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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 annually\nthereafter, such that 100% will be vested on the third anniversary of the 2025 Grant Date."}],"balance_after":36218,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":18106},"source":{"system":"sec-edgar","filing":"0001628280-26-011081","document":"wk-form4_1771967408.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026011081/wk-form4_1771967408.xml","form_type":"4"}},{"id":885748,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Restricted Stock Units","published_at":"2026-02-24T21:10:11.000Z","date":"2026-02-20","kind":"exercise","planned":false,"acquired":false,"shares":16805,"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. 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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 that\n100% will be vested on the third anniversary of the 2024 Grant Date."}],"balance_after":16810,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":16805},"source":{"system":"sec-edgar","filing":"0001628280-26-011081","document":"wk-form4_1771967408.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026011081/wk-form4_1771967408.xml","form_type":"4"}},{"id":885747,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2026-02-24T21:10:11.000Z","date":"2026-02-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":7759,"price":47.94,"value":371966.46,"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. 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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 tax withholding obligations. 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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":"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":26743,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":26743},"source":{"system":"sec-edgar","filing":"0001628280-26-010234","document":"wk-form4_1771622508.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026010234/wk-form4_1771622508.xml","form_type":"4"}},{"id":891245,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2026-02-20T21:21:51.000Z","date":"2026-02-18","kind":"tax_withholding","planned":false,"acquired":false,"shares":3996,"price":46.74,"value":186773.04,"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":107224,"source":{"system":"sec-edgar","filing":"0001628280-26-010234","document":"wk-form4_1771622508.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026010234/wk-form4_1771622508.xml","form_type":"4"}},{"id":891244,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2026-02-20T21:21:51.000Z","date":"2026-02-18","kind":"grant","planned":false,"acquired":true,"shares":9325,"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 9,325 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":111220,"source":{"system":"sec-edgar","filing":"0001628280-26-010234","document":"wk-form4_1771622508.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026010234/wk-form4_1771622508.xml","form_type":"4"}},{"id":891243,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2026-02-20T21:21:51.000Z","date":"2026-02-18","kind":"tax_withholding","planned":false,"acquired":false,"shares":1945,"price":46.74,"value":90909.3,"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":101895,"source":{"system":"sec-edgar","filing":"0001628280-26-010234","document":"wk-form4_1771622508.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026010234/wk-form4_1771622508.xml","form_type":"4"}},{"id":891242,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2026-02-20T21:21:51.000Z","date":"2026-02-18","kind":"grant","planned":false,"acquired":true,"shares":4538,"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 4,538 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":103840,"source":{"system":"sec-edgar","filing":"0001628280-26-010234","document":"wk-form4_1771622508.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026010234/wk-form4_1771622508.xml","form_type":"4"}},{"id":897874,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Restricted Stock Units","published_at":"2026-02-18T21:11:33.000Z","date":"2026-02-16","kind":"exercise","planned":false,"acquired":false,"shares":4176,"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 16,703 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 16,703 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 16,703 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."}],"balance_after":4175,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":4176},"source":{"system":"sec-edgar","filing":"0001628280-26-009037","document":"wk-form4_1771449088.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000162828026009037/wk-form4_1771449088.xml","form_type":"4"}},{"id":897873,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2026-02-18T21:11:33.000Z","date":"2026-02-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":1912,"price":47.48,"value":90781.76,"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\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. 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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, 2025 (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 \"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\") 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. 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The Issuer will pay these taxes on behalf of the Reporting Person."}],"balance_after":63323,"source":{"system":"sec-edgar","filing":"0001047127-24-000163","document":"wk-form4_1723754158.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000163/wk-form4_1723754158.xml","form_type":"4"}},{"id":1432799,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2024-08-15T20:36:04.000Z","date":"2024-08-13","kind":"grant","planned":false,"acquired":true,"shares":18023,"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 18,023 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":71046,"source":{"system":"sec-edgar","filing":"0001047127-24-000163","document":"wk-form4_1723754158.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000163/wk-form4_1723754158.xml","form_type":"4"}},{"id":1527129,"issuer":{"id":4438,"kind":"organization","name":"ROGERS CORP","symbol":"ROG"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Capital (Common) Stock","published_at":"2024-05-06T18:14:26.000Z","date":"2024-05-02","kind":"grant","planned":false,"acquired":true,"shares":1500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of Rogers Corporation Capital (Common) Stock receivable pursuant to the May 2, 2024, award of deferred stock units."}],"balance_after":4350,"source":{"system":"sec-edgar","filing":"0001664272-24-000252","document":"f4_a1edp0000016phsma2-live.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/84748/000166427224000252/f4_a1edp0000016phsma2-live.xml","form_type":"4"}},{"id":1570129,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2024-03-19T21:43:19.000Z","date":"2024-03-15","kind":"exercise","planned":false,"acquired":false,"shares":2800,"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 150,000 shares of the Issuer's common stock (the \"Option Shares\") was granted on February 15, 2019 (the \"Option Grant Date\") and vested over four years as 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 thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date."}],"balance_after":0,"derivative":{"exercise_price":9.48,"exercise_date":"2020-02-15","expiration_date":"2029-02-15","underlying":"Common Stock","underlying_shares":2800},"source":{"system":"sec-edgar","filing":"0001047127-24-000063","document":"wk-form4_1710884585.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000063/wk-form4_1710884585.xml","form_type":"4"}},{"id":1570128,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2024-03-19T21:43:19.000Z","date":"2024-03-15","kind":"sale","planned":false,"acquired":false,"shares":2800,"price":31.09,"value":87052.0,"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 February 23, 2023."},{"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 $30.92 to $31.36. 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 (2) to this Form 4."}],"balance_after":53023,"source":{"system":"sec-edgar","filing":"0001047127-24-000063","document":"wk-form4_1710884585.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000063/wk-form4_1710884585.xml","form_type":"4"}},{"id":1570127,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2024-03-19T21:43:19.000Z","date":"2024-03-15","kind":"exercise","planned":false,"acquired":true,"shares":2800,"price":9.48,"value":26544.0,"ownership":{"direct":true},"balance_after":55823,"source":{"system":"sec-edgar","filing":"0001047127-24-000063","document":"wk-form4_1710884585.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000063/wk-form4_1710884585.xml","form_type":"4"}},{"id":1616702,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Restricted Stock Units","published_at":"2024-02-27T21:49:26.000Z","date":"2024-02-23","kind":"exercise","planned":false,"acquired":false,"shares":3493,"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 13,972 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 13,972 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 13,972 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."}],"balance_after":6986,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":3493},"source":{"system":"sec-edgar","filing":"0001047127-24-000057","document":"wk-form4_1709070542.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000057/wk-form4_1709070542.xml","form_type":"4"}},{"id":1616701,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2024-02-27T21:49:26.000Z","date":"2024-02-23","kind":"tax_withholding","planned":false,"acquired":false,"shares":1497,"price":30.59,"value":45793.23,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction represents shares withheld by 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.exercise_date","element":"exerciseDate","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."},{"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":50420,"derivative":{"underlying":"Common Stock","underlying_shares":50420},"source":{"system":"sec-edgar","filing":"0001047127-24-000042","document":"wk-form4_1708641944.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000042/wk-form4_1708641944.xml","form_type":"4"}},{"id":1626078,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2024-02-22T22:46:05.000Z","date":"2024-02-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":9161,"price":29.75,"value":272539.75,"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":51027,"source":{"system":"sec-edgar","filing":"0001047127-24-000042","document":"wk-form4_1708641944.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000042/wk-form4_1708641944.xml","form_type":"4"}},{"id":1626077,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2024-02-22T22:46:05.000Z","date":"2024-02-20","kind":"grant","planned":false,"acquired":true,"shares":21377,"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 21,377 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":60188,"source":{"system":"sec-edgar","filing":"0001047127-24-000042","document":"wk-form4_1708641944.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000042/wk-form4_1708641944.xml","form_type":"4"}},{"id":1630202,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2024-02-21T22:25:48.000Z","date":"2024-02-16","kind":"exercise","planned":false,"acquired":false,"shares":2700,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"This stock option (the \"Option\") to acquire 150,000 shares of the Issuer's common stock (the \"Option Shares\") was granted on February 15, 2019 (the \"Option Grant Date\") and vested over four years as 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 thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date."}],"balance_after":2800,"derivative":{"exercise_price":9.48,"exercise_date":"2020-02-15","expiration_date":"2029-02-15","underlying":"Common Stock","underlying_shares":2700},"source":{"system":"sec-edgar","filing":"0001047127-24-000032","document":"wk-form4_1708554319.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000032/wk-form4_1708554319.xml","form_type":"4"}},{"id":1630201,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Restricted Stock Units","published_at":"2024-02-21T22:25:48.000Z","date":"2024-02-16","kind":"exercise","planned":false,"acquired":false,"shares":4176,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On the Grant Date, the Reporting Person was granted 16,703 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On the Grant Date, the Reporting Person was granted 16,703 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date."}],"balance_after":12527,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":4176},"source":{"system":"sec-edgar","filing":"0001047127-24-000032","document":"wk-form4_1708554319.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712724000032/wk-form4_1708554319.xml","form_type":"4"}},{"id":1630200,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2024-02-21T22:25:48.000Z","date":"2024-02-16","kind":"sale","planned":false,"acquired":false,"shares":2700,"price":30.34,"value":81918.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 23, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.87 to $30.61. 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 shares were sold in multiple transactions at prices ranging from $31.84 to $32.32. 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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and (ii) with respect to the remainder of the Option Shares, in equal quarterly installments thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date."}],"balance_after":10900,"derivative":{"exercise_price":9.48,"exercise_date":"2020-02-15","expiration_date":"2029-02-15","underlying":"Common Stock","underlying_shares":2700},"source":{"system":"sec-edgar","filing":"0001047127-23-000035","document":"wk-form4_1700514785.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712723000035/wk-form4_1700514785.xml","form_type":"4"}},{"id":1735002,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-11-20T21:13:14.000Z","date":"2023-11-17","kind":"sale","planned":false,"acquired":false,"shares":2700,"price":26.19,"value":70713.0,"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 February 23, 2023."},{"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 $26.03 to $26.31. 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 (2) to this Form 4."}],"balance_after":35394,"source":{"system":"sec-edgar","filing":"0001047127-23-000035","document":"wk-form4_1700514785.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712723000035/wk-form4_1700514785.xml","form_type":"4"}},{"id":1735001,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-11-20T21:13:14.000Z","date":"2023-11-17","kind":"exercise","planned":false,"acquired":true,"shares":2700,"price":9.48,"value":25596.0,"ownership":{"direct":true},"balance_after":38094,"source":{"system":"sec-edgar","filing":"0001047127-23-000035","document":"wk-form4_1700514785.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000104712723000035/wk-form4_1700514785.xml","form_type":"4"}},{"id":1755843,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2023-10-24T22:07:14.000Z","date":"2023-10-20","kind":"exercise","planned":false,"acquired":false,"shares":2700,"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 150,000 shares of the Issuer's common stock (the \"Option Shares\") was granted on February 15, 2019 (the \"Option Grant Date\") and vested over four years as 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 thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date."}],"balance_after":13600,"derivative":{"exercise_price":9.48,"exercise_date":"2020-02-15","expiration_date":"2029-02-15","underlying":"Common Stock","underlying_shares":2700},"source":{"system":"sec-edgar","filing":"0001209191-23-053496","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123053496/doc4.xml","form_type":"4"}},{"id":1755842,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-10-24T22:07:14.000Z","date":"2023-10-20","kind":"sale","planned":false,"acquired":false,"shares":2700,"price":22.52,"value":60804.0,"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 February 23, 2023."},{"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 $22.41 to $22.61. 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 (2) to this Form 4."}],"balance_after":35394,"source":{"system":"sec-edgar","filing":"0001209191-23-053496","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123053496/doc4.xml","form_type":"4"}},{"id":1755841,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-10-24T22:07:14.000Z","date":"2023-10-20","kind":"exercise","planned":false,"acquired":true,"shares":2700,"price":9.48,"value":25596.0,"ownership":{"direct":true},"balance_after":38094,"source":{"system":"sec-edgar","filing":"0001209191-23-053496","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123053496/doc4.xml","form_type":"4"}},{"id":1777910,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2023-09-19T22:03:04.000Z","date":"2023-09-15","kind":"exercise","planned":false,"acquired":false,"shares":2700,"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 150,000 shares of the Issuer's common stock (the \"Option Shares\") was granted on February 15, 2019 (the \"Option Grant Date\") and vested over four years as 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 thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date."}],"balance_after":16300,"derivative":{"exercise_price":9.48,"exercise_date":"2020-02-15","expiration_date":"2029-02-15","underlying":"Common Stock","underlying_shares":2700},"source":{"system":"sec-edgar","filing":"0001209191-23-050042","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123050042/doc4.xml","form_type":"4"}},{"id":1777909,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-09-19T22:03:04.000Z","date":"2023-09-15","kind":"sale","planned":false,"acquired":false,"shares":2700,"price":22.68,"value":61236.0,"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 February 23, 2023."},{"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 $22.58 to $22.84. 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 (2) to this Form 4."}],"balance_after":35394,"source":{"system":"sec-edgar","filing":"0001209191-23-050042","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123050042/doc4.xml","form_type":"4"}},{"id":1777908,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-09-19T22:03:04.000Z","date":"2023-09-15","kind":"exercise","planned":false,"acquired":true,"shares":2700,"price":9.48,"value":25596.0,"ownership":{"direct":true},"balance_after":38094,"source":{"system":"sec-edgar","filing":"0001209191-23-050042","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123050042/doc4.xml","form_type":"4"}},{"id":1799960,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2023-08-22T21:57:29.000Z","date":"2023-08-18","kind":"exercise","planned":false,"acquired":false,"shares":2700,"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 150,000 shares of the Issuer's common stock (the \"Option Shares\") was granted on February 15, 2019 (the \"Option Grant Date\") and vested over four years as 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 thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date."}],"balance_after":19000,"derivative":{"exercise_price":9.48,"exercise_date":"2020-02-15","expiration_date":"2029-02-15","underlying":"Common Stock","underlying_shares":2700},"source":{"system":"sec-edgar","filing":"0001209191-23-046941","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123046941/doc4.xml","form_type":"4"}},{"id":1799959,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-08-22T21:57:29.000Z","date":"2023-08-18","kind":"sale","planned":false,"acquired":false,"shares":2700,"price":24.79,"value":66933.0,"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 February 23, 2023."},{"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 $24.60 to $24.93. 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 (2) to this Form 4."}],"balance_after":35394,"source":{"system":"sec-edgar","filing":"0001209191-23-046941","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123046941/doc4.xml","form_type":"4"}},{"id":1799958,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-08-22T21:57:29.000Z","date":"2023-08-18","kind":"exercise","planned":false,"acquired":true,"shares":2700,"price":9.48,"value":25596.0,"ownership":{"direct":true},"balance_after":38094,"source":{"system":"sec-edgar","filing":"0001209191-23-046941","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123046941/doc4.xml","form_type":"4"}},{"id":1823664,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2023-07-25T21:12:14.000Z","date":"2023-07-21","kind":"exercise","planned":false,"acquired":false,"shares":2700,"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 150,000 shares of the Issuer's common stock (the \"Option Shares\") was granted on February 15, 2019 (the \"Option Grant Date\") and vested over four years as 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 thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date."}],"balance_after":21700,"derivative":{"exercise_price":9.48,"exercise_date":"2020-02-15","expiration_date":"2029-02-15","underlying":"Common Stock","underlying_shares":2700},"source":{"system":"sec-edgar","filing":"0001209191-23-043331","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123043331/doc4.xml","form_type":"4"}},{"id":1823663,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-07-25T21:12:14.000Z","date":"2023-07-21","kind":"sale","planned":false,"acquired":false,"shares":2700,"price":28.41,"value":76707.0,"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 February 23, 2023."},{"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 $28.31 to $28.54. 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 (2) to this Form 4."}],"balance_after":35394,"source":{"system":"sec-edgar","filing":"0001209191-23-043331","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123043331/doc4.xml","form_type":"4"}},{"id":1823662,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-07-25T21:12:14.000Z","date":"2023-07-21","kind":"exercise","planned":false,"acquired":true,"shares":2700,"price":9.48,"value":25596.0,"ownership":{"direct":true},"balance_after":38094,"source":{"system":"sec-edgar","filing":"0001209191-23-043331","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123043331/doc4.xml","form_type":"4"}},{"id":1850248,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Employee Stock Option (Right-to-Buy)","published_at":"2023-06-20T20:55:02.000Z","date":"2023-06-16","kind":"exercise","planned":false,"acquired":false,"shares":2700,"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 150,000 shares of the Issuer's common stock (the \"Option Shares\") was granted on February 15, 2019 (the \"Option Grant Date\") and vested over four years as 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 thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date."}],"balance_after":24400,"derivative":{"exercise_price":9.48,"exercise_date":"2020-02-15","expiration_date":"2029-02-15","underlying":"Common Stock","underlying_shares":2700},"source":{"system":"sec-edgar","filing":"0001209191-23-038456","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123038456/doc4.xml","form_type":"4"}},{"id":1850247,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-06-20T20:55:02.000Z","date":"2023-06-16","kind":"sale","planned":false,"acquired":false,"shares":2700,"price":26.38,"value":71226.0,"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 February 23, 2023."},{"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 $26.24 to $26.66. 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 (2) to this Form 4."}],"balance_after":35394,"source":{"system":"sec-edgar","filing":"0001209191-23-038456","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123038456/doc4.xml","form_type":"4"}},{"id":1850246,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":23795,"kind":"person","name":"Faust Megan","position":1,"cik":"0001684564","reported_name":"Faust Megan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO"}}],"security":"Common Stock","published_at":"2023-06-20T20:55:02.000Z","date":"2023-06-16","kind":"exercise","planned":false,"acquired":true,"shares":2700,"price":9.48,"value":25596.0,"ownership":{"direct":true},"balance_after":38094,"source":{"system":"sec-edgar","filing":"0001209191-23-038456","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000120919123038456/doc4.xml","form_type":"4"}}],"next_cursor":"2023-06-20T20:55:02.000000Z,1850246"}