---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-324110"
form_type: "8-K"
ticker: "WLK"
cik: "0001262823"
company_name: "WESTLAKE CORP"
filed_at: "2026-07-29T20:45:24+00:00"
generated_at: "2026-07-29T20:46:17.894327+00:00"
event_type: "litigation"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Amsterdam court dismisses two ethylene antitrust lawsuits against Westlake; €1.025B claim rejected

## Summary
- District Court of Amsterdam dismissed Shell Chemical Europe B.V. lawsuit alleging ~€1,025 million damages.
- Court also dismissed Stichting Ethylene Claims declaratory judgment action seeking unspecified damages.
- Both dismissals are subject to appeal by the plaintiffs; twelve related lawsuits remain pending at first instance.
- Westlake and other ethylene consumers are defendants in a total of fourteen civil lawsuits in Netherlands and Germany.

## SEC filing metadata
- accession: 0001193125-26-324110
- form_type: 8-K
- ticker: WLK
- cik: 0001262823
- company_name: WESTLAKE CORP
- filed_at: 2026-07-29T20:45:24+00:00
- event_type: litigation
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1262823/000119312526324110/0001193125-26-324110-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1262823/000119312526324110/d151580d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-324110
- JSON: https://secwatch.observer/filing/0001193125-26-324110.json
- Plain text: https://secwatch.observer/filing/0001193125-26-324110.txt

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