AMKR

SEC source: 0001158926-25-000002 · wk-form4_1737583535.xml · nonDerivative · entry 1

KIM JOHN T · CIK 0001158926 · 10% owner · Member of 10% owner group (6)

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,029,736

F1 · shares: On January 17, 2025, the James J. Kim 2021 Qualified Annuity Trust U/A dated 12/15/2021 distributed 274,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person. Susan Y. Kim and James J. Kim are co-trustees of the trust.

SEC source: 0001158839-25-000002 · wk-form4_1737583135.xml · nonDerivative · entry 1

KIM JAMES J · CIK 0001158839 · 10% owner · Member of 10% owner group (5)

10b5-1 filing: No plan indicated

Ownership: Indirect · By self as Trustee of own GRATs

Disclosed balance after: 0

F1 · shares: On January 17, 2025, the James J. Kim 2021 Qualified Annuity Trust U/A dated 12/15/2021 (the "JJK 2021 Trust") distributed 274,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to Susan Y. Kim and 274,000 shares of the Issuer's Common Stock to John T. Kim. The Reporting Person and Susan Y. Kim are co-trustees of the JJK 2021 Trust.

F2 · balance_after: On January 7, 2025, the JJK 2021 Trust distributed 790,097 shares of the Issuer's Common Stock to the Reporting Person. Because the Reporting Person is a trustee of the JJK 2021 Trust, this transaction was a mere change in the Reporting Person's form of ownership from indirect to direct and thus not reportable on a Form 4.

SEC source: 0001158922-25-000004 · wk-form4_1737583403.xml · nonDerivative · entry 2

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (7)

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,732,475

F1 · shares: On January 17, 2025, the James J. Kim 2021 Qualified Annuity Trust U/A dated 12/15/2021 (the "JJK 2021 Trust") distributed 274,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person and 274,000 shares of the Issuer's Common Stock to John T. Kim. The Reporting Person and James J. Kim are co-trustees of the JJK 2021 Trust.

SEC source: 0001158922-25-000004 · wk-form4_1737583403.xml · nonDerivative · entry 1

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (7)

10b5-1 filing: No plan indicated

Ownership: Indirect · By James J. Kim 2021 GRAT dtd 12/15/21

Disclosed balance after: 0

F1 · shares: On January 17, 2025, the James J. Kim 2021 Qualified Annuity Trust U/A dated 12/15/2021 (the "JJK 2021 Trust") distributed 274,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person and 274,000 shares of the Issuer's Common Stock to John T. Kim. The Reporting Person and James J. Kim are co-trustees of the JJK 2021 Trust.

F2 · balance_after: The Reporting Person's previous Form 4 filed January 10, 2025 reported a distribution of 790,019 shares of the Issuer's Common Stock from the JJK 2021 Trust to James J. Kim. The correct number of shares for that distribution was 790,097 shares.

SEC source: 0001906235-25-000004 · wk-form4_1737583276.xml · nonDerivative · entry 1

James J. Kim 2021 Qualified Annuity Trust U/A Dated 12/15/2021 · CIK 0001906235 · Member of 10% owner group (3)

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · shares: On January 17, 2025, the Reporting Person distributed 274,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Susan Y. Kim and 274,000 shares of the Issuer's Common Stock to John T. Kim. Susan Y. Kim and James J. Kim are co-trustees of the Reporting Person.

F2 · balance_after: The Reporting Person's previous Form 4 filed January 10, 2025 reported a distribution of 790,019 shares of the Issuer's Common Stock from the Reporting Person to James J. Kim. The correct number of shares for that distribution was 790,097 shares.

SEC source: 0001158840-25-000002 · wk-form4_1737582948.xml · nonDerivative · entry 1

KIM AGNES C · CIK 0001158840 · Member of 10% owner group (3)

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spouse

Disclosed balance after: 10,890,435

F1 · shares: On January 17, 2025, the James J. Kim 2021 Qualified Annuity Trust U/A dated 12/15/2021 distributed 274,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to Susan Y. Kim and 274,000 shares of the Issuer's Common Stock to John T. Kim. Susan Y. Kim and James J. Kim are co-trustees of the trust.

F2 · balance_after: James J. Kim is the spouse of the Reporting Person. 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.

SEC source: 0001906235-25-000002 · wk-form4_1736548060.xml · nonDerivative · entry 1

James J. Kim 2021 Qualified Annuity Trust U/A Dated 12/15/2021 · CIK 0001906235 · Member of 10% owner group (2)

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 548,078

F1 · shares: On January 7, 2025, the Reporting Person distributed 790,019 shares of the Common Stock of Amkor Technology, Inc. to James J. Kim as a gift.

SEC source: 0001158922-25-000002 · wk-form4_1736547658.xml · nonDerivative · entry 1

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (6)

10b5-1 filing: No plan indicated

Ownership: Indirect · By James J. Kim 2021 GRAT dtd 12/15/21

Disclosed balance after: 548,078

F1 · shares: On January 7, 2025, the James J. Kim 2021 Qualified Annuity Trust U/A Dated 12/15/2021 transferred 790,019 shares of Common Stock of Amkor Technology, Inc. (the "Issuer") to James J. Kim as a gift. The Reporting Person is a co-trustee of the trust.

F2 · balance_after: The Reporting Person is (i) a trustee of trusts for the benefit of her immediate family members (other than grantor retained annuity trusts ("GRATs")) which own 4,418,610 shares of the Issuer's Common Stock; (ii) a trustee of GRATs for the benefit of members of her immediate family which own 10,233,083 shares of the Issuer's Common Stock; (iii) a trustee of GRATs of which the Reporting Person was the settlor and is the sole annuitant which own 3,483,000 shares of the Issuer's Common Stock; (iv) a general partner of a limited partnership (Sujochil, LP) which owns 19,484,809 shares of the Issuer's Common Stock;

F3 · balance_after: (Continued from Footnote 2) (v) a manager of a limited liability company being treated as a corporation for purposes of Section 16 which owns 16,710,668 shares of the Issuer's Common Stock and (vi) as referenced in Footnote 5, a member of Sujoda Management, LLC, which indirectly owns 2,478,325 shares of the Issuer's Common Stock. Pursuant to the Form 4 instructions, the Reporting Person is being treated as having a pecuniary interest in all of such shares.

F4 · balance_after: 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.

SEC source: 0001047127-24-000225 · wk-form4_1735235242.xml · derivative · entry 1

CHURCHILL WINSTON J · CIK 0000923792 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,991.0465

Underlying: Common Stock · 108.7979 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F1 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F1 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

SEC source: 0001994714-24-000002 · wk-form4_1735250975.xml · nonDerivative · entry 1

2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023 · CIK 0001994714 · Member of 10% owner group (2)

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,483,000

F1 · shares: On December 23, 2024, the Reporting Person distributed 1,017,000 shares of the Common Stock of Amkor Technology, Inc. to Susan Y. Kim as a gift.

SEC source: 0001047127-24-000237 · wk-form4_1735236453.xml · derivative · entry 12

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (7)

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,991.0465

Underlying: Common Stock · 108.7979 shares

Expires not disclosed

F6 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F6 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F6 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

SEC source: 0001047127-24-000237 · wk-form4_1735236453.xml · nonDerivative · entry 2

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (7)

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,458,475

F1 · shares: On December 23, 2024, the Susan Y. Kim 2023 Grantor Retained Annuity Trust dated 9/15/2023 distributed 1,017,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person as a gift. Because the Reporting Person is the annuitant and sole trustee of the trust, such distribution was a mere change in the form of ownership from indirect to direct and is being voluntarily reported by the Reporting Person on this Form 4.

SEC source: 0001047127-24-000237 · wk-form4_1735236453.xml · nonDerivative · entry 1

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (7)

10b5-1 filing: No plan indicated

Ownership: Indirect · By own GRATs

Disclosed balance after: 3,483,000

F1 · shares: On December 23, 2024, the Susan Y. Kim 2023 Grantor Retained Annuity Trust dated 9/15/2023 distributed 1,017,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person as a gift. Because the Reporting Person is the annuitant and sole trustee of the trust, such distribution was a mere change in the form of ownership from indirect to direct and is being voluntarily reported by the Reporting Person on this Form 4.

F2 · balance_after: The Reporting Person is (i) a trustee of trusts for the benefit of her immediate family members (other than grantor retained annuity trusts ("GRATs")) which own 4,418,610 shares of the Issuer's Common Stock; (ii) a trustee of GRATs for the benefit of members of her immediate family which own 11,023,102 shares of the Issuer's Common Stock; (iii) a trustee of GRATs of which the Reporting Person was the settlor and is the sole annuitant which own 3,483,000 shares of the Issuer's Common Stock; (iv) a general partner of a limited partnership (Sujochil, LP) which owns 19,484,809 shares of the Issuer's Common Stock;

F3 · balance_after: (Continued from Footnote 2) (v) a manager of a limited liability company being treated as a corporation for purposes of Section 16 which owns 16,710,668 shares of the Issuer's Common Stock and (vi) as referenced in Footnote 5, a member of Sujoda Management, LLC, which indirectly owns 2,478,325 shares of the Issuer's Common Stock. Pursuant to the Form 4 instructions, the Reporting Person is being treated as having a pecuniary interest in all of such shares.

F4 · balance_after: 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.

SEC source: 0001047127-24-000235 · wk-form4_1735236130.xml · derivative · entry 1

Liao Daniel JL · CIK 0001775769 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,991.0465

Underlying: Common Stock · 108.7979 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F1 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F1 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

SEC source: 0001047127-24-000233 · wk-form4_1735236056.xml · derivative · entry 2

McCourt MaryFrances · CIK 0001730724 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,991.0465

Underlying: Common Stock · 108.7979 shares

Expires not disclosed

F2 · derivative.exercise_price: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F2 · derivative.exercise_date: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F2 · derivative.expiration_date: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

SEC source: 0001047127-24-000233 · wk-form4_1735236056.xml · derivative · entry 1

McCourt MaryFrances · CIK 0001730724 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,768.0364

Underlying: Common Stock · 157.5386 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (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.

F1 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (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.

F1 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (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.

SEC source: 0001047127-24-000231 · wk-form4_1735235991.xml · derivative · entry 1

WATSON DAVID N · CIK 0001276908 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,991.0465

Underlying: Common Stock · 108.7979 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F1 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F1 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

SEC source: 0001047127-24-000229 · wk-form4_1735235558.xml · derivative · entry 1

Tily Gil C. · CIK 0001405591 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,991.0465

Underlying: Common Stock · 108.7979 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F1 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F1 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

SEC source: 0001047127-24-000227 · wk-form4_1735235344.xml · derivative · entry 2

Morse Robert Randolph · CIK 0001569086 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,991.0465

Underlying: Common Stock · 108.7979 shares

Expires not disclosed

F2 · derivative.exercise_price: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F2 · derivative.exercise_date: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F2 · derivative.expiration_date: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

SEC source: 0001047127-24-000227 · wk-form4_1735235344.xml · derivative · entry 1

Morse Robert Randolph · CIK 0001569086 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,768.0364

Underlying: Common Stock · 157.5386 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (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.

F1 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (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.

F1 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (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.

SEC source: 0001047127-24-000223 · wk-form4_1735235125.xml · derivative · entry 2

Carolin Roger Anthony · CIK 0001351909 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,991.0465

Underlying: Common Stock · 108.7979 shares

Expires not disclosed

F2 · derivative.exercise_price: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F2 · derivative.exercise_date: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F2 · derivative.expiration_date: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

SEC source: 0001047127-24-000223 · wk-form4_1735235125.xml · derivative · entry 1

Carolin Roger Anthony · CIK 0001351909 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,768.0364

Underlying: Common Stock · 157.5386 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (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.

F1 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (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.

F1 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (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.

SEC source: 0001047127-24-000221 · wk-form4_1735234954.xml · derivative · entry 3

ALEXANDER DOUGLAS A · CIK 0001195858 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,991.0465

Underlying: Common Stock · 108.7979 shares

Expires not disclosed

F3 · derivative.exercise_price: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F3 · derivative.exercise_date: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F3 · derivative.expiration_date: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of the Issuer granted to the Reporting Person on May 14, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

SEC source: 0001047127-24-000221 · wk-form4_1735234954.xml · derivative · entry 2

ALEXANDER DOUGLAS A · CIK 0001195858 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,768.0364

Underlying: Common Stock · 157.5386 shares

Expires not disclosed

F2 · derivative.exercise_price: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of 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.

F2 · derivative.exercise_date: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of 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.

F2 · derivative.expiration_date: Represents DEUs accrued upon the payment of a dividend on December 23, 2024 with respect to RSUs of 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.

SEC source: 0001047127-24-000221 · wk-form4_1735234954.xml · derivative · entry 1

ALEXANDER DOUGLAS A · CIK 0001195858 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,107.2443

Underlying: Common Stock · 161.775 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 17, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F1 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 17, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

F1 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2024 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 17, 2022. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

SEC source: 0001047127-24-000219 · wk-form4_1734643986.xml · derivative · entry 1

LIU JOHN D · CIK 0001288449 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,970

Underlying: Common Stock · 2,970 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents shares of common stock underlying time-vested restricted stock units ("RSUs") granted on December 16, 2024 (the "Grant Date") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan. Subject to the terms and conditions of the applicable award agreement, the 2024 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 2024 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer.

F1 · derivative.exercise_date: Represents shares of common stock underlying time-vested restricted stock units ("RSUs") granted on December 16, 2024 (the "Grant Date") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan. Subject to the terms and conditions of the applicable award agreement, the 2024 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 2024 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer.

F1 · derivative.expiration_date: Represents shares of common stock underlying time-vested restricted stock units ("RSUs") granted on December 16, 2024 (the "Grant Date") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan. Subject to the terms and conditions of the applicable award agreement, the 2024 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 2024 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · derivative · entry 12

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,523

Underlying: Common Stock · 224 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: The reported transaction involved the withholding of 224 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F4 · shares: The reported transaction involved the withholding of 224 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F4 · derivative.exercise_date: The reported transaction involved the withholding of 224 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F4 · derivative.expiration_date: The reported transaction involved the withholding of 224 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · derivative · entry 11

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,128

Underlying: Common Stock · 47 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: The reported transaction involved the withholding of 47 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F3 · shares: The reported transaction involved the withholding of 47 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F3 · derivative.exercise_date: The reported transaction involved the withholding of 47 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F3 · derivative.expiration_date: The reported transaction involved the withholding of 47 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · derivative · entry 10

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,850

Underlying: Common Stock · 30 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The reported transaction involved the withholding of 30 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F2 · shares: The reported transaction involved the withholding of 30 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F2 · derivative.exercise_date: The reported transaction involved the withholding of 30 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F2 · derivative.expiration_date: The reported transaction involved the withholding of 30 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · derivative · entry 9

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 790

Underlying: Common Stock · 27 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The reported transaction involved the withholding of 27 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

F1 · shares: The reported transaction involved the withholding of 27 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

F1 · derivative.exercise_date: The reported transaction involved the withholding of 27 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

F1 · derivative.expiration_date: The reported transaction involved the withholding of 27 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · nonDerivative · entry 8

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F4 · kind: The reported transaction involved the withholding of 224 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · nonDerivative · entry 7

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 224

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: The reported transaction involved the withholding of 224 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · nonDerivative · entry 6

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F3 · kind: The reported transaction involved the withholding of 47 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · nonDerivative · entry 5

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · price: The reported transaction involved the withholding of 47 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · nonDerivative · entry 4

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F2 · kind: The reported transaction involved the withholding of 30 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · nonDerivative · entry 3

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: The reported transaction involved the withholding of 30 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · nonDerivative · entry 2

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The reported transaction involved the withholding of 27 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000211 · wk-form4_1733866655.xml · nonDerivative · entry 1

Engel Kevin · CIK 0001965254 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The reported transaction involved the withholding of 27 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · derivative · entry 12

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,998

Underlying: Common Stock · 270 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: The reported transaction involved the withholding of 270 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F4 · shares: The reported transaction involved the withholding of 270 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F4 · derivative.exercise_date: The reported transaction involved the withholding of 270 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F4 · derivative.expiration_date: The reported transaction involved the withholding of 270 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · derivative · entry 11

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,500

Underlying: Common Stock · 67 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: The reported transaction involved the withholding of 67 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F3 · shares: The reported transaction involved the withholding of 67 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F3 · derivative.exercise_date: The reported transaction involved the withholding of 67 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F3 · derivative.expiration_date: The reported transaction involved the withholding of 67 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · derivative · entry 10

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,695

Underlying: Common Stock · 66 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The reported transaction involved the withholding of 66 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F2 · shares: The reported transaction involved the withholding of 66 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F2 · derivative.exercise_date: The reported transaction involved the withholding of 66 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

F2 · derivative.expiration_date: The reported transaction involved the withholding of 66 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · derivative · entry 9

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 656

Underlying: Common Stock · 24 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The reported transaction involved the withholding of 24 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

F1 · shares: The reported transaction involved the withholding of 24 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

F1 · derivative.exercise_date: The reported transaction involved the withholding of 24 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

F1 · derivative.expiration_date: The reported transaction involved the withholding of 24 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · nonDerivative · entry 8

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,427

F4 · kind: The reported transaction involved the withholding of 270 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · nonDerivative · entry 7

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,697

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: The reported transaction involved the withholding of 270 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · nonDerivative · entry 6

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,427

F3 · kind: The reported transaction involved the withholding of 67 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · nonDerivative · entry 5

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,494

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · price: The reported transaction involved the withholding of 67 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · nonDerivative · entry 4

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,427

F2 · kind: The reported transaction involved the withholding of 66 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · nonDerivative · entry 3

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,493

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: The reported transaction involved the withholding of 66 shares of the Issuer's common stock issuable upon the early vesting of an equal number of restricted stock units RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · nonDerivative · entry 2

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,427

F1 · kind: The reported transaction involved the withholding of 24 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

SEC source: 0001047127-24-000209 · wk-form4_1733866509.xml · nonDerivative · entry 1

Haghighi Farshad · CIK 0001887579 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,451

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The reported transaction involved the withholding of 24 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.