STOCK TITAN
  1. Home
  2. Sec-filings
  3. AMRN
  4. [Form 4] AMARIN CORP PLC\UK Insider Trading Activity

Amarin (AMRN) COO Keenan details RSU vesting and ADS tax withholding

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Amarin Corporation executive David Paul Keenan, EVP and Chief Operating Officer, reported equity-compensation activity in American Depositary Shares (ADSs) tied to vesting of Restricted Stock Units granted on 10 January 2025. On 1 July 2026, 1,926 ADSs were withheld to satisfy taxes and 3,688 RSUs linked to ADSs were reported. After these transactions he directly holds 15,396 ADSs.

Positive

  • None.

Negative

  • None.
Insider Keenan David Paul
Role EVP, Chief Operating Officer
Type Security Shares Price Value
Grant/Award Restricted Stock Unit 3,688 $0.00 --
Exercise American Depositary Shares 3,688 -- --
Tax Withholding American Depositary Shares 1,926 $15.94 $31K
Holdings After Transaction: Restricted Stock Unit — 0 shares (Direct); American Depositary Shares — 15,396 shares (Direct)
Footnotes (1)
  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. 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. Not applicable. 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. Each RSU represents a contingent right to receive twenty Ordinary Shares or cash in lieu thereof at the Issuer's discretion.
Tax-withheld ADSs 1,926 American Depositary Shares Shares withheld to cover tax liability on 1 July 2026 vesting
ADS holdings after transactions 15,396 American Depositary Shares Direct ADS position of David Paul Keenan following 1 July 2026 activity
RSUs reported in transaction 3,688 Restricted Stock Units RSUs linked to ADSs reported on 1 July 2026
Original RSU grant size 7,376 Restricted Stock Units Grant made on 10 January 2025 under the 2020 Stock Incentive Plan
ADS to Ordinary Share ratio 1 ADS = 20 Ordinary Shares Ratio effective after 11 April 2025 ADS Ratio Change
American Depositary Shares financial
"Security title reported as American Depositary Shares representing Amarin equity"
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 Units financial
"Reporting person was granted 7,376 Restricted Stock Units under the 2020 Plan"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
ADS Ratio Change financial
"Issuer implemented an ADS Ratio Change so one ADS represents twenty Ordinary Shares"
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.
Rule 16b-3 regulatory
"Tax withholding occurred incident to vesting of a security issued 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.
Amarin Corporation plc 2020 Stock Incentive Plan financial
"RSUs were granted under the Amarin Corporation plc 2020 Stock Incentive Plan"

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
Form 4 Insider Transactions: What Each Field Means →

FAQ

What insider transactions did Amarin (AMRN) EVP David Paul Keenan report on July 1, 2026?
David Paul Keenan reported equity activity tied to RSU vesting, including 1,926 ADSs withheld to cover taxes and 3,688 RSUs linked to American Depositary Shares. After these transactions, he directly held 15,396 ADSs in Amarin.

How many Amarin (AMRN) American Depositary Shares were withheld for taxes from David Paul Keenan’s award?
The report shows that 1,926 American Depositary Shares were withheld by Amarin to satisfy tax liabilities associated with the vesting of equity awards. Footnote language clarifies this was not a market sale but an issuer withholding under Rule 16b-3.

What Restricted Stock Unit grant is referenced in David Paul Keenan’s AMRN Form 4 filing?
Footnotes state that Keenan was granted 7,376 Restricted Stock Units on 10 January 2025 under the Amarin Corporation plc 2020 Stock Incentive Plan. These RSUs vest over eighteen months, with the final tranche scheduled to vest on July 1, 2026.

How many Amarin (AMRN) ADSs does David Paul Keenan hold after the reported transactions?
Following the July 1, 2026 equity-compensation transactions, David Paul Keenan directly holds 15,396 American Depositary Shares of Amarin. This figure reflects his direct ADS position after the tax withholding and RSU-related activity reported in the Form 4.

What does each Amarin (AMRN) RSU represent after the ADS Ratio Change?
Each Restricted Stock Unit reported represents a contingent right to receive twenty Ordinary Shares or cash, at Amarin’s discretion. This follows the ADS Ratio Change under which one ADS equals twenty Ordinary Shares, and equity awards were adjusted proportionately.

How were Amarin (AMRN) equity awards affected by the ADS Ratio Change mentioned in the filing?
Effective April 11, 2025, Amarin implemented an ADS Ratio Change so one ADS represents twenty Ordinary Shares. Footnotes explain that proportionate adjustments were made to all outstanding equity awards, and the share amounts reported already reflect this adjustment.
SEC Form 4
FORM 4UNITED 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 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)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP, Chief Operating 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)
XForm 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)
CodeVAmount(A) or (D)Price
American Depositary Shares(1)07/01/2026M(2)3,688(1)A(3)15,396(1)D
American Depositary Shares(1)07/01/2026F(4)1,926(1)D$15.9413,470(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Unit(5)$007/01/2026A3,688(1) (2) (3)American Depositary Shares(1)3,688(1)$0.000(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 attorney07/01/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR