AMKR

SEC source: 0000899243-19-003689 · doc5.xml · nonDerivative · entry 1

John T. Kim 2012 Irrevocable Trust · CIK 0001565301 · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: On April 4, 2018, the John T. Kim 2012 Irrevocable Trust U/A dated 12/11/12 transferred 2,138,382 shares of the Issuer's Common Stock to John T. Kim. John T. Kim and James J. Kim are co-trustees.

SEC source: 0000899243-19-003647 · doc5.xml · nonDerivative · entry 3

KIM JAMES J · CIK 0001158839 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 14,489,497

F2 · kind: On April 4, 2018, the John T. Kim 2012 Irrevocable Trust U/A dated 12/11/12 transferred 2,138,382 shares of the Issuer's Common Stock to John T. Kim. John T. Kim and James J. Kim are co-trustees.

F9 · 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, or for any other purpose.

SEC source: 0000899243-19-003640 · doc5.xml · nonDerivative · entry 6

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,674,640

F3 · kind: On April 4, 2018, the John T. Kim 2012 Irrevocable Trust U/A dated 12/11/12 transferred 2,138,382 shares of the Issuer's Common Stock to John T. Kim. John T. Kim and James J. Kim are co-trustees.

F7 · 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, or for any other purpose.

SEC source: 0000899243-19-003640 · doc5.xml · nonDerivative · entry 5

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 48,593,506

F3 · kind: On April 4, 2018, the John T. Kim 2012 Irrevocable Trust U/A dated 12/11/12 transferred 2,138,382 shares of the Issuer's Common Stock to John T. Kim. John T. Kim and James J. Kim are co-trustees.

F7 · 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, or for any other purpose.

SEC source: 0000899243-19-008826 · doc5a.xml · nonDerivative · entry 6

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,814,245

F3 · kind: On April 4, 2018, the John T. Kim 2012 Irrevocable Trust U/A dated 12/11/12 transferred 2,138,382 shares of the Issuer's Common Stock to John T. Kim. John T. Kim and James J. Kim are co-trustees.

F7 · 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, or for any other purpose.

F8 · balance_after: This Form 5 amends the Form 5 filed by the reporting person on February 14, 2019. This amendment is to correct the direct holdings of the reporting person only. For readability, the entire filing is being amended but only those line item noted with footnote 8 have been changed, and solely to update the direct holdings in Column 5.

SEC source: 0000899243-19-008826 · doc5a.xml · nonDerivative · entry 5

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 48,593,506

F3 · kind: On April 4, 2018, the John T. Kim 2012 Irrevocable Trust U/A dated 12/11/12 transferred 2,138,382 shares of the Issuer's Common Stock to John T. Kim. John T. Kim and James J. Kim are co-trustees.

F7 · 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, or for any other purpose.

SEC source: 0000899243-19-003710 · doc5.xml · nonDerivative · entry 1

John T. Kim 2018 Irrevocable Trust Agreement Dated 2/6/18 · CIK 0001732522 · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,789,775

F1 · kind: On March 23, 2018, John T. Kim transferred 1,789,775 shares of the Issuer's Common Stock to the Qualified Annuity Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18. Susan Y. Kim and John T. Kim are co-trustees.

SEC source: 0000899243-19-003646 · doc5.xml · nonDerivative · entry 4

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 34,581,825

F3 · kind: On March 23, 2018, John T. Kim transferred 1,789,775 shares of the Issuer's Common Stock to the Qualified Annuity Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18. Susan Y. Kim and John T. Kim are co-trustees.

F10 · 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, or for any other purpose.

SEC source: 0000899243-19-003640 · doc5.xml · nonDerivative · entry 4

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 48,593,506

F2 · kind: On March 23, 2018, John T. Kim transferred 1,789,775 shares of the Issuer's Common Stock to the Qualified Annuity Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18. Susan Y. Kim and John T. Kim are co-trustees.

F7 · 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, or for any other purpose.

SEC source: 0000899243-19-003640 · doc5.xml · nonDerivative · entry 3

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,674,640

F2 · kind: On March 23, 2018, John T. Kim transferred 1,789,775 shares of the Issuer's Common Stock to the Qualified Annuity Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18. Susan Y. Kim and John T. Kim are co-trustees.

F7 · 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, or for any other purpose.

SEC source: 0000899243-19-008826 · doc5a.xml · nonDerivative · entry 4

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 48,593,506

F2 · kind: On March 23, 2018, John T. Kim transferred 1,789,775 shares of the Issuer's Common Stock to the Qualified Annuity Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18. Susan Y. Kim and John T. Kim are co-trustees.

F7 · 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, or for any other purpose.

SEC source: 0000899243-19-008826 · doc5a.xml · nonDerivative · entry 3

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,814,245

F2 · kind: On March 23, 2018, John T. Kim transferred 1,789,775 shares of the Issuer's Common Stock to the Qualified Annuity Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18. Susan Y. Kim and John T. Kim are co-trustees.

F7 · 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, or for any other purpose.

F8 · balance_after: This Form 5 amends the Form 5 filed by the reporting person on February 14, 2019. This amendment is to correct the direct holdings of the reporting person only. For readability, the entire filing is being amended but only those line item noted with footnote 8 have been changed, and solely to update the direct holdings in Column 5.

SEC source: 0000899243-19-003685 · doc5.xml · nonDerivative · entry 1

Susan Y. Kim 2012 Irrevocable Trust · CIK 0001566755 · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: On March 13, 2018, the Susan Y. Kim 2012 Irrevocable Trust U/A dated 7/26/12 distributed 2,779,777 shares to the Susan Y. Kim Family Trust under the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12. Susan Y. Kim and John T. Kim are co-trustees.

SEC source: 0000899243-19-003660 · doc5.xml · nonDerivative · entry 1

Family Trust Under the Susan Y. Kim 2012 Irrevocable Trust Dated 7/26/12 · CIK 0001728273 · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,779,777

F1 · kind: On March 13, 2018, the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12 distributed 2,779,777 shares to the Susan Y. Kim Family Trust under the Susan Y. Kim 2012 Irrevocable Trust U/A dated 7/26/12. Susan Y. Kim and John T. Kim are co-trustees.

SEC source: 0000899243-19-003646 · doc5.xml · nonDerivative · entry 3

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 34,581,825

F2 · kind: On March 13, 2018, the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12 distributed 2,779,777 shares to the Susan Y. Kim Family Trust under the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12. Susan Y. Kim and John T. Kim are co-trustees.

F10 · 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, or for any other purpose.

SEC source: 0000899243-19-003646 · doc5.xml · nonDerivative · entry 2

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 34,581,825

F2 · kind: On March 13, 2018, the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12 distributed 2,779,777 shares to the Susan Y. Kim Family Trust under the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12. Susan Y. Kim and John T. Kim are co-trustees.

F10 · 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, or for any other purpose.

SEC source: 0000899243-19-003640 · doc5.xml · nonDerivative · entry 2

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 48,593,506

F1 · kind: On March 13, 2018, the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12 distributed 2,779,777 shares to the Susan Y. Kim Family Trust under the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12. Susan Y. Kim and John T. Kim are co-trustees.

F7 · 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, or for any other purpose.

SEC source: 0000899243-19-003640 · doc5.xml · nonDerivative · entry 1

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 48,593,506

F1 · kind: On March 13, 2018, the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12 distributed 2,779,777 shares to the Susan Y. Kim Family Trust under the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12. Susan Y. Kim and John T. Kim are co-trustees.

F7 · 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, or for any other purpose.

SEC source: 0000899243-19-008826 · doc5a.xml · nonDerivative · entry 2

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 48,593,506

F1 · kind: On March 13, 2018, the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12 distributed 2,779,777 shares to the Susan Y. Kim Family Trust under the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12. Susan Y. Kim and John T. Kim are co-trustees.

F7 · 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, or for any other purpose.

SEC source: 0000899243-19-008826 · doc5a.xml · nonDerivative · entry 1

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 48,593,506

F1 · kind: On March 13, 2018, the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12 distributed 2,779,777 shares to the Susan Y. Kim Family Trust under the Susan Y. Kim 2012 Irrevocable Trust dated 7/26/12. Susan Y. Kim and John T. Kim are co-trustees.

F7 · 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, or for any other purpose.

SEC source: 0001209191-18-018947 · doc4.xml · derivative · entry 9

CHURCHILL WINSTON J · CIK 0000923792 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Amkor Technology, Inc. · 20,000 shares

Expires 2025-05-05

SEC source: 0001209191-18-018947 · doc4.xml · derivative · entry 8

CHURCHILL WINSTON J · CIK 0000923792 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Amkor Technology, Inc. · 20,000 shares

Expires 2023-05-08

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.

SEC source: 0001209191-18-018947 · doc4.xml · derivative · entry 7

CHURCHILL WINSTON J · CIK 0000923792 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Amkor Technology, Inc. · 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.

SEC source: 0001209191-18-018947 · doc4.xml · nonDerivative · entry 6

CHURCHILL WINSTON J · CIK 0000923792 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,776

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 11.35 to 11.39.

SEC source: 0001209191-18-018947 · doc4.xml · nonDerivative · entry 5

CHURCHILL WINSTON J · CIK 0000923792 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,776

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.

SEC source: 0001209191-18-018947 · doc4.xml · nonDerivative · entry 4

CHURCHILL WINSTON J · CIK 0000923792 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,776

F1 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 11.34 to 11.39.

SEC source: 0001209191-18-018947 · doc4.xml · nonDerivative · entry 3

CHURCHILL WINSTON J · CIK 0000923792 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,776

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.

SEC source: 0001209191-18-018947 · doc4.xml · nonDerivative · entry 2

CHURCHILL WINSTON J · CIK 0000923792 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,776

F1 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 11.34 to 11.39.

SEC source: 0001209191-18-018947 · doc4.xml · nonDerivative · entry 1

CHURCHILL WINSTON J · CIK 0000923792 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,776

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.

SEC source: 0001209191-18-014225 · doc4.xml · nonDerivative · entry 1

Kelley Stephen Douglas · CIK 0001443674 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 185,025

SEC source: 0000899243-19-003647 · doc5.xml · nonDerivative · entry 2

KIM JAMES J · CIK 0001158839 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,621,203

F1 · kind: On February 21, 2018, the James J. Kim 2014 Qualified Annuity Trust U/A dated 10/13/14 distributed 63,880 shares to James J. Kim. James J. Kim and Susan Y. Kim are co- trustees.

F9 · 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, or for any other purpose.

SEC source: 0000899243-19-003647 · doc5.xml · nonDerivative · entry 1

KIM JAMES J · CIK 0001158839 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 14,489,497

F1 · kind: On February 21, 2018, the James J. Kim 2014 Qualified Annuity Trust U/A dated 10/13/14 distributed 63,880 shares to James J. Kim. James J. Kim and Susan Y. Kim are co- trustees.

F9 · 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, or for any other purpose.

SEC source: 0000899243-19-003646 · doc5.xml · nonDerivative · entry 1

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 34,581,825

F1 · kind: On February 21, 2018, the James J. Kim 2014 Qualified Annuity Trust U/A dated 10/13/14 distributed 63,880 shares to James J. Kim. James J. Kim and Susan Y. Kim are co-trustees.

F10 · 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, or for any other purpose.

SEC source: 0000899243-19-003642 · doc5.xml · nonDerivative · entry 1

James J. Kim 2014 Qualified Annuity Trust · CIK 0001631983 · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 233,315

F1 · kind: On February 21, 2018, the James J. Kim 2014 Qualified Annuity Trust U/A dated 10/13/14 distributed 63,880 shares to James J. Kim. James J. Kim and Susan Y. Kim are co- trustees of the trust.

SEC source: 0001209191-18-008333 · doc4.xml · derivative · entry 2

McCourt MaryFrances · CIK 0001730724 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,657

Underlying: Common Stock · 4,657 shares

Expires 2028-02-06

F2 · derivative.exercise_date: These options vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date, subject to continued service through the applicable date.

SEC source: 0001209191-18-008333 · doc4.xml · nonDerivative · entry 1

McCourt MaryFrances · CIK 0001730724 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 985

F1 · shares: These are restricted shares which vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date, subject to continued service through the applicable date.

SEC source: 0001209191-18-008329 · doc4.xml · derivative · entry 2

ALEXANDER DOUGLAS A · CIK 0001195858 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,657

Underlying: Common Stock · 4,657 shares

Expires 2028-02-06

F2 · derivative.exercise_date: These options vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date, subject to continued service through the applicable date.

SEC source: 0001209191-18-008329 · doc4.xml · nonDerivative · entry 1

ALEXANDER DOUGLAS A · CIK 0001195858 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 985

F1 · shares: These are restricted shares which vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date, subject to continued service through the applicable date.

SEC source: 0001209191-17-062673 · doc4.xml · nonDerivative · entry 1

Kelley Stephen Douglas · CIK 0001443674 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 190,450

SEC source: 0000899243-18-003808 · doc5.xml · nonDerivative · entry 6

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,804,501

F4 · kind: On November 15, 2017, the Susan Y. Kim 2012 Irrevocable Trust dated July 26, 2012 distributed 1,661,294 shares to Susan Y. Kim. Susan Y. Kim and John T. Kim are co-trustees.

SEC source: 0000899243-18-003808 · doc5.xml · nonDerivative · entry 5

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 32,166,663

F4 · kind: On November 15, 2017, the Susan Y. Kim 2012 Irrevocable Trust dated July 26, 2012 distributed 1,661,294 shares to Susan Y. Kim. Susan Y. Kim and John T. Kim are co-trustees.

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, or for any other purpose.

SEC source: 0000899243-18-003803 · doc5.xml · nonDerivative · entry 4

KIM JOHN T · CIK 0001158926 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 49,153,956

F3 · kind: On November 15, 2017, the Susan Y. Kim 2012 Irrevocable Trust dated July 26, 2012 distributed 1,661,294 shares to Susan Y. Kim. Susan Y. Kim and John T. Kim are co-trustees.

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, or for any other purpose.

SEC source: 0000899243-18-003802 · doc5.xml · nonDerivative · entry 1

Susan Y. Kim 2012 Irrevocable Trust · CIK 0001566755 · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,779,777

F1 · kind: On November 15, 2017, the Susan Y. Kim 2012 Irrevocable Trust dated July 26, 2012 distributed 1,661,294 shares to Susan Y. Kim. Susan Y. Kim and John T. Kim are co-trustees.

SEC source: 0001209191-17-062673 · doc4.xml · derivative · entry 2

Kelley Stephen Douglas · CIK 0001443674 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Amkor Technology, Inc. Common Stock · 18,164 shares

Expires 2023-05-08

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: Reflects the November 3, 2017 exercise of 18,164 employee stock options at the direction of Mr. Kelley's ex-spouse pursuant to the terms of a qualified domestic relations order. Mr. Kelley's ex-spouse will retain all proceeds from the sales.

F2 · derivative.exercise_date: The option grant vests as follows: 25% of the shares vest on the first anniversary of the grant date, and 1/16th vest quarterly thereafter such that 100% of the option will be vested on the fourth anniversary of the grant date.

SEC source: 0000899243-18-003808 · doc5.xml · nonDerivative · entry 4

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 32,166,663

F3 · kind: On September 11, 2017, the James J. Kim 2013 Qualified Annuity Trust U/A Dated 5/17/13 distributed 686,108 shares of the Company's Common Stock to James J. Kim. James J. Kim and Susan Y. Kim are co-trustees.

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, or for any other purpose.

SEC source: 0000899243-18-003799 · doc5.xml · nonDerivative · entry 5

KIM JAMES J · CIK 0001158839 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,301,250

F3 · kind: On September 11, 2017, the James J. Kim 2013 Qualified Annuity Trust U/A Dated 5/17/13 distributed 686,108 shares of the Company's Common Stock to James J. Kim. James J. Kim and Susan Y. Kim are co-trustees.

SEC source: 0000899243-18-003799 · doc5.xml · nonDerivative · entry 4

KIM JAMES J · CIK 0001158839 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Indirect · By self as trustee

Disclosed balance after: 15,442,042

F3 · kind: On September 11, 2017, the James J. Kim 2013 Qualified Annuity Trust U/A Dated 5/17/13 distributed 686,108 shares of the Company's Common Stock to James J. Kim. James J. Kim and Susan Y. Kim are co-trustees.

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, or for any other purpose.

SEC source: 0000899243-18-003795 · doc5.xml · nonDerivative · entry 1

James J. Kim 2013 Qualified Annuity Trust U/A Dated May 17, 2013 · CIK 0001579612 · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,220,433

F1 · kind: On September 11, 2017, the James J. Kim 2013 Qualified Annuity Trust U/A Dated 5/17/13 distributed 686,108 shares of the Company's Common Stock to James J. Kim. James J. Kim and Susan Y. Kim are co-trustees.

SEC source: 0001209191-17-050483 · doc4.xml · nonDerivative · entry 1

Kelley Stephen Douglas · CIK 0001443674 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 196,200

SEC source: 0000899243-18-003808 · doc5.xml · nonDerivative · entry 3

KIM SUSAN Y · CIK 0001158922 · Director · 10% owner · Exhibit 99.1

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,804,501

F2 · kind: On August 11, 2017, the Susan Y. Kim 2015 Irrevocable Trust U/A Dated March 16, 2015 distributed 480,540 shares of the Company's Common Stock to Susan Y. Kim. Susan Y. Kim and John T. Kim are co-trustees.