Steven B. Ketchum - 31 Jan 2026 Form 4 Insider Report for AMARIN CORP PLC\UK (AMRN)

Role
EVP, Chief Scientific Officer
Signature
/s/ Jonathan Provoost, by power of attorney
Issuer symbol
AMRN
Transactions as of
31 Jan 2026
Net transactions value
-$35,420
Form type
4
Filing time
03 Feb 2026, 19:00:05 UTC
Previous filing
06 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Ketchum Steven B EVP, Chief Scientific Officer C/O AMARIN PHARMA, INC., 440 US HIGHWAY 22, BRIDGEWATER /s/ Jonathan Provoost, by power of attorney 03 Feb 2026 0001289884

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMRN American Depositary Shares Options Exercise +2,246 +5.8% 41,243 31 Jan 2026 Direct F1, F2, F3
transaction AMRN American Depositary Shares Tax liability $19,044 -1,235 -3% $15.42 40,008 31 Jan 2026 Direct F1, F4
transaction AMRN American Depositary Shares Options Exercise +1,933 +4.8% 41,941 31 Jan 2026 Direct F1, F3, F5
transaction AMRN American Depositary Shares Tax liability $16,376 -1,062 -2.5% $15.42 40,879 31 Jan 2026 Direct F1, F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction AMRN Restricted Stock Unit Options Exercise $0 +2,246 $0.000000 0 31 Jan 2026 American Depositary Shares 2,246 $0.000000 Direct F1, F2, F3, F6
transaction AMRN Restricted Stock Unit Options Exercise $0 +1,933 $0.000000 1,933 31 Jan 2026 American Depositary Shares 1,933 $0.000000 Direct F1, F3, F5, F6
transaction AMRN Restricted Stock Unit Award $0 +8,013 $0.000000 8,013 01 Feb 2026 American Depositary Shares 8,013 $0.000000 Direct F1, F3, F7
transaction AMRN Stock Option (right to buy) Award $0 +36,060 $0.000000 36,060 01 Feb 2026 American Depositary Shares 36,060 $14.99 Direct F1, F8
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Effective April 11, 2025, the Issuer implemented a ratio change that one (1) American Depositary Share ("ADS") currently represents twenty (20) Ordinary Shares ("ADS Ratio Change"). Proportionate adjustments were made to the Issuer's outstanding equity awards. The amount of securities reported on this Form 4 reflect the ADS Ratio Change.
F2 On February 21, 2023, the Reporting Person was granted 6,740 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2020 Stock Incentive Plan (the "Plan"). These RSUs vest in three equal installments on each of January 31, 2024, January 31, 2025 and January 31, 2026.
F3 Not applicable.
F4 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 On February 1, 2024, the Reporting Person was granted 5,800 RSUs under the Plan. These RSUs vest in three equal installments on each of January 31, 2025, January 31, 2026 and January 31, 2027.
F6 Each RSU represents a contingent right to receive twenty Ordinary Shares or cash in lieu thereof at the Issuer's discretion.
F7 On February 1, 2026, the Reporting Person was granted 8,013 RSUs under the Plan. These RSUs vest in three equal installments on each of January 31, 2027, January 31, 2028 and January 31, 2029.
F8 On February 1, 2026, the Reporting Person was granted an option to purchase 36,060 ADSs under the Plan. The shares subject to this option shall vest and become exercisable over three years, with 33% to vest on the first anniversary of the grant date and the balance to vest ratably over the subsequent 8 calendar quarters on the first day of each May, August, November and February.