and 27.7 % of total net sales, respectively. In 2025 and 2024, a second customer accounted for 11.1 % and 10.2 % of total net sales, respectively.

Property, plant and equipment, net, based on physical location, consist of the following:

December 31,
2025 2024
(In thousands)
China $ 255,909   $ 308,889  
Japan 141,543   139,126  
Korea 2,098,150   1,923,953  
Malaysia 47,221   55,166  
Philippines 187,169   172,180  
Portugal 162,916   130,653  
Taiwan 352,692   322,539  
Vietnam 517,847   471,581  
Other foreign countries 1,465   1,553  
Total foreign countries 3,764,912   3,525,640  
United States 105,896   50,508  
Total property, plant and equipment, net $ 3,870,808   $ 3,576,148  

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SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS

Balance at
Beginning of
Period Additions (Credited) Charged to Expense Write-offs Balance at
End of Period
(In thousands)
Deferred tax asset valuation allowance:
Year ended at December 31, 2023 $ 101,869   15,838   ( 2,896 ) $ 114,811  
Year ended at December 31, 2024 $ 114,811   ( 3,633 ) ( 4,065 ) $ 107,113  
Year ended at December 31, 2025 $ 107,113   ( 20,764 ) ( 6,993 ) $ 79,356  

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Item 9. Changes In and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our periodic reports to the SEC is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including the Chief Executive Officer and the Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure, based on the definition of “disclosure controls and procedures” in Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act of 1934, as amended. In designing and evaluating the disclosure controls and procedures, management recognizes that any disclosure controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management necessarily is required to apply its judgment in evaluating the cost-benefit relationship of possible disclosure controls and procedures.

We carried out an evaluation, under the supervision and with the participation of management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures as of December 31, 2025, and concluded those disclosure controls and procedures were effective as of that date.

Management’s Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f). Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

Internal control over financial reporting includes those policies and procedures that: (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the Company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies and procedures may deteriorate.

Management conducted an assessment of the effectiveness of our internal control over financial reporting as of December 31, 2025, based on the framework established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”). Based on the results of this evaluation, our management concluded that our internal control over financial reporting was effective as of December 31, 2025, based on criteria in Internal Control — Integrated Framework (2013) issued by the COSO.

The effectiveness of our internal control over financial reporting as of December 31, 2025, has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which appears under Item 8 of this Form 10-K.

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Changes in Internal Control Over Financial Reporting

There have been no changes in our internal control over financial reporting that occurred during the three months ended December 31, 2025 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Item 9B. Other Information

During the three months ended December 31, 2025, no director or officer of the Company adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as such terms are defined in paragraphs (a) and (c), respectively, of Item 408 of Regulation S-K promulgated under the Securities Act of 1933, as amended.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

PART III

Item 10. Directors, Executive Officers and Corporate Governance

The information required by this Item 10, with the exception of information relating to our Insider Trading Policy (the “Insider Trading Policy”) and our Code of Business Conduct (the “Code of Business Conduct”) disclosed below, is incorporated herein by reference from the material included under the captions “Proposal One: Election of Directors,” “Corporate Governance,” “Executive Officers” and “Delinquent Section 16(a) Reports” in our definitive proxy statement to be filed with the SEC pursuant to Regulation 14A within 120 days after our fiscal year ended December 31, 2025 in connection with our 2026 Annual Meeting of Stockholders (the “Proxy Statement”).

We have adopted insider trading policies and procedures governing the purchase, sale and other dispositions of securities of Amkor by directors, officers and employees that we believe are reasonably designed to promote compliance with insider trading laws, rules and regulations and applicable listing standards of the Nasdaq Global Select Market. Our insider trading policy states, among other things, that our directors, officers and employees are prohibited from trading in such securities while in possession of material, nonpublic information. The foregoing summary of our insider trading policies and procedures does not purport to be complete and is qualified by reference to our Insider Trading Policy filed as an exhibit to this Annual Report on Form 10-K.

The Code of Business Conduct is written and is applicable to all employees, including our Chief Executive Officer, Chief Financial Officer and Chief Accounting Officer. The Code of Business Conduct and our Code of Ethics for Directors, Corporate Governance Guidelines and the charters of the Audit Committee, Nominating and Governance Committee and Compensation Committee of our Board of Directors are available and maintained on our website (http://www.amkor.com). We intend to disclose on our website future amendments or waivers of the Code of Business Conduct required to be disclosed pursuant to applicable rules and regulations.

Item 11. Executive Compensation

The information required by this Item 11 is incorporated herein by reference from the material included under the captions “Director Compensation,” “Executive Compensation,” “Compensation Committee Interlocks and Insider Participation” “Pay Ratio” and “Compensation Committee Report” in the Proxy Statement.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required by this Item 12, with the exception of the equity compensation plan information presented below, is incorporated herein by reference from the material included under the caption “Security Ownership of Certain Beneficial Owners and Management” in the Proxy Statement.

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EQUITY COMPENSATION PLAN

The following table summarizes our equity compensation plan as of December 31, 2025:

(a)
Number of
Securities to be
Issued Upon
Exercise of
Outstanding
Options, Warrants and Rights
(In thousands) (b)
Weighted
Average
Exercise Price of
Outstanding
Options, Warrants and Rights (1) (c)
Number of Securities
Remaining Available
for Future Issuance
Under Equity
Compensation Plans
(Excluding Securities
Reflected in Column(a))
(In thousands)
Equity compensation plan approved by stockholders (2) 3,370  (3) $ 10.10  18,145  (4)
Equity compensation plans not approved by stockholders —  —  — 
Total equity compensation plans 3,370  18,145 

(1) Calculated without taking into account shares of common stock subject to outstanding RSUs and PSUs that will become issuable as those units vest without any cash consideration or other payment required for such shares.
(2) Consists of the 2007 Plan and the 2021 Plan.
(3) Includes 2.0 million shares of common stock subject to RSUs and PSUs, which entitle each holder to one share of common stock for each unit that vests over the holder’s period of continued service or based on the achievement of certain performance criteria.
(4) Represents the number of shares of common stock available for issuance under the 2021 Plan, as adjusted to account for full-value awards, which reduce the shares of common stock available for future issuance at a fungible ratio of 1:1.5 for each full-value award previously awarded. The 2007 Plan terminated on the date of the 2021 Annual Meeting, and, accordingly, there were no shares available for future grants under the 2007 Plan as of December 31, 2025. However, if an award under the 2021 Plan or under the 2007 Plan is forfeited, terminated, canceled, expires or is paid in cash, the shares subject to such award, to the extent of the forfeiture, termination, cancellation, expiration or cash payment, may be added back to the shares available for issuance under the 2021 Plan on a 1:1 basis for options and stock appreciation rights and on a 1.5:1 basis for all other equity awards.
The 2021 Plan, which was approved by our stockholders at the 2021 Annual Meeting, superseded and replaced the 2007 Plan. As of December 31, 2025, a total of 18.1 million shares were available for issuance under the 2021 Plan. Shares available for issuance under our 2021 Plan can be granted pursuant to stock options, restricted stock, RSUs, stock appreciation rights, PSUs and performance shares. For additional information regarding the 2007 Plan and the 2021 Plan, see Note 2 to our Consolidated Financial Statements in Part II, Item 8 of this Form 10-K.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required by this Item 13 is incorporated herein by reference from the material included under the captions “Corporate Governance - Certain Relationships and Related Transactions” and “Proposal One: Election of Directors” in the Proxy Statement.

Item 14. Principal Accountant Fees and Services

The information required by this Item 14 is incorporated herein by reference from the material included under the caption “Proposal Three: Ratification of Appointment of Independent Registered Public Accounting Firm” in the Proxy Statement.

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PART IV

Item 15.     Exhibits and Financial Statement Schedules

(a)  Financial Statements, Financial Statement Schedules and Exhibits

The financial statements and schedules filed as part of this Form 10-K are listed in the index under Part II, Item 8 of this Form 10-K.

The exhibits required by Item 601 of Regulation S-K that are filed with this Form 10-K or incorporated by reference herein are set forth below. Management contracts or compensatory plans or arrangements are identified by an asterisk.

Incorporated by Reference Included Herewith
Exhibit Number Exhibit Description Form Period Ending Exhibit Filing Date
3.1  Amended and Res tated Certificate of Incorporation.
10-Q 6/30/25 3.1 7/29/25
3.2  Amended and Restated Bylaws of Amkor Technology, Inc., effective February 20, 2025.
10-K 12/31/24 3.3 2/21/25
4.1  Specimen Common Stock Certificate.
S-1/A 4.1 3/31/98
4.2  Indenture, dated September 22, 2025, by and between Amkor Technology, Inc. and U.S. Bank Trust Company, National Association, as trustee, regarding the 5.87 5 % Senior Notes due 2033.
8-K 4.1 9/22/25
4.3  Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934.
10-K 12/31/19 4.3 2/19/20
10.1  Form of Indemnification Agreement for directors and officers.
S-1/A 10.1 3/31/98
10.2  2009 Voting Agreement, dated as of March 26, 2009, between Amkor Technology, Inc., James J. Kim and 915 Investments, LP.
8-K 10.1 4/1/09
10.3  Form of Stock Option Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*
10-Q 3/31/17 10.2 5/5/17
10.4  Form of Restricted Stock Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*
10-Q 3/31/17 10.3 5/5/17
10.5  Form of Outside Director Stock Option Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*
10-Q 3/31/17 10.4 5/5/17
10.6  Second Amended and Restated 2007 Equity Incentive Plan*
8-K 10.1 5/5/17
10.7  Amendment One to Second Amended and Restated 2007 Equity Incentive Plan*
10-Q 6/30/19 10.3 8/1/19
10.8  Form of Global Stock Option Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*
10-Q 6/30/20 10.1 7/30/20
10.9  Form of Global Restricted Stock Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*
10-Q 6/30/20 10.2 7/30/20
10.10  Form of Global Outside Director Nonstatutory Stock Option Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*
10-Q 9/30/20 10.1 10/30/20

100

Incorporated by Reference Included Herewith
Exhibit Number Exhibit Description Form Period Ending Exhibit Filing Date
10.11  Form of Global Outside Director Restricted Stock Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*
10-Q 9/30/20 10.2 10/30/20
10.12  Form of Global Performance-Vested Restricted Stock Unit Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*
8-K 10.1 2/5/21
10.13  Form of Global Time-Vested Restricted Stock Unit Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*
8-K 10.2 2/5/21
10.14  Amkor Technology, Inc. 2021 Equity Incentive Plan*
8-K 10.1 5/20/21
10.15  Amendment One to the Amkor Technology, Inc. 2021 Equity Incentive Plan*
10-K 12/31/21 10.36 2/18/22
10.16  Form of Global Non-Employee Director Nonstatutory Stock Option Award Agreement*
8-K 10.2 5/20/21
10.17  Form of Global Non-Employee Director Restricted Stock Award Agreement*
8-K 10.3 5/20/21
10.18  Form of Global Stock Option Award Agreement*
8-K 10.4 5/20/21
10.19  Form of Global Restricted Stock Award Agreement*
8-K 10.5 5/20/21
10.20  Form of Global Performance-Vested Restricted Stock Unit Award Agreement*
8-K 10.6 5/20/21
10.21  Global Performance-Vested Restricted Stock Unit Award Agreement Guillaume Marie Jean Rutten December 2023*
10-K 12/31/23 10.21 2/16/24
10.22  Global Performance-Vested Restricted Stock Unit Award Agreement Guillaume Marie Jean Rutten February 2024*
10-K 12/31/24 10.22 2/21/25
10.23  Form of Global Performance-Vested Restricted Stock Unit Award Agreement since December 2023*
10-K 12/31/23 10.22 2/16/24
10.24  Form of Global Time-Vested Restricted Stock Unit Award Agreement*
10-K 12/31/24 10.24 2/21/25
10.25  Global Time-Vested Restricted Stock Unit Award Agreement Guillaume Marie Jean Rutten December 2023*
10-K 12/31/24 10.25 2/21/25
10.26  Global Time-Vested Restricted Stock Unit Award Agreement Guillaume Marie Jean Rutten February 2024*
10-K 12/31/24 10.26 2/21/25
10.27  Form of Global Non-Employee Director Time-Vested Restricted Stock Unit Award Agreement*
10-K 12/31/21 10.35 2/18/22
10.28  Fourth Amended and Restated Non-Employee Director Compensation Policy *
10-K 12/31/24 10.30 2/21/25
10.29  Fifth Amended and Restated Non-Employee Director Compensation Policy*
10-Q 6/30/25 10.3 7/29/25
10.30  Amended and Restated Executive Incentive Bonus Plan*
8-K 10.2 5/5/17
10.31  Employment Letter Agreement, dated June 24, 2020, between Amkor Technology, Inc. and Guillaume Marie Jean Rutten.*
10-Q 6/30/20 10.3 7/30/20
10.32  Executive Severance Agreement, dated November 15, 2022, between Amkor Technology, Inc. and Giel Rutten*
10-K 12/31/22 10.30 2/22/23

101

Incorporated by Reference Included Herewith
Exhibit Number Exhibit Description Form Period Ending Exhibit Filing Date
10.33  Executive Severance Agreement, dated November 15, 2022, between Amkor Technology, Inc. and Megan Faust*
10-K 12/31/22 10.31 2/22/23
10.34  Executive Severance Agreement, dated November 15, 2022, between Amkor Technology, Inc. and Farshad Haghighi*
10-K 12/31/22 10.32 2/22/23
10.35  Executive Severance Agreement, dated November 15, 2022, between Amkor Technology, Inc. and Mark Rogers*
10-K 12/31/22 10.33 2/22/23
10.36  Executive Severance Agreement, dated February 13, 2023, between Amkor Technology, Inc. and Kevin Engel*
10-K 12/31/22 10.34 2/22/23
10.37  Retirement Agreement, dated October 21, 2025, between Amkor Technology, Inc. and Giel Rutten*
8-K 10.1 10/27/25
10.38  Employment Letter Agreement, dated October 21, 2025, between Amkor Technology, Inc. and Kevin Engel*
8-K 10.2 10/27/25
10.39  Executive Severance Agreement, dated October 21, 2025, between Amkor Technology, Inc. and Kevin Engel*
8-K 10.3 10/27/25
10.40  Credit Agreement, dated May 9, 2025, among Amkor Technology, Inc, as the Borrower, the Lenders party thereto from time to time, the L/C Issuers party thereto from time to time and Bank of America, N.A., as the Administrative Agent.
8-K 10.1 5/09/25
10.41  First Amendment to Credit Agreement, dated June 27, 2025, among Amkor Technology, Inc., as the Borrower, the Guarantors, the Non-Loan Party Equity Pledgor, the Term A-1 Lenders, the Revolving Lenders party thereto and Bank of America, N.A., as Administrative Agent.
8-K 10.1 6/27/25
19.1  Insider Trading Policy of Amkor Technology, Inc.
X
21.1  List of subsidiaries of the Registrant.
X
23.1  Consent of PricewaterhouseCoopers LLP.
X
24.1  Power of Attorney (included on the Signatures page of this Report on Form 10-K). X
31.1  Certification of Kevin Engel, Chief Executive Officer of Amkor Technology, Inc., Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934, as amended.
X
31.2  Certification of Megan Faust, Chief Financial Officer of Amkor Technology, Inc., Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934, as amended.
X
32.1  Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.**
X
97.1  Excess Compensation Recovery Policy.*
10-K 12/31/23 97.1 2/16/24
101.INS Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. X

102

Incorporated by Reference Included Herewith
Exhibit Number Exhibit Description Form Period Ending Exhibit Filing Date
101.SCH Inline XBRL Taxonomy Extension Schema Document X
101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document X
101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document X
101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document X
101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document X
104  Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) X
*  Indicates management compensatory plan, contract or arrangement.
** Furnished herewith
† Exhibit includes confidential information that has been redacted.

Item 16.     Form 10-K Summary

None.

103

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this Annual Report on Form 10-K to be signed, on its behalf by the undersigned, thereunto duly authorized.
AMKOR TECHNOLOGY, INC.

By: /s/  Kevin K. Engel
Kevin K. Engel
President and Chief Executive Officer
Date: February 20, 2026

POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Kevin K. Engel and Megan Faust, and each of them, his or her attorneys-in-fact, and agents, each with the power of substitution, for and in the name, place and stead of such person, in any and all capacities, to sign any and all amendments to this Form 10-K, and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and conforming all that said attorneys-in-fact and agents of any of them, or his, her or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this Form 10-K has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Name Title Date

/s/  Kevin K. Engel President and Chief Executive Officer February 20, 2026
Kevin K. Engel (Principal Executive Officer)

/s/  Megan Faust Executive Vice President, Chief Financial Officer, and Treasurer February 20, 2026
Megan Faust (Principal Financial Officer)

/s/  Cherie Buntyn Senior Vice President and Chief Accounting Officer February 20, 2026
Cherie Buntyn (Principal Accounting Officer)

/s/ Susan Y. Kim Chairman February 20, 2026
Susan Y. Kim

/s/  Douglas A. Alexander Director February 20, 2026
Douglas A. Alexander

/s/  Roger A. Carolin Director February 20, 2026
Roger A. Carolin

104

Name Title Date

/s/  Winston J. Churchill Director February 20, 2026
Winston J. Churchill

/s/  Daniel Liao Director February 20, 2026
Daniel Liao

/s/  MaryFrances McCourt Director February 20, 2026
MaryFrances McCourt

/s/  Robert R. Morse Director February 20, 2026
Robert R. Morse

/s/  Giel Marie Jean Rutten Director February 20, 2026
Giel Marie Jean Rutten

/s/  Gil C. Tily Director February 20, 2026
Gil C. Tily

/s/  David N. Watson Director February 20, 2026
David N. Watson

105