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(the \"Issuer\") in connection with the vesting of certain restricted stock units (\"RSUs\") granted to the Reporting Person on\nFebruary 24, 2022 (the \"Grant Date\") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax\nwithholding obligations. 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The RSUs were awarded\nfor no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the 2025 Grant Date and\nannually thereafter, such that 100% will be vested on the third anniversary of the 2025 Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents shares of the Issuer's common stock underlying time-vested restricted stock units granted on the 2025 Grant Date pursuant to the Issuer's Equity Incentive Plan. The RSUs were awarded\nfor no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the 2025 Grant Date and\nannually thereafter, such that 100% will be vested on the third anniversary of the 2025 Grant Date."}],"balance_after":17385,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":8690},"source":{"system":"sec-edgar","filing":"0001628280-26-011074","document":"wk-form4_1771967313.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026011074/wk-form4_1771967313.xml","form_type":"4"}},{"id":885742,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Stock Units","published_at":"2026-02-24T21:08:35.000Z","date":"2026-02-20","kind":"exercise","planned":false,"acquired":false,"shares":7422,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents shares of the Issuer's common stock underlying time-vested RSUs on the 2024 Grant Date pursuant to the Issuer's Equity Incentive Plan. The RSUs were awarded for no consideration\nother than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the 2024 Grant Date and annually thereafter, such\nthat 100% will be vested on the third anniversary of the 2024 Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents shares of the Issuer's common stock underlying time-vested RSUs on the 2024 Grant Date pursuant to the Issuer's Equity Incentive Plan. The RSUs were awarded for no consideration\nother than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the 2024 Grant Date and annually thereafter, such\nthat 100% will be vested on the third anniversary of the 2024 Grant Date."}],"balance_after":7424,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":7422},"source":{"system":"sec-edgar","filing":"0001628280-26-011074","document":"wk-form4_1771967313.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026011074/wk-form4_1771967313.xml","form_type":"4"}},{"id":885741,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2026-02-24T21:08:35.000Z","date":"2026-02-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":3724,"price":47.94,"value":178528.56,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The transaction represents shares withheld by the Issuer in connection with the vesting of certain RSUs granted to the Reporting Person on February 20, 2025 (the \"2025 Grant Date\") pursuant to the\nIssuer's 2021 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. 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(the \"Issuer\") in connection with the vesting of certain restricted stock units (\"RSUs\") granted to the Reporting Person on\nFebruary 20, 2024 (the \"2024 Grant Date\") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's\ntax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":32864,"source":{"system":"sec-edgar","filing":"0001628280-26-011074","document":"wk-form4_1771967313.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026011074/wk-form4_1771967313.xml","form_type":"4"}},{"id":885738,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2026-02-24T21:08:35.000Z","date":"2026-02-20","kind":"exercise","planned":false,"acquired":true,"shares":7422,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":36045,"source":{"system":"sec-edgar","filing":"0001628280-26-011074","document":"wk-form4_1771967313.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026011074/wk-form4_1771967313.xml","form_type":"4"}},{"id":891228,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Stock Units","published_at":"2026-02-20T21:15:37.000Z","date":"2026-02-18","kind":"grant","planned":false,"acquired":true,"shares":14976,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents shares of the Issuer's common stock underlying time-vested restricted stock units granted on February 18, 2026 (the \"Grant Date\") pursuant to the Issuer's Equity Incentive Plan (the\n\"RSUs\"). The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents shares of the Issuer's common stock underlying time-vested restricted stock units granted on February 18, 2026 (the \"Grant Date\") pursuant to the Issuer's Equity Incentive Plan (the\n\"RSUs\"). The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the Grant Date."}],"balance_after":14976,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":14976},"source":{"system":"sec-edgar","filing":"0001628280-26-010206","document":"wk-form4_1771622134.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026010206/wk-form4_1771622134.xml","form_type":"4"}},{"id":891227,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2026-02-20T21:15:37.000Z","date":"2026-02-18","kind":"tax_withholding","planned":false,"acquired":false,"shares":1918,"price":46.74,"value":89647.32,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The transaction represents shares of the Issuer's common stock withheld by the Issuer in connection with the vesting of PSUs to satisfy the Reporting Person's tax withholding obligations. The Issuer\nwill pay these taxes on behalf of the Reporting Person."}],"balance_after":28623,"source":{"system":"sec-edgar","filing":"0001628280-26-010206","document":"wk-form4_1771622134.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026010206/wk-form4_1771622134.xml","form_type":"4"}},{"id":891226,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2026-02-20T21:15:37.000Z","date":"2026-02-18","kind":"grant","planned":false,"acquired":true,"shares":4475,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The transaction represents the vesting on February 18, 2026 of 4,475 shares of common stock of the Issuer's underlying PSUs granted to the Reporting Person on February 20, 2025 pursuant to the\nIssuer's Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic earnings per share performance goal over a one-year performance period\nbeginning January 1, 2025 and ending on December 31, 2025."}],"balance_after":30541,"source":{"system":"sec-edgar","filing":"0001628280-26-010206","document":"wk-form4_1771622134.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026010206/wk-form4_1771622134.xml","form_type":"4"}},{"id":891225,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2026-02-20T21:15:37.000Z","date":"2026-02-18","kind":"tax_withholding","planned":false,"acquired":false,"shares":859,"price":46.74,"value":40149.66,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The transaction represents shares of the Issuer's common stock withheld by the Issuer in connection with the vesting of PSUs to satisfy the Reporting Person's tax withholding obligations. The Issuer\nwill pay these taxes on behalf of the Reporting Person."}],"balance_after":26066,"source":{"system":"sec-edgar","filing":"0001628280-26-010206","document":"wk-form4_1771622134.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026010206/wk-form4_1771622134.xml","form_type":"4"}},{"id":891224,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2026-02-20T21:15:37.000Z","date":"2026-02-18","kind":"grant","planned":false,"acquired":true,"shares":2003,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This Form 4 reports the vesting on February 18, 2026 of 2,003 shares of common stock of Amkor Technology, Inc. (the \"Issuer\") underlying performance-vested restricted stock units (\"PSUs\")\ngranted to the Reporting Person on February 20, 2024 pursuant to the Issuer's Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic\nearnings per share performance goal over a one-year performance period beginning January 1, 2025 and ending on December 31, 2025."}],"balance_after":26925,"source":{"system":"sec-edgar","filing":"0001628280-26-010206","document":"wk-form4_1771622134.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026010206/wk-form4_1771622134.xml","form_type":"4"}},{"id":897880,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Employee Stock Option 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(the \"Issuer\") in connection with the vesting of certain restricted stock units (\"RSUs\") granted to the Reporting Person on\nFebruary 16, 2023 (the \"Grant Date\") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax\nwithholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":24922,"source":{"system":"sec-edgar","filing":"0001628280-26-009033","document":"wk-form4_1771448939.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026009033/wk-form4_1771448939.xml","form_type":"4"}},{"id":897875,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2026-02-18T21:09:02.000Z","date":"2026-02-16","kind":"exercise","planned":true,"acquired":true,"shares":1856,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":25718,"source":{"system":"sec-edgar","filing":"0001628280-26-009033","document":"wk-form4_1771448939.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026009033/wk-form4_1771448939.xml","form_type":"4"}},{"id":935843,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2026-01-20T21:30:22.000Z","date":"2026-01-16","kind":"exercise","planned":true,"acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"This stock option (the \"Option\") to acquire 200,000 shares of Amkor Technology, Inc. common stock (the \"Option Shares\") was granted on June 10, 2019 (the \"Option Grant Date\") and vested over four years as\nfollows: (i) with respect to 25% of the Option Shares, on the first anniversary of the Option Grant Date; 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The shares were sold in multiple transactions at prices ranging from $42.15 to $43.65. The Reporting Person hereby undertakes to\nprovide, upon request, to the staff of the Securities and Exchange Commission, Amkor Technology, Inc. (the \"Issuer\"), or any security holder of the Issuer, full information regarding the number of\nshares sold at each separate price within the range set forth in this footnote (2) to this Form 4."}],"balance_after":23862,"source":{"system":"sec-edgar","filing":"0001628280-25-057626","document":"wk-form4_1766005596.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025057626/wk-form4_1766005596.xml","form_type":"4"}},{"id":965761,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2025-12-17T21:06:39.000Z","date":"2025-12-16","kind":"exercise","planned":true,"acquired":true,"shares":20000,"price":7.4,"value":148000.0,"ownership":{"direct":true},"balance_after":43862,"source":{"system":"sec-edgar","filing":"0001628280-25-057626","document":"wk-form4_1766005596.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025057626/wk-form4_1766005596.xml","form_type":"4"}},{"id":994366,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2025-11-19T21:37:17.000Z","date":"2025-11-17","kind":"exercise","planned":true,"acquired":false,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This stock option (the \"Option\") to acquire 200,000 shares of the Issuer's common stock (the \"Option Shares\") was granted on June 10, 2019 (the \"Option Grant Date\") and vested over four years\nas follows: (i) with respect to 25% of the Option Shares, on the first anniversary of the Option Grant Date; and (ii) with respect to the remainder of the Option Shares, in equal quarterly installments\nthereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date."}],"balance_after":130000,"derivative":{"exercise_price":7.4,"exercise_date":"2020-06-10","expiration_date":"2029-06-10","underlying":"Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001628280-25-053212","document":"wk-form4_1763588234.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025053212/wk-form4_1763588234.xml","form_type":"4"}},{"id":994365,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2025-11-19T21:37:17.000Z","date":"2025-11-17","kind":"sale","planned":true,"acquired":false,"shares":20000,"price":31.69,"value":633800.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 1, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $31.05 to $32.05. The Reporting Person hereby undertakes to\nprovide, upon request, to the staff of the Securities and Exchange Commission, Amkor Technology, Inc. (the \"Issuer\"), or any security holder of the Issuer, full information regarding the number of\nshares sold at each separate price within the range set forth in this footnote (2) to this Form 4."}],"balance_after":23862,"source":{"system":"sec-edgar","filing":"0001628280-25-053212","document":"wk-form4_1763588234.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025053212/wk-form4_1763588234.xml","form_type":"4"}},{"id":994364,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2025-11-19T21:37:17.000Z","date":"2025-11-17","kind":"exercise","planned":true,"acquired":true,"shares":20000,"price":7.4,"value":148000.0,"ownership":{"direct":true},"balance_after":43862,"source":{"system":"sec-edgar","filing":"0001628280-25-053212","document":"wk-form4_1763588234.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025053212/wk-form4_1763588234.xml","form_type":"4"}},{"id":1078548,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2025-07-31T21:51:01.000Z","date":"2025-07-31","kind":"sale","planned":false,"acquired":false,"shares":15000,"price":23.5818,"value":353727.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $23.56 to $23.62. The Reporting Person hereby undertakes to provide, upon request, to the\nstaff of the Securities and Exchange Commission, Amkor Technology, Inc. (the \"Issuer\"), or any security holder of the Issuer, full information regarding the number of shares sold at each separate price within the range set\nforth in this footnote (1) to this Form 4."}],"balance_after":23862,"source":{"system":"sec-edgar","filing":"0001047127-25-000170","document":"wk-form4_1753998658.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000170/wk-form4_1753998658.xml","form_type":"4"}},{"id":1243860,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Stock Units","published_at":"2025-02-26T21:31:00.000Z","date":"2025-02-24","kind":"exercise","planned":false,"acquired":false,"shares":1881,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"On the Grant Date, the Reporting Person was granted 7,523 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On the Grant Date, the Reporting Person was granted 7,523 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On the Grant Date, the Reporting Person was granted 7,523 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."}],"balance_after":1880,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":1881},"source":{"system":"sec-edgar","filing":"0001047127-25-000044","document":"wk-form4_1740605454.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000044/wk-form4_1740605454.xml","form_type":"4"}},{"id":1243859,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2025-02-26T21:31:00.000Z","date":"2025-02-24","kind":"tax_withholding","planned":false,"acquired":false,"shares":807,"price":21.95,"value":17713.65,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction represents shares withheld by Amkor Technology, Inc. (the \"Issuer\") in connection with the vesting of certain restricted stock units (\"RSUs\") granted to the Reporting Person on February 24, 2022 (the \"Grant Date\") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":38862,"source":{"system":"sec-edgar","filing":"0001047127-25-000044","document":"wk-form4_1740605454.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000044/wk-form4_1740605454.xml","form_type":"4"}},{"id":1243858,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2025-02-26T21:31:00.000Z","date":"2025-02-24","kind":"exercise","planned":false,"acquired":true,"shares":1881,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":39669,"source":{"system":"sec-edgar","filing":"0001047127-25-000044","document":"wk-form4_1740605454.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000044/wk-form4_1740605454.xml","form_type":"4"}},{"id":1253760,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Stock Units","published_at":"2025-02-21T21:35:18.000Z","date":"2025-02-20","kind":"grant","planned":false,"acquired":true,"shares":26075,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents shares of the Issuer's common stock underlying time-vested RSUs granted on February 20, 2025 (the \"2025 Grant Date\") pursuant to the Issuer's Equity Incentive Plan, as amended. The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the 2025 Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the 2025 Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents shares of the Issuer's common stock underlying time-vested RSUs granted on February 20, 2025 (the \"2025 Grant Date\") pursuant to the Issuer's Equity Incentive Plan, as amended. The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the 2025 Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the 2025 Grant Date."}],"balance_after":26075,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":26075},"source":{"system":"sec-edgar","filing":"0001047127-25-000032","document":"wk-form4_1740173710.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000032/wk-form4_1740173710.xml","form_type":"4"}},{"id":1253759,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Stock Units","published_at":"2025-02-21T21:35:18.000Z","date":"2025-02-20","kind":"exercise","planned":false,"acquired":false,"shares":7422,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On the 2024 Grant Date, the Reporting Person was granted 22,268 RSUs which vest in three equal annual installments beginning on the first anniversary of the 2024 Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On the 2024 Grant Date, the Reporting Person was granted 22,268 RSUs which vest in three equal annual installments beginning on the first anniversary of the 2024 Grant Date."}],"balance_after":14846,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":7422},"source":{"system":"sec-edgar","filing":"0001047127-25-000032","document":"wk-form4_1740173710.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000032/wk-form4_1740173710.xml","form_type":"4"}},{"id":1253758,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2025-02-21T21:35:18.000Z","date":"2025-02-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":3181,"price":23.01,"value":73194.81,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The transaction represents shares withheld by the Issuer in connection with the vesting of certain restricted stock units (\"RSUs\") granted to the Reporting Person on February 20, 2024 (the \"2024 Grant Date\") pursuant to the Issuer's Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. 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The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":33547,"source":{"system":"sec-edgar","filing":"0001047127-25-000032","document":"wk-form4_1740173710.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000032/wk-form4_1740173710.xml","form_type":"4"}},{"id":1253755,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2025-02-21T21:35:18.000Z","date":"2025-02-19","kind":"grant","planned":false,"acquired":true,"shares":3080,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This Form 4 reports the vesting on February 19, 2025 of 3,080 shares of common stock of Amkor Technology, Inc. (the \"Issuer\") underlying performance-vested restricted stock units (\"PSUs\") granted to the Reporting Person on February 20, 2024 pursuant to the Issuer's Equity Incentive Plan, as amended, and the related award agreement. 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(the \"Issuer\") in connection with the vesting of certain restricted stock units (\"RSUs\") granted to the Reporting Person on February 16, 2023 (the \"Grant Date\") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. 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The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":30000,"source":{"system":"sec-edgar","filing":"0001047127-24-000161","document":"wk-form4_1723753960.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000161/wk-form4_1723753960.xml","form_type":"4"}},{"id":1432797,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2024-08-15T20:32:46.000Z","date":"2024-08-13","kind":"grant","planned":false,"acquired":true,"shares":8260,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This Form 4 reports the vesting on August 13, 2024 of 8,260 shares of common stock of Amkor Technology, Inc. (the \"Issuer\") underlying performance-vested restricted stock units (\"PSUs\") granted to the Reporting Person on December 14, 2023 pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the related award agreement.  The PSUs vested based on the achievement of either of two internal performance goals related to geographic expansion of the Issuer's manufacturing footprint and expanding the Issuer's advanced packaging capacity in support of end markets with high growth potential."}],"balance_after":33540,"source":{"system":"sec-edgar","filing":"0001047127-24-000161","document":"wk-form4_1723753960.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000161/wk-form4_1723753960.xml","form_type":"4"}},{"id":1528976,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2024-05-03T22:51:41.000Z","date":"2024-05-02","kind":"sale","planned":false,"acquired":false,"shares":5000,"price":31.3,"value":156500.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $31.30 to $31.31. The Reporting Person hereby undertakes to provide, upon request, to the staff of the Securities and Exchange Commission, Amkor Technology, Inc. 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The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents shares of the Issuer's common stock underlying time-vested restricted stock units granted on February 20, 2024 (the \"Grant Date\") pursuant to the Issuer's Equity Incentive Plan (the \"RSUs\"). The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the Grant Date."}],"balance_after":22268,"derivative":{"underlying":"Common Stock","underlying_shares":22268},"source":{"system":"sec-edgar","filing":"0001047127-24-000038","document":"wk-form4_1708641600.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000038/wk-form4_1708641600.xml","form_type":"4"}},{"id":1626074,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2024-02-22T22:40:22.000Z","date":"2024-02-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":4930,"price":29.75,"value":146667.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The transaction represents shares of the Issuer's common stock withheld by the Issuer in connection with the vesting of PSUs to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":29206,"source":{"system":"sec-edgar","filing":"0001047127-24-000038","document":"wk-form4_1708641600.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000038/wk-form4_1708641600.xml","form_type":"4"}},{"id":1626073,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2024-02-22T22:40:22.000Z","date":"2024-02-20","kind":"grant","planned":false,"acquired":true,"shares":11510,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This Form 4 reports the vesting on February 20, 2024 of 11,510 shares of common stock of Amkor Technology, Inc. (the \"Issuer\") underlying performance-vested restricted stock units (\"PSUs\") granted to the Reporting Person on February 24, 2022 pursuant to the Issuer's Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic cumulative earnings per share performance goal over a two-year performance period beginning January 1, 2022 and ending on December 31, 2023."}],"balance_after":34136,"source":{"system":"sec-edgar","filing":"0001047127-24-000038","document":"wk-form4_1708641600.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000038/wk-form4_1708641600.xml","form_type":"4"}},{"id":1630193,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Stock Units","published_at":"2024-02-21T22:15:50.000Z","date":"2024-02-16","kind":"exercise","planned":false,"acquired":false,"shares":1856,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On the Grant Date, the Reporting Person was granted 7,423 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On the Grant Date, the Reporting Person was granted 7,423 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."}],"balance_after":5567,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":1856},"source":{"system":"sec-edgar","filing":"0001047127-24-000028","document":"wk-form4_1708553730.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000028/wk-form4_1708553730.xml","form_type":"4"}},{"id":1630192,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2024-02-21T22:15:50.000Z","date":"2024-02-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":892,"price":30.01,"value":26768.92,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction represents shares withheld by Amkor Technology, Inc. (the \"Issuer\") in connection with the vesting of certain restricted stock units (\"RSUs\") granted to the Reporting Person on February 16, 2023 (the \"Grant Date\") pursuant to the Issuer's  2021 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":22626,"source":{"system":"sec-edgar","filing":"0001047127-24-000028","document":"wk-form4_1708553730.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000028/wk-form4_1708553730.xml","form_type":"4"}},{"id":1630191,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2024-02-21T22:15:50.000Z","date":"2024-02-16","kind":"exercise","planned":false,"acquired":true,"shares":1856,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":23518,"source":{"system":"sec-edgar","filing":"0001047127-24-000028","document":"wk-form4_1708553730.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000028/wk-form4_1708553730.xml","form_type":"4"}},{"id":1646943,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Stock Units","published_at":"2024-02-13T22:16:21.000Z","date":"2024-02-09","kind":"exercise","planned":false,"acquired":false,"shares":1634,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On the Grant Date, the Reporting Person was granted 6,536 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On the Grant Date, the Reporting Person was granted 6,536 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."}],"balance_after":1634,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":1634},"source":{"system":"sec-edgar","filing":"0001047127-24-000013","document":"wk-form4_1707862567.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000013/wk-form4_1707862567.xml","form_type":"4"}},{"id":1646942,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2024-02-13T22:16:21.000Z","date":"2024-02-09","kind":"tax_withholding","planned":false,"acquired":false,"shares":787,"price":31.2,"value":24554.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction represents shares withheld by Amkor Technology, Inc. (the \"Issuer\") in connection with the vesting of certain restricted stock units (\"RSUs\") granted to the Reporting Person on February 11, 2021 (the \"Grant Date\") pursuant to the Issuer's Second Amended and Restated 2007 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":21662,"source":{"system":"sec-edgar","filing":"0001047127-24-000013","document":"wk-form4_1707862567.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000013/wk-form4_1707862567.xml","form_type":"4"}},{"id":1646941,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2024-02-13T22:16:21.000Z","date":"2024-02-09","kind":"exercise","planned":false,"acquired":true,"shares":1634,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":22449,"source":{"system":"sec-edgar","filing":"0001047127-24-000013","document":"wk-form4_1707862567.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000013/wk-form4_1707862567.xml","form_type":"4"}},{"id":1750177,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2023-11-03T22:45:21.000Z","date":"2023-11-03","kind":"sale","planned":false,"acquired":false,"shares":5000,"price":23.84,"value":119200.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $23.83 to $23.86."}],"balance_after":20815,"source":{"system":"sec-edgar","filing":"0001209191-23-054413","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123054413/doc4.xml","form_type":"4"}},{"id":1993922,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Stock Units","published_at":"2023-02-25T00:43:40.000Z","date":"2023-02-24","kind":"exercise","acquired":false,"shares":1881,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"On February 24, 2022 (the \"RSU Grant Date\"), the Reporting Person was granted 7,523 time-vested restricted stock units (\"RSUs\") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the applicable award agreement. The RSUs convert into shares of the Issuer's common stock on a one-to-one basis and vest in four equal annual installments beginning on the first anniversary of the RSU Grant Date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On February 24, 2022 (the \"RSU Grant Date\"), the Reporting Person was granted 7,523 time-vested restricted stock units (\"RSUs\") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the applicable award agreement. The RSUs convert into shares of the Issuer's common stock on a one-to-one basis and vest in four equal annual installments beginning on the first anniversary of the RSU Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On February 24, 2022 (the \"RSU Grant Date\"), the Reporting Person was granted 7,523 time-vested restricted stock units (\"RSUs\") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the applicable award agreement. The RSUs convert into shares of the Issuer's common stock on a one-to-one basis and vest in four equal annual installments beginning on the first anniversary of the RSU Grant Date."}],"balance_after":5642,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":1881},"source":{"system":"sec-edgar","filing":"0001209191-23-012944","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123012944/doc4.xml","form_type":"4"}},{"id":1993921,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2023-02-25T00:43:40.000Z","date":"2023-02-24","kind":"tax_withholding","acquired":false,"shares":807,"price":25.27,"value":20392.89,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"The transaction represents shares withheld by the Issuer in connection with the vesting of certain RSUs granted to the Reporting Person on the RSU Grant Date. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":25815,"source":{"system":"sec-edgar","filing":"0001209191-23-012944","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123012944/doc4.xml","form_type":"4"}},{"id":1993920,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2023-02-25T00:43:40.000Z","date":"2023-02-24","kind":"exercise","acquired":true,"shares":1881,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On February 24, 2022 (the \"RSU Grant Date\"), the Reporting Person was granted 7,523 time-vested restricted stock units (\"RSUs\") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the applicable award agreement. The RSUs convert into shares of the Issuer's common stock on a one-to-one basis and vest in four equal annual installments beginning on the first anniversary of the RSU Grant Date."}],"balance_after":26622,"source":{"system":"sec-edgar","filing":"0001209191-23-012944","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123012944/doc4.xml","form_type":"4"}},{"id":1993919,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2023-02-25T00:43:40.000Z","date":"2023-02-22","kind":"tax_withholding","acquired":false,"shares":15343,"price":25.46,"value":390632.78,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The transaction represents shares of the Issuer's common stock withheld by the Issuer in connection with the vesting of PSUs to satisfy the Reporting Person's tax withholding obligations.  The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":24741,"source":{"system":"sec-edgar","filing":"0001209191-23-012944","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123012944/doc4.xml","form_type":"4"}},{"id":1993918,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2023-02-25T00:43:40.000Z","date":"2023-02-22","kind":"grant","acquired":true,"shares":35686,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This Form 4 reports the vesting on February 22, 2023 of 35,686 shares of common stock of Amkor Technology, Inc. (the \"Issuer\") underlying performance-vested restricted stock units (\"PSUs\") granted to the Reporting Person on February 11, 2021 pursuant to the Issuer's Second Amended and Restated 2007 Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic cumulative earnings per share performance goal over a two-year performance period beginning January 1, 2021 and ending on December 31, 2022."}],"balance_after":40084,"source":{"system":"sec-edgar","filing":"0001209191-23-012944","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123012944/doc4.xml","form_type":"4"}},{"id":2004349,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Stock Units","published_at":"2023-02-21T22:32:04.000Z","date":"2023-02-16","kind":"grant","acquired":true,"shares":7423,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents shares of Amkor Technology, Inc. (the \"Issuer\") common stock underlying time-vested restricted stock units granted on February 16, 2023 (the \"Grant Date\") pursuant to the Issuer's Equity Incentive Plan (the \"RSUs\"). The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in four equal annual installments beginning on the first anniversary of the Grant Date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents shares of Amkor Technology, Inc. (the \"Issuer\") common stock underlying time-vested restricted stock units granted on February 16, 2023 (the \"Grant Date\") pursuant to the Issuer's Equity Incentive Plan (the \"RSUs\"). The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in four equal annual installments beginning on the first anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents shares of Amkor Technology, Inc. (the \"Issuer\") common stock underlying time-vested restricted stock units granted on February 16, 2023 (the \"Grant Date\") pursuant to the Issuer's Equity Incentive Plan (the \"RSUs\"). The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in four equal annual installments beginning on the first anniversary of the Grant Date."}],"balance_after":7423,"derivative":{"underlying":"Common Stock","underlying_shares":7423},"source":{"system":"sec-edgar","filing":"0001209191-23-011314","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123011314/doc4.xml","form_type":"4"}},{"id":2017304,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Restricted Stock Units","published_at":"2023-02-15T00:57:16.000Z","date":"2023-02-10","kind":"exercise","acquired":false,"shares":1634,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"As previously reported in a Form 4 filed by the Reporting Person on February 18, 2021 (the \"Original 2021 Form 4\"), on February 11, 2021 (the \"2021 Grant Date\"), 6,536 shares of Amkor Technology, Inc. (the \"Issuer\") common stock underlying time-vested restricted stock units (the \"2021 RSUs\") were granted to the Reporting Person. The 2021 RSUs vest in four equal annual installments beginning on the first anniversary of the 2021 Grant Date.  In the Original 2021 Form 4 and in subsequent Form 4s filed by the Reporting Person, the 2021 RSUs were incorrectly reported in Table I.  Table II, Column 9 of this Form 4 has been adjusted to include the 2021 RSUs and reflects the proper number of 2021 RSUs beneficially owned by the Reporting Person as of the filing date of this Form 4."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"As previously reported in a Form 4 filed by the Reporting Person on February 18, 2021 (the \"Original 2021 Form 4\"), on February 11, 2021 (the \"2021 Grant Date\"), 6,536 shares of Amkor Technology, Inc. (the \"Issuer\") common stock underlying time-vested restricted stock units (the \"2021 RSUs\") were granted to the Reporting Person. The 2021 RSUs vest in four equal annual installments beginning on the first anniversary of the 2021 Grant Date.  In the Original 2021 Form 4 and in subsequent Form 4s filed by the Reporting Person, the 2021 RSUs were incorrectly reported in Table I.  Table II, Column 9 of this Form 4 has been adjusted to include the 2021 RSUs and reflects the proper number of 2021 RSUs beneficially owned by the Reporting Person as of the filing date of this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"As previously reported in a Form 4 filed by the Reporting Person on February 18, 2021 (the \"Original 2021 Form 4\"), on February 11, 2021 (the \"2021 Grant Date\"), 6,536 shares of Amkor Technology, Inc. (the \"Issuer\") common stock underlying time-vested restricted stock units (the \"2021 RSUs\") were granted to the Reporting Person. The 2021 RSUs vest in four equal annual installments beginning on the first anniversary of the 2021 Grant Date.  In the Original 2021 Form 4 and in subsequent Form 4s filed by the Reporting Person, the 2021 RSUs were incorrectly reported in Table I.  Table II, Column 9 of this Form 4 has been adjusted to include the 2021 RSUs and reflects the proper number of 2021 RSUs beneficially owned by the Reporting Person as of the filing date of this Form 4."}],"balance_after":3268,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":1634},"source":{"system":"sec-edgar","filing":"0001209191-23-009533","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123009533/doc4.xml","form_type":"4"}},{"id":2017303,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2023-02-15T00:57:16.000Z","date":"2023-02-10","kind":"tax_withholding","acquired":false,"shares":787,"price":27.6,"value":21721.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The transaction represents shares withheld by the Issuer in connection with the vesting of certain of the 2021 RSUs. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":4398,"source":{"system":"sec-edgar","filing":"0001209191-23-009533","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123009533/doc4.xml","form_type":"4"}},{"id":2017302,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2023-02-15T00:57:16.000Z","date":"2023-02-10","kind":"exercise","acquired":true,"shares":1634,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"As previously reported in a Form 4 filed by the Reporting Person on February 18, 2021 (the \"Original 2021 Form 4\"), on February 11, 2021 (the \"2021 Grant Date\"), 6,536 shares of Amkor Technology, Inc. (the \"Issuer\") common stock underlying time-vested restricted stock units (the \"2021 RSUs\") were granted to the Reporting Person. The 2021 RSUs vest in four equal annual installments beginning on the first anniversary of the 2021 Grant Date.  In the Original 2021 Form 4 and in subsequent Form 4s filed by the Reporting Person, the 2021 RSUs were incorrectly reported in Table I.  Table II, Column 9 of this Form 4 has been adjusted to include the 2021 RSUs and reflects the proper number of 2021 RSUs beneficially owned by the Reporting Person as of the filing date of this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"As previously reported in a Form 4 filed by the Reporting Person on February 25, 2022 (the \"Original 2022 Form 4\"), on February 24, 2022 (the \"2022 Grant Date\") shares of the Issuer's common stock underlying time-vested restricted stock units (the \"2022 RSUs\") were granted to the Reporting Person.  The 2022 RSUs vest in four equal annual installments beginning on the first anniversary of the 2022 Grant Date. In the Original 2022 Form 4, the 2022 RSUs were incorrectly reported in Table I. Table II, Column 9 of this Form 4 has been adjusted to include the 2022 RSUs and reflects the proper number of 2022 RSUs beneficially owned by the Reporting Person as of the filing date of this Form 4."}],"balance_after":5185,"source":{"system":"sec-edgar","filing":"0001209191-23-009533","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123009533/doc4.xml","form_type":"4"}},{"id":2372740,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2022-02-25T22:42:07.000Z","date":"2022-02-24","kind":"grant","acquired":true,"shares":7523,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of Amkor Technology, Inc. (the \"Issuer\") common stock underlying time-vested restricted stock units granted on February 24, 2022 (the \"Grant Date\") pursuant to the Issuer's Equity Incentive Plan (the \"RSUs\"). The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in four equal annual installments beginning on the first anniversary of the Grant Date."}],"balance_after":15976,"source":{"system":"sec-edgar","filing":"0001209191-22-013276","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919122013276/doc4.xml","form_type":"4"}},{"id":2395046,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2022-02-15T22:23:01.000Z","date":"2022-02-11","kind":"tax_withholding","acquired":false,"shares":583,"price":20.9,"value":12184.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The transaction represents shares withheld by Amkor Technology, Inc. (the \"Issuer\") in connection with the vesting of certain restricted stock units granted to the Reporting Person on February 11, 2021 pursuant to the Issuer's Equity Incentive Plan and the related award agreement.  These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":8453,"source":{"system":"sec-edgar","filing":"0001209191-22-009844","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919122009844/doc4.xml","form_type":"4"}},{"id":2851348,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2021-02-18T23:03:16.000Z","date":"2021-02-11","kind":"grant","acquired":true,"shares":6536,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These are Time-Vested Restricted Stock Units which were granted on February 11, 2021 and vest in four equal annual installments; 25% on each anniversary of the grant date."}],"balance_after":9036,"source":{"system":"sec-edgar","filing":"0001209191-21-012045","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919121012045/doc4.xml","form_type":"4"}},{"id":2860021,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2021-02-16T21:36:40.000Z","date":"2021-02-12","kind":"exercise","acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"This stock option was granted on June 10, 2019 and vests as follows: 25% of the shares vest on the first anniversary of the grant date and 1/16 of the option vests each quarter thereafter, such that 100% of the option will vest on the fourth anniversary of the grant date."}],"balance_after":150000,"derivative":{"exercise_price":7.4,"exercise_date":"2020-06-10","expiration_date":"2029-06-10","underlying":"Common Stock","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0001209191-21-010758","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919121010758/doc4.xml","form_type":"4"}},{"id":2860020,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2021-02-16T21:36:40.000Z","date":"2021-02-12","kind":"sale","acquired":false,"shares":50000,"price":25.34,"value":1267000.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average. Shares sold in multiple transactions at prices from $25.10 to $25.53."}],"balance_after":2500,"source":{"system":"sec-edgar","filing":"0001209191-21-010758","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919121010758/doc4.xml","form_type":"4"}},{"id":2860019,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2021-02-16T21:36:40.000Z","date":"2021-02-12","kind":"exercise","acquired":true,"shares":50000,"price":7.4,"value":370000.0,"ownership":{"direct":true},"balance_after":52500,"source":{"system":"sec-edgar","filing":"0001209191-21-010758","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919121010758/doc4.xml","form_type":"4"}},{"id":3220974,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Stock","published_at":"2020-03-09T20:49:51.000Z","date":"2020-03-09","kind":"purchase","acquired":true,"shares":2500,"price":9.14,"value":22850.0,"ownership":{"direct":true},"balance_after":2500,"source":{"system":"sec-edgar","filing":"0001209191-20-017309","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919120017309/doc4.xml","form_type":"4"}},{"id":3496108,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":21793,"kind":"person","name":"ROGERS MARK N","position":1,"cik":"0001201997","reported_name":"ROGERS MARK N","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2019-06-10T22:55:26.000Z","date":"2019-06-10","kind":"grant","acquired":true,"shares":200000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This option grant vests as follows: 25% of the shares vest on the first anniversary of the grant date and 1/16th of the option vests each quarter thereafter, such that 100% of the option will vest on the fourth anniversary of the grant date."}],"balance_after":200000,"derivative":{"exercise_price":7.4,"exercise_date":"2020-06-10","expiration_date":"2029-06-10","underlying":"Amkor Technology, Inc., Common Stock","underlying_shares":200000},"source":{"system":"sec-edgar","filing":"0001209191-19-035985","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919119035985/doc4.xml","form_type":"4"}}]}