Amarin EVP reports RSU vesting and tax withholding

Amarin Corporation EVP and Chief Legal Officer Jonathan Provoost reported equity compensation activity dated July 1, 2026.

Rhea-AI Filing Summary

Amarin Corporation EVP and Chief Legal Officer Jonathan Provoost reported equity compensation activity dated July 1, 2026. He acquired 3,688 American Depositary Shares (ADS) in connection with Restricted Stock Units (RSUs), while 1,264 ADS were withheld to cover tax obligations, which the company notes is not a market sale. The disclosure also references RSU awards, including a 7,376-unit grant vesting in two tranches in 2026, with each RSU representing a contingent right to receive twenty ordinary shares or cash.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Provoost Jonathan

Role EVP, Chief Legal Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Unit F5, F1, F2, F3	3,688	$0.00	$0.00
Exercise	American Depositary Shares F1, F2, F3	3,688	--	--
Tax Withholding	American Depositary Shares F1, F4	1,264	$15.94	$20K

Holdings After Transaction: Restricted Stock Unit — 0 contracts (Direct); American Depositary Shares — 4,624 shares (Direct)

Footnotes (5)

1. 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.
2. F2. 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. F3. Not applicable.
4. 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.
5. F5. Each RSU represents a contingent right to receive twenty Ordinary Shares or cash in lieu thereof at the Issuer's discretion.

Key Figures

RSU-related ADS acquired: 3,688 American Depositary Shares ADS withheld for taxes: 1,264 American Depositary Shares RSU grant size: 7,376 Restricted Stock Units +4 more

7 metrics

RSU-related ADS acquired 3,688 American Depositary Shares ADS acquired through RSU-related exercise/conversion on July 1, 2026

ADS withheld for taxes 1,264 American Depositary Shares Shares withheld by Amarin to cover tax liability on July 1, 2026

RSU grant size 7,376 Restricted Stock Units RSUs granted on January 10, 2025 under the 2020 Stock Incentive Plan

RSU vesting dates January 2, 2026 and July 1, 2026 Two vesting tranches for the 7,376 RSUs (50% on each date)

ADS to Ordinary Share ratio 1 ADS = 20 Ordinary Shares ADS Ratio Change effective April 11, 2025

Ordinary shares per RSU 20 Ordinary Shares per RSU Each RSU is a contingent right to receive twenty ordinary shares or cash

Tax withholding price $15.94 per ADS Price per share for 1,264 ADS withheld for taxes on July 1, 2026

Key Terms

American Depositary Shares, Restricted Stock Unit, Rule 16b-3, ADS Ratio Change, +1 more

5 terms

American Depositary Shares financial

"One American Depositary Share currently represents twenty Ordinary Shares after the ADS Ratio Change"

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

Restricted Stock Unit financial

"The Reporting Person was granted 7,376 Restricted Stock Units under the 2020 Stock Incentive Plan"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

Rule 16b-3 regulatory

"Represents withholding of shares for tax liability incident to vesting in accordance with Rule 16b-3"

Rule 16b-3 is a Securities and Exchange Commission regulation that exempts certain routine, pre-approved transactions by company insiders from automatic liability for short-term trading profits. It acts like a safe harbor: if an insider follows a formal plan or the board approves specific transactions in advance, profits from buying and selling company stock within six months are not automatically reclaimed. Investors care because the rule clarifies when insider trades are permissible and reduces uncertainty about potential clawbacks.

ADS Ratio Change financial

"The Issuer implemented a ratio change so one ADS represents twenty Ordinary Shares ("ADS Ratio Change")"

An ads ratio change is an adjustment to how many American Depositary Shares (ADS) represent one unit of a foreign company’s ordinary shares — like changing whether a cake is cut into 2 or 10 slices. Investors care because it alters the number of tradable ADS, the implied price per ADS and an investor’s ownership stake, which can affect liquidity, perceived value and comparisons of holdings across markets.

contingent right financial

"Each RSU represents a contingent right to receive twenty Ordinary Shares or cash"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did AMRN executive Jonathan Provoost report on July 1, 2026?

Jonathan Provoost reported RSU-related equity activity, acquiring 3,688 American Depositary Shares and having 1,264 ADS withheld for taxes. The filing also references a 7,376-unit RSU grant that vests in two stages during 2026 under Amarin’s stock incentive plan.

Were any of Jonathan Provoost’s AMRN shares sold on the open market in this Form 4?

No open-market sale is reported. The 1,264 ADS shown as a disposition were withheld by Amarin for tax liability tied to RSU vesting and are explicitly described as not a market sale of securities under Rule 16b-3.

How many Restricted Stock Units are associated with Jonathan Provoost’s AMRN compensation plan?

A prior grant of 7,376 Restricted Stock Units (RSUs) is referenced. Under that grant, 50% vest on January 2, 2026 and the remaining 50% vest on July 1, 2026, reflecting an eighteen‑month vesting schedule under Amarin’s 2020 Stock Incentive Plan.

How were taxes handled for Jonathan Provoost’s AMRN RSU vesting?

Amarin withheld 1,264 ADS to satisfy Jonathan Provoost’s tax liability related to RSU vesting. A footnote clarifies this was issuer withholding under Rule 16b-3, not a discretionary open-market sale of shares by the executive.

What do Amarin’s ADS and RSUs represent in ordinary shares for AMRN?

Following an ADS Ratio Change, one American Depositary Share equals twenty ordinary shares. Each RSU represents a contingent right to receive twenty ordinary shares, or cash in lieu, at Amarin’s discretion, tying equity awards directly to ordinary share value.

What vesting schedule applies to Jonathan Provoost’s 7,376 RSUs at AMRN?

The 7,376 RSUs granted on January 10, 2025 vest over eighteen months: 50% vest on January 2, 2026, and the remaining 50% vest on July 1, 2026, subject to the terms of Amarin’s 2020 Stock Incentive Plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/15/2026 - 05:00 PM Learn about SEC filing dates

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
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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^*

Provoost Jonathan

(Last) (First) (Middle)

C/O AMARIN PHARMA, INC.

440 US HIGHWAY 22

(Street)

BRIDGEWATER NEW JERSEY 08807

(City) (State) (Zip)

UNITED STATES

(Country)

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 Legal Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

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

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

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

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)	07/01/2026		M(2)		3,688(1)	A	(3)	5,888(1)	D
American Depositary Shares(1)	07/01/2026		F(4)		1,264(1)	D	$15.94	4,624(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	07/01/2026		A		3,688(1)		(2)	(3)	American Depositary Shares(1)	3,688(1)	$0.00	0(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	07/01/2026
	** 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.
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* Form 4: SEC 1474 (03-26)