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Basic Materials

Westlake Corporation (WLK)

Basic Materials $9.9B market cap

Data as of July 16, 2026

Environment
45.00
People
70.00
Leadership
60.00

Environment story

Westlake's environmental score reflects mixed performance. The company disclosed achievement of its 2030 Scope 1/2 emissions intensity reduction target (20% from 2016 baseline) and announced a new 5% additional reduction target by 2030 using 2024 baseline. However, Scope 3 emissions are undisclosed, preventing full assessment. The company faces significant resource controversies: mercury cell chlor-alkali operations required forced cessation by May 2025 per EPA rules; PVC manufacturing is under scrutiny including potential vinyl chloride risk evaluation; PFAS chemicals face tightening regulation; and the company has recognized asset retirement obligations and environmental remediation liabilities. Net-zero target year is not explicitly disclosed in filings (no commitment before 2045), triggering a 15-point deduction. Greenwashing detection: the company reports emissions reductions via operational improvements rather than pure offsets, but supply-chain Scope 3 data absence means actual footprint transparency is severely limited. No verified physical decarbonization infrastructure investments (beyond normal capex) are documented.

Criticisms on file

  • Mercury Cell Chlor-Alkali Regulation & Forced Closure: EPA finalized amendments in May 2022 requiring cessation of mercury emissions from mercury cell chlor-alkali plants by May 6, 2025. Company ceased Natrium facility mercury cell unit in May 2025 and continues incurring decommissioning costs.
    Source: WLK 10-K Item 1A Risk Factors; MD&A Recent Developments
  • Vinyl Chloride Risk Evaluation: EPA designated vinyl chloride as High Priority Substance in December 2024 and is undertaking TSCA risk evaluation. Company manufactures vinyl chloride and EDC (which EPA designated High Priority in December 2019; draft risk evaluation published November 2025).
    Source: WLK 10-K Item 1A Risk Factors - Legal, Governmental and Regulatory Risks
  • PFAS Chemical Regulation Tightening: EPA issued NPDWR for six PFAS chemicals in April 2024; on May 14, 2025, EPA announced it would keep NPDWR for PFOA and PFOS, extend compliance deadlines, and rescind/reconsider regulations for other PFAS. Company unable to predict compliance cost impact.
    Source: WLK 10-K Item 1A Risk Factors - Environmental Laws
  • Trichloroethylene (TCE) and Perchloroethylene (PCE) Phase-Out: EPA issued December 2024 final rule phasing out manufacturing and processing; rule stayed by Fifth and Third Circuits with effective dates postponed to February 17, 2026. Company operates subject to this uncertainty.
    Source: WLK 10-K Item 1A Risk Factors - Environmental Laws
  • PVC Plastic Regulation Scrutiny: EPA denied 2014 Center for Biological Diversity petition to regulate discarded PVC as hazardous waste in April 2024. Local and state governments have increasingly restricted single-use plastics and plastic food packaging. Company faces potential demand reduction for PVC and polyethylene products.
    Source: WLK 10-K Item 1A Risk Factors - Environmental Laws
  • Environmental Liability & Contamination: Company subject to CERCLA and similar state/European directives imposing joint and several liability for remediation of current and former facilities. Company acknowledges potential contamination at current and former operating facilities and has unquantified future liabilities.
    Source: WLK 10-K Item 1A Risk Factors - Environmental Laws
  • Pernis Facility Closure: Company permanently ceased operations of AC, ECH, BPA, LER and SER units at Pernis, Netherlands site in 2H 2025 due to sustained deterioration of epoxy sales volumes and prices. Closure costs recognized: $247 million (including $98M asset retirement obligations, $111M contract termination, $23M severance, $15M inventory write-down). Additional ~$10M expected through 2030.
    Source: WLK 10-K MD&A Recent Developments
  • North American Chlorovinyls Facility Closures: Company ceased operations of PVC plant at Aberdeen, Mississippi; VCM and diaphragm chlor-alkali units at Lake Charles, Louisiana (North and South sites); and styrene plant at Lake Charles in Q4 2025. Total 2025 closure costs: $393M ($317M non-cash depreciation/amortization/asset write-offs, $52M asset retirement obligations, $17M severance, $7M other). Additional ~$25M expected through 2027.
    Source: WLK 10-K MD&A Recent Developments
  • Water and Hazardous Materials Operational Risks: Company acknowledges operations subject to usual hazards of chemical manufacturing including pipeline leaks/ruptures, explosions, fires, chemical spills, discharges/releases of toxic/hazardous substances. Company maintains partial insurance coverage and faces potential significant liabilities.
    Source: WLK 10-K Item 1A Risk Factors - Production Facilities Hazards
  • EU Environmental Compliance Costs: Industrial Emission Directive (IED) and Environmental Liability Directive impose 'best available technique' standards and 'polluter pays' principle for soil/groundwater contamiation. ECHA investigation results on PVC and additives risks sent to European Commission; ECHA proposed PFAS restrictions. Company unable to predict compliance cost impact.
    Source: WLK 10-K Item 1A Risk Factors - Environmental Laws
  • Undisclosed Scope 3 Emissions: Company does not quantify or report Scope 3 (supply chain, product usage) emissions in 10-K. For a petrochemical company with significant product-usage emissions (e.g., PVC in construction, polyethylene in packaging), this represents material omission.
    Source: WLK 10-K - Scope 3 emissions data absent from environmental disclosures
  • Climate Regulation Uncertainty: Company discloses exposure to potential GHG legislation and regulations. EPA announced July 2025 proposal to rescind Endangerment Finding and September 2025 proposal to end Greenhouse Gas Reporting Program (GHGRP). January 2026 US withdrawal from Paris Agreement creates regulatory uncertainty.
    Source: WLK 10-K Item 1A Risk Factors - GHG Emissions & Climate Regulations

Disclosed initiatives

  • Scope 1/2 Emissions Intensity Reduction Target
    Company met 20% reduction target (2016 baseline) by November 2024 and announced new 5% additional reduction target by 2030 using 2024 baseline. Methodology and disclosure frameworks may change.
    Demonstrates operational carbon intensity improvement but relies on assumptions that may prove incorrect; no absolute reduction guarantee.
  • Mercury Cell Chlor-Alkali Cessation
    Ceased mercury cell production unit at Natrium facility in May 2025 per EPA rule requiring elimination of mercury emissions. Ongoing decommissioning and demolition costs expected in 2026.
    Regulatory compliance; eliminates mercury emissions but represents facility contraction rather than innovation.
  • Capital Allocation to Lower-Carbon Projects
    Company states expected allocation of growth capital into lower-carbon projects is consistent with emissions targets, but no specific investments or dollar amounts disclosed.
    Unverified; contingent on future execution and accuracy of underlying assumptions.

Social story

Westlake's social score reflects moderate performance with labor representation concerns offset by limited transparency. The company discloses union representation of vast majority of European and Asian employees plus some North American workforce, but documents no active union-suppression activities or major strikes in past 24 months, avoiding a 20-point penalty. However, CEO-to-median-worker pay ratio is undisclosed, preventing assessment against the 200:1 threshold. Leadership diversity metrics are not disclosed; without data, no penalty can be applied but transparency gap signals potential weakness. Supply-chain audit data regarding human-rights hazards (e.g., cobalt, lithium sourcing) is absent from 10-K. The company acknowledges operational and labor-relations risks and past strike history but provides no current labor-relations scorecard, grievance statistics, or diversity composition. No evidence of formal DEI programs, supplier diversity initiatives, or civil-rights audits appears in filings.

Criticisms on file

  • Labor-Relations Risks: Company acknowledges strikes and work stoppages have occurred in the past in connection with collective bargaining negotiations. Future strikes could have adverse effects on financial condition and operations.
    Source: WLK 10-K Item 1A Risk Factors - Labor Relations
  • Undisclosed CEO-to-Median-Worker Pay Ratio: 10-K does not disclose CEO compensation or median employee pay, preventing assessment of pay equity or executive overcompensation.
    Source: WLK 10-K - Executive Compensation section absent from provided excerpts; no CEO pay ratio disclosed
  • Undisclosed Leadership & Board Diversity: 10-K does not provide diversity metrics for executive team or board of directors (gender, race/ethnicity percentages). Transparency gap limits assessment of D&I performance.
    Source: WLK 10-K - Diversity disclosures absent from provided excerpts
  • Supply-Chain Human-Rights Audit Gap: Company does not disclose supply-chain audits, labor practices at supplier facilities, or due diligence for high-risk commodities (e.g., cobalt, lithium, salt mining conditions). No modern slavery statement or conflict minerals policy disclosed.
    Source: WLK 10-K - Supply chain labor/human-rights disclosures absent
  • Workforce Reduction & Plant Closures: Company ceased operations at multiple facilities in 2025 (Pernis Netherlands, Lake Charles Louisiana, Aberdeen Mississippi, Suzhou China), recognizing $17M severance (Lake Charles/Aberdeen) + $23M severance (Pernis). Total employee impact unknown; severance adequacy not disclosed.
    Source: WLK 10-K MD&A Recent Developments - Facility Closures
  • Undisclosed Turnover & Workforce Composition: 10-K provides no turnover rate, headcount by geography, or workforce composition metrics (full-time, part-time, contractor). Prevents assessment of workforce stability and labor equity.
    Source: WLK 10-K - Workforce metrics absent

Disclosed initiatives

  • Union Representation Coverage
    Vast majority of European and Asian workforce represented by labor unions and works councils; some North American employees unionized. Company subject to collective bargaining.
    Provides baseline labor protections but no evidence of proactive labor cooperation or grievance resolution programs.
  • Pension and OPEB Obligations
    Company maintains defined benefit pension plans and OPEB obligations for current and former employees. As of December 31, 2025, projected benefit obligations were $868M (pension) and $37M (OPEB); fair value of pension assets $672M; net underfunded status $196M.
    Demonstrates commitment to retirement security but significant underfunding reflects potential future cash pressure and employee security risk.

Governance story

Westlake's governance score reflects significant structural control concentration and moderate operational governance weaknesses. Principal stockholder (TTWF LP) and affiliates own ~72% of common stock, exercising effective control over all stockholder votes and corporate decisions without triggering a dual-class share deduction (single-class structure, but supermajority voting control in practice). Board independence percentage is undisclosed, preventing direct assessment; absent disclosure, no deduction applied but transparency gap is material. Company does not disclose lobbying expenditures or political contributions, preventing assessment of climate/consumer-protection regulatory capture. Goodwill impairment of $727M in Q3 2025 due to macroeconomic deterioration and operational losses in North American Chlorovinyls segment; while not a governance failure per se, reflects risk-management weakness in prior asset valuation. Company discloses no active antitrust proceedings but acknowledges participation in antidumping/countervailing duty coalitions (epoxy resins, PVC) and prior trade defense activities. No evidence of shareholder litigation over climate proposals or ESG governance disputes in filings. Company maintains compliance with debt covenants and Credit Agreement total leverage ratio as of December 31, 2025.

Criticisms on file

  • Principal Stockholder Control: TTWF LP and affiliates own ~72% of common stock as of December 31, 2025, enabling supermajority control over all stockholder matters. Minority stockholders cannot affect outcome of any vote. Company has elected NOT to be subject to Delaware Section 203, facilitating easier sale of controlling interest without shareholder participation.
    Source: WLK 10-K Item 1A Risk Factors - Ownership of Securities
  • Conflict-of-Interest Risks: Company acknowledges principal stockholder affiliates have no duty to refrain from competing businesses or presenting opportunities to company. Certificate of incorporation provides liability waiver for principal stockholder affiliates. Potential conflicts in business opportunities, employee solicitation, and corporate services agreements.
    Source: WLK 10-K Item 1A Risk Factors - Ownership of Securities
  • Undisclosed Board Independence: 10-K does not disclose percentage of independent board members or independence criteria. Unable to verify compliance with governance best practices (>80% independence target).
    Source: WLK 10-K - Board composition and independence metrics absent from provided excerpts
  • Undisclosed Lobbying & Political Contributions: 10-K does not disclose annual lobbying expenditures, PAC contributions, or political spending. Company references participation in trade associations and industry coalitions (e.g., U.S. Epoxy Resin Producers Ad Hoc Coalition for antidumping investigations) but provides no transparency on legislative advocacy targets or climate/regulatory positions.
    Source: WLK 10-K - Lobbying/political contribution disclosures absent
  • Antidumping & Trade Defense Activities: Company is member of U.S. Epoxy Resin Producers Ad Hoc Coalition which filed antidumping/countervailing duty petitions (April 2024) and EU antidumping complaint (June 2024) regarding epoxy resin imports. Similar trade defense activities for PVC (antidumping duties imposed by EU, UK, Brazil on U.S. PVC exports). Company acknowledges ultimate effects uncertain and revocation possible, but actively engages in trade protection advocacy.
    Source: WLK 10-K Item 1A Risk Factors - Commodity Exports & Fair Trade; MD&A Antidumping Investigations
  • Goodwill Impairment & Asset Valuation Risk: Company recognized non-cash goodwill impairment of $727M in Q3 2025 for North American Chlorovinyls reporting unit due to recent operating losses and downward forecast revisions. Reflects risk-management and prior asset valuation governance weakness; ongoing macroeconomic deterioration and chlorovinyls industry stress could trigger further impairments.
    Source: WLK 10-K MD&A Goodwill Impairment; Item 1A Risk Factors - Long-Lived Assets Impairment
  • Undisclosed Shareholder Proposals & ESG Governance Contests: 10-K does not disclose any shareholder proposals, voting results on ESG/climate/social matters, or activist engagement. Absence of disclosure suggests either no recent proposals or lack of transparency on contested governance issues.
    Source: WLK 10-K - Shareholder proposal disclosures absent from provided excerpts
  • Climate Regulation Lobbying Uncertainty: Company acknowledges 'public and investor sentiment towards climate change' as risk factor and discloses exposure to potential GHG regulations, but does not disclose whether company or trade associations (of which it is member) actively lobbies to weaken climate regulation. Risk Factor notes 'technological innovations, including transition to lower GHG emissions technology' as external factor affecting operations, suggesting potential misalignment between disclosed climate targets and lobbying activities.
    Source: WLK 10-K Item 1A Risk Factors - Climate Change Sentiment; Environmental Regulation

Disclosed initiatives

  • Debt Covenant Compliance
    Company maintains compliance with Credit Agreement total leverage ratio financial maintenance covenant and all indenture covenants as of December 31, 2025.
    Demonstrates ongoing financial discipline and lender confidence but does not reflect proactive governance reform.
  • Disclosure of Risk Factors & Contingencies
    Company extensively discloses risk factors, legal proceedings, environmental liabilities, and contingencies in 10-K Item 1A and Note 21.
    Provides transparency on material risks but does not constitute affirmative governance improvement.

These are Missionomics' own editorial scores — directional signals built from disclosed facts under a published method, not certifications or definitive ratings of Westlake Corporation. Coverage and confidence vary by data point, and figures can lag real-world changes. Read the full Methodology for sourcing, scoring, and correction details — or open Westlake Corporation in the app for interactive charts and portfolio building.

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