---
schema_version: "secwatch.filing_event.v1"
accession: "0001262823-25-000061"
form_type: "8-K"
ticker: "WLK"
cik: "0001262823"
company_name: "WESTLAKE CORP"
filed_at: "2025-10-30T23:59:59+00:00"
generated_at: "2026-05-17T01:15:14.483628+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Westlake Q3 net loss $782M on $727M goodwill impairment; adjusted EPS -$0.29 vs $1.41 YoY

## Summary
- Net loss $782M ($6.06/share) vs net income $108M ($0.83) YoY; excludes $744M identified items.
- EBITDA excl. items $313M, down 46% from $580M YoY, on lower PEM pricing/volume.
- HIP segment EBITDA $215M (20% margin) at low end of 2025 guidance; PEM EBITDA excl. items $90M.
- Recorded $727M non-cash goodwill impairment on North American Chlorovinyls reporting unit.
- Targeting $200M cost savings in 2026; Pernis shutdown to remove ~$100M annual losses starting 2026.

## SEC filing metadata
- accession: 0001262823-25-000061
- form_type: 8-K
- ticker: WLK
- cik: 0001262823
- company_name: WESTLAKE CORP
- filed_at: 2025-10-30T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1262823/000126282325000061/0001262823-25-000061-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1262823/000126282325000061/wlk-20251030.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001262823-25-000061
- JSON: https://secwatch.observer/filing/0001262823-25-000061.json
- Plain text: https://secwatch.observer/filing/0001262823-25-000061.txt

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