---
schema_version: "secwatch.filing_event.v1"
accession: "0001262823-24-000006"
form_type: "8-K"
ticker: "WLK"
cik: "0001262823"
company_name: "WESTLAKE CORP"
filed_at: "2024-02-20T23:59:59+00:00"
generated_at: "2026-06-05T22:46:09.598606+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Westlake Q4 net loss $497M on $2.8B revenue; $625M in charges drag results

## Summary
- Q4 net loss of $497M ($3.86 diluted loss) includes $475M impairment on epoxy assets and $150M litigation settlement charge.
- Excluding identified items, Q4 net income $93M ($0.72 diluted EPS) and EBITDA $390M.
- Full-year 2023 net sales $12.5B, net income $479M, and free cash flow $1.3B.
- HIP segment posted record annual operating income of $710M with 23% EBITDA margin.
- PEM segment (ex-items) EBITDA $1.59B, down 51% YoY on weak pricing and European cost headwinds.

## SEC filing metadata
- accession: 0001262823-24-000006
- form_type: 8-K
- ticker: WLK
- cik: 0001262823
- company_name: WESTLAKE CORP
- filed_at: 2024-02-20T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1262823/000126282324000006/0001262823-24-000006-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1262823/000126282324000006/wlk-20240220.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001262823-24-000006
- JSON: https://secwatch.observer/filing/0001262823-24-000006.json
- Plain text: https://secwatch.observer/filing/0001262823-24-000006.txt

## Key facts
- Earnings Releases
  WESTLAKE CORP reported fourth quarter and full year 2023 results: revenue $2,826 million, net income a net loss of $497 million, EPS $3.86 per share.
  - Period: fourth quarter and full year 2023
  - Revenue: $2,826 million
  - Net income: a net loss of $497 million
  - EPS: $3.86 per share
  - Result: reported results
  source text: Items) For the three months ended December 31, 2023, the Company reported quarterly net income attributable to Westlake of $93 million, or $0.72 per share, on net sales of $2,826 million. The year-ove
  evidence_url: https://www.sec.gov/Archives/edgar/data/1262823/000126282324000006/0001262823-24-000006-index.htm

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