{"transactions":[{"id":4626228,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-09-24T20:40:16.000Z","date":"2026-09-22","kind":"grant","planned":false,"acquired":true,"shares":3.9978,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on September 22, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on September 22, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on September 22, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":2619.5144,"derivative":{"underlying":"Common Stock","underlying_shares":3.9978},"source":{"system":"sec-edgar","filing":"0001628280-26-063422","document":"wk-form4_1790282412.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1730724/000162828026063422/wk-form4_1790282412.xml","form_type":"4"}},{"id":4626227,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-09-24T20:40:16.000Z","date":"2026-09-22","kind":"grant","planned":false,"acquired":true,"shares":12.9709,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on September 22 2026 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the\n\"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on September 22 2026 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the\n\"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on September 22 2026 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the\n\"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8916.9241,"derivative":{"underlying":"Common Stock","underlying_shares":12.9709},"source":{"system":"sec-edgar","filing":"0001628280-26-063422","document":"wk-form4_1790282412.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1730724/000162828026063422/wk-form4_1790282412.xml","form_type":"4"}},{"id":726867,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-25T20:42:18.000Z","date":"2026-06-23","kind":"grant","planned":false,"acquired":true,"shares":2.5166,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on June 23, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on June 23, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on June 23, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":2615.5166,"derivative":{"underlying":"Common Stock","underlying_shares":2.5166},"source":{"system":"sec-edgar","filing":"0001628280-26-045560","document":"wk-form4_1782420135.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026045560/wk-form4_1782420135.xml","form_type":"4"}},{"id":726866,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-25T20:42:18.000Z","date":"2026-06-23","kind":"grant","planned":false,"acquired":true,"shares":8.1651,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on June 23 2026 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the\n\"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on June 23 2026 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the\n\"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on June 23 2026 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the\n\"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8903.9532,"derivative":{"underlying":"Common Stock","underlying_shares":8.1651},"source":{"system":"sec-edgar","filing":"0001628280-26-045560","document":"wk-form4_1782420135.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026045560/wk-form4_1782420135.xml","form_type":"4"}},{"id":777607,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-15T20:41:31.000Z","date":"2026-05-13","kind":"grant","planned":false,"acquired":true,"shares":2613,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents shares of common stock underlying RSUs granted on May 13, 2026 (the \"Grant Date\") pursuant to the Plan (the \"2026 RSUs\"). Subject to the terms and conditions of the applicable award agreement, the 2026\nRSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders\nimmediately following the Grant Date. The 2026 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents shares of common stock underlying RSUs granted on May 13, 2026 (the \"Grant Date\") pursuant to the Plan (the \"2026 RSUs\"). Subject to the terms and conditions of the applicable award agreement, the 2026\nRSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders\nimmediately following the Grant Date. The 2026 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents shares of common stock underlying RSUs granted on May 13, 2026 (the \"Grant Date\") pursuant to the Plan (the \"2026 RSUs\"). Subject to the terms and conditions of the applicable award agreement, the 2026\nRSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders\nimmediately following the Grant Date. The 2026 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer."}],"balance_after":2613,"derivative":{"underlying":"Common Stock","underlying_shares":2613},"source":{"system":"sec-edgar","filing":"0001628280-26-035676","document":"wk-form4_1778877688.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026035676/wk-form4_1778877688.xml","form_type":"4"}},{"id":777606,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-15T20:41:31.000Z","date":"2026-05-13","kind":"exercise","planned":false,"acquired":false,"shares":9893.0573,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the\napplicable award agreement (the \"2025 RSUs\"). In connection with the vesting of the 2025 RSUs on May 13, 2026: (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU\nrepresenting an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, converted into\ncommon stock of the Issuer on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the\napplicable award agreement (the \"2025 RSUs\"). In connection with the vesting of the 2025 RSUs on May 13, 2026: (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU\nrepresenting an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, converted into\ncommon stock of the Issuer on a one-for-one basis."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the\napplicable award agreement (the \"2025 RSUs\"). In connection with the vesting of the 2025 RSUs on May 13, 2026: (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU\nrepresenting an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, converted into\ncommon stock of the Issuer on a one-for-one basis."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":9893.0573},"source":{"system":"sec-edgar","filing":"0001628280-26-035676","document":"wk-form4_1778877688.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026035676/wk-form4_1778877688.xml","form_type":"4"}},{"id":777605,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-15T20:41:31.000Z","date":"2026-05-13","kind":"exercise","planned":false,"acquired":true,"shares":9893,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the\napplicable award agreement (the \"2025 RSUs\"). In connection with the vesting of the 2025 RSUs on May 13, 2026: (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU\nrepresenting an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, converted into\ncommon stock of the Issuer on a one-for-one basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the\napplicable award agreement (the \"2025 RSUs\"). In connection with the vesting of the 2025 RSUs on May 13, 2026: (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU\nrepresenting an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, converted into\ncommon stock of the Issuer on a one-for-one basis."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the\napplicable award agreement (the \"2025 RSUs\"). In connection with the vesting of the 2025 RSUs on May 13, 2026: (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU\nrepresenting an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, converted into\ncommon stock of the Issuer on a one-for-one basis."}],"balance_after":65811,"source":{"system":"sec-edgar","filing":"0001628280-26-035676","document":"wk-form4_1778877688.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026035676/wk-form4_1778877688.xml","form_type":"4"}},{"id":820841,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-04-02T22:56:49.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":18.1563,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on March 31, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an\nadditional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on March 31, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an\nadditional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on March 31, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an\nadditional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":9893.0573,"derivative":{"underlying":"Common Stock","underlying_shares":18.1563},"source":{"system":"sec-edgar","filing":"0001628280-26-023395","document":"wk-form4_1775170606.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026023395/wk-form4_1775170606.xml","form_type":"4"}},{"id":820840,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-04-02T22:56:49.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":15.7246,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on March 31, 2026 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc.\n(the \"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on March 31, 2026 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc.\n(the \"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on March 31, 2026 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc.\n(the \"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8895.7881,"derivative":{"underlying":"Common Stock","underlying_shares":15.7246},"source":{"system":"sec-edgar","filing":"0001628280-26-023395","document":"wk-form4_1775170606.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026023395/wk-form4_1775170606.xml","form_type":"4"}},{"id":958693,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-12-29T13:24:53.000Z","date":"2025-12-23","kind":"grant","planned":false,"acquired":true,"shares":20.0093,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on December 23, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on December 23, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on December 23, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":9874.901,"derivative":{"underlying":"Common Stock","underlying_shares":20.0093},"source":{"system":"sec-edgar","filing":"0001628280-25-058866","document":"wk-form4_1767014690.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025058866/wk-form4_1767014690.xml","form_type":"4"}},{"id":958692,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-12-29T13:24:53.000Z","date":"2025-12-23","kind":"grant","planned":false,"acquired":true,"shares":17.3294,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on December 23, 2025 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc.\n(the \"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on December 23, 2025 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc.\n(the \"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on December 23, 2025 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc.\n(the \"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8880.0635,"derivative":{"underlying":"Common Stock","underlying_shares":17.3294},"source":{"system":"sec-edgar","filing":"0001628280-25-058866","document":"wk-form4_1767014690.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025058866/wk-form4_1767014690.xml","form_type":"4"}},{"id":968087,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Director Stock Option (Right-to-Buy)","published_at":"2025-12-16T21:26:52.000Z","date":"2025-12-12","kind":"exercise","planned":false,"acquired":false,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"This stock option to acquire 20,000 shares of the Issuer's Common Stock was granted on May 18, 2021 and vested in full on May 17, 2022."}],"balance_after":0,"derivative":{"exercise_price":19.39,"exercise_date":"2022-05-17","expiration_date":"2031-05-18","underlying":"Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001628280-25-057398","document":"wk-form4_1765920410.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025057398/wk-form4_1765920410.xml","form_type":"4"}},{"id":968086,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-12-16T21:26:52.000Z","date":"2025-12-12","kind":"sale","planned":false,"acquired":false,"shares":20000,"price":46.02,"value":920400.0,"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 $45.98 to $46.09. The Reporting Person hereby undertakes to provide, 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 shares sold at each separate price within the range set forth in this footnote (1) to this Form 4."}],"balance_after":55918,"source":{"system":"sec-edgar","filing":"0001628280-25-057398","document":"wk-form4_1765920410.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025057398/wk-form4_1765920410.xml","form_type":"4"}},{"id":968085,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-12-16T21:26:52.000Z","date":"2025-12-12","kind":"exercise","planned":false,"acquired":true,"shares":20000,"price":19.39,"value":387800.0,"ownership":{"direct":true},"balance_after":75918,"source":{"system":"sec-edgar","filing":"0001628280-25-057398","document":"wk-form4_1765920410.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025057398/wk-form4_1765920410.xml","form_type":"4"}},{"id":1032500,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-09-25T20:35:02.000Z","date":"2025-09-23","kind":"grant","planned":false,"acquired":true,"shares":27.3648,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on September 23, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on September 23, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on September 23, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":9854.8917,"derivative":{"underlying":"Common Stock","underlying_shares":27.3648},"source":{"system":"sec-edgar","filing":"0001628280-25-042813","document":"wk-form4_1758832499.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025042813/wk-form4_1758832499.xml","form_type":"4"}},{"id":1032499,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-09-25T20:35:02.000Z","date":"2025-09-23","kind":"grant","planned":false,"acquired":true,"shares":23.7001,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on September 23, 2025 with respect to time-vested restricted stock units (\"RSUs\") of the Issuer granted to the\nReporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on September 23, 2025 with respect to time-vested restricted stock units (\"RSUs\") of the Issuer granted to the\nReporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on September 23, 2025 with respect to time-vested restricted stock units (\"RSUs\") of the Issuer granted to the\nReporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8862.7341,"derivative":{"underlying":"Common Stock","underlying_shares":23.7001},"source":{"system":"sec-edgar","filing":"0001628280-25-042813","document":"wk-form4_1758832499.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828025042813/wk-form4_1758832499.xml","form_type":"4"}},{"id":1100547,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-06-27T21:47:24.000Z","date":"2025-06-25","kind":"grant","planned":false,"acquired":true,"shares":38.5269,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on June 25, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on June 25, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on June 25, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional\nRSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":9827.5269,"derivative":{"underlying":"Common Stock","underlying_shares":38.5269},"source":{"system":"sec-edgar","filing":"0001047127-25-000138","document":"wk-form4_1751060837.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000138/wk-form4_1751060837.xml","form_type":"4"}},{"id":1100546,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-06-27T21:47:24.000Z","date":"2025-06-25","kind":"grant","planned":false,"acquired":true,"shares":33.3674,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on June 25, 2025 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the\n\"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on June 25, 2025 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the\n\"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued upon the payment of a dividend on June 25, 2025 with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the\n\"Issuer\") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8839.034,"derivative":{"underlying":"Common Stock","underlying_shares":33.3674},"source":{"system":"sec-edgar","filing":"0001047127-25-000138","document":"wk-form4_1751060837.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000138/wk-form4_1751060837.xml","form_type":"4"}},{"id":1145966,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-05-16T20:41:20.000Z","date":"2025-05-15","kind":"grant","planned":false,"acquired":true,"shares":9789,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents shares of common stock underlying RSUs granted on May 15, 2025 (the \"Grant Date\") pursuant to the Plan (the \"2025 RSUs\"). Subject to the terms and conditions of the applicable award agreement, the 2025 RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The 2025 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents shares of common stock underlying RSUs granted on May 15, 2025 (the \"Grant Date\") pursuant to the Plan (the \"2025 RSUs\"). Subject to the terms and conditions of the applicable award agreement, the 2025 RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The 2025 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents shares of common stock underlying RSUs granted on May 15, 2025 (the \"Grant Date\") pursuant to the Plan (the \"2025 RSUs\"). Subject to the terms and conditions of the applicable award agreement, the 2025 RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The 2025 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer."}],"balance_after":9789,"derivative":{"underlying":"Common Stock","underlying_shares":9789},"source":{"system":"sec-edgar","filing":"0001047127-25-000110","document":"wk-form4_1747428074.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000110/wk-form4_1747428074.xml","form_type":"4"}},{"id":1145965,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-05-16T20:41:20.000Z","date":"2025-05-14","kind":"exercise","planned":false,"acquired":false,"shares":6017.0342,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2024 RSUs\"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"shares","element":"transactionShares","label":"F1","text":"On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2024 RSUs\"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2024 RSUs\"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2024 RSUs\"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2024 RSUs\"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":6017.0342},"source":{"system":"sec-edgar","filing":"0001047127-25-000110","document":"wk-form4_1747428074.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000110/wk-form4_1747428074.xml","form_type":"4"}},{"id":1145964,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-05-16T20:41:20.000Z","date":"2025-05-14","kind":"exercise","planned":false,"acquired":true,"shares":6017,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2024 RSUs\"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2024 RSUs\"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2024 RSUs\"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis."}],"balance_after":55918,"source":{"system":"sec-edgar","filing":"0001047127-25-000110","document":"wk-form4_1747428074.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712725000110/wk-form4_1747428074.xml","form_type":"4"}},{"id":1177892,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-04-04T20:13:24.000Z","date":"2025-04-02","kind":"grant","planned":false,"acquired":true,"shares":25.9877,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on April 2, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an\nadditional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on April 2, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an\nadditional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents DEUs accrued upon the payment of a dividend on April 2, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. 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(the \"Issuer\") upon the Issuer's payment of a dividend on September 25, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on September 25, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on September 25, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on September 25, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on September 25, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8530.5206,"derivative":{"underlying":"Common Stock","underlying_shares":28.3988},"source":{"system":"sec-edgar","filing":"0001209191-23-050671","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123050671/doc4.xml","form_type":"4"}},{"id":1842910,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2023-06-28T22:39:58.000Z","date":"2023-06-26","kind":"grant","planned":false,"acquired":true,"shares":24.1218,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on June 26, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on June 26, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on June 26, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on June 26, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on June 26, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8502.1218,"derivative":{"underlying":"Common Stock","underlying_shares":24.1218},"source":{"system":"sec-edgar","filing":"0001209191-23-040086","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123040086/doc4.xml","form_type":"4"}},{"id":1887278,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2023-05-19T00:10:04.000Z","date":"2023-05-16","kind":"grant","planned":false,"acquired":true,"shares":8478,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents shares of common stock underlying RSUs granted on May 16, 2023 (the \"Grant Date\") pursuant to the Plan. Subject to the terms and conditions of the applicable award agreement, the RSUs: (i) may be converted into common stock of the Issuer on a one-for-one basis; (ii) will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date; and (iii) will be settled on the sixth anniversary of the Grant Date in accordance with the terms of an irrevocable deferral agreement and distribution election made pursuant to the Plan. The RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents shares of common stock underlying RSUs granted on May 16, 2023 (the \"Grant Date\") pursuant to the Plan. Subject to the terms and conditions of the applicable award agreement, the RSUs: (i) may be converted into common stock of the Issuer on a one-for-one basis; (ii) will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date; and (iii) will be settled on the sixth anniversary of the Grant Date in accordance with the terms of an irrevocable deferral agreement and distribution election made pursuant to the Plan. The RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents shares of common stock underlying RSUs granted on May 16, 2023 (the \"Grant Date\") pursuant to the Plan. Subject to the terms and conditions of the applicable award agreement, the RSUs: (i) may be converted into common stock of the Issuer on a one-for-one basis; (ii) will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date; and (iii) will be settled on the sixth anniversary of the Grant Date in accordance with the terms of an irrevocable deferral agreement and distribution election made pursuant to the Plan. The RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer."}],"balance_after":8478,"derivative":{"underlying":"Common Stock","underlying_shares":8478},"source":{"system":"sec-edgar","filing":"0001209191-23-030840","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123030840/doc4.xml","form_type":"4"}},{"id":1887277,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2023-05-19T00:10:04.000Z","date":"2023-05-16","kind":"exercise","planned":false,"acquired":false,"shares":8809.4075,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"On May 17, 2022, the Reporting Person was granted 8,706 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2022 RSUs\").  In connection with the vesting of the 2022 RSUs on May 16, 2023: (i) 0.4075 of the 2022 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2022 RSUs, including 103 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"shares","element":"transactionShares","label":"F1","text":"On May 17, 2022, the Reporting Person was granted 8,706 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2022 RSUs\").  In connection with the vesting of the 2022 RSUs on May 16, 2023: (i) 0.4075 of the 2022 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2022 RSUs, including 103 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On May 17, 2022, the Reporting Person was granted 8,706 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2022 RSUs\").  In connection with the vesting of the 2022 RSUs on May 16, 2023: (i) 0.4075 of the 2022 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2022 RSUs, including 103 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On May 17, 2022, the Reporting Person was granted 8,706 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2022 RSUs\").  In connection with the vesting of the 2022 RSUs on May 16, 2023: (i) 0.4075 of the 2022 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2022 RSUs, including 103 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"On May 17, 2022, the Reporting Person was granted 8,706 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2022 RSUs\").  In connection with the vesting of the 2022 RSUs on May 16, 2023: (i) 0.4075 of the 2022 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2022 RSUs, including 103 DEUs, converted into common stock of the Issuer on a one-for-one basis."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":8809.4075},"source":{"system":"sec-edgar","filing":"0001209191-23-030840","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123030840/doc4.xml","form_type":"4"}},{"id":1887276,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-19T00:10:04.000Z","date":"2023-05-16","kind":"exercise","planned":false,"acquired":true,"shares":8809,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 17, 2022, the Reporting Person was granted 8,706 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2022 RSUs\").  In connection with the vesting of the 2022 RSUs on May 16, 2023: (i) 0.4075 of the 2022 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2022 RSUs, including 103 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On May 17, 2022, the Reporting Person was granted 8,706 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2022 RSUs\").  In connection with the vesting of the 2022 RSUs on May 16, 2023: (i) 0.4075 of the 2022 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2022 RSUs, including 103 DEUs, converted into common stock of the Issuer on a one-for-one basis."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On May 17, 2022, the Reporting Person was granted 8,706 time-vested restricted stock units (\"RSUs\") pursuant to the Amkor Technology, Inc. (the \"Issuer\") 2021 Equity Incentive Plan, as amended (the \"Plan\"), and the applicable award agreement (the \"2022 RSUs\").  In connection with the vesting of the 2022 RSUs on May 16, 2023: (i) 0.4075 of the 2022 RSUs, which had accrued as dividend equivalent units (\"DEUs\") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2022 RSUs, including 103 DEUs, converted into common stock of the Issuer on a one-for-one basis."}],"balance_after":49901,"source":{"system":"sec-edgar","filing":"0001209191-23-030840","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123030840/doc4.xml","form_type":"4"}},{"id":1942092,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2023-03-22T22:42:21.000Z","date":"2023-03-20","kind":"grant","planned":false,"acquired":true,"shares":26.1076,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on March 20, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on March 20, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on March 20, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on March 20, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on March 20, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8809.4075,"derivative":{"underlying":"Common Stock","underlying_shares":26.1076},"source":{"system":"sec-edgar","filing":"0001209191-23-020619","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123020619/doc4.xml","form_type":"4"}},{"id":2075140,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2022-12-29T22:28:40.000Z","date":"2022-12-27","kind":"grant","acquired":true,"shares":26.7602,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on December 27, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on December 27, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on December 27, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on December 27, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on December 27, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8783.2999,"derivative":{"underlying":"Common Stock","underlying_shares":26.7602},"source":{"system":"sec-edgar","filing":"0001209191-22-062934","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919122062934/doc4.xml","form_type":"4"}},{"id":2150069,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2022-09-28T21:08:32.000Z","date":"2022-09-26","kind":"grant","acquired":true,"shares":25.9881,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on September 26, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on September 26, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on September 26, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on September 26, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Represents dividend equivalent units (\"DEUs\") accrued with respect to time-vested restricted stock units (\"RSUs\") of Amkor Technology, Inc. (the \"Issuer\") upon the Issuer's payment of a dividend on September 26, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."}],"balance_after":8756.5397,"derivative":{"underlying":"Common Stock","underlying_shares":25.9881},"source":{"system":"sec-edgar","filing":"0001209191-22-051481","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919122051481/doc4.xml","form_type":"4"}},{"id":2219560,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":35455,"kind":"person","name":"McCourt MaryFrances","position":1,"cik":"0001730724","reported_name":"McCourt MaryFrances","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2022-06-29T23:55:18.000Z","date":"2022-06-27","kind":"grant","acquired":true,"shares":24.5516,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents DEUs accrued with respect to the RSUs upon the Issuer's payment of a dividend on June 27, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents DEUs accrued with respect to the RSUs upon the Issuer's payment of a dividend on June 27, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents DEUs accrued with respect to the RSUs upon the Issuer's payment of a dividend on June 27, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents DEUs accrued with respect to the RSUs upon the Issuer's payment of a dividend on June 27, 2022. 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