AMRN

SEC source: 0001562180-20-000883 · primarydocument.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,533,365

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

F6 · 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.

F7 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-000883 · primarydocument.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,657,652

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 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 · price: Not applicable.

SEC source: 0001562180-20-000883 · primarydocument.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,585,618

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.

F4 · kind: 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 · price: Not applicable.

SEC source: 0001562180-20-000883 · primarydocument.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,461,951

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 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 · price: Not applicable.

SEC source: 0001562180-20-000882 · primarydocument.xml · derivative · entry 7

Kennedy Joseph T · CIK 0001408920 · General Counsel

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.

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 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: 0001562180-20-000882 · primarydocument.xml · derivative · entry 6

Kennedy Joseph T · CIK 0001408920 · General Counsel

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.

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 78,000 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: 0001562180-20-000882 · primarydocument.xml · derivative · entry 5

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 36,000 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.

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 108,000 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: 0001562180-20-000882 · primarydocument.xml · nonDerivative · entry 4

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 160,825

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

F6 · 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.

F7 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-000882 · primarydocument.xml · nonDerivative · entry 3

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,457

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 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: 0001562180-20-000882 · primarydocument.xml · nonDerivative · entry 2

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 187,723

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, 2018, the Reporting Person was granted 78,000 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 · price: Not applicable.

SEC source: 0001562180-20-000882 · primarydocument.xml · nonDerivative · entry 1

Kennedy Joseph T · CIK 0001408920 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 161,723

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 108,000 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: 0001562180-20-000881 · primarydocument.xml · derivative · entry 7

Ketchum Steven B · CIK 0001289884 · Chief Scientific 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.

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 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: 0001562180-20-000881 · primarydocument.xml · derivative · entry 6

Ketchum Steven B · CIK 0001289884 · Chief Scientific 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.

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 78,000 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: 0001562180-20-000881 · primarydocument.xml · derivative · entry 5

Ketchum Steven B · CIK 0001289884 · Chief Scientific 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.

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 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: 0001562180-20-000881 · primarydocument.xml · nonDerivative · entry 4

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 488,100

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

F6 · 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.

F7 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-000881 · primarydocument.xml · nonDerivative · entry 3

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 521,703

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 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: 0001562180-20-000881 · primarydocument.xml · nonDerivative · entry 2

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 508,969

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, 2018, the Reporting Person was granted 78,000 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 · price: Not applicable.

SEC source: 0001562180-20-000881 · primarydocument.xml · nonDerivative · entry 1

Ketchum Steven B · CIK 0001289884 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 482,969

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: 0001562180-20-000880 · primarydocument.xml · derivative · entry 7

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

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.

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 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: 0001562180-20-000880 · primarydocument.xml · derivative · entry 6

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

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.

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 78,000 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: 0001562180-20-000880 · primarydocument.xml · derivative · entry 5

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

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.

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 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: 0001562180-20-000880 · primarydocument.xml · nonDerivative · entry 4

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,861

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

F6 · 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.

F7 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001562180-20-000880 · primarydocument.xml · nonDerivative · entry 3

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,286

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 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: 0001562180-20-000880 · primarydocument.xml · nonDerivative · entry 2

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 76,552

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, 2018, the Reporting Person was granted 78,000 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 · price: Not applicable.

SEC source: 0001562180-20-000880 · primarydocument.xml · nonDerivative · entry 1

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,552

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: 0001209191-20-001469 · doc4.xml · derivative · entry 3

Zakrzewski Joseph S · CIK 0001331852 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Ordinary Shares · 300,000 shares

Expires 2020-11-11

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

F5 · derivative.exercise_date: The stock option granted to the Reporting Person is fully vested as of the date hereof.

F2 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001209191-20-001469 · doc4.xml · nonDerivative · entry 2

Zakrzewski Joseph S · CIK 0001331852 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,547

F1 · security: The option exercises and sale transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.71 to $21.22, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · balance_after: Please see the section title "Remarks" below for additional information.

SEC source: 0001209191-20-001469 · doc4.xml · nonDerivative · entry 1

Zakrzewski Joseph S · CIK 0001331852 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 384,547

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 option exercises and sale transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001209191-19-061212 · doc4.xml · derivative · entry 3

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 43,253 shares

Expires 2022-12-02

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

F5 · derivative.exercise_date: The shares subject to this option are fully vested as of the date hereof.

F2 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents on Ordinary Share.

SEC source: 0001209191-19-061212 · doc4.xml · nonDerivative · entry 2

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 133,806

F1 · security: The option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents on Ordinary Share.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.31 to $25.674, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001209191-19-061212 · doc4.xml · nonDerivative · entry 1

Berg Aaron · CIK 0001770259 · CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 177,059

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 option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents on Ordinary Share.

SEC source: 0001209191-19-061213 · doc4.xml · derivative · entry 3

Zakrzewski Joseph S · CIK 0001331852 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 138,542

Underlying: Ordinary Shares · 100,000 shares

Expires 2021-10-20

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

F5 · derivative.exercise_date: The stock option granted to the Reporting Person is fully vested as of the date hereof.

F2 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001209191-19-061213 · doc4.xml · nonDerivative · entry 2

Zakrzewski Joseph S · CIK 0001331852 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,547

F1 · security: The option exercises and sale transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.80 to $25.90, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · balance_after: Please see the section title "Remarks" below for additional information.

SEC source: 0001209191-19-061213 · doc4.xml · nonDerivative · entry 1

Zakrzewski Joseph S · CIK 0001331852 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 184,547

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 option exercises and sale transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001209191-19-061211 · doc4.xml · derivative · entry 6

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 150,000

Underlying: Ordinary Shares · 25,000 shares

Expires 2026-07-01

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 · derivative.exercise_date: On July 1, 2016, the Reporting Person was granted an option to purchase 625,000 Ordinary Shares under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). The shares subject to this option shall vest as follows: 25% of the total number of underlying shares shall vest on July 1, 2017, and the remaining 75% of the underlying shares shall vest ratably over the subsequent 36 months.

F2 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001209191-19-061211 · doc4.xml · nonDerivative · entry 5

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,552

F1 · security: The option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F7 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001209191-19-061211 · doc4.xml · nonDerivative · entry 4

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,652

F1 · security: The option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.47 to $25.14, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001209191-19-061211 · doc4.xml · nonDerivative · entry 3

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,652

F1 · security: The option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.46 to $24.45, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001209191-19-061211 · doc4.xml · nonDerivative · entry 2

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,152

F1 · security: The option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.42 to $23.41, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001209191-19-061211 · doc4.xml · nonDerivative · entry 1

Kalb Michael Wayne · CIK 0001678248 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,552

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 option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F3 · balance_after: Includes 712 shares purchased under the Issuer's 2017 Employee Stock Purchase Plan on November 29, 2019.

SEC source: 0001209191-19-057691 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,342,285

F1 · security: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted in 2017 by the Reporting Person in accordance with the requirements for such plans described in the Company's Annual Report on Form 10-K.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.38 to $23.20, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001209191-19-056488 · doc4.xml · derivative · entry 3

Ekman Lars · CIK 0001376117 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Ordinary Shares · 38,600 shares

Expires 2022-07-10

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

F4 · derivative.exercise_date: The stock option granted to the Reporting Person is fully vested as of the date hereof.

F2 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001209191-19-056488 · doc4.xml · nonDerivative · entry 2

Ekman Lars · CIK 0001376117 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · security: The option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F3 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001209191-19-056488 · doc4.xml · nonDerivative · entry 1

Ekman Lars · CIK 0001376117 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,600

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 option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001209191-19-056486 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,616,739

F1 · security: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted in 2017 by the Reporting Person in accordance with the requirements for such plans described in the Company's Annual Report on Form 10-K.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.72 to $17.975, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001209191-19-056486 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,658,480

F1 · security: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted in 2017 by the Reporting Person in accordance with the requirements for such plans described in the Company's Annual Report on Form 10-K.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.72 to $17.69, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

F4 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001209191-19-055751 · doc4.xml · derivative · entry 3

Ekman Lars · CIK 0001376117 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,600

Underlying: Ordinary Shares · 6,400 shares

Expires 2022-07-10

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

F4 · derivative.exercise_date: The stock option granted to the Reporting Person is fully vested as of the date hereof.

F2 · derivative.underlying: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001209191-19-055751 · doc4.xml · nonDerivative · entry 2

Ekman Lars · CIK 0001376117 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · security: The option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F3 · balance_after: Please see the section titled "Remarks" below for additional information.

SEC source: 0001209191-19-055751 · doc4.xml · nonDerivative · entry 1

Ekman Lars · CIK 0001376117 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,400

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 option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · security: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

SEC source: 0001209191-19-054568 · doc4.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 363,400

Underlying: Ordinary Shares · 11,601 shares

Expires 2025-07-06

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

F3 · derivative.exercise_date: The stock option granted to the Reporting Person is fully vested as of the date hereof.

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