{"transactions":[{"id":1075181,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":76937,"kind":"person","name":"KIM DAVID D","position":1,"cik":"0001158924","reported_name":"KIM DAVID D","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Member of 10% owner group (5)"}}],"security":"Common Stock","published_at":"2025-08-05T23:27:48.000Z","date":"2025-08-01","kind":"purchase","planned":false,"acquired":true,"shares":441589,"price":21.85,"value":9648719.65,"ownership":{"direct":false,"nature":"By Sujoda Investments, LP"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On August 1, 2025, James J. Kim distributed 441,589 shares of the Common Stock of Amkor Technology, Inc. (the \"Issuer\") to Sujoda Investments, LP pursuant to the terms of a transaction between members of the Kim family group."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The sole general partner of Sujoda Investments, LP is Sujoda Management, LLC. The Reporting Person is one of three members of Sujoda Management, LLC. Sujoda Management, LLC is being treated as a limited partnership for purposes of Section 16, and, pursuant to the Form 4 instructions, the Reporting Person has elected to treat all of the shares of the Issuer's Common Stock owned by Sujoda Investments, LP as beneficially owned by the Reporting Person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities, except to the extent of the Reporting Person's pecuniary interest therein, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (\"Section 16\"), or for any other purpose."}],"balance_after":3789479,"source":{"system":"sec-edgar","filing":"0001158924-25-000005","document":"wk-form4_1754436465.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000115892425000005/wk-form4_1754436465.xml","form_type":"4"}},{"id":1243878,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":76937,"kind":"person","name":"KIM DAVID D","position":1,"cik":"0001158924","reported_name":"KIM DAVID D","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Member of 10% owner group (5)"}}],"security":"Common Stock","published_at":"2025-02-26T22:31:00.000Z","date":"2025-02-24","kind":"purchase","planned":false,"acquired":true,"shares":869565,"price":21.85,"value":18999995.25,"ownership":{"direct":false,"nature":"By Sujoda Investments, LP"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 24, 2025, James J. Kim distributed 869,565 shares of the Common Stock of Amkor Technology, Inc. (the \"Issuer\") to Sujoda Investments, LP pursuant to the terms of a transaction between members of the Kim family group."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The sole general partner of Sujoda Investments, LP is Sujoda Management, LLC. The Reporting Person is one of three members of Sujoda Management, LLC. Sujoda Management, LLC is being treated as a limited partnership for purposes of Section 16, and, pursuant to the Form 4 instructions, the Reporting Person has elected to treat all of the shares of the Issuer's Common Stock owned by Sujoda Investments, LP as beneficially owned by the Reporting Person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities, except to the extent of the Reporting Person's pecuniary interest therein, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (\"Section 16\"), or for any other purpose."}],"balance_after":3347890,"source":{"system":"sec-edgar","filing":"0001158924-25-000002","document":"wk-form4_1740609053.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000115892425000002/wk-form4_1740609053.xml","form_type":"4"}},{"id":2454806,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":76937,"kind":"person","name":"KIM DAVID D","position":1,"cik":"0001158924","reported_name":"KIM DAVID D","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Member of 10% owner group (7)"}}],"security":"Common Stock","published_at":"2022-01-03T22:23:51.000Z","date":"2021-12-30","kind":"sale","acquired":false,"shares":1337332,"price":24.68,"value":33005353.76,"ownership":{"direct":false,"nature":"By Sujoda Investments, LP"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"On December 30, 2021, Suloda Investments, LP transferred 668,666 shares of the Issue's Common Stock to Agnes C. Kim and 668,666 shares of the Issuer's Common Stock to James J. Kim in partial payment of the principal of a joint Note."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The sole general partner of Sujoda Investments, LP is Sujoda Management, LLC.  The reporting person is one of three members of Sujoda Management, LLC.  Sujoda Management, LLC is being treated as a limited partnership for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, and the reporting person has elected to treat all of the shares of the Issuer's Common Stock owned by Sujoda Investments, LP as beneficially owned by the reporting person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F6","text":"The reporting person disclaims beneficial ownership of these securities, except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities, except to the extent of the reporting person's pecuniary interest therein, for purposes of Section 16, or for any other purpose."}],"balance_after":2478325,"source":{"system":"sec-edgar","filing":"0001158924-22-000001","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000115892422000001/primary_doc.xml","form_type":"4"}},{"id":2454805,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":76937,"kind":"person","name":"KIM DAVID D","position":1,"cik":"0001158924","reported_name":"KIM DAVID D","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Member of 10% owner group (7)"}}],"security":"Common Stock","published_at":"2022-01-03T22:23:51.000Z","date":"2021-12-30","kind":"sale","acquired":false,"shares":1187087,"price":24.68,"value":29297307.16,"ownership":{"direct":false,"nature":"By Sujoda Investments, LP"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"On December 30, 2021, Sujoda Investments, LP transferred 1,187,087 shares of the Issue's Common Stock to James J. Kim in payment of the principal of a Note."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The sole general partner of Sujoda Investments, LP is Sujoda Management, LLC.  The reporting person is one of three members of Sujoda Management, LLC.  Sujoda Management, LLC is being treated as a limited partnership for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, and the reporting person has elected to treat all of the shares of the Issuer's Common Stock owned by Sujoda Investments, LP as beneficially owned by the reporting person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F6","text":"The reporting person disclaims beneficial ownership of these securities, except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities, except to the extent of the reporting person's pecuniary interest therein, for purposes of Section 16, or for any other purpose."}],"balance_after":3815657,"source":{"system":"sec-edgar","filing":"0001158924-22-000001","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000115892422000001/primary_doc.xml","form_type":"4"}},{"id":2454804,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":76937,"kind":"person","name":"KIM DAVID D","position":1,"cik":"0001158924","reported_name":"KIM DAVID D","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Member of 10% owner group (7)"}}],"security":"Common Stock","published_at":"2022-01-03T22:23:51.000Z","date":"2021-12-30","kind":"sale","acquired":false,"shares":1187087,"price":24.68,"value":29297307.16,"ownership":{"direct":false,"nature":"By Sujoda Investments, LP"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On December 30, 2021, Sujoda Investments, LP transferred 1,187,087 shares of the Issuer's Common Stock to Agnes C. Kim in payment of the principal of a Note."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The sole general partner of Sujoda Investments, LP is Sujoda Management, LLC.  The reporting person is one of three members of Sujoda Management, LLC.  Sujoda Management, LLC is being treated as a limited partnership for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, and the reporting person has elected to treat all of the shares of the Issuer's Common Stock owned by Sujoda Investments, LP as beneficially owned by the reporting person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F6","text":"The reporting person disclaims beneficial ownership of these securities, except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities, except to the extent of the reporting person's pecuniary interest therein, for purposes of Section 16, or for any other purpose."}],"balance_after":5002744,"source":{"system":"sec-edgar","filing":"0001158924-22-000001","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000115892422000001/primary_doc.xml","form_type":"4"}},{"id":2458017,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":76937,"kind":"person","name":"KIM DAVID D","position":1,"cik":"0001158924","reported_name":"KIM DAVID D","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Exhibit 99.1"}}],"security":"Common Stock","published_at":"2021-12-28T21:38:54.000Z","date":"2021-01-15","kind":"sale","acquired":false,"shares":6895,"price":18.0441,"value":124414.0695,"ownership":{"direct":false,"nature":"By self as trustee"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On January 15, the reporting person sold 6,895 shares of the Issuer's Common Stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reporting person may be deemed to indirectly own 2,691,618 shares of the Issuer's Common Stock held through various family trusts of which the reporting person is a trustee and 6,189,331 shares of the Issuer's Common Stock held by by Sujoda Investments, L.P., a limited partnership established for the benefit of members of the James J. Kim family of which the reporting person is a general partner.  The reporting person disclaims beneficial ownership of these securities, except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities, except to the extent of the reporting person's pecuniary interest therein, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":2691618,"source":{"system":"sec-edgar","filing":"0001158924-21-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000115892421000004/primary_doc.xml","form_type":"4"}},{"id":2859986,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":76937,"kind":"person","name":"KIM DAVID D","position":1,"cik":"0001158924","reported_name":"KIM DAVID D","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Exhibit 99.1"}}],"security":"Common Stock","published_at":"2021-02-16T13:47:21.000Z","date":"2020-03-16","kind":"gift","acquired":true,"shares":15641,"price":7.47,"value":116838.27,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 16, 2020, the James J. Kim Qualified Annuity Trust U/A Dated 10/13/14 distributed 15,641 shares of the Issuer's Common Stock to each of Susan Y. Kim, John T. Kim and David D. Kim. James J. Kim and Susan Y. Kim are co-trustees."}],"balance_after":15641,"source":{"system":"sec-edgar","filing":"0000899243-21-006546","document":"doc5.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000089924321006546/doc5.xml","form_type":"5"}},{"id":4490140,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":179670,"kind":"organization","name":"DAVID D KIM TRUST OF 12/31/87","position":1,"cik":"0001158842","reported_name":"DAVID D KIM TRUST OF 12/31/87","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Exhibit 99.1"}},{"id":76937,"kind":"person","name":"KIM DAVID D","position":2,"cik":"0001158924","reported_name":"KIM DAVID D","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Exhibit 99.1"}}],"security":"Common Stock","published_at":"2017-01-17T19:58:04.000Z","date":"2017-01-12","kind":"sale","acquired":false,"shares":19484809,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This report is filed jointly by David D. Kim and the David D. Kim Trust dated 12/31/87 (the \"Trust\").   David D. Kim is the sole trustee of the Trust.   On January 12, 2017, the Trust sold 19,484,809 shares of the Company's Common Stock to a newly created Pennsylvania limited partnership, Sujochil, LP, at a price of $10.8984 per share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This report is filed jointly by David D. Kim and the David D. Kim Trust dated 12/31/87 (the \"Trust\").   David D. Kim is the sole trustee of the Trust.   On January 12, 2017, the Trust sold 19,484,809 shares of the Company's Common Stock to a newly created Pennsylvania limited partnership, Sujochil, LP, at a price of $10.8984 per share."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held indirectly by David D. Kim, the trustee of the Trust."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-17-001318","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000089924317001318/doc4.xml","form_type":"4"}},{"id":4490139,"issuer":{"id":3481,"kind":"organization","name":"AMKOR TECHNOLOGY, INC.","symbol":"AMKR"},"owners":[{"id":179670,"kind":"organization","name":"DAVID D KIM TRUST OF 12/31/87","position":1,"cik":"0001158842","reported_name":"DAVID D KIM TRUST OF 12/31/87","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Exhibit 99.1"}},{"id":76937,"kind":"person","name":"KIM DAVID D","position":2,"cik":"0001158924","reported_name":"KIM DAVID D","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"See Exhibit 99.1"}}],"security":"Common Stock","published_at":"2017-01-17T19:58:04.000Z","date":"2017-01-12","kind":"sale","acquired":false,"shares":19484809,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This report is filed jointly by David D. Kim and the David D. Kim Trust dated 12/31/87 (the \"Trust\").   David D. Kim is the sole trustee of the Trust.   On January 12, 2017, the Trust sold 19,484,809 shares of the Company's Common Stock to a newly created Pennsylvania limited partnership, Sujochil, LP, at a price of $10.8984 per share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This report is filed jointly by David D. Kim and the David D. Kim Trust dated 12/31/87 (the \"Trust\").   David D. Kim is the sole trustee of the Trust.   On January 12, 2017, the Trust sold 19,484,809 shares of the Company's Common Stock to a newly created Pennsylvania limited partnership, Sujochil, LP, at a price of $10.8984 per share."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"This report is filed jointly by David D. Kim and the David D. Kim Trust dated 12/31/87 (the \"Trust\").   David D. Kim is the sole trustee of the Trust.   On January 12, 2017, the Trust sold 19,484,809 shares of the Company's Common Stock to a newly created Pennsylvania limited partnership, Sujochil, LP, at a price of $10.8984 per share."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-17-001318","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1047127/000089924317001318/doc4.xml","form_type":"4"}}]}