---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-086943"
form_type: "8-K"
ticker: "AMRN"
cik: "0000897448"
company_name: "AMARIN CORP PLCUK"
filed_at: "2023-03-31T23:59:59+00:00"
generated_at: "2026-06-17T08:46:55.948375+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# CEO Karim Mikhail resigns effective immediately; company disputes severance claim

## Summary
- Karim Mikhail resigned as President and CEO effective March 27, 2023.
- Mikhail asserts entitlement to severance; company disagrees and intends to dispute.
- Board appoints Odysseas D. Kostas as chairperson.
- Company is in the process of identifying a permanent replacement for CEO.

## SEC filing metadata
- accession: 0001193125-23-086943
- form_type: 8-K
- ticker: AMRN
- cik: 0000897448
- company_name: AMARIN CORP PLCUK
- filed_at: 2023-03-31T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 5.02, 7.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/897448/000119312523086943/0001193125-23-086943-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/897448/000119312523086943/d488380d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-086943
- JSON: https://secwatch.observer/filing/0001193125-23-086943.json
- Plain text: https://secwatch.observer/filing/0001193125-23-086943.txt

## Key facts
- Executive change
  Karim Mikhail resigned as President and Chief Executive Officer at AMARIN CORP PLCUK.
  - Action: resigned
  - Role: President and Chief Executive Officer
  source text: On March 27, 2023, Karim Mikhail notified Amarin Corporation plc (the “Company”) of his decision to resign as President and Chief Executive Officer of the Company, effective immediately. Mr. Mikhail has asserted that he is entitled to severance payments as the result of his resignation, which the Company disagrees with and intends to dispute.
  evidence_url: https://www.sec.gov/Archives/edgar/data/897448/000119312523086943/0001193125-23-086943-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.