Peter L. Fishman - 01 Aug 2025 Form 4 Insider Report for AMARIN CORP PLC\UK (AMRN)

Role: SVP, CFO
Signature: /s/ Jonathan Provoost, by power of attorney
Issuer symbol: AMRN
Transactions as of: 01 Aug 2025
Net transactions value: -$2,323
Form type: 4
Filing time: 04 Aug 2025, 17:00:06 UTC
Previous filing: 09 Apr 2025
Next filing: 06 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Fishman Peter L.	SVP, CFO	C/O AMARIN PHARMA, INC., 440 US HIGHWAY 22, BRIDGEWATER	/s/ Jonathan Provoost, by power of attorney	04 Aug 2025	0002042862

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMRN	American Depositary Share	Options Exercise		+312	+8.1%		4,148	01 Aug 2025	Direct	F1, F2, F3
transaction	AMRN	American Depositary Share	Tax liability	$2,323	-160	-3.9%	$14.52	3,988	01 Aug 2025	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	Award	$0	+312	+31200%	$0.000000	313	01 Aug 2025	American Depositary Shares	312	$0.000000	Direct	F1, F2, F3, F5

* 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 August 8, 2022, the Reporting Person was granted 1,250 RSUs under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs vest in four equal installments on each of August 1, 2023, August 1, 2024, August 1, 2025, and August 1, 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	Each RSU represents a contingent right to receive twenty Ordinary Shares or cash in lieu thereof at the Issuer's discretion.