---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-022635"
form_type: "8-K"
ticker: "AMRN"
cik: "0000897448"
company_name: "AMARIN CORP PLCUK"
filed_at: "2024-02-29T23:59:59+00:00"
generated_at: "2026-06-05T07:44:50.524258+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Amarin reports Q4 revenue down 17% to $74.7M; GAAP net loss $5.8M; initiates $50M share repurchase

## Summary
- Total net revenue $74.7M in Q4 2023 vs $90.2M in Q4 2022 (-17%); US net product revenue fell to $64.9M from $88.0M due to generic competition.
- GAAP net loss $5.8M ($0.01 loss per share) vs net income $0.9M in prior year; non-GAAP adjusted net loss $0.9M.
- Gross margin on net product revenue declined to 58% from 70% in Q4 2022.
- Cash and investments $321M at year-end; reaffirmed full-year positive cash flow of $10M.
- Board initiated shareholder approval process for up to $50M share repurchase program expected by end of Q2 2024.

## SEC filing metadata
- accession: 0000950170-24-022635
- form_type: 8-K
- ticker: AMRN
- cik: 0000897448
- company_name: AMARIN CORP PLCUK
- filed_at: 2024-02-29T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/897448/000095017024022635/0000950170-24-022635-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/897448/000095017024022635/amrn-20240229.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-022635
- JSON: https://secwatch.observer/filing/0000950170-24-022635.json
- Plain text: https://secwatch.observer/filing/0000950170-24-022635.txt

## Key facts
- Earnings Releases
  AMARIN CORP PLCUK updated its the quarter and year ended December 31, 2023 guidance (reaffirmed).
  - Period: the quarter and year ended December 31, 2023
  - Guidance: reaffirmed
  - Result: reported results
  source text: On February 29, 2024, Amarin Corporation plc (“ Amarin ”) issued a press release announcing its financial results for the three and twelve months ended December 31, 2023 and 2022 (the “ Press Release ”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/897448/000095017024022635/0000950170-24-022635-index.htm

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