AMARIN CORP PLC\UK·4

Jun 30, 5:20 PM ET

Berg Aaron 4

4 · AMARIN CORP PLC\UK · Filed Jun 30, 2026

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Amarin (AMRN) CEO Aaron Berg Exercises RSUs; 3,197 Shares Withheld

What Happened
Aaron Berg, President and CEO of Amarin (AMRN), had equity awards convert/vest on June 26, 2026. The Form 4 shows two derivative conversions (code M) totaling 12,500 shares acquired (6,250 + 6,250). To satisfy tax withholding obligations (code F), the issuer withheld 3,197 shares at $16.35 per share, a withholding value of $52,271. This was a vesting/acquisition event (not an open-market sale); net new shares acquired by Berg were 9,303 (12,500 acquired minus 3,197 withheld).

Key Details

  • Transaction date: June 26, 2026. Form 4 filed June 30, 2026 (4 days after the transaction).
  • Derivative conversions: two M-code entries of 6,250 shares each (total 12,500); one entry shows $0.00 exercise price (typical for RSU settlement).
  • Tax withholding: 3,197 shares withheld at $16.35 each, total $52,271; this withholding is by the issuer to cover tax liability (Footnote F4), not a market sale.
  • Net shares added to Berg’s holdings: 9,303 shares.
  • Shares owned following the transaction: not specified in the filing.
  • Relevant footnotes:
    • F1: ADS ratio change (1 ADS = 20 Ordinary Shares) impacted reported amounts.
    • F2: These awards relate to a 12,500 RSU grant (granted June 26, 2025) that vests in installments.
    • F5: Each RSU represents the right to receive 20 Ordinary Shares (or cash in lieu) at the issuer’s discretion.
  • Transaction codes: M = option/derivative exercise/conversion; F = withholding for taxes.

Context
This was a vesting/settlement of RSUs (derivative conversions), not a purchase or open-market sale. Withholding shares to cover taxes is standard practice for RSU vesting and does not necessarily signal buying or selling intent. The filing reports the mechanics and tax withholding; it does not state Berg’s total ownership after the event.

Insider Transaction Report

Form 4
Period: 2026-06-26
Berg Aaron
President and CEO
Transactions
  • Exercise/Conversion

    American Depositary Shares

    [F1][F2][F3]
    2026-06-26+6,25088,845 total
  • Tax Payment

    American Depositary Shares

    [F1][F4]
    2026-06-26$16.35/sh3,197$52,27185,648 total
  • Exercise/Conversion

    Restricted Stock Unit

    [F5][F1][F2][F3]
    2026-06-26+6,2506,250 total
    Exercise: $0.00American Depositary Shares (6,250 underlying)
Footnotes (5)
  • [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 June 26, 2025, the Reporting Person was granted 12,500 RSUs that vests in two equal installments on the first anniversary of the grant date and the remaining balance to vest eighteen months after grant date.
  • [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.
Signature
/s/ Jonathan Provoost, by power of attorney|2026-06-30

Documents

1 file
  • 4
    ownership.xmlPrimary

    4