AMRN

SEC source: 0001562180-20-002058 · primarydocument.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,685,743

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 total revenue 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 eighteenth vesting event occurred on February 28, 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: 0001562180-20-002058 · primarydocument.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,679,007

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 total revenue 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 eighteenth vesting event occurred on February 28, 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: 0001562180-20-001801 · primarydocument.xml · derivative · entry 7

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,026

Underlying: Ordinary Shares · 25,974 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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001801 · primarydocument.xml · derivative · entry 6

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,000

Underlying: Ordinary Shares · 55,000 shares

Expires not disclosed

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001801 · primarydocument.xml · derivative · entry 5

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,026

Underlying: Ordinary Shares · 25,974 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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001801 · primarydocument.xml · derivative · entry 4

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,000

Underlying: Ordinary Shares · 55,000 shares

Expires not disclosed

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001801 · primarydocument.xml · nonDerivative · entry 3

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 187,355

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: 0001562180-20-001801 · primarydocument.xml · nonDerivative · entry 2

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 212,941

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001801 · primarydocument.xml · nonDerivative · entry 1

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 186,967

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001800 · primarydocument.xml · derivative · entry 7

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,026

Underlying: Ordinary Shares · 25,974 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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001800 · primarydocument.xml · derivative · entry 6

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,000

Underlying: Ordinary Shares · 55,000 shares

Expires not disclosed

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001800 · primarydocument.xml · derivative · entry 5

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,026

Underlying: Ordinary Shares · 25,974 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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001800 · primarydocument.xml · derivative · entry 4

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,000

Underlying: Ordinary Shares · 55,000 shares

Expires not disclosed

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001800 · primarydocument.xml · nonDerivative · entry 3

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 82,369

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: 0001562180-20-001800 · primarydocument.xml · nonDerivative · entry 2

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 107,809

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001800 · primarydocument.xml · nonDerivative · entry 1

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,835

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001799 · primarydocument.xml · derivative · entry 7

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,026

Underlying: Ordinary Shares · 25,974 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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001799 · primarydocument.xml · derivative · entry 6

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,000

Underlying: Ordinary Shares · 55,000 shares

Expires not disclosed

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001799 · primarydocument.xml · derivative · entry 5

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,026

Underlying: Ordinary Shares · 25,974 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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001799 · primarydocument.xml · derivative · entry 4

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,000

Underlying: Ordinary Shares · 55,000 shares

Expires not disclosed

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001799 · primarydocument.xml · nonDerivative · entry 3

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 514,462

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: 0001562180-20-001799 · primarydocument.xml · nonDerivative · entry 2

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 540,048

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001799 · primarydocument.xml · nonDerivative · entry 1

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 514,074

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: On May 15, 2017, the Reporting Person was granted 220,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 25,974 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001797 · primarydocument.xml · derivative · entry 7

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 127,985

Underlying: Ordinary Shares · 114,515 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: On May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 114,515 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001797 · primarydocument.xml · derivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 242,500

Underlying: Ordinary Shares · 242,500 shares

Expires not disclosed

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: On May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 114,515 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001797 · primarydocument.xml · derivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 127,985

Underlying: Ordinary Shares · 114,515 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: On May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 114,515 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001797 · primarydocument.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 242,500

Underlying: Ordinary Shares · 242,500 shares

Expires not disclosed

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: On May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 114,515 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001797 · primarydocument.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,672,271

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: 0001562180-20-001797 · primarydocument.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,762,395

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: On May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 114,515 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001797 · primarydocument.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,647,880

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: On May 15, 2017, the Reporting Person was granted 970,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 114,515 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001798 · primarydocument.xml · derivative · entry 7

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,303

Underlying: Ordinary Shares · 30,697 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: On May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 30,697 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001798 · primarydocument.xml · derivative · entry 6

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Ordinary Shares · 65,000 shares

Expires not disclosed

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: On May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 30,697 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001798 · primarydocument.xml · derivative · entry 5

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,303

Underlying: Ordinary Shares · 30,697 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: On May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 30,697 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001798 · primarydocument.xml · derivative · entry 4

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Ordinary Shares · 65,000 shares

Expires not disclosed

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: On May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 30,697 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001798 · primarydocument.xml · nonDerivative · entry 3

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 189,895

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: 0001562180-20-001798 · primarydocument.xml · nonDerivative · entry 2

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 222,219

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: On May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 30,697 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-001798 · primarydocument.xml · nonDerivative · entry 1

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 191,522

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: On May 15, 2017, the Reporting Person was granted 260,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs consist of three tranches representing 25%, 25% and 50% of the total award. Each tranche vests ratably over 36 months beginning Sept. 30, 2018 subject to achievement of certain prespecified performance criteria and continued employment of the Reporting Person as provided in the RSU Award Agreement between the Issuer and Reporting Person. On Feb. 25, 2020, pursuant to reporting of audited net total revenue for 2019 exceeding $400 million, the performance criteria related to both 25% tranches was deemed to be achieved, resulting in the vesting of 30,697 RSUs per tranche. The remaining RSUs in these two tranches will continue to vest over 19 monthly installments. The performance criteria related to the 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: 0001562180-20-000879 · primarydocument.xml · derivative · entry 6

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 96,500

Underlying: Ordinary Shares · 96,500 shares

Expires 2030-02-03

F8 · derivative.exercise_date: On February 3, 2020, the Reporting Person was granted an option to purchase 96,500 Ordinary Shares under the Plan. The shares subject to this option shall vest and become exercisable in 16 equal quarterly installments starting on April 30, 2020.

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

SEC source: 0001562180-20-000883 · primarydocument.xml · derivative · entry 8

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 350,700

Underlying: Ordinary Shares · 350,700 shares

Expires 2030-02-03

F9 · derivative.exercise_date: On February 3, 2020, the Reporting Person was granted an option to purchase 350,700 Ordinary Shares under the Plan. The shares subject to this option shall vest and become exercisable in 16 equal quarterly installments starting on April 30, 2020.

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

SEC source: 0001562180-20-000882 · primarydocument.xml · derivative · entry 8

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 96,500

Underlying: Ordinary Shares · 96,500 shares

Expires 2030-02-03

F9 · derivative.exercise_date: On February 3, 2020, the Reporting Person was granted an option to purchase 96,500 Ordinary Shares under the Plan. The shares subject to this option shall vest and become exercisable in 16 equal quarterly installments starting on April 30, 2020.

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

SEC source: 0001562180-20-000881 · primarydocument.xml · derivative · entry 8

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 96,500

Underlying: Ordinary Shares · 96,500 shares

Expires 2030-02-03

F9 · derivative.exercise_date: On February 3, 2020, the Reporting Person was granted an option to purchase 96,500 Ordinary Shares under the Plan. The shares subject to this option shall vest and become exercisable in 16 equal quarterly installments starting on April 30, 2020.

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

SEC source: 0001562180-20-000880 · primarydocument.xml · derivative · entry 8

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 96,500

Underlying: Ordinary Shares · 96,500 shares

Expires 2030-02-03

F9 · derivative.exercise_date: On February 3, 2020, the Reporting Person was granted an option to purchase 96,500 Ordinary Shares under the Plan. The shares subject to this option shall vest and become exercisable in 16 equal quarterly installments starting on April 30, 2020.

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

SEC source: 0001562180-20-000879 · primarydocument.xml · derivative · entry 5

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,466

Underlying: Ordinary Shares · 12,734 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.

F4 · derivative.exercise_date: On February 1, 2019, the Reporting Person was granted 38,200 RSUs under the Plan. These RSUs vest in three equal installments on each of January 31, 2020, January 31, 2021, and January 31, 2022. The first vesting event occurred on January 31, 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: 0001562180-20-000879 · primarydocument.xml · derivative · entry 4

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 29,000 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.

F2 · derivative.exercise_date: On February 1, 2017, the Reporting Person was granted 87,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs vest in three equal installments on each of January 31, 2018, January 31, 2019, and January 31, 2020. The third and final vesting event occurred on January 31, 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: 0001562180-20-000879 · primarydocument.xml · nonDerivative · entry 3

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 160,993

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: 0001562180-20-000879 · primarydocument.xml · nonDerivative · entry 2

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 175,540

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.

F4 · kind: On February 1, 2019, the Reporting Person was granted 38,200 RSUs under the Plan. These RSUs vest in three equal installments on each of January 31, 2020, January 31, 2021, and January 31, 2022. The first vesting event occurred on January 31, 2020.

F3 · price: Not applicable.

SEC source: 0001562180-20-000879 · primarydocument.xml · nonDerivative · entry 1

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162,806

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: On February 1, 2017, the Reporting Person was granted 87,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs vest in three equal installments on each of January 31, 2018, January 31, 2019, and January 31, 2020. The third and final vesting event occurred on January 31, 2020.

F3 · price: Not applicable.

SEC source: 0001562180-20-000883 · primarydocument.xml · derivative · entry 7

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 144,066

Underlying: Ordinary Shares · 72,034 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.

F8 · 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 February 1, 2019, the Reporting Person was granted 216,100 RSUs under the Plan. These RSUs vest in three equal installments on each of January 31, 2020, January 31, 2021, and January 31, 2022. The first vesting event occurred on January 31, 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: 0001562180-20-000883 · primarydocument.xml · derivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,666

Underlying: Ordinary Shares · 123,667 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.

F8 · security: Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F4 · derivative.exercise_date: On February 1, 2018, the Reporting Person was granted 371,000 RSUs under the Plan. These RSUs vest in three equal installments on each of January 31, 2019, January 31, 2020, and January 31, 2021. The second vesting event occurred on January 31, 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: 0001562180-20-000883 · primarydocument.xml · derivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 119,666 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.

F8 · 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: On February 1, 2017, the Reporting Person was granted 359,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs vest in three equal installments on each of January 31, 2018, January 31, 2019, and January 31, 2020. The third and final vesting event occurred on January 31, 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.