AMRN

SEC source: 0001562180-20-004106 · primarydocument.xml · derivative · entry 5

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,914

Underlying: Ordinary Shares · 1,528 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.

F7 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-004106 · primarydocument.xml · derivative · entry 4

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,914

Underlying: Ordinary Shares · 1,528 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.

F7 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-004106 · primarydocument.xml · nonDerivative · entry 3

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,185

F1 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F5 · kind: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

F6 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-004106 · primarydocument.xml · nonDerivative · entry 2

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,683

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-004106 · primarydocument.xml · nonDerivative · entry 1

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,155

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

F4 · balance_after: Includes 584 shares purchased under the Issuer's 2017 Employee Stock Purchase Plan on May 29, 2020.

SEC source: 0001562180-20-004105 · primarydocument.xml · derivative · entry 5

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,914

Underlying: Ordinary Shares · 1,528 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-004105 · primarydocument.xml · derivative · entry 4

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,914

Underlying: Ordinary Shares · 1,528 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-004105 · primarydocument.xml · nonDerivative · entry 3

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 520,662

F1 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F4 · kind: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

F5 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-004105 · primarydocument.xml · nonDerivative · entry 2

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 522,168

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-004105 · primarydocument.xml · nonDerivative · entry 1

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 520,640

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-004103 · primarydocument.xml · derivative · entry 5

THERO JOHN F · CIK 0001199637 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 101,041

Underlying: Ordinary Shares · 6,736 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-004103 · primarydocument.xml · derivative · entry 4

THERO JOHN F · CIK 0001199637 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 101,041

Underlying: Ordinary Shares · 6,736 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-004103 · primarydocument.xml · nonDerivative · entry 3

THERO JOHN F · CIK 0001199637 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,504,951

F1 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F4 · kind: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

F5 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-004103 · primarydocument.xml · nonDerivative · entry 2

THERO JOHN F · CIK 0001199637 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,510,253

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-004103 · primarydocument.xml · nonDerivative · entry 1

THERO JOHN F · CIK 0001199637 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,503,517

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-004104 · primarydocument.xml · derivative · entry 5

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,081

Underlying: Ordinary Shares · 1,805 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-004104 · primarydocument.xml · derivative · entry 4

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,081

Underlying: Ordinary Shares · 1,805 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-004104 · primarydocument.xml · nonDerivative · entry 3

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,535

F1 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F4 · kind: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

F5 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-004104 · primarydocument.xml · nonDerivative · entry 2

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 202,437

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-004104 · primarydocument.xml · nonDerivative · entry 1

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,632

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twenty-first vesting event occurred on May 29, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-003253 · primarydocument.xml · derivative · entry 8

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,000

Underlying: Ordinary Shares · 26,000 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.

F7 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F5 · derivative.exercise_date: On May 1, 2018, the Reporting Person was granted 78,000 RSUs under the Plan. These RSUs vest in three equal installments on each of May 1, 2019, May 1, 2020, and May 1, 2021. The second vesting event occurred on May 1, 2020.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003253 · primarydocument.xml · nonDerivative · entry 5

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 205,200

F1 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F4 · kind: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

F6 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-003253 · primarydocument.xml · nonDerivative · entry 4

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 218,005

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F5 · kind: On May 1, 2018, the Reporting Person was granted 78,000 RSUs under the Plan. These RSUs vest in three equal installments on each of May 1, 2019, May 1, 2020, and May 1, 2021. The second vesting event occurred on May 1, 2020.

F3 · price: Not applicable.

SEC source: 0001562180-20-003253 · primarydocument.xml · derivative · entry 7

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,442

Underlying: Ordinary Shares · 1,528 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.

F7 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003253 · primarydocument.xml · derivative · entry 6

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,442

Underlying: Ordinary Shares · 1,528 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.

F7 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003253 · primarydocument.xml · nonDerivative · entry 3

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 192,005

F1 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F4 · kind: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

SEC source: 0001562180-20-003253 · primarydocument.xml · nonDerivative · entry 2

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 193,511

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-003253 · primarydocument.xml · nonDerivative · entry 1

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 191,983

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-003252 · primarydocument.xml · derivative · entry 5

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,442

Underlying: Ordinary Shares · 1,528 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003252 · primarydocument.xml · derivative · entry 4

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,442

Underlying: Ordinary Shares · 1,528 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003252 · primarydocument.xml · nonDerivative · entry 3

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,043

F1 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F4 · kind: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

F5 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-003252 · primarydocument.xml · nonDerivative · entry 2

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,541

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-003252 · primarydocument.xml · nonDerivative · entry 1

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,013

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-003251 · primarydocument.xml · derivative · entry 5

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,442

Underlying: Ordinary Shares · 1,528 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003251 · primarydocument.xml · derivative · entry 4

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,442

Underlying: Ordinary Shares · 1,528 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003251 · primarydocument.xml · nonDerivative · entry 3

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 519,112

F1 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F4 · kind: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

F5 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-003251 · primarydocument.xml · nonDerivative · entry 2

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 520,618

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-003251 · primarydocument.xml · nonDerivative · entry 1

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 519,090

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-003250 · primarydocument.xml · derivative · entry 5

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,886

Underlying: Ordinary Shares · 1,805 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003250 · primarydocument.xml · derivative · entry 4

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,886

Underlying: Ordinary Shares · 1,805 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003250 · primarydocument.xml · nonDerivative · entry 3

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 198,827

F1 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F4 · kind: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

F5 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-003250 · primarydocument.xml · nonDerivative · entry 2

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,729

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-003250 · primarydocument.xml · nonDerivative · entry 1

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 198,924

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-003249 · primarydocument.xml · derivative · entry 5

THERO JOHN F · CIK 0001199637 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 107,777

Underlying: Ordinary Shares · 6,736 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003249 · primarydocument.xml · derivative · entry 4

THERO JOHN F · CIK 0001199637 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 107,777

Underlying: Ordinary Shares · 6,736 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-003249 · primarydocument.xml · nonDerivative · entry 3

THERO JOHN F · CIK 0001199637 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,496,781

F1 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F4 · kind: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

F5 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-003249 · primarydocument.xml · nonDerivative · entry 2

THERO JOHN F · CIK 0001199637 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,502,083

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-003249 · primarydocument.xml · nonDerivative · entry 1

THERO JOHN F · CIK 0001199637 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,495,347

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 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2 · kind: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The twentieth vesting event occurred on April 30, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · price: Not applicable.

SEC source: 0001562180-20-002871 · primarydocument.xml · derivative · entry 5

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,970

Underlying: Ordinary Shares · 1,528 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The nineteenth vesting event occurred on March 31, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001562180-20-002871 · primarydocument.xml · derivative · entry 4

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,970

Underlying: Ordinary Shares · 1,528 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.

F6 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F2 · derivative.exercise_date: As previously reported on February 27, 2020, on May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc Stock Incentive Plan (the "Plan"), of which the performance criteria related to two tranches representing 50% of the total award was deemed achieved on February 25, 2020 pursuant to reporting of audited net product revenues for 2019 exceeding $400 million. The tranches vest ratably over 36 months beginning September 30, 2018 subject to achievement of the performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. The nineteenth vesting event occurred on March 31, 2020. The performance criteria related to the remaining 50% tranche has not yet been achieved; such tranche has not lapsed as a result of achieving the other two tranches.

F3 · derivative.expiration_date: Not applicable.

F1 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.