7Suppliers
23Customers
1Debt Items
13Related Chains

Westlake Corporation Suppliers

TickerNameConfidenceEvidence
LACC LACC 92% We receive our proportionate share in ethylene production on a cash-cost basis and primarily use it to produce VCM.
LACC-LLC LACC-LLC 90% As of March 31, 2026, the Company owned an aggregate 50 % membership interest in LACC, LLC
SEVERAL-SUPPLIERS SEVERAL-SUPPLIERS 90% We receive benzene via barges, ships and pipeline pursuant to short-term arrangements.
SSL Sasol Limited 72% Reciprocal relationship from SSL graph: Reciprocal relationship from WLK graph: ucts, pipe and fittings and compounds in the HIP segment. The remainder of our PVC is sold to downstream fabricators an…
SSL Sasol Limited 72% ucts, pipe and fittings and compounds in the HIP segment. The remainder of our PVC is sold to downstream fabricators and the international markets. We have the capacity to use a majority of our chlor…
TREX Trex Company, Inc. 72% of our siding, trim and mouldings, stone, roofing, windows and outdoor living products, PVC pipe, specialty PVC pipe and fittings through a combination of our internal sales force and some external m…
TREX Trex Company, Inc. 72% Reciprocal relationship from TREX graph: Reciprocal relationship from WLK graph: Reciprocal relationship from TREX graph: Reciprocal relationship from WLK graph: of our siding, trim and mouldings, st…

Westlake Corporation Customers

TickerNameConfidenceEvidence
ONE-OF-ITS-CUSTOMERS ONE-OF-ITS-CUSTOMERS 85% In May 2022, the Company entered into a chlorine and hydrogen chloride exchange contract with one of its customers
OTTR Otter Tail Corporation 72% decision. BASF seeks alleged damages of € 1,397 million from the defendants, plus statutory interest accruing from the date of each relevant transaction (amounting to approximately € 1 billion as of …
OTTR Otter Tail Corporation 72% Reciprocal relationship from OTTR graph: Reciprocal relationship from WLK graph: Reciprocal relationship from OTTR graph: Reciprocal relationship from WLK graph: Reciprocal relationship from OTTR gra…
SSL Sasol Limited 72% Reciprocal relationship from SSL graph: Reciprocal relationship from WLK graph: Reciprocal relationship from SSL graph: Reciprocal relationship from WLK graph: Reciprocal relationship from SSL graph:…
SSL Sasol Limited 72% ucts, pipe and fittings and compounds in the HIP segment. The remainder of our PVC is sold to downstream fabricators and the international markets. We have the capacity to use a majority of our chlor…
TREX Trex Company, Inc. 72% Reciprocal relationship from TREX graph: Reciprocal relationship from WLK graph: of our siding, trim and mouldings, stone, roofing, windows and outdoor living products, PVC pipe, specialty PVC pipe a…
TREX Trex Company, Inc. 72% of our siding, trim and mouldings, stone, roofing, windows and outdoor living products, PVC pipe, specialty PVC pipe and fittings through a combination of our internal sales force and some external m…
WLKP Westlake Chemical Partners LP 72% Item 1. Business Overview Westlake Corporation is a vertically integrated global manufacturer and marketer of both housing and infrastructure products and performance and essential materials that are…
WLKP Westlake Chemical Partners LP 72% Reciprocal relationship from WLKP graph: Reciprocal relationship from WLK graph: Reciprocal relationship from WLKP graph: Reciprocal relationship from WLK graph: Reciprocal relationship from WLKP gra…
CHEVRON-PHILLIPS-CHEMICAL-COMPANY-DOW-INC-EXXONM CHEVRON-PHILLIPS-CHEMICAL-COMPANY-DOW-INC-EXXONM 62% inder of our PVC is sold to downstream fabricators and the international markets. We have the capacity to use a majority of our chlorine internally to produce VCM and EDC, most of which, in turn, is …
CO-KG-WESTLAKE-VINNOLIT-GMBH CO-KG-WESTLAKE-VINNOLIT-GMBH 62% decision. BASF seeks alleged damages of € 1,397 million from the defendants, plus statutory interest accruing from the date of each relevant transaction (amounting to approximately € 1 billion as of …
DIAMOND-PLASTICS-CORPORATION-IPEX-INC-JM-EAGLE-I DIAMOND-PLASTICS-CORPORATION-IPEX-INC-JM-EAGLE-I 62% tents We also enhanced circularity of more of our products as discussed in our 2023 Sustainability Report, which is available at our website at www.westlake.com. Following our acquisition of Westlake…
EQUITY-METHOD-INVESTMENTS-LACC-LLC EQUITY-METHOD-INVESTMENTS-LACC-LLC 62% ons used in determining the fair value of the reporting units using the market value methodology include the determination of appropriate market comparables and the estimated multiples of net income …
FORMOSA-PLASTICS-CORPORATION FORMOSA-PLASTICS-CORPORATION 62% assessment of the potential impact of environmental matters, in particular, is subject to uncertainty due to the complex, ongoing and evolving process of investigation and remediation of such environ…
FORMOSA-PLASTICS-CORPORATION-LYONDELLBASELL-INDU FORMOSA-PLASTICS-CORPORATION-LYONDELLBASELL-INDU 62% inder of our PVC is sold to downstream fabricators and the international markets. We have the capacity to use a majority of our chlorine internally to produce VCM and EDC, most of which, in turn, is …
LOTTE-CHEMICAL-CORPORATION LOTTE-CHEMICAL-CORPORATION 62% ons used in determining the fair value of the reporting units using the market value methodology include the determination of appropriate market comparables and the estimated multiples of net income …
LOTTE-CHEMICAL-USA-CORPORATION LOTTE-CHEMICAL-USA-CORPORATION 62% its at our site in Pernis, the Netherlands in July 2024, has and may in the future result in environmental remediation, employee separation and other expenses. Our ability to realize the anticipated …
OXYCHEM-SHINTECH-INCORPORATED OXYCHEM-SHINTECH-INCORPORATED 62% assessment of the potential impact of environmental matters, in particular, is subject to uncertainty due to the complex, ongoing and evolving process of investigation and remediation of such environ…
RS-COGEN-LLC RS-COGEN-LLC 62% interests represent the direct equity interests held by investors in the Company's consolidated subsidiaries, Westlake Partners, Taiwan Chlorine Industries, Ltd. and Suzhou Huasu Plastics Co., Ltd. E…
SAS-OLIN-CORPORATION-ORBIA-ADVANCE-CORPORATION-O SAS-OLIN-CORPORATION-ORBIA-ADVANCE-CORPORATION-O 62% inder of our PVC is sold to downstream fabricators and the international markets. We have the capacity to use a majority of our chlorine internally to produce VCM and EDC, most of which, in turn, is …
SUSTAINABLE-AG SUSTAINABLE-AG 62% study by Sustainable AG, tested by TÜV Rheinland, in accordance with the ISO 14067 standard, taking biogenic CO2 fixations into account. Another example of our efforts to improve the sustainability o…
SUZHOU-HUASU-PLASTICS-CO-LTD SUZHOU-HUASU-PLASTICS-CO-LTD 62% interests represent the direct equity interests held by investors in the Company's consolidated subsidiaries, Westlake Partners, Taiwan Chlorine Industries, Ltd. and Suzhou Huasu Plastics Co., Ltd. E…
TEKNOR-APEX-COMPANY-INC TEKNOR-APEX-COMPANY-INC 62% tents We also enhanced circularity of more of our products as discussed in our 2023 Sustainability Report, which is available at our website at www.westlake.com. Following our acquisition of Westlake…

Westlake Corporation Debt Obligations

InstrumentDescriptionConfidenceEvidence
WLK-DEBT Debt stack $6.4B 90% Market cache reports total debt of $6.4B.

Westlake Corporation Acquisitions

No acquisitions on recordNo completed or pending acquisitions found in our database for Westlake Corporation.

Westlake Corporation Ownership

HolderNameConfidenceEvidence
WLK-OWNER-ORBIS-ALLAN-GRAY-LTD Orbis Allan Gray Ltd 90% 13F overlay lists Orbis Allan Gray Ltd as top holder; 338 tracked holders.

Westlake Corporation Extended Supply Chain Network

TickerNameChain IndexHopsRelationship Types
SASOF Sasol Limited 100.00 2
WLKP Westlake Chemical Partners LP 100.00 1 ['customer']
DRD DRDGOLD Limited 100.00 2
TTC The Toro Company 50.00 2
ASPI ASP Isotopes Inc. 50.00 2
CNH CNH Industrial N.V. 50.00 2
DE Deere & Company 50.00 2
TROX Tronox Holdings plc 50.00 2
TREX Trex Company, Inc. 38.88 1 ['customer', 'supplier']
SSL Sasol Limited 38.88 1 ['customer', 'supplier']
OTTR Otter Tail Corporation 38.88 1 ['customer']
MPUC MPUC 23.09 2
SDPUC SDPUC 23.09 2