Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| AMKOR TECHNOLOGY, INC.AMKR · Entity 3481 | Director · 10% owner · Member of 10% owner group (5) | September 22, 2026 | September 24, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
AMKOR TECHNOLOGY, INC.
Report date September 22, 2026 · Filed September 24, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Restricted Stock UnitsSEC Table II · derivative / convertible security · Conversion / exercise price $0.00 | Direct | 2,619.5144 |
Reported balance
After 2026-09-22 transaction · row 10
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 10 · 2026-09-22 · Grant · Acquired 3.9978 · Balance 2,619.5144 F4: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 22, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. |
| Common StockSEC Table I · non-derivative | Direct | 6,120,387 |
Reported balance
Holding disclosure · report date 2026-09-22 · row 1
Holding and transaction disclosures are not merged.
1 source rowRow 1 · Balance 6,120,387 |
| Common StockSEC Table I · non-derivative | Indirect2025 Grantor Retained Annuity Trust No. 1 of James J. Kim | 3,244,594 |
Reported balance
Holding disclosure · report date 2026-09-22 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 3,244,594 F1: 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 3,713,610 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer"), (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,124,000 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, and (v) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. F2: 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. |
| Common StockSEC Table I · non-derivative | Indirect2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim | 2,538,000 |
Reported balance
Holding disclosure · report date 2026-09-22 · row 3
Holding and transaction disclosures are not merged.
1 source rowRow 3 · Balance 2,538,000 F1: 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 3,713,610 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer"), (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,124,000 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, and (v) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. F2: 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. |
| Common StockSEC Table I · non-derivative | IndirectBy James J. Kim 2024 GRAT dtd. 8/5/24 | 1,235,000 |
Reported balance
Holding disclosure · report date 2026-09-22 · row 4
Holding and transaction disclosures are not merged.
1 source rowRow 4 · Balance 1,235,000 F1: 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 3,713,610 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer"), (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,124,000 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, and (v) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. F2: 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. |
| Common StockSEC Table I · non-derivative | IndirectBy Agnes C. Kim 2024 GRAT dtd. 8/5/24 | 895,000 |
Reported balance
Holding disclosure · report date 2026-09-22 · row 5
Holding and transaction disclosures are not merged.
1 source rowRow 5 · Balance 895,000 F1: 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 3,713,610 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer"), (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,124,000 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, and (v) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. F2: 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. |
| Common StockSEC Table I · non-derivative | IndirectBy own GRATs | 1,124,000 |
Reported balance
Holding disclosure · report date 2026-09-22 · row 6
Holding and transaction disclosures are not merged.
1 source rowRow 6 · Balance 1,124,000 F1: 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 3,713,610 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer"), (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,124,000 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, and (v) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. F2: 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. |
| Common StockSEC Table I · non-derivative | IndirectBy trusts (excl. GRATs) | 3,713,610 |
Reported balance
Holding disclosure · report date 2026-09-22 · row 7
Holding and transaction disclosures are not merged.
1 source rowRow 7 · Balance 3,713,610 F1: 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 3,713,610 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer"), (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,124,000 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, and (v) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. F2: 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. |
| Common StockSEC Table I · non-derivative | IndirectBy Sujoda Investments, LP | 3,789,479 |
Reported balance
Holding disclosure · report date 2026-09-22 · row 8
Holding and transaction disclosures are not merged.
1 source rowRow 8 · Balance 3,789,479 F1: 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 3,713,610 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer"), (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,124,000 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, and (v) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. F2: 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. F3: 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. |
| Common StockSEC Table I · non-derivative | IndirectBy Sujochil, LP | 19,484,809 |
Reported balance
Holding disclosure · report date 2026-09-22 · row 9
Holding and transaction disclosures are not merged.
1 source rowRow 9 · Balance 19,484,809 F1: 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 3,713,610 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer"), (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,124,000 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, and (v) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. F2: 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. |
Filing footnotes · ownership attribution and instrument terms
F1: 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 3,713,610 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer"), (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,124,000 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, and (v) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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.
F2: 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.
F3: 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.
F4: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 22, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| September 22, 2026 Filed Sep 24, 2026 20:45 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 3.9978 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-063436 · wk-form4_1790282705.xml · derivative · entry 10 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (5) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,619.5144 Underlying: Common Stock · 3.9978 shares Expires not disclosed F4 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 22, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F4 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 22, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F4 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 22, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. Read SEC document |
| June 23, 2026 Filed Jun 25, 2026 20:50 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 2.5166 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-045577 · wk-form4_1782420649.xml · derivative · entry 10 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (5) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,615.5166 Underlying: Common Stock · 2.5166 shares Expires not disclosed F4 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 23, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F4 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 23, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F4 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 23, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. Read SEC document |
| June 12, 2026 Filed Jun 12, 2026 20:36 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantCommon Stock | 9,893 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-042891 · wk-form4_1781296564.xml · nonDerivative · entry 1 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (5) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,120,387 F1 · shares: On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended, and the applicable award agreement. On May 13, 2026, the RSUs, plus an additional 104 dividend equivalent units ("DEUs"), which each represented an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, vested. On June 12, 2026, the RSUs and DEUs converted into common stock of the Issuer on a one-for-one basis. F1 · price: On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended, and the applicable award agreement. On May 13, 2026, the RSUs, plus an additional 104 dividend equivalent units ("DEUs"), which each represented an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, vested. On June 12, 2026, the RSUs and DEUs converted into common stock of the Issuer on a one-for-one basis. Read SEC document |
| May 13, 2026 Filed May 15, 2026 20:44 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 2,613 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-035684 · wk-form4_1778877879.xml · derivative · entry 11 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (6) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,613 Underlying: Common Stock · 2,613 shares Expires not disclosed F5 · derivative.exercise_price: Represents shares of common stock underlying RSUs granted on May 13, 2026 (the "Grant Date") pursuant to the Plan (the "2026 RSUs"). Subject to the terms and conditions of the applicable award agreement, the 2026 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 2026 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer. F5 · derivative.exercise_date: Represents shares of common stock underlying RSUs granted on May 13, 2026 (the "Grant Date") pursuant to the Plan (the "2026 RSUs"). Subject to the terms and conditions of the applicable award agreement, the 2026 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 2026 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer. F5 · derivative.expiration_date: Represents shares of common stock underlying RSUs granted on May 13, 2026 (the "Grant Date") pursuant to the Plan (the "2026 RSUs"). Subject to the terms and conditions of the applicable award agreement, the 2026 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 2026 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer. Read SEC document |
| May 13, 2026 Filed May 15, 2026 20:44 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionRestricted Stock Units · Derivative | 9,893.0573 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-035684 · wk-form4_1778877879.xml · derivative · entry 10 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (6) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 9,893.0573 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: On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2025 RSUs"). In connection with the vesting of the 2025 RSUs on May 13, 2026 (the "Vesting Date"): (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, will convert into common stock of the Issuer on a one-for-one basis within 30 days of the Vesting Date or will otherwise be settled in cash. F4 · derivative.exercise_date: On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2025 RSUs"). In connection with the vesting of the 2025 RSUs on May 13, 2026 (the "Vesting Date"): (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, will convert into common stock of the Issuer on a one-for-one basis within 30 days of the Vesting Date or will otherwise be settled in cash. F4 · derivative.expiration_date: On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2025 RSUs"). In connection with the vesting of the 2025 RSUs on May 13, 2026 (the "Vesting Date"): (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, will convert into common stock of the Issuer on a one-for-one basis within 30 days of the Vesting Date or will otherwise be settled in cash. Read SEC document |
| April 07, 2026 Filed Apr 9, 2026 21:04 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionDirector stock option (right to buy) · Derivative | 20,000 | $0.00 Strike: $5.66 | $0.00 |
DisclosureSEC source: 0001628280-26-024522 · wk-form4_1775768676.xml · derivative · entry 10 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (5) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 20,000 shares Expires 2026-05-04 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_date: This stock option to acquire 20,000 shares of the Issuer's Common Stock was granted on May 4, 2016 and vested in full on May 2, 2017. Read SEC document |
| April 07, 2026 Filed Apr 9, 2026 21:04 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionCommon Stock | 20,000 | $5.66 | $113,200.00 |
DisclosureSEC source: 0001628280-26-024522 · wk-form4_1775768676.xml · nonDerivative · entry 1 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (5) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,110,494 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. Read SEC document |
| March 31, 2026 Filed Apr 2, 2026 22:55 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 18.1563 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-023393 · wk-form4_1775170548.xml · derivative · entry 11 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (6) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 9,893.0573 Underlying: Common Stock · 18.1563 shares Expires not disclosed F5 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on March 31, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F5 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on March 31, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F5 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on March 31, 2026 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. Read SEC document |
| December 26, 2025 Filed Dec 30, 2025 21:39 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 725,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000021 · wk-form4_1767130790.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 own GRATs Disclosed balance after: 1,124,000 F1 · shares: On December 26, 2025, the 2023 Grantor Retained Annuity Trust dated 9/15/2023 distributed 725,000 shares of common stock of Amkor, Inc. (the "Issuer") to the Susan Y. Kim 2023 Family Distribution Trust. The Reporting Person is the trustee of the 2023 Grantor Retained Annuity Trust Dated 9/15/2023. John T. Kim and James J. Kim are co-trustees of the Susan Y. Kim 2023 Family Distribution Trust. F2 · ownership.direct: 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 3,713,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,124,000 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 · ownership.direct: (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) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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 · ownership.direct: 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. Read SEC document |
| December 23, 2025 Filed Dec 24, 2025 00:01 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 20.0093 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000019 · wk-form4_1766534494.xml · derivative · entry 11 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (8) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 9,874.901 Underlying: Common Stock · 20.0093 shares Expires not disclosed F7 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2025 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F7 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2025 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F7 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on December 23, 2025 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. Read SEC document |
| December 19, 2025 Filed Dec 24, 2025 00:01 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 2,538,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000019 · wk-form4_1766534494.xml · nonDerivative · entry 3 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (8) 10b5-1 filing: No plan indicated Ownership: Indirect · 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim Disclosed balance after: 2,538,000 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 3,713,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,849,000 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) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. F5 · balance_after: On December 19, 2025, Agnes C. Kim made a distribution of 2,538,000 shares of common stock of the Issuer to the 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim. The Reporting Person is the sole trustee of the 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim. Read SEC document |
| December 19, 2025 Filed Dec 24, 2025 00:01 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 3,244,594 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000019 · wk-form4_1766534494.xml · nonDerivative · entry 2 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (8) 10b5-1 filing: No plan indicated Ownership: Indirect · 2025 Grantor Retained Annuity Trust No. 1 of James J. Kim Disclosed balance after: 3,244,594 F1 · balance_after: On December 19, 2025, James J. Kim made a distribution of 3,244,594 shares of common stock of the Amkor Technology, Inc. (the "Issuer") to the 2025 Grantor Retained Annuity Trust No. 1 of James J. Kim. The Reporting Person is the sole trustee of the 2025 Grantor Retained Annuity Trust No.1 of James J. Kim. 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 3,713,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 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 1,849,000 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) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. Read SEC document |
| December 04, 2025 Filed Dec 8, 2025 22:52 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 758,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000017 · wk-form4_1765234344.xml · nonDerivative · entry 2 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (6) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,090,494 F1 · balance_after: On December 4, 2025, the Susan Y. Kim 2023 Grantor Retained Annuity Trust dated 9/15/2023 distributed 758,000 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. Read SEC document |
| December 04, 2025 Filed Dec 8, 2025 22:52 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 758,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000017 · wk-form4_1765234344.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 own GRATs Disclosed balance after: 1,849,000 F1 · balance_after: On December 4, 2025, the Susan Y. Kim 2023 Grantor Retained Annuity Trust dated 9/15/2023 distributed 758,000 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 · ownership.direct: 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 3,713,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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 1,849,000 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 · ownership.direct: (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 9, below, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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 · ownership.direct: 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. Read SEC document |
| November 20, 2025 Filed Nov 25, 2025 01:58 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 705,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000015 · wk-form4_1764035907.xml · nonDerivative · entry 5 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Indirect · By trusts (excl. GRATs) Disclosed balance after: 3,713,610 F6 · shares: On November 20, 2025, the 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024 distributed 705,000 shares of the Common Stock of Amkor Technology, Inc (the "Issuer") to the the Agnes C. Kim Revocable Trust, of which Agnes C. Kim is the sole settlor, sole beneficiary, and sole trustee. Susan Y. Kim is the sole trustee of the 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024. F2 · ownership.direct: 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 3,453,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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 2,607,00 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 · ownership.direct: (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 9, below, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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 · ownership.direct: 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. Read SEC document |
| November 20, 2025 Filed Nov 25, 2025 01:58 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantCommon Stock | 965,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000015 · wk-form4_1764035907.xml · nonDerivative · entry 4 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Indirect · By trusts (excl. GRATs) Disclosed balance after: 4,418,610 F5 · shares: On November 20, 2025, the 2024 Grantor Retained Annuity Trust of James J. Kim 8/5/2024 distributed 965,000 shares of the Common Stock of the Issuer to the James J. Kim 2018-1 Qualified Annuity Trust U/A dated 8/30/18. The Reporting Person is the trustee of the 2024 Grantor Retained Annuity Trust of James J. Kim 8/5/2024. The Reporting Person and James J. Kim are co-trustees of the James J. Kim 2018-1 Qualified Annuity Trust U/A dated 8/30/18. F2 · ownership.direct: 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 3,453,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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 2,607,00 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 · ownership.direct: (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 9, below, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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 · ownership.direct: 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. Read SEC document |
| November 20, 2025 Filed Nov 25, 2025 01:58 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 965,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000015 · wk-form4_1764035907.xml · nonDerivative · entry 3 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Indirect · By trusts (excl. GRATs) Disclosed balance after: 3,453,610 F5 · shares: On November 20, 2025, the 2024 Grantor Retained Annuity Trust of James J. Kim 8/5/2024 distributed 965,000 shares of the Common Stock of the Issuer to the James J. Kim 2018-1 Qualified Annuity Trust U/A dated 8/30/18. The Reporting Person is the trustee of the 2024 Grantor Retained Annuity Trust of James J. Kim 8/5/2024. The Reporting Person and James J. Kim are co-trustees of the James J. Kim 2018-1 Qualified Annuity Trust U/A dated 8/30/18. F2 · ownership.direct: 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 3,453,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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 2,607,00 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 · ownership.direct: (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 9, below, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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 · ownership.direct: 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. Read SEC document |
| November 20, 2025 Filed Nov 25, 2025 01:58 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 876,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000015 · wk-form4_1764035907.xml · nonDerivative · entry 2 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Indirect · By own GRATs Disclosed balance after: 2,607,000 F1 · shares: On November 20, 2025, the 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024 distributed 876,000 shares of the Common Stock of Amkor Technology, Inc (the "Issuer") to the Reporting Person. The Reporting Person is the sole trustee of the 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024. Because the Reporting Person is the annuitant and sole trustee of the 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024, the distribution was a mere change in the form of ownership from indirect to direct and thus being voluntarily reported by the Reporting Person on this Form 4. F2 · ownership.direct: 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 3,453,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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 2,607,00 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 · ownership.direct: (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 9, below, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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 · ownership.direct: 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. Read SEC document |
| November 20, 2025 Filed Nov 25, 2025 01:58 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 876,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000015 · wk-form4_1764035907.xml · nonDerivative · entry 1 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,332,494 F1 · shares: On November 20, 2025, the 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024 distributed 876,000 shares of the Common Stock of Amkor Technology, Inc (the "Issuer") to the Reporting Person. The Reporting Person is the sole trustee of the 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024. Because the Reporting Person is the annuitant and sole trustee of the 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024, the distribution was a mere change in the form of ownership from indirect to direct and thus being voluntarily reported by the Reporting Person on this Form 4. Read SEC document |
| September 23, 2025 Filed Sep 25, 2025 20:46 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 27.3648 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-042831 · wk-form4_1758833193.xml · derivative · entry 9 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 9,854.8917 Underlying: Common Stock · 27.3648 shares Expires not disclosed F5 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 23, 2025 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F5 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 23, 2025 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F5 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 23, 2025 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. Read SEC document |
| August 01, 2025 Filed Aug 5, 2025 23:09 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | PurchaseCommon Stock | 441,589 | $21.85 | $9,648,719.65 |
DisclosureSEC source: 0001158922-25-000013 · wk-form4_1754435347.xml · nonDerivative · entry 7 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Indirect · By Sujoda Investments, LP Disclosed balance after: 3,789,479 F8 · shares: On August 1, 2025, James J. Kim distributed 441,589 shares of the Common Stock of the Issuer to Sujoda Investments, LP pursuant to the terms of a transaction between members of the Kim family group. F2 · 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. F9 · balance_after: 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. F5 · ownership.direct: 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 Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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; F6 · ownership.direct: (Continued from Footnote 5) (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 9, below, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. Read SEC document |
| August 01, 2025 Filed Aug 5, 2025 23:09 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 280,001 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000013 · wk-form4_1754435347.xml · nonDerivative · entry 6 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Indirect · By Agnes C. Kim 2023 GRAT dtd. 4/26/23 Disclosed balance after: 0 F7 · shares: On August 1, 2025, the 2023 Grantor Retained Annuity Trust of Agnes C. Kim Dated 4/26/2023 distributed 280,001 shares of the Common Stock of the Issuer to John T. Kim and 280,000 shares of the Common Stock of the Issuer to the Reporting Person. F2 · 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. F7 · balance_after: On August 1, 2025, the 2023 Grantor Retained Annuity Trust of Agnes C. Kim Dated 4/26/2023 distributed 280,001 shares of the Common Stock of the Issuer to John T. Kim and 280,000 shares of the Common Stock of the Issuer to the Reporting Person. F5 · ownership.direct: 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 Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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; F6 · ownership.direct: (Continued from Footnote 5) (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 9, below, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. Read SEC document |
| August 01, 2025 Filed Aug 5, 2025 23:09 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 280,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000013 · wk-form4_1754435347.xml · nonDerivative · entry 5 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Indirect · By Agnes C. Kim 2023 GRAT dtd. 4/26/23 Disclosed balance after: 280,001 F3 · shares: On August 1, 2025 the 2023 Grantor Retained Annuity Trust of Agnes C. Kim Dated 4/26/2023 distributed 280,000 shares of the Common Stock of the Issuer to the Reporting Person. F2 · 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. F7 · balance_after: On August 1, 2025, the 2023 Grantor Retained Annuity Trust of Agnes C. Kim Dated 4/26/2023 distributed 280,001 shares of the Common Stock of the Issuer to John T. Kim and 280,000 shares of the Common Stock of the Issuer to the Reporting Person. F5 · ownership.direct: 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 Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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; F6 · ownership.direct: (Continued from Footnote 5) (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 9, below, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. Read SEC document |
| August 01, 2025 Filed Aug 5, 2025 23:09 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 438,002 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000013 · wk-form4_1754435347.xml · nonDerivative · entry 4 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Indirect · By James J. Kim 2023 GRAT dtd. 4/26/23 Disclosed balance after: 0 F4 · shares: On August 1, 2025, the 2023 Grantor Retained Annuity Trust of James J. Kim Dated 4/26/2023 distributed 438,002 shares of the Common Stock of the Issuer to John T. Kim and 438,002 shares of the Common Stock of the Issuer to the Reporting Person. F2 · 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. F4 · balance_after: On August 1, 2025, the 2023 Grantor Retained Annuity Trust of James J. Kim Dated 4/26/2023 distributed 438,002 shares of the Common Stock of the Issuer to John T. Kim and 438,002 shares of the Common Stock of the Issuer to the Reporting Person. F5 · ownership.direct: 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 Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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; F6 · ownership.direct: (Continued from Footnote 5) (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 9, below, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. Read SEC document |
| August 01, 2025 Filed Aug 5, 2025 23:09 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 438,002 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000013 · wk-form4_1754435347.xml · nonDerivative · entry 3 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Indirect · By James J. Kim 2023 GRAT dtd. 4/26/23 Disclosed balance after: 438,002 F1 · shares: On August 1, 2025 the 2023 Grantor Retained Annuity Trust of James J. Kim Dated 4/26/2023 distributed 438,002 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person. F2 · 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. F4 · balance_after: On August 1, 2025, the 2023 Grantor Retained Annuity Trust of James J. Kim Dated 4/26/2023 distributed 438,002 shares of the Common Stock of the Issuer to John T. Kim and 438,002 shares of the Common Stock of the Issuer to the Reporting Person. F5 · ownership.direct: 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 Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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; F6 · ownership.direct: (Continued from Footnote 5) (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 9, below, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. Read SEC document |
| August 01, 2025 Filed Aug 5, 2025 23:09 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 280,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000013 · wk-form4_1754435347.xml · nonDerivative · entry 2 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,456,494 F3 · shares: On August 1, 2025 the 2023 Grantor Retained Annuity Trust of Agnes C. Kim Dated 4/26/2023 distributed 280,000 shares of the Common Stock of the Issuer to the Reporting Person. F2 · 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. F3 · balance_after: On August 1, 2025 the 2023 Grantor Retained Annuity Trust of Agnes C. Kim Dated 4/26/2023 distributed 280,000 shares of the Common Stock of the Issuer to the Reporting Person. Read SEC document |
| August 01, 2025 Filed Aug 5, 2025 23:09 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 438,002 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000013 · wk-form4_1754435347.xml · nonDerivative · entry 1 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (10) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,176,494 F1 · shares: On August 1, 2025 the 2023 Grantor Retained Annuity Trust of James J. Kim Dated 4/26/2023 distributed 438,002 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person. F2 · 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. Read SEC document |
| July 30, 2025 Filed Aug 1, 2025 20:42 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 1,738,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000011 · wk-form4_1754080916.xml · nonDerivative · entry 2 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (6) 10b5-1 filing: No plan indicated Ownership: Indirect · By Agnes C. Kim 2023 GRAT dtd. 4/26/23 Disclosed balance after: 560,001 F5 · shares: On July 30, the 2023 Grantor Retained Annuity Trust of Agnes C. Kim Dated 4/26/2023 distributed 1,738,000 shares of the Issuer's Common Stock to Agnes C. Kim. The Reporting Person is the sole 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 Common Stock of Amkor Technology, Inc. (the "Issuer"); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 5,236,005 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 4, a member of Sujoda Management, LLC, which indirectly owns 3,347,890 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. Read SEC document |
| July 30, 2025 Filed Aug 1, 2025 20:42 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 2,711,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-25-000011 · wk-form4_1754080916.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 2023 GRAT dtd. 4/26/23 Disclosed balance after: 876,004 F1 · shares: On July 30, 2025 the 2023 Grantor Retained Annuity Trust of James J. Kim Dated 4/26/2023 distributed 2,711,000 of the Issuer's Common Stock to James J. Kim. The Reporting Person is the sole 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 Common Stock of Amkor Technology, Inc. (the "Issuer"); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 5,236,005 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 4, a member of Sujoda Management, LLC, which indirectly owns 3,347,890 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. Read SEC document |
| June 25, 2025 Filed Jun 27, 2025 21:47 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 38.5269 | $0.00 | $0.00 |
DisclosureSEC source: 0001047127-25-000137 · wk-form4_1751060835.xml · derivative · entry 11 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (6) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 9,827.5269 Underlying: Common Stock · 38.5269 shares Expires not disclosed F5 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 25, 2025 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F5 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 25, 2025 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. F5 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 25, 2025 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. Read SEC document |
| May 15, 2025 Filed May 16, 2025 20:31 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 9,789 | $0.00 | $0.00 |
DisclosureSEC source: 0001047127-25-000104 · wk-form4_1747427456.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: 9,789 Underlying: Common Stock · 9,789 shares Expires not disclosed F6 · derivative.exercise_price: Represents shares of common stock underlying RSUs granted on May 15, 2025 (the "Grant Date") pursuant to the Plan (the "2025 RSUs"). Subject to the terms and conditions of the applicable award agreement, the 2025 RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The 2025 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer. F6 · derivative.exercise_date: Represents shares of common stock underlying RSUs granted on May 15, 2025 (the "Grant Date") pursuant to the Plan (the "2025 RSUs"). Subject to the terms and conditions of the applicable award agreement, the 2025 RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The 2025 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer. F6 · derivative.expiration_date: Represents shares of common stock underlying RSUs granted on May 15, 2025 (the "Grant Date") pursuant to the Plan (the "2025 RSUs"). Subject to the terms and conditions of the applicable award agreement, the 2025 RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The 2025 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer. Read SEC document |
| May 14, 2025 Filed May 16, 2025 20:31 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionRestricted Stock Units · Derivative | 6,017.0342 | $0.00 | $0.00 |
DisclosureSEC source: 0001047127-25-000104 · wk-form4_1747427456.xml · derivative · entry 11 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: 0 Underlying: Common Stock · 6,017.0342 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: On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2024 RSUs"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis. F1 · shares: On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2024 RSUs"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis. F1 · derivative.exercise_date: On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2024 RSUs"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis. F1 · derivative.expiration_date: On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2024 RSUs"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis. F1 · derivative.underlying_shares: On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2024 RSUs"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis. Read SEC document |
| May 14, 2025 Filed May 16, 2025 20:31 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionCommon Stock | 6,017 | $0.00 | $0.00 |
DisclosureSEC source: 0001047127-25-000104 · wk-form4_1747427456.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: Direct Disclosed balance after: 3,738,492 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 · shares: On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2024 RSUs"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis. F1 · price: On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2024 RSUs"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis. F1 · balance_after: On May 14, 2024, the Reporting Person was granted 5,855 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2024 RSUs"). In connection with the vesting of the 2024 RSUs on May 14, 2025: (i) 0.0342 of the 2024 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2024 RSUs, including 162 DEUs, converted into common stock of the Issuer on a one-for-one basis. Read SEC document |
| April 02, 2025 Filed Apr 4, 2025 20:28 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 25.9877 | $0.00 | $0.00 |
DisclosureSEC source: 0001047127-25-000080 · wk-form4_1743798493.xml · derivative · entry 11 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (6) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,017.0342 Underlying: Common Stock · 25.9877 shares Expires not disclosed F5 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on April 2, 2025 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. F5 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on April 2, 2025 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. F5 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on April 2, 2025 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. Read SEC document |
| February 24, 2025 Filed Feb 26, 2025 22:16 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | PurchaseCommon Stock | 869,565 | $21.85 | $18,999,995.25 |
DisclosureSEC source: 0001158922-25-000006 · wk-form4_1740608153.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 Sujoda Investments, LP Disclosed balance after: 3,347,890 F1 · shares: 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. F2 · balance_after: 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. F3 · 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 9,685,005 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; F4 · balance_after: (Continued from Footnote 3) (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 2, a member of Sujoda Management, LLC, which indirectly owns 3,347,890 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. F5 · 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. Read SEC document |
| January 17, 2025 Filed Jan 22, 2025 22:03 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 274,000 | $0.00 | $0.00 |
DisclosureSEC 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. Read SEC document |
| January 17, 2025 Filed Jan 22, 2025 22:03 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 548,000 | $0.00 | $0.00 |
DisclosureSEC 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. Read SEC document |
| January 07, 2025 Filed Jan 10, 2025 22:21 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 790,019 | $0.00 | $0.00 |
DisclosureSEC 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. Read SEC document |
| December 23, 2024 Filed Dec 26, 2024 18:07 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 108.7979 | $0.00 | $0.00 |
DisclosureSEC 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. Read SEC document |
| December 23, 2024 Filed Dec 26, 2024 18:07 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 1,017,000 | $0.00 | $0.00 |
DisclosureSEC 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. Read SEC document |
| December 23, 2024 Filed Dec 26, 2024 18:07 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 1,017,000 | $0.00 | $0.00 |
DisclosureSEC 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. Read SEC document |
| November 21, 2024 Filed Nov 22, 2024 21:33 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionDirector stock option (right to buy) · Derivative | 20,000 | $0.00 Strike: $6.81 | $0.00 |
DisclosureSEC source: 0001047127-24-000207 · wk-form4_1732311221.xml · derivative · entry 14 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: 0 Underlying: Common Stock · 20,000 shares Expires 2025-05-05 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. F6 · derivative.exercise_date: This stock option to acquire 20,000 shares of the Issuer's Common Stock was granted on May 5, 2015 and vested in full on May 4, 2016. Read SEC document |
| November 21, 2024 Filed Nov 22, 2024 21:33 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionDirector stock option (right to buy) · Derivative | 5,000 | $0.00 Strike: $8.92 | $0.00 |
DisclosureSEC source: 0001047127-24-000207 · wk-form4_1732311221.xml · derivative · entry 13 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: 0 Underlying: Common Stock · 5,000 shares Expires 2025-02-12 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. F5 · derivative.exercise_date: This stock option to acquire 5,000 shares of the Issuer's Common Stock was granted on February 12, 2015 and vested in full on March 5, 2015. Read SEC document |
| November 21, 2024 Filed Nov 22, 2024 21:33 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionCommon Stock | 20,000 | $6.81 | $136,200.00 |
DisclosureSEC source: 0001047127-24-000207 · wk-form4_1732311221.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: 2,441,475 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. Read SEC document |
| November 21, 2024 Filed Nov 22, 2024 21:33 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionCommon Stock | 5,000 | $8.92 | $44,600.00 |
DisclosureSEC source: 0001047127-24-000207 · wk-form4_1732311221.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: Direct Disclosed balance after: 2,421,475 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. Read SEC document |
| September 23, 2024 Filed Sep 25, 2024 21:33 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 14.864 | $0.00 | $0.00 |
DisclosureSEC source: 0001047127-24-000195 · wk-form4_1727299973.xml · derivative · entry 13 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: 5,882.2486 Underlying: Common Stock · 14.864 shares Expires not disclosed F6 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 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 September 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 September 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. Read SEC document |
| August 08, 2024 Filed Aug 12, 2024 21:24 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 1,600,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-24-000006 · wk-form4_1723497890.xml · nonDerivative · entry 2 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (8) 10b5-1 filing: No plan indicated Ownership: Indirect · By Agnes C. Kim 2024 GRAT dtd. 8/5/24 Disclosed balance after: 1,600,000 F5 · shares: On August 8, 2024, Agnes C. Kim transferred 1,600,000 shares of the Issuer's Common Stock to the 2024 Grantor Retained Annuity Trust of Agnes C. Kim dtd. 8/5/2024 as a gift. The Reporting Person is the sole 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 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 4,500,000 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; (vi) as referenced in Footnote 7, a member of Sujoda Management, LLC, which indirectly owns 2,478,325 shares of the Issuer's Common Stock and (vii) a general partner of a limited partnership which owns 39,594,980 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. Read SEC document |
| August 08, 2024 Filed Aug 12, 2024 21:24 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 2,200,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-24-000006 · wk-form4_1723497890.xml · nonDerivative · entry 1 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (8) 10b5-1 filing: No plan indicated Ownership: Indirect · By James J. Kim 2024 GRAT dtd. 8/5/24 Disclosed balance after: 2,200,000 F1 · shares: On August 8, 2024, James J. Kim transferred 2,200,000 shares of Common Stock of Amkor Technology, Inc. (the "Issuer") to the 2024 Grantor Retained Annuity Trust of James J. Kim dtd. 8/5/2024 as a gift. The Reporting Person is the sole 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 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 4,500,000 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; (vi) as referenced in Footnote 7, a member of Sujoda Management, LLC, which indirectly owns 2,478,325 shares of the Issuer's Common Stock and (vii) a general partner of a limited partnership which owns 39,594,980 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. Read SEC document |
| June 24, 2024 Filed Jun 26, 2024 21:38 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantRestricted Stock Units · Derivative | 12.3846 | $0.00 | $0.00 |
DisclosureSEC source: 0001047127-24-000135 · wk-form4_1719437924.xml · derivative · entry 11 KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Member of 10% owner group (6) 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,867.3846 Underlying: Common Stock · 12.3846 shares Expires not disclosed F5 · derivative.exercise_price: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 24, 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. F5 · derivative.exercise_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 24, 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. F5 · derivative.expiration_date: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 24, 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. Read SEC document |
| June 12, 2024 Filed Jun 14, 2024 22:08 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GiftCommon Stock | 980,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001158922-24-000004 · wk-form4_1718402866.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: Indirect · By Agnes C. Kim 2023 GRAT dtd. 4/26/23 Disclosed balance after: 2,298,001 F5 · shares: On June 12, 2024, the 2023 Grantor Retained Annuity Trust of Agnes C. Kim Dated 4/26/2023 distributed 980,000 shares of the Issuer's Common Stock to Agnes C. Kim. The Reporting Person is the sole trustee of the trust. F2 · 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. F3 · 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 7,223,102 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 2,500,000 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; F4 · balance_after: (Continued from Footnote 3) (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; (vi) as referenced in Footnote 6, a member of Sujoda Management, LLC, which indirectly owns 2,478,325 shares of the Issuer's Common Stock and (vii) a general partner of a limited partnership which owns 39,594,980 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. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.