Westlake Corp 8-K Filing

Ticker: WLK · Form: 8-K · Filed: Dec 15, 2025 · CIK: 1262823

Westlake Corp 8-K Filing Summary
FieldDetail
CompanyWestlake Corp (WLK)
Form Type8-K
Filed DateDec 15, 2025
Pages4
Reading Time5 min
Key Dollar Amounts$0.01, $415 million, $357 m, $25 m, $33 million
Sentimentneutral

Sentiment: neutral

FAQ

What type of filing is this?

This is a 8-K filing submitted by Westlake Corp (ticker: WLK) to the SEC on Dec 15, 2025.

What are the key financial figures in this filing?

Key dollar amounts include: $0.01 (ange on which registered Common Stock, $0.01 par value WLK The New York Stock Ex); $415 million (ur total pre-tax costs of approximately $415 million related to the closures of the faciliti); $357 m (sset write-off charges of approximately $357 million, employee severance and separatio); $25 m (e and separation costs of approximately $25 million, and other plant shut down costs); $33 million (plant shut down costs of approximately $33 million. The Company expects to recognize a s).

How long is this filing?

Westlake Corp's 8-K filing is 4 pages with approximately 1,262 words. Estimated reading time is 5 minutes.

Where can I view the full 8-K filing?

The complete filing is available on SEC EDGAR. You can also read the AI-decoded analysis with risk assessment and key highlights on ReadTheFiling.

Filing Stats: 1,262 words · 5 min read · ~4 pages · Grade level 13.4 · Accepted 2025-12-15 07:30:27

Key Financial Figures

  • $0.01 — ange on which registered Common Stock, $0.01 par value WLK The New York Stock Ex
  • $415 million — ur total pre-tax costs of approximately $415 million related to the closures of the faciliti
  • $357 m — sset write-off charges of approximately $357 million, employee severance and separatio
  • $25 m — e and separation costs of approximately $25 million, and other plant shut down costs
  • $33 million — plant shut down costs of approximately $33 million. The Company expects to recognize a s

Filing Documents

Forward-Looking Statements

Forward-Looking Statements The statements in this Current Report on Form 8-K that are not historical facts, including statements regarding the timing of the anticipated cessation of certain operations at the Aberdeen, Mississippi; Lake Charles, Louisiana North; Lake Charles, Louisiana South; and Lake Charles, Louisiana Styrene sites, the anticipated effects of such closures on production capacity, the estimated pre-tax costs and expected cash outflows associated with a closure of such facilities and other effects of an anticipated closure, are forward-looking statements within the meaning of the U.S. securities laws. These forward-looking statements are subject to significant risks and uncertainties, many of which are beyond the Company's control. Actual results could differ materially, based on factors including, but not limited to, the ultimate cost of closure of such facilities, the outcome of consultations with unions and other risks and uncertainties. For more detailed information about the factors that could cause actual results to differ materially, please refer to the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2024, which was filed with the SEC on February 25, 2025, and the Company's Quarterly Report on Form 10-Q for the quarter ended September 30, 2025, which was filed with the SEC on October 31, 2025. Item9.01.

Financial Statements and Exhibits

Financial Statements and Exhibits. (d) Exhibits Exhibit Number Description 99.1 Press release issued by Westlake Corporation on December 15, 2025. 99.2 Investor slide presentation dated December 15, 2025. 104 Cover Page Interactive Data File, formatted in Inline XBRL. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. WESTLAKE CORPORATION Date: December 15, 2025 By: /s/ L. Benjamin Ederington L. Benjamin Ederington Executive Vice President, Legal and External Affairs

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