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Amarin (AMRN) CFO acquires 2,447 ADS; 1,206 withheld for taxes

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

Rhea-AI Filing Summary

Amarin Corporation plc SVP & CFO Peter L. Fishman acquired 2,447 American Depositary Shares (ADS) on July 1, 2026 through the vesting and settlement of equity awards. To cover related taxes, 1,206 ADS were withheld by the company at $15.94 per ADS, which was not a market sale. Following these transactions, he directly holds 8,667 ADS. These awards relate to 4,894 RSUs granted on January 10, 2025 under the 2020 Stock Incentive Plan, vesting in two tranches through July 1, 2026.

Positive

  • None.

Negative

  • None.
Insider Fishman Peter L.
Role SVP, CFO
Type Security Shares Price Value
Grant/Award Restricted Stock Unit 2,447 $0.00 --
Exercise American Depositary Shares 2,447 -- --
Tax Withholding American Depositary Shares 1,206 $15.94 $19K
Holdings After Transaction: Restricted Stock Unit — 0 shares (Direct); American Depositary Shares — 8,667 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 4,894 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.
ADS acquired via equity award settlement 2,447 ADS American Depositary Shares acquired through exercise/settlement of equity awards on July 1, 2026
ADS withheld for taxes 1,206 ADS Shares withheld to cover tax liability at $15.94 per ADS on July 1, 2026
Tax withholding valuation price $15.94 per ADS Price per ADS applied to 1,206 withheld shares for tax purposes
Direct ADS holdings after transactions 8,667 ADS American Depositary Shares held directly by Peter L. Fishman following July 1, 2026 transactions
RSU grant size on January 10, 2025 4,894 RSUs Restricted Stock Units granted under the 2020 Stock Incentive Plan, vesting over eighteen months
American Depositary Share financial
"one (1) American Depositary Share ("ADS") currently represents twenty (20) Ordinary Shares"
An American Depositary Share (ADS) is a U.S.-listed certificate that represents a specified number of shares in a foreign company, held by a custodian bank; it works like a receipt that allows U.S. investors to buy and trade foreign equity on American exchanges without dealing with another country’s markets. Investors care because ADSs make foreign stocks easier to access, improve liquidity and settlement in dollars, and can affect dividend payments, voting rights and regulatory oversight compared with buying the underlying foreign shares directly.
Restricted Stock Units financial
"the Reporting Person was granted 4,894 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2020 Stock Incentive 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.
Rule 16b-3 regulatory
"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"
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 that one (1) American Depositary Share ("ADS") currently represents twenty (20) 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.
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Form 4 Insider Transactions: What Each Field Means →

FAQ

What insider transaction did Amarin (AMRN) CFO Peter L. Fishman report?
Peter L. Fishman reported equity award vesting that delivered 2,447 American Depositary Shares (ADS) on July 1, 2026. In connection with this vesting, the company withheld 1,206 ADS to satisfy tax obligations, and his direct holdings increased to 8,667 ADS.

How many Amarin (AMRN) ADS did the CFO acquire and how many were withheld for taxes?
The CFO acquired 2,447 ADS through settlement of restricted stock units and had 1,206 ADS withheld by Amarin for tax liabilities at $15.94 per ADS. These withheld shares were applied to taxes and did not involve an open-market sale.

Are the 1,206 ADS in the Amarin (AMRN) Form 4 a market sale?
No. The 1,206 ADS were withheld by Amarin to cover tax liability related to vesting and are described as "not a market sale of securities". This is a compensation-related tax withholding event under Rule 16b-3, not an open-market disposition.

How many Amarin (AMRN) ADS does Peter L. Fishman own after these transactions?
After the July 1, 2026 transactions, Peter L. Fishman directly holds 8,667 American Depositary Shares of Amarin. This figure reflects the ADS received from equity award vesting net of the 1,206 ADS withheld by the issuer to satisfy associated tax obligations.

What equity award underlies the July 1, 2026 Amarin (AMRN) insider transactions?
The transactions relate to a grant of 4,894 Restricted Stock Units (RSUs) awarded on January 10, 2025 under the Amarin Corporation plc 2020 Stock Incentive Plan. These RSUs vest over eighteen months, with the final portion vesting on July 1, 2026.

What is the ADS ratio mentioned for Amarin (AMRN) shares?
Effective April 11, 2025, Amarin implemented an ADS Ratio Change so that one ADS represents twenty Ordinary Shares. The company made proportionate adjustments to outstanding equity awards, and the amounts reported in this Form 4 already reflect this revised ratio.
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*
Fishman Peter L.
(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)
SVP, CFO
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)2,447(1)A(3)8,667(1)D
American Depositary Shares(1)07/01/2026F(4)1,206(1)D$15.947,461(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)$007/01/2026A2,447(1) (2) (3)American Depositary Shares(1)2,447(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 4,894 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