Westlake Corp Reports Dutch Court Dismissals in Ethylene Antitrust Suits

What Happened
Westlake Corporation announced on July 29, 2026 that the District Court of Amsterdam dismissed the plaintiffs’ claims against Westlake and other defendants in two lawsuits that are part of the broader Ethylene Antitrust Litigation. The dismissed suits are: the March 2023 action by Shell Chemical Europe B.V. (SCE), which had alleged damages of approximately €1,025 million (plus statutory interest), and the November 2023 action by Stichting Ethylene Claims, which sought a declaratory judgment of liability for unspecified damages. Both dismissals are subject to appeal by the plaintiffs. Twelve other lawsuits in the consolidated litigation remain pending at first-instance courts.

Key Details

• Total litigation: 14 civil lawsuits in the Netherlands and Germany named in the Ethylene Antitrust Litigation.
• Dismissals: SCE suit (filed March 2023) alleged ~€1,025 million in damages; Stichting suit (filed November 2023) sought a declaratory judgment. Both were dismissed on July 29, 2026.
• Status: Dismissals can be appealed; 12 related cases remain pending at first-instance courts.
• Disclosures: The filing includes a forward-looking statement caution and references Westlake’s 2025 Form 10-K (filed Feb 26, 2026) and 2026 Q1 Form 10-Q (filed May 6, 2026) for risk factors.

Why It Matters
For investors, the Amsterdam court dismissals reduce the immediate legal exposure associated with these two specific claims, including the large SCE damages claim, but the outcomes are not final because plaintiffs may appeal. The company still faces a substantial number of pending suits, so potential liabilities, legal costs and future rulings remain key uncertainties. Westlake’s 8-K reminds investors that forward-looking statements about litigation outcomes are subject to significant risk and refers to its 10-K and 10-Q for more detail on legal and other risks.