Amarin (NASDAQ: AMRN) COO reports RSU vesting and share withholding

Rhea-AI Filing Summary

Amarin Corporation’s EVP and Chief Operating Officer, Keenan David Paul, reported routine equity compensation activity. On January 2, 2026, 3,688 Restricted Stock Units vested into the right to receive American Depositary Shares at an exercise price of $0.00. These were reflected as 3,688 American Depositary Shares acquired through an option exercise transaction.

To cover tax obligations related to the vesting, the company withheld 1,926 American Depositary Shares at a price of $13.96 per share, which the filing notes was not a market sale. After these transactions, the executive directly owned 9,712 American Depositary Shares and 3,688 RSUs. The filing also reminds investors that one ADS currently represents twenty ordinary shares following an earlier ADS ratio change.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Keenan David Paul

(Last) (First) (Middle)

C/O AMARIN PHARMA, INC.

440 US HIGHWAY 22

(Street)

BRIDGEWATER NJ 08807

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
AMARIN CORP PLC\UK [ AMRN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Operating Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/02/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
American Depositary Shares(1)	01/02/2026		M(2)		3,688(1)	A	(3)	11,638(1)	D
American Depositary Shares(1)	01/02/2026		F(4)		1,926(1)	D	$13.96	9,712(1)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit(5)	$0	01/02/2026		A		3,688(1)		(2)	(3)	American Depositary Shares(1)	3,688(1)	$0.00	3,688(1)	D

Explanation of Responses:

1. 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.

2. On January 10, 2025, the Reporting Person was granted 7,376 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2020 Stock Incentive Plan (the "Plan"). The shares subject to this grant shall vest over eighteen months, with 50% to vest on January 2, 2026 and the remaining balance to vest on July 1, 2026.

3. Not applicable.

4. 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.

5. Each RSU represents a contingent right to receive twenty Ordinary Shares or cash in lieu thereof at the Issuer's discretion.

	/s/ Jonathan Provoost, by power of attorney	01/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider activity did Amarin (AMRN) report in this Form 4?

The filing reports that EVP and Chief Operating Officer Keenan David Paul had 3,688 Restricted Stock Units vest into American Depositary Shares on January 2, 2026, along with related share withholding for taxes.

How many Amarin American Depositary Shares did the executive acquire and at what price?

The executive acquired 3,688 American Depositary Shares through an option exercise coded as transaction "M" at an exercise price of $0.00 per share, reflecting the vesting of equity awards rather than an open-market purchase.

How many Amarin shares were withheld for taxes in this transaction?

The company withheld 1,926 American Depositary Shares coded as transaction "F" at a price of $13.96 per share to satisfy tax liabilities related to the vesting, and this is described as not a market sale of securities.

What are the executive’s Amarin holdings after the reported Form 4 transactions?

Following the reported transactions, the executive directly owned 9,712 American Depositary Shares and 3,688 Restricted Stock Units, according to the totals shown for beneficial ownership in the filing.

How many ordinary shares does each Amarin American Depositary Share represent?

The filing states that, effective April 11, 2025, one American Depositary Share represents twenty ordinary shares, and outstanding equity awards were proportionately adjusted to reflect this ADS ratio change.

What does each Amarin Restricted Stock Unit represent under the incentive plan?

Each Restricted Stock Unit represents a contingent right to receive twenty ordinary shares or cash in lieu of shares at the company’s discretion, consistent with the description in the footnotes.