AMKR / Amkor Technology, Inc. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Amkor Technology, Inc.
US ˙ NasdaqGS ˙ US0316521006

Mga Batayang Estadistika
LEI 529900VHLRTKPWZJBM84
CIK 1047127
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Amkor Technology, Inc.
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
July 29, 2025 EX-3.1

Amended and Restated Certificate of Incorporation of Amkor Technology, Inc., dated as of May 15, 2025

Exhibit 3.1 AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF AMKOR TECHNOLOGY, INC. Amkor Technology, Inc., a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware (the “Corporation”), DOES HEREBY CERTIFY: FIRST: The name of the Corporation is “Amkor Technology, Inc.”. The date of filing of its original Certificate of Incorporation with

July 29, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC.

July 29, 2025 EX-10.3

Fifth Amended and Restated Non-Employee Director Compensation Policy

Exhibit 10.3 Fifth Amended and Restated Amkor Technology, Inc. Non-Employee Director Compensation Policy Amended: April 24, 2025 Each member of the Board of Directors (the “Board”) of Amkor Technology, Inc., a Delaware corporation (the “Company”), who is a non-employee director of the Company (each such member, a “Non-Employee Director”) will be eligible to receive the compensation described in th

July 28, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 28, 2025 AMKOR TECHNOLOGY, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 28, 2025 AMKOR TECHNOLOGY, INC.

July 28, 2025 EX-99.1

Amkor Technology Reports Financial Results for the Second Quarter 2025

Amkor Technology Reports Financial Results for the Second Quarter 2025 TEMPE, Ariz.

July 1, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 27, 2025 AMKOR TECHNOLOGY, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 27, 2025 AMKOR TECHNOLOGY, INC.

July 1, 2025 EX-10.1

, 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

Execution Version FIRST AMENDMENT TO CREDIT AGREEMENT FIRST AMENDMENT TO CREDIT AGREEMENT (this “Amendment”), dated as of June 27, 2025, by and among AMKOR TECHNOLOGY, INC.

May 22, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of the registrant as specified in its charter) Delaware 000-29472 (State or other jurisdiction of incorporation or organization) (Commission File Number) 2045 East Innovation Circle, Tempe, AZ 85284 (Address of principal executive offices) (Zip Code) Mark

May 22, 2025 EX-1.01

Exhibit 1.01 - Conflict Minerals Report for the reporting period January 1, 202

Exhibit 1.01 Conflict Minerals Report of Amkor Technology, Inc. This Conflict Minerals Report for the year ended December 31, 2024 (this “Report”) of Amkor Technology, Inc. (the “Company,” “Amkor,” “we,” or “us”) 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 charact

May 20, 2025 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 15, 2025 AMKOR TECHNOLOGY, INC.

May 13, 2025 EX-10.1

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.

Exhibit 10.1 CREDIT AGREEMENT dated as of May 9, 2025, among AMKOR TECHNOLOGY, INC., as the Borrower, THE LENDERS PARTY HERETO, and BANK OF AMERICA, N.A., as Administrative Agent BOFA SECURITIES, INC., WELLS FARGO SECURITIES, LLC, MUFG BANK, LTD., SUMITOMO MITSUI BANKING CORPORATION, and DBS BANK LTD. as Joint Bookrunners and Joint Lead Arrangers TABLE OF CONTENTS Page ARTICLE I DEFINITIONS Sectio

May 13, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 9, 2025 AMKOR TECHNOLOGY, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 9, 2025 AMKOR TECHNOLOGY, INC.

April 29, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC

April 28, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 28, 2025 AMKOR TECHNOLOGY, INC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 28, 2025 AMKOR TECHNOLOGY, INC.

April 28, 2025 EX-99.1

Amkor Technology Reports Financial Results for the First Quarter 2025

Amkor Technology Reports Financial Results for the First Quarter 2025 TEMPE, Ariz.

April 4, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. ) Filed by the Registrant ☒       Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(

April 4, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. ) Filed by the Registrant ☒       Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by R

March 25, 2025 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. ) Filed by the Registrant ☒       Filed by a party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by R

February 21, 2025 EX-10.24

Form of Global Time-Vested Restricted Stock Unit Award Agreement*

Exhibit 10.24 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL TIME-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Time-Vested Restricted Stock Unit Award Agreement, including the general terms and conditions for all non-U.S. Participants and the additional terms and conditions for certain countries, all as set forth in the appen

February 21, 2025 EX-19.1

Insider Trading Policy of Amkor Technology, Inc.

Exhibit 19.1 Amkor Technology, Inc. INSIDER TRADING POLICY (As of November 15, 2023) 1.POLICY PURPOSE: This Policy provides guidelines with respect to transactions in the securities of Amkor Technology, Inc. (the “Company”) and other companies and the handling of confidential information about the Company and companies with which the Company does business or competes. The Company’s Board of Direct

February 21, 2025 EX-10.30

Fourth Amended and Restated Non-Employee Director Compensation Policy

Exhibit 10.30 Fourth Amended and Restated Amkor Technology, Inc. Non-Employee Director Compensation Policy Amended: October 31, 2024 Each member of the Board of Directors (the “Board”) of Amkor Technology, Inc., a Delaware corporation (the “Company”), who is a non-employee director of the Company (each such member, a “Non-Employee Director”) will be eligible to receive the compensation described i

February 21, 2025 EX-21.1

List of subsidiaries of the Registrant.

Exhibit 21.1 AMKOR TECHNOLOGY, INC. LIST OF SUBSIDIARIES Subsidiary Jurisdiction of Organization Amkor Advanced Technology Taiwan, Inc. Taiwan Amkor Assembly & Test (Shanghai) Co., Ltd. China Amkor Technology Arizona, Inc. Arizona Amkor Technology Euroservices, S.A.S. France Amkor Technology Germany GmbH Germany Amkor Technology Japan, Inc. Japan Amkor Technology Korea, Inc. Korea Amkor Technology

February 21, 2025 EX-10.25

Global Time-Vested Restricted Stock Unit Award Agreement Guillaume Marie Jean Rutten December 2023*

Exhibit 10.25 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL TIME-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Time-Vested Restricted Stock Unit Award Agreement, including the general terms and conditions for all non-U.S. Participants and the additional terms and conditions for certain countries, all as set forth in the appen

February 21, 2025 EX-10.22

Global Performance-Vested Restricted Stock Unit Award Agreement Guillaume Marie Jean Rutten February 2024*

Exhibit 10.22 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL PERFORMANCE-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Performance-Vested Restricted Stock Unit Award Agreement, including the performance goals set forth in the Appendix A attached hereto, the general terms and conditions for all non-U.S. Participants and the add

February 21, 2025 EX-3.3

Amended and Restated Bylaws of Amkor Technology, Inc., effective February 20, 2025.

Exhibit 3.3 AMENDED AND RESTATED BYLAWS OF AMKOR TECHNOLOGY, INC. (as of February 20, 2025) TABLE OF CONTENTS Page ARTICLE I STOCKHOLDERS 1 1.1 ANNUAL MEETINGS 1 1.2 SPECIAL MEETINGS 1 1.3 NOTICE OF MEETINGS 1 1.4 NOMINATIONS 2 1.5 NOTICE OF STOCKHOLDER BUSINESS 7 1.6 ADJOURNMENTS 10 1.7 QUORUM 10 1.8 ORGANIZATION 10 1.9 VOTING; PROXIES 11 1.10 REMOTE COMMUNICATION 12 1.11 FIXING DATE FOR DETERMIN

February 21, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2024 Commission File Number 000-29472 Amkor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2024 Commission File Number 000-29472 Amkor Technology, Inc. (Exact name of registrant as specified in its charter) Delaware 23-1722724 (State or other jurisdiction of incorporation or organizat

February 21, 2025 EX-10.26

Global Time-Vested Restricted Stock Unit Award Agreement Guillaume Marie Jean Rutten February 2024*

Exhibit 10.26 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL TIME-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Time-Vested Restricted Stock Unit Award Agreement, including the general terms and conditions for all non-U.S. Participants and the additional terms and conditions for certain countries, all as set forth in the appen

February 10, 2025 EX-99.1

Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2024

Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2024 TEMPE, Ariz.

February 10, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 10, 2025 AMKOR TECHNOLOGY,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 10, 2025 AMKOR TECHNOLOGY, INC.

December 16, 2024 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 15, 2024 AMKOR TECHNOLOGY, INC.

December 16, 2024 EX-99.1

Amkor Technology Names John Liu to Board of Directors

News Release Amkor Technology Names John Liu to Board of Directors TEMPE, Ariz. - December 16, 2024 - Amkor Technology, Inc. (Nasdaq: AMKR), a leading provider of semiconductor packaging and test services, announced today that John Liu has been appointed as a new member of the company’s Board of Directors. Mr. Liu has been the chief executive officer of Essex Equity Capital Management, a financial

October 29, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2024 or ☐ TRANSITION REPORT PURSU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY,

October 28, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 28, 2024 AMKOR TECHNOLOGY, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 28, 2024 AMKOR TECHNOLOGY, INC.

October 28, 2024 EX-99.1

Amkor Technology Reports Financial Results for the Third Quarter 2024

Amkor Technology Reports Financial Results for the Third Quarter 2024 TEMPE, Ariz.

October 4, 2024 SC 13D/A

AMKR / Amkor Technology, Inc. / KIM JAMES J - AMENDMENT NO. 18 TO SC 13D Activist Investment

Amendment No. 18 to SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 18)* AMKOR TECHNOLOGY, INC. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 031652100 (CUSIP Number) James J. Kim 1500 E. Lancaster Avenue Paoli, PA 19301-9713 Telephone: (480) 575-7253 (Nam

October 4, 2024 EX-99.1

[Signature Page Follows]

EX-99.1 3 d899338dex991.htm EX-99.1 EXHIBIT 99.1 This Eighteenth Amended and Restated Agreement made by the undersigned persons certifies that each undersigned person agrees that the Schedule 13D/A, and all amendments thereto, to which this Exhibit 99.1 is attached, is filed on behalf of each of them and the Group. The “Group” (as defined in Rule 13d-5(b)) may be deemed to be composed of the follo

October 4, 2024 EX-99.2

[NO FURTHER TEXT; SIGNATURE PAGE FOLLOWS]

EX-99.2 4 d899338dex992.htm EX-99.2 Exhibit 99.2 GUARANTY dated as of October 2, 2024 made by Susan Y. Kim having a legal residence in Pennsylvania, and Susan Y. Kim, as Trustee of the Susan Y. Kim Trust of December 31, 1987, as amended and restated, a trust governed by the laws of Pennsylvania (individually, or if more than one, collectively, the “Guarantor”), in favor of JPMorgan Chase Bank, N.A

October 4, 2024 EX-24.1

LIMITED POWER OF ATTORNEY

EX-24.1 2 d899338dex241.htm EX-24.1 Exhibit 24.1 LIMITED POWER OF ATTORNEY Know all by these presents, that each of the undersigned hereby makes, constitutes and appoints Mark N. Rogers, Vincent Pecora, Brian D. Short and Heike K. Sullivan (any of whom may act individually) as the true and lawful attorney-in-fact of each of the undersigned, with full power and authority as hereinafter described on

September 18, 2024 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 16, 2024 AMKOR TECHNOLOGY, INC.

September 18, 2024 EX-99.1

James J. Kim to Retire as Executive Chairman Susan Y. Kim to become Chairman of the Board

News Release James J. Kim to Retire as Executive Chairman Susan Y. Kim to become Chairman of the Board TEMPE, Ariz. – September 18, 2024 - Amkor Technology, Inc. (Nasdaq: AMKR), a leading provider of semiconductor packaging and test services, announced today that James Kim will be stepping down as Executive Chairman of Amkor and retiring from the company effective October 31, 2024. Susan Kim, Amko

July 30, 2024 EX-10.1

Third Amended and Restated Non-Employee Director Compensation Policy

Exhibit 10.1 Third Amended and Restated Amkor Technology, Inc. Non-Employee Director Compensation Policy Amended: May 14, 2024 Each member of the Board of Directors (the “Board”) of Amkor Technology, Inc., a Delaware corporation (the “Company”), who is a non-employee director of the Company (each such member, a “Non-Employee Director”) will be eligible to receive the compensation described in this

July 30, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC.

July 29, 2024 EX-99.1

Amkor Technology Reports Financial Results for the Second Quarter 2024

Amkor Technology Reports Financial Results for the Second Quarter 2024 TEMPE, Ariz.

July 29, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 29, 2024 AMKOR TECHNOLOGY, INC.

May 28, 2024 EX-1.01

Exhibit 1.01 - Conflict Minerals Report for the reporting period January 1, 2023, to December 31, 2023, as required by Items 1.01 and 1.02 of this Form.

Exhibit 1.01 Conflict Minerals Report of Amkor Technology, Inc. This Conflict Minerals Report for the year ended December 31, 2023 (this “Report”) of Amkor Technology, Inc. (the “Company,” “Amkor,” “we,” or “us”) 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 charact

May 28, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of the registrant as specified in its charter) Delaware 000-29472 (State or other jurisdiction of incorporation or organization) (Commission File Number) 2045 East Innovation Circle, Tempe, AZ 85284 (Address of principal executive offices) (Zip Code) Mark

May 17, 2024 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 14, 2024 AMKOR TECHNOLOGY, INC.

May 1, 2024 EX-4.4

Form of Indenture.

Exhibit 4.4 AMKOR TECHNOLOGY, INC. INDENTURE Dated as of [ ], [ ] U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION Trustee TABLE OF CONTENTS PAGE ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.01. Definitions 1 Section 1.02. Other Definitions 5 Section 1.03. Incorporation by Reference of Trust Indenture Act 5 Section 1.04. Rules of Construction 6 ARTICLE 2 THE SECURITIES 7 Section 2

May 1, 2024 EX-25.1

Statement of Eligibility of the Trustee on Form T-1 of Trustee under the Trust Indenture Act of 1939, as amended.

Exhibit 25.1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S. E

May 1, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC

May 1, 2024 S-3ASR

As filed with the Securities and Exchange Commission on May 1, 2024

Table of Contents As filed with the Securities and Exchange Commission on May 1, 2024 Registration No.

May 1, 2024 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables FORM S-3 (Form Type) AMKOR TECHNOLOGY, INC.

April 29, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 29, 2024 AMKOR TECHNOLOGY, INC.

April 29, 2024 EX-99.1

Amkor Technology Reports Financial Results for the First Quarter 2024

Amkor Technology Reports Financial Results for the First Quarter 2024 TEMPE, Ariz.

April 16, 2024 PX14A6G

Amkor Technology Inc (AMKR) Vote Yes: Item #4 – Shareholder Proposal Requesting Annual Diversity and Inclusion Efforts Report Annual Meeting: May 14, 2024

Main Post Office, P.O. Box 751 www.asyousow.org Berkeley, CA 94704 BUILDING A SAFE, JUST, AND SUSTAINABLE WORLD SINCE 1992 Notice of Exempt Solicitation Pursuant to Rule 14a-103 Name of the Registrant: Amkor Technology Inc (AMKR) Name of persons relying on exemption: As You Sow® Address of persons relying on exemption: Main Post Office, P.O. Box 751, Berkeley, CA 94704 Written materials are submit

April 12, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. ) Filed by the Registrant ☒       Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by R

February 16, 2024 EX-97.1

Excess Compensation Recovery Policy.*

Exhibit 97.1 AMKOR TECHNOLOGY, INC. EXCESS COMPENSATION RECOVERY POLICY (Adopted on November 15, 2023) 1. POLICY PURPOSE The Board of Directors (the “Board of Directors”) of Amkor Technology, Inc. (the “Company”) has established this Excess Compensation Recovery Policy (the “Policy”) to provide for the recovery of certain incentive compensation in the event of an Accounting Restatement (as defined

February 16, 2024 EX-10.21

Global Performance-Vested Restricted Stock Unit Award Agreement Guillaume Marie Jean Rutten December 2023*

Exhibit 10.21 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL PERFORMANCE-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Performance-Vested Restricted Stock Unit Award Agreement, including the performance goals set forth in the Appendix A attached hereto, the general terms and conditions for all non-U.S. Participants and the add

February 16, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2023 Commission File Number 000-29472 Amkor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2023 Commission File Number 000-29472 Amkor Technology, Inc. (Exact name of registrant as specified in its charter) Delaware 23-1722724 (State or other jurisdiction of incorporation or organizat

February 16, 2024 EX-21.1

List of subsidiaries of the Registrant.

Exhibit 21.1 AMKOR TECHNOLOGY, INC. LIST OF SUBSIDIARIES Subsidiary Jurisdiction of Organization Amkor Advanced Technology Taiwan, Inc. Taiwan Amkor Assembly & Test (Shanghai) Co., Ltd. China Amkor Technology Arizona, Inc. Arizona Amkor Technology Euroservices, S.A.S. France Amkor Technology Germany GmbH Germany Amkor Technology Japan, Inc. Japan Amkor Technology Korea, Inc. Korea Amkor Technology

February 16, 2024 EX-10.22

Form of Global Performance-Vested Restricted Stock Unit Award Agreement

Exhibit 10.22 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL PERFORMANCE-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Performance-Vested Restricted Stock Unit Award Agreement, including the performance goals set forth in the Appendix A attached hereto, the general terms and conditions for all non-U.S. Participants and the add

February 13, 2024 SC 13G/A

AMKR / Amkor Technology, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0278-amkortechnologyinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)* Name of issuer: Amkor Technology Inc Title of Class of Securities: Common Stock CUSIP Number: 031652100 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to desig

February 9, 2024 SC 13G/A

AMKR / Amkor Technology, Inc. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6 )* Amkor Technology Inc (Name of Issuer) Common Stock (Title of Class of Securities) 031652100 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

February 5, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 5, 2024 AMKOR TECHNOLOGY, INC.

February 5, 2024 EX-99.1

Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2023

Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2023 TEMPE, Ariz.

December 18, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 14, 2023 AMKOR TECHNOLOGY, INC.

December 15, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 11, 2023 AMKOR TECHNOLOGY,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 11, 2023 AMKOR TECHNOLOGY, INC.

November 1, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2023 or ☐ TRANSITION REPORT PURSU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY,

October 30, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 30, 2023 AMKOR TECHNOLOGY, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 30, 2023 AMKOR TECHNOLOGY, INC.

October 30, 2023 EX-99

Amkor Technology Reports Financial Results for the Third Quarter 2023

Amkor Technology Reports Financial Results for the Third Quarter 2023 TEMPE, Ariz.

September 11, 2023 EX-99.1

[Signature Page Follows]

EX-99.1 3 d846499dex991.htm EX-99.1 EXHIBIT 99.1 This Seventeenth Amended and Restated Agreement made by the undersigned persons certifies that each undersigned person agrees that the Schedule 13D/A, and all amendments thereto, to which this Exhibit 99.1 is attached, is filed on behalf of each of them and the Group. The “Group” (as defined in Rule 13d-5(b)) may be deemed to be composed of the foll

September 11, 2023 SC 13D/A

AMKR / AMKOR Technology Inc. / KIM JAMES J - AMENDMENT NO. 17 TO SC 13D Activist Investment

Amendment No. 17 to SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 17)* AMKOR TECHNOLOGY, INC. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 031652100 (CUSIP Number) James J. Kim 1500 E. Lancaster Avenue Paoli, PA 19301-9713 Telephone: (480) 575-7253 (Nam

September 11, 2023 EX-24

LIMITED POWER OF ATTORNEY

EX-24 2 d846499dex24.htm EX-24 Exhibit 24 LIMITED POWER OF ATTORNEY Know all by these presents, that the undersigned hereby makes, constitutes and appoints Mark N. Rogers, Vincent Pecora, Brian D. Short and Heike K. Sullivan (either of whom may act individually) as the undersigned’s true and lawful attorney-in-fact, with full power and authority as hereinafter described on behalf of and in the nam

September 7, 2023 EX-1.1

Underwriting Agreement, dated as of September 6, 2023, by and among Amkor Technology, Inc., 915 Investments, LP, and J.P. Morgan Securities LLC and Morgan Stanley & Co. LLC, as representatives of the several underwriters named in Schedule 1 thereto.

EX-1.1 Exhibit 1.1 Execution Version AMKOR TECHNOLOGY, INC. 10,000,000 Shares of Common Stock Underwriting Agreement September 6, 2023 J.P. Morgan Securities LLC Morgan Stanley & Co. LLC As Representatives of the several Underwriters listed in Schedule 1 hereto c/o J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179 c/o Morgan Stanley & Co. LLC 1585 Broadway New York, NY 10036 L

September 7, 2023 EX-FILING FEES

Calculation of Filing Fee Table (Form Type) Amkor Technology, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1 – Newly Registered Securities and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry F

Exhibit 107 Calculation of Filing Fee Table 424(b)(7) (Form Type) Amkor Technology, Inc.

September 7, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 6, 2023 AMKOR TECHNOLOGY,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 6, 2023 AMKOR TECHNOLOGY, INC.

September 7, 2023 424B7

Common Stock Preferred Stock Debt Securities

Form 424(b)(7) Table of Contents Filed Pursuant to Rule 424(b)(7) Registration No.

September 6, 2023 424B7

Common Stock Preferred Stock Debt Securities

Form 424(b)(7) Table of Contents Filed Pursuant to Rule 424(b)(7) Registration No.

September 6, 2023 FWP

Amkor Technology Announces Secondary Offering of 10 million Shares of Common Stock by the Kim Family

Free Writing Prospectus Dated September 6, 2023 Filed Pursuant to Rule 433 Registration Statement No.

August 1, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC.

July 31, 2023 EX-99

Amkor Technology Reports Financial Results for the Second Quarter 2023

Amkor Technology Reports Financial Results for the Second Quarter 2023 TEMPE, Ariz.

July 31, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 31, 2023 AMKOR TECHNOLOGY, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 31, 2023 AMKOR TECHNOLOGY, INC.

May 26, 2023 EX-1.01

Exhibit 1.01 - Conflict Minerals Report for the reporting period January 1, 2022 to December 31, 2022, as required by Items 1.01 and 1.02 of this Form.

EX-1.01 Exhibit 1.01 Conflict Minerals Report of Amkor Technology, Inc. This Conflict Minerals Report for the year ended December 31, 2022 (this “Report”) of Amkor Technology, Inc. (the “Company,” “Amkor,” “we,” or “us”) 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

May 26, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of the registrant as specified in its charter) Delaware 000-29472 (State or other jurisdiction of incorpo

SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of the registrant as specified in its charter) Delaware 000-29472 (State or other jurisdiction of incorporation or organization) (Commission File Number) 2045 East Innovation Circle, Tempe, AZ 85284 (Address of principal executive offices) (Zip Code) M

May 19, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 16, 2023 AMKOR TECHNOLOGY, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 16, 2023 AMKOR TECHNOLOGY, INC.

May 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC

May 1, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2023 AMKOR TECHNOLOGY, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 1, 2023 AMKOR TECHNOLOGY, INC.

May 1, 2023 EX-99.1

Amkor Technology Reports Financial Results for the First Quarter 2023

Amkor Technology Reports Financial Results for the First Quarter 2023 TEMPE, Ariz.

April 12, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

February 22, 2023 EX-10.25

Second Amended and Restated Non-Employee Director Compensation Policy

Exhibit 10.25 Second Amended and Restated Amkor Technology, Inc. Non-Employee Director Compensation Policy Amended: February 7, 2023 Each member of the Board of Directors (the “Board”) of Amkor Technology, Inc., a Delaware corporation (the “Company”), who is a non-employee director of the Company (each such member, a “Non-Employee Director”) will be eligible to receive the compensation described i

February 22, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2022 Commission File Number 000-29472 Amkor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2022 Commission File Number 000-29472 Amkor Technology, Inc. (Exact name of registrant as specified in its charter) Delaware 23-1722724 (State of incorporation) (I.R.S. Employer Identification N

February 22, 2023 EX-10.31

Executive Severance Agreement, dated November 15, 2022, between Amkor Technology, Inc. and Megan Faust*

Exhibit 10.31 AMKOR TECHNOLOGY, INC. EXECUTIVE SEVERANCE AGREEMENT THIS EXECUTIVE SEVERANCE AGREEMENT (this “Agreement”) is made and entered into as of the 15th day of November, 2022 (the “Effective Date”), by and between Amkor Technology, Inc., a Delaware corporation (the “Company”), and Megan Faust (the “Executive”). WHEREAS, the Executive and the Company desire to enter into this Agreement to p

February 22, 2023 EX-10.35

Executive Employment Agreement, effective January 1, 2023, between Amkor Technology Korea, Inc. and Steve Shin*†

Certain identified information has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential.

February 22, 2023 EX-10.30

Executive Severance Agreement, dated November 15, 2022, between Amkor Technology, Inc. and Giel Rutten*

Exhibit 10.30 AMKOR TECHNOLOGY, INC. EXECUTIVE SEVERANCE AGREEMENT THIS EXECUTIVE SEVERANCE AGREEMENT (this “Agreement”) is made and entered into as of the 15th day of November, 2022 (the “Effective Date”), by and between Amkor Technology, Inc., a Delaware corporation (the “Company”), and Giel Rutten (the “Executive”). WHEREAS, the Executive and the Company desire to enter into this Agreement to p

February 22, 2023 EX-21.1

List of subsidiaries of the Registrant.

Exhibit 21.1 AMKOR TECHNOLOGY, INC. LIST OF SUBSIDIARIES Subsidiary Jurisdiction of Organization Amkor Advanced Technology Taiwan, Inc. Taiwan Amkor Assembly & Test (Shanghai) Co., Ltd. China Amkor Technology Euroservices, S.A.S. France Amkor Technology Holding, B.V. Netherlands Amkor Technology Holding, B.V., Germany (A Branch of a Netherlands Company) Germany Amkor Technology Japan, Inc. Japan A

February 22, 2023 EX-10.32

Executive Severance Agreement, dated November 15, 2022, between Amkor Technology, Inc. and Farshad Haghighi*

Exhibit 10.32 AMKOR TECHNOLOGY, INC. EXECUTIVE SEVERANCE AGREEMENT THIS EXECUTIVE SEVERANCE AGREEMENT (this “Agreement”) is made and entered into as of the 15th day of November, 2022 (the “Effective Date”), by and between Amkor Technology, Inc., a Delaware corporation (the “Company”), and Farshad Haghighi (the “Executive”). WHEREAS, the Executive and the Company desire to enter into this Agreement

February 22, 2023 EX-10.34

Executive Severance Agreement, dated February 13, 2023, between Amkor Technology, Inc. and Kevin Engel*

Exhibit 10.34 AMKOR TECHNOLOGY, INC. EXECUTIVE SEVERANCE AGREEMENT THIS EXECUTIVE SEVERANCE AGREEMENT (this “Agreement”) is made and entered into as of the 13th day of February, 2023 (the “Effective Date”), by and between Amkor Technology, Inc., a Delaware corporation (the “Company”), and Kevin Engel (the “Executive”). WHEREAS, the Executive and the Company desire to enter into this Agreement to p

February 22, 2023 EX-10.33

Executive Severance Agreement, dated November 15, 2022, between Amkor Technology, Inc. and Mark Rogers*

Exhibit 10.33 AMKOR TECHNOLOGY, INC. EXECUTIVE SEVERANCE AGREEMENT THIS EXECUTIVE SEVERANCE AGREEMENT (this “Agreement”) is made and entered into as of the 15th day of November, 2022 (the “Effective Date”), by and between Amkor Technology, Inc., a Delaware corporation (the “Company”), and Mark Rogers (the “Executive”). WHEREAS, the Executive and the Company desire to enter into this Agreement to p

February 13, 2023 EX-99.1

Amkor Technology Reports Record Financial Results for the Fourth Quarter and Full Year 2022

Amkor Technology Reports Record Financial Results for the Fourth Quarter and Full Year 2022 TEMPE, Ariz.

February 13, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 13, 2023 AMKOR TECHNOLOGY, INC.

February 10, 2023 SC 13G/A

AMKR / Amkor Technology, Inc. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5 )* Amkor Technology Inc (Name of Issuer) Common Stock (Title of Class of Securities) 031652100 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box t

February 9, 2023 SC 13G

AMKR / Amkor Technology, Inc. / VANGUARD GROUP INC - SCHEDULE 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Name of issuer: Amkor Technology Inc. Title of Class of Securities: Common Stock CUSIP Number: 031652100 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13d-1(b) ☐ R

November 18, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 15, 2022 AMKOR TECHNOLOGY,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 15, 2022 AMKOR TECHNOLOGY, INC.

November 3, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2022 or ☐ TRANSITION REPORT PURSU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY,

October 31, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 31, 2022 AMKOR TECHNOLOGY, INC.

October 31, 2022 EX-99.1

Amkor Technology Reports Record Financial Results for the Third Quarter 2022

Amkor Technology Reports Record Financial Results for the Third Quarter 2022 TEMPE, Ariz.

August 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2022 or ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC.

August 4, 2022 EX-10.1

Amended and Restated Amkor Technology, Inc. Non-Employee Director Compensation Policy

Exhibit 10.1 AMKOR TECHNOLOGY, INC. NON-EMPLOYEE DIRECTOR COMPENSATION POLICY Adopted: February 8, 2022 (Amended: May 17, 2022) Each member of the Board of Directors (the ?Board?) of Amkor Technology, Inc., a Delaware corporation (the ?Company?), who is a non-employee director of the Company (each such member, a ?Non-Employee Director?) will be eligible to receive the compensation described in thi

August 1, 2022 EX-99.1

Amkor Technology Reports Financial Results for the Second Quarter 2022

Amkor Technology Reports Financial Results for the Second Quarter 2022 TEMPE, Ariz.

August 1, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 1, 2022 AMKOR TECHNOLOGY, INC.

May 20, 2022 EX-1.01

Exhibit 1.01 - Conflict Minerals Report for the reporting period January 1, 2021 to December 31, 2021, as required by Items 1.01 and 1.02 of this Form.

Exhibit 1.01 Conflict Minerals Report of Amkor Technology, Inc. This Conflict Minerals Report for the year ended December 31, 2021 (this ?Report?) of Amkor Technology, Inc. (the ?Company,? ?Amkor,? ?we,? or ?us?) 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 charact

May 20, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 17, 2022 AMKOR TECHNOLOGY, INC.

May 20, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of the registrant as specified in its charter) Delaware 000-29472 (State or other jurisdiction of incorpo

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of the registrant as specified in its charter) Delaware 000-29472 (State or other jurisdiction of incorporation or organization) (Commission File Number) 2045 East Innovation Circle, Tempe, AZ 85284 (Address of principal executive offices) (Zip Code) Mark

May 5, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2022 or ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC

May 2, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 2, 2022 AMKOR TECHNOLOGY, INC.

May 2, 2022 EX-99.1

Amkor Technology Reports Financial Results for the First Quarter 2022

Amkor Technology Reports Financial Results for the First Quarter 2022 TEMPE, Ariz.

April 12, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defi

March 29, 2022 EX-10.1

Secured Facility Agreement, dated March 28, 2022, between Amkor Technology, Inc., as parent, Amkor Technology Singapore Holding Pte. Ltd., as borrower, the subsidiaries of the borrower set forth in the schedules thereto, as original guarantors, the Hongkong and Shanghai Banking Corporation Limited, Singapore Branch (“HSBC”) and DBS Bank Ltd., each as mandated lead arranger and bookrunner, the other financial institutions party thereto, as lenders, HSBC, as agent and offshore security trustee, and CTBC Bank Co., Ltd., as onshore security agent.

Exhibit 10.1 CLIFFORD CHANCE PTE LTD Execution Version US$600,000,000 SECURED FACILITY AGREEMENT DATED 28 MARCH 2022 FOR AMKOR TECHNOLOGY SINGAPORE HOLDING PTE. LTD. ARRANGED BY THE HONGKONG AND SHANGHAI BANKING CORPORATION LIMITED, SINGAPORE BRANCH DBS BANK LTD. WITH THE HONGKONG AND SHANGHAI BANKING CORPORATION LIMITED, SINGAPORE BRANCH ACTING AS AGENT AND OFFSHORE SECURITY AGENT CTBC BANK CO.,

March 29, 2022 8-K

Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 28, 2022 AMKOR TECHNOLOGY, INC.

February 18, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2021 Commission File Number 000-29472 Amkor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2021 Commission File Number 000-29472 Amkor Technology, Inc. (Exact name of registrant as specified in its charter) Delaware 23-1722724 (State of incorporation) (I.R.S. Employer Identification N

February 18, 2022 EX-10.36

Amendment One to the Amkor Technology, Inc. 2021 Equity Incentive Plan*

Exhibit 10.36 AMENDMENT ONE TO THE AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN Pursuant to the authority reserved to it in Section 22 of the Amkor Technology, Inc. 2021 Equity Incentive Plan (the ?Plan?), the Board of Directors (the ?Board?) of Amkor Technology, Inc. (the ?Company?) hereby amends the Plan as follows, effective February 8, 2022: Section 12 of the Plan is hereby amended in its

February 18, 2022 EX-10.34

Non-Employee Director Compensation Policy

Exhibit 10.34 Amkor Technology, Inc. Non-Employee Director Compensation Policy Adopted: February 8, 2022 Each member of the Board of Directors (the ?Board?) of Amkor Technology, Inc., a Delaware corporation (the ?Company?), who is a non-employee director of the Company (each such member, a ?Non-Employee Director?) will be eligible to receive the compensation described in this Non-Employee Director

February 18, 2022 EX-10.35

Form of Global Non-Employee Director Time-Vested Restricted Stock Unit Award Agreement*

Exhibit 10.35 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL NON-EMPLOYEE DIRECTOR TIME-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Non-Employee Director Restricted Stock Unit Award Agreement, including the general terms and conditions for all non-U.S. Participants and the additional terms and conditions for certain countrie

February 18, 2022 EX-21.1

List of subsidiaries of the Registrant.

Exhibit 21.1 AMKOR TECHNOLOGY, INC. LIST OF SUBSIDIARIES Subsidiary Jurisdiction of Organization Amkor Advanced Technology Taiwan, Inc. Taiwan Amkor Assembly & Test (Shanghai) Co., Ltd. China Amkor Technology Euroservices, S.A.S. France Amkor Technology Holding, B.V. Netherlands Amkor Technology Holding, B.V., Germany (A Branch of a Netherlands Company) Germany Amkor Technology Japan, Inc. Japan A

February 14, 2022 EX-99.1

Amkor Technology Reports Record Financial Results for the Fourth Quarter and Full Year 2021

Amkor Technology Reports Record Financial Results for the Fourth Quarter and Full Year 2021 TEMPE, Ariz.

February 14, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 14, 2022 AMKOR TECHNOLOGY, INC.

February 8, 2022 SC 13G/A

AMKR / Amkor Technology, Inc. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4 )* Amkor Technology Inc (Name of Issuer) Common Stock (Title of Class of Securities) 031652100 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

January 4, 2022 EX-99.1

[Signature Page Follows]

EXHIBIT 99.1 This Sixteenth Amended and Restated Agreement made by the undersigned persons certifies that each undersigned person agrees that the Schedule 13D/A, and all amendments thereto, to which this Exhibit 99.1 is attached, is filed on behalf of each of them and the Group. The ?Group? (as defined in Rule 13d-5(b)) may be deemed to be composed of the following persons: ? James J. Kim ? James

January 4, 2022 SC 13D/A

AMKR / Amkor Technology, Inc. / KIM JAMES J - AMENDMENT NO. 16 TO SC 13D Activist Investment

Amendment No. 16 to SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 16)* AMKOR TECHNOLOGY, INC. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 031652100 (CUSIP Number) James J. Kim 1500 E. Lancaster Avenue Paoli, PA 19301-9713 Telephone: (480) 575-7253 (Nam

January 4, 2022 EX-99.2

AMKOR TECHNOLOGY, INC. 2009 VOTING AGREEMENT

Exhibit 99.2 AMKOR TECHNOLOGY, INC. 2009 VOTING AGREEMENT This Voting Agreement (this ?AGREEMENT?) is made and entered into as of March 26, 2009 by and among Amkor Technology, Inc., a Delaware corporation (the ?COMPANY?), James J. Kim (?MR. KIM?), and 915 Investments, LP (collectively, the ?INVESTORS?). Capitalized terms contained and not otherwise defined herein shall have the meaning ascribed to

October 29, 2021 EX-10.1

Separation and Release Agreement, dated September 27, 2021, between Amkor Technology, Inc. and John C. Stone*

Exhibit 10.1 SEPARATION AND RELEASE AGREEMENT In connection with the cessation of my service with Amkor Technology, Inc. (?Company?) as an officer and employee, and in order to settle as fully as possible all known and unknown claims I, John C. Stone, might have against the Company and all related parties, the Company and I enter into this Separation and Release Agreement (?Agreement?). I acknowle

October 29, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2021 or ☐ TRANSITION REPORT PURSU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY,

October 25, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 25, 2021 AMKOR TECHNOLOGY, INC.

October 25, 2021 EX-99.1

Amkor Technology Reports Record Financial Results for the Third Quarter 2021

Amkor Technology Reports Record Financial Results for the Third Quarter 2021 Third Quarter Highlights ?Record net sales $1.

September 28, 2021 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 14, 2021 AMKOR TECHNOLOGY, INC.

September 17, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 14, 2021 AMKOR TECHNOLOGY, INC.

July 30, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2021 or ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC.

July 26, 2021 EX-99.1

Amkor Technology Reports Financial Results for the Second Quarter 2021

EX-99.1 2 amkr6302021erex-991.htm EX-99.1 Amkor Technology Reports Financial Results for the Second Quarter 2021 Second Quarter Highlights •Record net sales $1.41 billion, up 20% year-on-year •Gross margin 19.4%, operating income margin 11.0% •Record second quarter net income $126 million, record second quarter earnings per diluted share $0.51 •EBITDA $295 million TEMPE, Ariz. - July 26, 2021 - Am

July 26, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 26, 2021 AMKOR TECHNOLOGY, INC.

May 20, 2021 EX-10.6

Form of Global Performance-Vested Restricted Stock Unit Award Agreement

EX-10.6 7 d182081dex106.htm EX-10.6 Exhibit 10.6 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL PERFORMANCE-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Performance-Vested Restricted Stock Unit Award Agreement, including the performance goals set forth in the Appendix A attached hereto, the general terms and conditions for al

May 20, 2021 EX-10.4

Form of Global Stock Option Award Agreement

Exhibit 10.4 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL STOCK OPTION AWARD AGREEMENT Unless otherwise defined herein, the terms defined in the Amkor Technology, Inc. 2021 Equity Incentive Plan (the ?Plan?) will have the same defined meanings in this Global Stock Option Award Agreement, including the general terms and conditions for non-U.S. Participants and the additional terms and c

May 20, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 18, 2021 AMKOR TECHNOLOGY, INC.

May 20, 2021 EX-10.7

Form of Global Time-Vested Restricted Stock Unit Award Agreement

Exhibit 10.7 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL TIME-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Time-Vested Restricted Stock Unit Award Agreement, including the general terms and conditions for all non-U.S. Participants and the additional terms and conditions for certain countries, all as set forth in the append

May 20, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of registrant as specified in its charter) Delaware 000-29472 23-1722724 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 2045 East Innovation Circle, Tempe, AZ 85284 (Address of pri

May 20, 2021 EX-10.2

Form of Global Non-Employee Director Nonstatutory Stock Option Award Agreement*

Exhibit 10.2 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL NON-EMPLOYEE DIRECTOR NONSTATUTORY STOCK OPTION AWARD AGREEMENT Unless otherwise defined herein, the terms defined in the Amkor Technology, Inc. 2021 Equity Incentive Plan (the ?Plan?) will have the same defined meanings in this Global Non-Employee Director Nonstatutory Stock Option Award Agreement, including the general terms a

May 20, 2021 EX-10.5

Form of Global Restricted Stock Award Agreement

Exhibit 10.5 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL RESTRICTED STOCK AWARD AGREEMENT Unless otherwise defined herein, the terms defined in the Amkor Technology, Inc. Second 2021 Equity Incentive Plan (the ?Plan?) will have the same defined meanings in this Global Restricted Stock Award Agreement, including the general terms and conditions for all non-U.S. Participants and the add

May 20, 2021 EX-10.3

Form of Global Non-Employee Director Restricted Stock Award Agreement

Exhibit 10.3 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN GLOBAL NON-EMPLOYEE DIRECTOR RESTRICTED STOCK AWARD AGREEMENT Unless otherwise defined herein, the terms defined in the Amkor Technology, Inc. 2021 Equity Incentive Plan (the ?Plan?) will have the same defined meanings in this Global Non-Employee Director Restricted Stock Award Agreement, including the general terms and conditions for

May 20, 2021 EX-10.1

Amkor Technology, Inc. 2021 Equity Incentive Plan

Exhibit 10.1 AMKOR TECHNOLOGY, INC. 2021 EQUITY INCENTIVE PLAN 1. Purposes of the Plan. The purposes of this Plan are: ? to attract and retain the best available personnel for positions of substantial responsibility, ? to provide incentives to individuals who perform services to the Company or its Subsidiaries, and ? to promote the success of the Company?s business. The Plan permits the grant of I

May 20, 2021 EX-1.01

Exhibit 1.01 - Conflict Minerals Report, for the reporting period January 1, 2020 to December 31, 2020

EX-1.01 2 exhibit101-2020conflictmin.htm EX-1.01 Exhibit 1.01 Conflict Minerals Report of Amkor Technology, Inc. All information contained in this Conflict Minerals Report (the “Report”), 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, assumption

May 18, 2021 S-8

As filed with the Securities and Exchange Commission on May 18, 2021

As filed with the Securities and Exchange Commission on May 18, 2021 Registration No.

May 18, 2021 S-8 POS

As filed with the Securities and Exchange Commission on May 18, 2021

As filed with the Securities and Exchange Commission on May 18, 2021 Registration No.

April 30, 2021 S-3ASR

- S-3ASR

Table of Contents As filed with the Securities and Exchange Commission on April 30, 2021 Registration No.

April 30, 2021 EX-4.4

Form of Indenture.

Exhibit 4.4 AMKOR TECHNOLOGY, INC. INDENTURE Dated as of [ ], [ ] U.S. BANK NATIONAL ASSOCIATION Trustee TABLE OF CONTENTS PAGE ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.01. Definitions 1 Section 1.02. Other Definitions. 5 Section 1.03. Incorporation by Reference of Trust Indenture Act 5 Section 1.04. Rules of Construction 6 ARTICLE 2 THE SECURITIES 7 Section 2.01. Issuable

April 30, 2021 EX-25.1

Statement of Eligibility of the Trustee on Form T-1 of Trustee under the Trust Indenture Act of 1939, as amended.

EX-25.1 5 d142021dex251.htm EX-25.1 Exhibit 25.1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) U.S. BANK NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter

April 30, 2021 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC

April 26, 2021 EX-99.1

Amkor Technology Reports Financial Results for the First Quarter 2021

Amkor Technology Reports Financial Results for the First Quarter 2021 First Quarter Highlights •Record first quarter net sales $1.

April 26, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 26, 2021 AMKOR TECHNOLOGY, INC.

April 12, 2021 DEF 14A

2021 Equity Incentive Plan, incorporated by reference to Exhibit A to the Registrant’s Definitive Proxy Statement on Schedule 14A, filed April 12, 2021 (Reg. No. 000-29472)

SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Pursuant to ?240.

March 16, 2021 EX-99.1

Fifteenth Amended and Restated Agreement regarding joint filing

EX-99.1 EXHIBIT 99.1 This Fifteenth Amended and Restated Agreement made by the undersigned persons certifies that each undersigned person agrees that the Schedule 13D/A, and all amendments thereto, to which this Exhibit 99.1 is attached, is filed on behalf of each of them and the Group. The “Group” (as defined in Rule 13d-5(b)) may be deemed to be composed of the following persons: • James J. Kim

March 16, 2021 SC 13D/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 15)* AMKOR TECHNOLOGY, INC. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Sec

Amendment No. 15 to SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 15)* AMKOR TECHNOLOGY, INC. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 031652100 (CUSIP Number) James J. Kim 1500 E. Lancaster Avenue Paoli, PA 19301-9713 Telephone: (480) 575-7253 (Nam

February 19, 2021 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2020 Commission File Number 000-29472 Amkor Technology, Inc. (Exact name of registrant as specified in its charter) Delaware 23-1722724 (State of incorporation) (I.R.S. Employer Identification N

February 19, 2021 EX-21.1

List of subsidiaries of the Registrant.

EX-21.1 2 amkr123120ex211.htm EX-21.1 Exhibit 21.1 AMKOR TECHNOLOGY, INC. LIST OF SUBSIDIARIES Subsidiary Jurisdiction of Organization Amkor Advanced Technology Taiwan, Inc. Taiwan Amkor Assembly & Test (Shanghai) Co., Ltd. China Amkor Technology Euroservices, S.A.S. France Amkor Technology Holding, B.V. Netherlands Amkor Technology Holding, B.V., Germany (A Branch of a Netherlands Company) German

February 12, 2021 SC 13G/A

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3 )* Amkor Technology Inc (Name of Issuer) Common Stock (Title of Class of Securities) 031652100 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

February 8, 2021 EX-99.1

Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2020 Annual Growth of 25% Drove Record Revenue and EPS

NOT FOR RELEASE Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2020 Annual Growth of 25% Drove Record Revenue and EPS Fourth Quarter 2020 Highlights: •Net sales $1.

February 8, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 8, 2021 AMKOR TECHNOLOGY, INC.

February 5, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 2, 2021 AMKOR TECHNOLOGY, INC.

February 5, 2021 EX-10.2

Form of Global Time-Vested Restricted Stock Unit Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*

Exhibit 10.2 AMKOR TECHNOLOGY, INC. SECOND AMENDED AND RESTATED 2007 EQUITY INCENTIVE PLAN GLOBAL TIME-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Time-Vested Restricted Stock Unit Award Agreement, including the general terms and conditions for all non-U.S. Participants and the additional terms and conditions for certain countries, al

February 5, 2021 EX-10.1

Form of Global Performance-Vested Restricted Stock Unit Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*

Exhibit 10.1 AMKOR TECHNOLOGY, INC. SECOND AMENDED AND RESTATED 2007 EQUITY INCENTIVE PLAN GLOBAL PERFORMANCE-VESTED RESTRICTED STOCK UNIT AWARD AGREEMENT Unless otherwise defined herein, each term used in this Global Performance-Vested Restricted Stock Unit Award Agreement, including the general terms and conditions for all non-U.S. Participants and the additional terms and conditions for certain

October 30, 2020 EX-10.2

Form of Global Outside Director Restricted Stock Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*

AMKOR TECHNOLOGY, INC. SECOND AMENDED AND RESTATED 2007 EQUITY INCENTIVE PLAN GLOBAL OUTSIDE DIRECTOR RESTRICTED STOCK AWARD AGREEMENT Unless otherwise defined herein, the terms defined in the Amkor Technology, Inc. Second Amended and Restated 2007 Equity Incentive Plan (the “Plan”) will have the same defined meanings in this Global Outside Director Restricted Stock Award Agreement, including the

October 30, 2020 EX-10.1

Form of Global Outside Director Nonstatutory Stock Option Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*

AMKOR TECHNOLOGY, INC. SECOND AMENDED AND RESTATED 2007 EQUITY INCENTIVE PLAN GLOBAL OUTSIDE DIRECTOR NONSTATUTORY STOCK OPTION AWARD AGREEMENT Unless otherwise defined herein, the terms defined in the Amkor Technology, Inc. Second Amended and Restated 2007 Equity Incentive Plan (the “Plan”) will have the same defined meanings in this Global Outside Director Nonstatutory Stock Option Award Agreeme

October 30, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY,

October 26, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 26, 2020 AMKOR TECHNOLOGY, INC.

October 26, 2020 EX-99.1

Amkor Technology Reports Financial Results for the Third Quarter 2020 and the Initiation of a Quarterly Cash Dividend

News Release Amkor Technology Reports Financial Results for the Third Quarter 2020 and the Initiation of a Quarterly Cash Dividend Third Quarter Highlights •Record third quarter net sales $1.

July 31, 2020 S-8 POS

- S-8 POS

S-8 POS 1 amkor-sx8pos.htm S-8 POS As filed with the Securities and Exchange Commission on July 31, 2020 Registration No. 333-62891 Registration No. 333-86161 Registration No. 333-63430 Registration No. 333-100814 Registration No. 333-104601 Registration No. 333-113512 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STAT

July 31, 2020 S-8 POS

- S-8 POS

As filed with the Securities and Exchange Commission on July 31, 2020 Registration No.

July 31, 2020 S-8 POS

- S-8 POS

As filed with the Securities and Exchange Commission on July 31, 2020 Registration No.

July 31, 2020 S-8 POS

- S-8 POS

S-8 POS 1 amkor-sx8pos.htm S-8 POS As filed with the Securities and Exchange Commission on July 31, 2020 Registration No. 333-62891 Registration No. 333-86161 Registration No. 333-63430 Registration No. 333-100814 Registration No. 333-104601 Registration No. 333-113512 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STAT

July 31, 2020 S-8 POS

- S-8 POS

As filed with the Securities and Exchange Commission on July 31, 2020 Registration No.

July 31, 2020 S-8 POS

- S-8 POS

As filed with the Securities and Exchange Commission on July 31, 2020 Registration No.

July 30, 2020 EX-10.2

Form of Global Restricted Stock Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*

EX-10.2 3 a102-exhibitamkorxglob.htm EX-10.2 Exhibit 10.2 AMKOR TECHNOLOGY, INC. SECOND AMENDED AND RESTATED 2007 EQUITY INCENTIVE PLAN GLOBAL RESTRICTED STOCK AWARD AGREEMENT Unless otherwise defined herein, the terms defined in the Amkor Technology, Inc. Second Amended and Restated 2007 Equity Incentive Plan (the “Plan”) will have the same defined meanings in this Global Restricted Stock Award A

July 30, 2020 EX-10.4

Separation Agreement and Release, effective July 4, 2020, between Amkor Technology, Inc. and Stephen D. Kelley.*

Exhibit 10.4 SEPARATION AND RELEASE AGREEMENT In connection with the cessation of my service with Amkor Technology, Inc. (“Company”) as a director, officer and employee, and in order to settle as fully as possible all known and unknown claims I, Stephen D. Kelley, might have against the Company and all related parties, the Company and I enter into this Separation and Release Agreement (“Agreement”

July 30, 2020 EX-10.1

Form of Global Stock Option Award Agreement under the Second Amended and Restated 2007 Equity Incentive Plan.*

Exhibit 10.1 AMKOR TECHNOLOGY, INC. SECOND AMENDED AND RESTATED 2007 EQUITY INCENTIVE PLAN GLOBAL STOCK OPTION AWARD AGREEMENT Unless otherwise defined herein, the terms defined in the Amkor Technology, Inc. Second Amended and Restated 2007 Equity Incentive Plan (the “Plan”) will have the same defined meanings in this Global Stock Option Award Agreement, including the general terms and conditions

July 30, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC.

July 30, 2020 EX-10.3

Employment Letter Agreement, dated June 24, 2020, between Amkor Technology, Inc. and Guillaume Marie Jean Rutten.*

EX-10.3 4 a103-exhibitamkorrutte.htm EX-10.3 Exhibit 10.3 June 24, 2020 Giel Rutten Dear Giel: On behalf of Amkor Technology, Inc. (“Amkor”), I am very pleased to extend to you this continuing offer of employment, effective as June 17, 2020, on the following terms: Position: You will serve as President and Chief Executive Officer of Amkor. You will report directly to Amkor’s Board of Directors (th

July 27, 2020 EX-99.1

Amkor Technology Reports Financial Results for the Second Quarter 2020

EX-99.1 2 amkr6302020erex-991.htm EX-99.1 News Release Amkor Technology Reports Financial Results for the Second Quarter 2020 Second Quarter Highlights •Second quarter net sales $1.17 billion, up 31% year-on-year •Operating income $87 million, operating margin 7.4% •Net income $55 million, earnings per diluted share $0.23 •EBITDA $209 million TEMPE, Ariz. - July 27, 2020 - Amkor Technology, Inc. (

July 27, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 27, 2020 AMKOR TECHNOLOGY, INC.

July 7, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 4, 2020 AMKOR TECHNOLOGY, INC.

June 26, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 24, 2020 AMKOR TECHNOLOGY, INC.

June 19, 2020 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 17, 2020 AMKOR TECHNOLOGY, INC.

June 19, 2020 EX-99.1

Amkor Announces Leadership Change

Exhibit 99.1 Amkor Announces Leadership Change TEMPE, Ariz.—June 17, 2020 —Amkor Technology, Inc. (NASDAQ: AMKR) today announced that Giel Rutten, Amkor’s executive vice president since January 2014, has been appointed to serve as president and chief executive officer and as a director of the company. He succeeds Steve Kelley, who is leaving after more than seven years of valuable service to Amkor

June 17, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

8-K 1 a8-kxamkrjune2020.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 17, 2020 AMKOR TECHNOLOGY, INC. (Exact name of registrant as specified in its charter) DELAWARE 000-29472 23-1722724 (State or Other Jurisdiction of

June 17, 2020 EX-99.1

Amkor Announces Leadership Change

Exhibit 99.1 Amkor Announces Leadership Change TEMPE, Ariz.—June 17, 2020 —Amkor Technology, Inc. (NASDAQ: AMKR) today announced that Giel Rutten, Amkor’s executive vice president since January 2014, has been appointed to serve as president and chief executive officer and as a director of the company. He succeeds Steve Kelley, who is leaving after more than seven years of valuable service to Amkor

May 27, 2020 EX-1.01

Exhibit 1.01 - Conflict Minerals Report, for the reporting period January 1, 2019 to December 31, 2019

EX-1.01 2 a2019sdcmrex.htm EXHIBIT 1.01 Exhibit 1.01 Conflict Minerals Report of Amkor Technology, Inc. All information contained in this Conflict Minerals Report (the “Report”), 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 oth

May 27, 2020 SD

- SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of registrant as specified in its charter) Delaware 000-29472 23-1722724 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 2045 East Innovation Circle, Tempe, AZ 85284 (Address of pri

May 21, 2020 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 19, 2020 AMKOR TECHNOLOGY, INC.

April 30, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC

April 27, 2020 EX-99.1

Amkor Technology Reports Financial Results for the First Quarter 2020

News Release Amkor Technology Reports Financial Results for the First Quarter 2020 First Quarter Highlights • First quarter net sales $1.

April 27, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 27, 2020 AMKOR TECHNOLOGY, INC.

April 13, 2020 DEF 14A

AMKR / Amkor Technology, Inc. DEF 14A - - DEF 14A

SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant þ Filed by a Party other than the Registrant ¨ Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) þ Definitive Proxy Statement o Definitive Additional Materials o Soliciting Material Pursuant to §240.

March 20, 2020 SC 13D/A

AMKR / Amkor Technology, Inc. / KIM JAMES J - AMENDMENT NO. 13 TO SC 13D Activist Investment

Amendment No. 13 to SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 14)* AMKOR TECHNOLOGY, INC. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 031652100 (CUSIP Number) James J. Kim 2045 East Innovation Circle Tempe, Arizona 85284 Telephone: (480) 575-7253 (

March 20, 2020 EX-99.1

Fourteenth Amended and Restated Agreement regarding joint filing

EX-99.1 EXHIBIT 99.1 This Fourteenth Amended and Restated Agreement made by the undersigned persons certifies that each undersigned person agrees that the Schedule 13D/A, and all amendments thereto, to which this Exhibit 99.1 is attached, is filed on behalf of each of them and the Group. The “Group” (as defined in Rule 13d-5(b)) may be deemed to be composed of the following persons: • James J. Kim

February 19, 2020 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2019 Commission File Number 000-29472 Amkor Technology, Inc. (Exact name of registrant as specified in its charter) Delaware 23-1722724 (State of incorporation) (I.R.S. Employer Identification N

February 19, 2020 EX-21.1

List of subsidiaries of the Registrant.

Exhibit 21.1 AMKOR TECHNOLOGY, INC. LIST OF SUBSIDIARIES Subsidiary Jurisdiction of Organization Amkor Advanced Technology Taiwan, Inc. Taiwan Amkor Assembly & Test (Shanghai) Co., Ltd. China Amkor Technology Euroservices, S.A.S. France Amkor Technology Holding, B.V. Netherlands Amkor Technology Holding, B.V., Germany (A Branch of a Netherlands Company) Germany Amkor Technology Korea, Inc. Korea A

February 19, 2020 EX-4.3

Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934.

Exhibit 4.3 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Amkor Technology, Inc. (“we,” “our,” or the “Company”) has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended: our common stock. The general terms and provisions of our authorized common stock are summarized below. This

February 12, 2020 SC 13G/A

AMKR / Amkor Technology, Inc. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* AMKOR TECHNOLOGY INC (Name of Issuer) Common Stock (Title of Class of Securities) 031652100 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sc

February 10, 2020 EX-99.1

Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2019

News Release Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2019 Fourth Quarter 2019 Highlights: • Record net sales $1.

February 10, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 10, 2020 AMKOR TECHNOLOGY, INC.

December 26, 2019 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 23, 2019 AMKOR TECHNOLOGY, INC.

December 26, 2019 EX-10.2

Guaranty by Amkor Technology, Inc. in favor of Sumitomo Mitsui Banking Corporation and other financial institutions, dated as of December 23, 2019 (English translation)

EX-10.2 Exhibit 10.2 印 紙 2019年12月23日 (貸付人) 株式会社三井住友銀行 株式会社日本政策投資銀行 株式会社ã¿ãšã»銀行 株式会社三菱UFJ銀行 ãŠã¨ã“ã,債 務 者 ãŠãªã¾ã^ ãŠã¨ã“ã, 2045 East Innovation Circle, Tempe, AZ 85284, the United States of America 連帯保証人 ãŠãªã¾ã^ Amkor Technology, Inc. /s/ Megan Faust Name: Megan Faust Title: Executive Vice President—Chief Financial Officer 連帯保証人(以下「乙」ã¨ã„ã„ã¾ã™)ã¯、2019年12月23日付ã,·ãƒ³ã,¸ã,±ãƒ¼ãƒ^ãƒãƒ¼ãƒ³契約書 (以下「原契

December 26, 2019 EX-10.3

Deed of Guaranty by Amkor Technology Singapore Holding Pte. Ltd. in favor of Sumitomo Mitsui Banking Corporation and other financial institutions, dated as of December 23, 2019 (English translation)

EX-10.3 4 d841984dex103.htm EX-10.3 Exhibit 10.3 印 紙 2019年12月23日 (貸付人) 株式会社三井住友銀行 株式会社日本政策投資銀行 株式会社ã¿ãšã»銀行 株式会社三菱UFJ銀行ãŠã¨ã“ã,債 務 者ãŠãªã¾ã^ ãŠã¨ã“ã, 491B River Valley Road #12-03 Valley Point, Singapore (248373) 連帯保証人ãŠãªã¾ã^ Amkor Technology Singapore Holding Pte. Ltd. [Common Seal] In the presence of: /s/ Richard Lyn Monson Name: RICHARD LYN MONSON Title: Director /s/ Chang Mee Wah Name: CHANG

December 26, 2019 EX-10.1

Syndicated Loan Agreement among J-Devices Corporation, Sumitomo Mitsui Banking Corporation and other financial institutions, dated as of December 23, 2019 (English translation)

EX-10.1 Exhibit 10.1 SYNDICATED LOAN AGREEMENT dated as of December 23, 2019 among J-DEVICES CORPORATION as Borrower SUMITOMO MITSUI BANKING CORPORATION as Arranger and Agent DEVELOPMENT BANK OF JAPAN INC. as Joint-Arranger and FINANCIAL INSTITUTIONS AS STIPULATED IN 3 OF EXHIBIT 1 as Lenders Translation For Reference Only TABLE OF CONTENTS Chapter 1 Definitions - 1 - Article 1-1 (Definitions) - 1

October 31, 2019 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY,

October 28, 2019 EX-99.1

Amkor Technology Reports Financial Results for the Third Quarter 2019

News Release Amkor Technology Reports Financial Results for the Third Quarter 2019 Third Quarter Highlights •Third quarter net sales $1,084 million, up 21% sequentially •Operating income $79 million •Net income $54 million, earnings per diluted share $0.

October 28, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 28, 2019 AMKOR TECHNOLOGY, INC.

August 1, 2019 EX-10.3

Amendment One to Second Amended and Restated 2007 Equity Incentive Plan*

AMENDMENT ONE TO THE AMKOR TECHNOLOGY, INC. SECOND AMENDED AND RESTATED 2007 EQUITY INCENTIVE PLAN Pursuant to the authority reserved to it in Section 21 of the Amkor Technology, Inc. Second Amended and Restated 2007 Equity Incentive Plan (the “Plan”), the Board of Directors of Amkor Technology, Inc. (the “Board”) hereby amends the Plan as follows, effective May 15, 2019: Section 12(d) of the Plan

August 1, 2019 EX-10.2

Amendment to Loan and Security Agreement, dated as of July 8, 2019, by and amount Amkor Technology Singapore Holding Pte, Ltd., Bank of America, N.A. and other financial institutions.

amkr63019ex102 EXECUTION VERSION FIRST AMENDMENT to LOAN AND SECURITY AGREEMENT THIS FIRST AMENDMENT TO LOAN AND SECURITY AGREEMENT (“Amendment”), dated as of July 8, 2019 (the “Amendment Date”), is among AMKOR TECHNOLOGY SINGAPORE HOLDING PTE.

August 1, 2019 EX-10.1

Retirement and Release Agreement, dated May 15, 2019, between Amkor Technology, Inc. and Gil C. Tily*

amkr63019ex101

August 1, 2019 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY, INC.

July 29, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 29, 2019 AMKOR TECHNOLOGY, INC.

July 29, 2019 EX-99.1

Amkor Technology Reports Financial Results for the Second Quarter 2019

News Release Amkor Technology Reports Financial Results for the Second Quarter 2019 Second Quarter Highlights • Second quarter net sales $895 million • Operating income $23 million • Net loss $9 million, earnings per diluted share ($0.

June 10, 2019 8-K

Financial Statements and Exhibits, Other Events

8-K 1 mrogersgc.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 10, 2019 AMKOR TECHNOLOGY, INC. (Exact name of registrant as specified in its charter) DELAWARE 000-29472 23-1722724 (State or Other Jurisdiction of Incorpor

June 10, 2019 EX-99.1

Amkor Appoints Mark Rogers as General Counsel

Exhibit 99.1 News Release Amkor Appoints Mark Rogers as General Counsel Tempe, Ariz., June 10, 2019 — Amkor Technology, Inc. (NASDAQ: AMKR) today announced that Mark N. Rogers has joined the Company as executive vice president, general counsel and corporate secretary, reporting to Steve Kelley, Amkor’s president and chief executive officer. Rogers succeeds Gil Tily, who has retired as general coun

May 31, 2019 EX-99.1

EX-99.1

Exhibit 99.1 A Schedule 13D was filed by James J. Kim and those members of the reporting group who then constituted the group on November 28, 2005, as amended by Amendment No. 1 filed with the Securities and Exchange Commission (the "Commission") on April 4, 2008, Amendment No. 2 filed with the Commission on March 19, 2009, Amendment No. 3 filed with the Commission on April 16, 2009, Amendment No.

May 29, 2019 SD

AMKR / Amkor Technology, Inc. SD - - SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Amkor Technology, Inc. (Exact name of registrant as specified in its charter) Delaware 000-29472 23-1722724 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 2045 East Innovation Circle, Tempe, AZ 85284 (Address of pri

May 29, 2019 EX-1.01

Exhibit 1.01 - Conflict Minerals Report, for the reporting period January 1, 2018 to December 31, 2018

Exhibit 1.01 Conflict Minerals Report of Amkor Technology, Inc. All information contained in this Conflict Minerals Report (the “Report”), 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 including, among other things

May 20, 2019 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 15, 2019 AMKOR TECHNOLOGY, INC.

May 15, 2019 8-K

Current Report

8-K 1 appointandretiredirector8-k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 15, 2019 AMKOR TECHNOLOGY, INC. (Exact name of registrant as specified in its charter) DELAWARE 000-29472 23-1722724 (State or Other Jurisdi

May 15, 2019 EX-99.1

Amkor Names Daniel Liao and Gil Tily to Board of Directors

News Release Amkor Names Daniel Liao and Gil Tily to Board of Directors Tempe, Ariz.

May 3, 2019 10-Q

Quarterly Report - 10-Q

10-Q 1 amkr3311910q.htm 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2019 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 00

May 2, 2019 EX-99.1

Amkor Technology Reports Financial Results for the First Quarter 2019

News Release Amkor Technology Reports Financial Results for the First Quarter 2019 First Quarter Highlights • First quarter net sales $895 million • Operating income $13 million • Net income ($23) million, earnings per diluted share ($0.

May 2, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 2, 2019 AMKOR TECHNOLOGY, INC.

April 12, 2019 DEF 14A

AMKR / Amkor Technology, Inc. DEF 14A

SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant þ Filed by a Party other than the Registrant ¨ Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2) þ Definitive Proxy Statement o Definitive Additional Materials o Soliciting Material Pursuant to Rule 14a-12 AMKOR TECHNOLOGY, INC.

March 25, 2019 EX-99.1

EX-99.1

Exhibit 99.1 A Schedule 13D was filed by James J. Kim and those members of the reporting group who then constituted the group on November 28, 2005, as amended by Amendment No. 1 filed with the Securities and Exchange Commission (the "Commission") on April 4, 2008, Amendment No. 2 filed with the Commission on March 19, 2009, Amendment No. 3 filed with the Commission on April 16, 2009, Amendment No.

March 15, 2019 EX-4.1

Indenture, dated March 15, 2019, by and between Amkor Technology, Inc. and U.S. Bank National Association, as trustee, regarding the 6.625% Senior Notes due 2027.

EX-4.1 2 d712238dex41.htm EX-4.1 Exhibit 4.1 AMKOR TECHNOLOGY, INC. 6.625% SENIOR NOTES DUE 2027 INDENTURE Dated as of March 15, 2019 U.S. BANK NATIONAL ASSOCIATION Trustee TABLE OF CONTENTS Page ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.01. Definitions 1 Section 1.02. Other Definitions 18 Section 1.03. Incorporation by Reference of Trust Indenture Act 19 Section 1.04. Rules

March 15, 2019 EX-99.1

Amkor Technology Completes Sale of $525 Million of its 6.625% Senior Notes due 2027 and Announces Notice of Full Redemption of its 6.375% Senior Notes due 2022

EX-99.1 Exhibit 99.1 News Release Amkor Technology Completes Sale of $525 Million of its 6.625% Senior Notes due 2027 and Announces Notice of Full Redemption of its 6.375% Senior Notes due 2022 TEMPE, AZ – March 15, 2019 – Amkor Technology, Inc. (Nasdaq: AMKR) (the “Company”) today announced that it has completed its previously announced offering of $525 million aggregate principal amount of its 6

March 15, 2019 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Other Events

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 15, 2019 AMKOR TECHNOLOGY, INC.

March 13, 2019 EX-99.1

Amkor Technology Announces Pricing of $525 Million of its 6.625% Senior Notes due 2027 and Intention to Redeem Senior Notes due 2022

Exhibit 99.1 News Release Amkor Technology Announces Pricing of $525 Million of its 6.625% Senior Notes due 2027 and Intention to Redeem Senior Notes due 2022 TEMPE, AZ – March 13, 2019 – Amkor Technology, Inc. (Nasdaq: AMKR) (the “Company”) today announced that it has priced its offering of $525 million aggregate principal amount of its 6.625% Senior Notes due 2027 (the “2027 Notes”) in a private

March 13, 2019 8-K

Financial Statements and Exhibits, Other Events

8-K 1 a8k525mnotesdue2027pricing.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 13, 2019 AMKOR TECHNOLOGY, INC. (Exact name of registrant as specified in its charter) DELAWARE 000-29472 23-1722724 (State or Other Jurisd

March 12, 2019 EX-99.1

Amkor Technology Announces Proposed Offering of Senior Notes due 2027 and Intention to Redeem Senior Notes due 2022

Exhibit 99.1 News Release Amkor Technology Announces Proposed Offering of Senior Notes due 2027 and Intention to Redeem Senior Notes due 2022 TEMPE, AZ – March 12, 2019 – Amkor Technology, Inc. (Nasdaq: AMKR) (the “Company”) today announced that it intends to offer, subject to market and other conditions, $525 million aggregate principal amount of senior notes due 2027 (the “2027 Notes”) in a priv

March 12, 2019 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 12, 2019 AMKOR TECHNOLOGY, INC.

February 22, 2019 EX-21.1

List of subsidiaries of the Registrant.

Exhibit 21.1 AMKOR TECHNOLOGY, INC. LIST OF SUBSIDIARIES Subsidiary Jurisdiction of Organization Amkor Advanced Technology Taiwan, Inc. Taiwan Amkor Assembly & Test (Shanghai) Co., Ltd. China Amkor Technology Euroservices, S.A.S. France Amkor Technology Holding, B.V. Netherlands Amkor Technology Holding, B.V., Germany (A Branch of a Netherlands Company) Germany Amkor Technology Korea, Inc. Korea A

February 22, 2019 10-K

AMKR / Amkor Technology, Inc. 10-K (Annual Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2018 Commission File Number 000-29472 Amkor Technology, Inc. (Exact name of registrant as specified in its charter) Delaware (State of incorporation) 23-1722724 (I.R.S. Employer Identification N

February 11, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 amkr123118earningsrelease8.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 11, 2019 AMKOR TECHNOLOGY, INC. (Exact name of registrant as specified in its charter) DELAWARE 000-29472 23-1722724 (State or Other Jur

February 11, 2019 EX-99.1

Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2018

News Release Amkor Technology Reports Financial Results for the Fourth Quarter and Full Year 2018 Fourth Quarter 2018 Highlights: • Fourth quarter net sales $1,081 million • Net income $28 million, earnings per diluted share $0.

February 11, 2019 SC 13G/A

AMKR / Amkor Technology, Inc. / VANGUARD GROUP INC Passive Investment

amkortechnologyinc.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1 )* Name of issuer: Amkor Technology Inc Title of Class of Securities: Common Stock CUSIP Number: 031652100 Date of Event Which Requires Filing of this Statement: December 31, 2018 Check the appropriate

February 8, 2019 SC 13G/A

AMKR / Amkor Technology, Inc. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* AMKOR TECHNOLOGY INC (Name of Issuer) Common Stock (Title of Class of Securities) 031652100 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sc

November 9, 2018 SC 13D/A

AMKR / Amkor Technology, Inc. / KIM JAMES J - AMENDMENT NO. 13 TO SC 13D Activist Investment

Amendment No. 13 to SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 13)* AMKOR TECHNOLOGY, INC. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 031652100 (CUSIP Number) James J. Kim 2045 East Innovation Circle Tempe, Arizona 85284 Telephone: (480) 575-7253 (

November 9, 2018 EX-99.1

Thirteenth Amended and Restated Agreement regarding joint filing

EX-99.1 EXHIBIT 99.1 This Thirteenth Amended and Restated Agreement made by the undersigned persons certifies that each undersigned person agrees that the Schedule 13D/A, and all amendments thereto, to which this Exhibit 99.1 is attached, is filed on behalf of each of them and the Group. The “Group” (as defined in Rule 13d-5(b)) may be deemed to be composed of the following persons: • James J. Kim

November 2, 2018 10-Q

AMKR / Amkor Technology, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2018 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 000-29472 AMKOR TECHNOLOGY,

October 29, 2018 EX-99.1

Amkor Technology Reports Financial Results for the Third Quarter 2018

News Release Amkor Technology Reports Financial Results for the Third Quarter 2018 Third Quarter Highlights • Third quarter net sales $1,144 million, up 7% sequentially • Net Income $57 million, earnings per diluted share $0.

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