WESTLAKE CORP (WLK) Stock Ownership

NYSE:WLK • US9604131022

Current stock price

117.84 USD
+1.84 (+1.59%)
Last:

WLK Ownership information

WLK Ownership Chart.WLK Ownership Chart: showing Insider, Institutional ownership and shares available to the public.WLK Ownership.InsiderInstitutionalPublic



Shares Outstanding127.91M
Float32.71M
Float Short Interest Percentage15.37%
Owners (insider)1.32%
Owners (institutional)36.75%
Owners (insider) change2.68%
Owners (institutional) change7.75%
WLK Institutional Ownership HistoryWLK Institutional Ownership HistoryWLK Institutional Ownership History Sep 2021 Mar 2022 Sep 2022 Mar 2023 Sep 2023 Mar 2024 Sep 2024 Mar 2025 Sep 2025 10M 20M 30M 40M
WLK Historical Insider Transactions ChartWLK Historical Insider Buy and Sell Transactions ChartWLK Historical Insider Transactions Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 Mar 2026 0 20K -20K 40K -40K 60K 80K
DateNameTypeSharesPriceAmount
Mar 27, 2026Bender Mark StevenOpen Market Sale16413112.54$ 1,847,036.95
Feb 27, 2026Bender Mark StevenOption Excercise1269376.42$ 969,948.81
Feb 27, 2026Bender Mark StevenOther Disposition1269398.20$ 1,246,452.60
Feb 27, 2026Bender Mark StevenOpen Market Sale17409100.92$ 1,756,996.89
Feb 20, 2026Szwejbka Scott ThomasOption Excercise9194.10$ 8,563.10
Feb 20, 2026Holy Jeffrey AdamOption Excercise8194.10$ 7,622.10
Feb 20, 2026Ederington L. BenjaminOption Excercise35794.10$ 33,594.41
Feb 20, 2026Buesinger Robert F.Option Excercise32694.10$ 30,676.93
Feb 20, 2026Bender Mark StevenOption Excercise44594.10$ 41,874.06
Feb 20, 2026Chao John Tsung-chenOption Excercise9194.10$ 8,563.10
Feb 20, 2026Chao AlbertOption Excercise250194.10$ 235,346.60
Feb 20, 2026Chao JamesOption Excercise156994.10$ 147,644.47
Feb 19, 2026Holy Jeffrey AdamGrant2640.00$ 0.00
Feb 19, 2026Ederington L. BenjaminGrant14250.00$ 0.00
Feb 19, 2026Buesinger Robert F.Grant13010.00$ 0.00
Feb 19, 2026Bender Mark StevenGrant17770.00$ 0.00
Feb 19, 2026Chao John Tsung-chenGrant2130.00$ 0.00
Feb 19, 2026Chao AlbertGrant61930.00$ 0.00
Feb 19, 2026Chao JamesGrant38840.00$ 0.00
Feb 19, 2026Szwejbka Scott ThomasGrant3650.00$ 0.00
Feb 18, 2026Szwejbka Scott ThomasOption Excercise29598.95$ 29,190.25
Feb 18, 2026Holy Jeffrey AdamOption Excercise21398.95$ 21,076.35
Feb 18, 2026Ederington L. BenjaminOption Excercise97898.95$ 96,773.10
Feb 18, 2026Chao JamesOption Excercise266498.95$ 263,602.80
Feb 18, 2026Chao John Tsung-chenOption Excercise24298.95$ 23,945.90
Feb 18, 2026Chao AlbertOption Excercise508998.95$ 503,556.55
Feb 18, 2026Buesinger Robert F.Option Excercise90398.95$ 89,351.85
Feb 18, 2026Bender Mark StevenOption Excercise120998.95$ 119,630.55
Feb 17, 2026Szwejbka Scott ThomasOption Excercise9770.00$ 0.00
Feb 17, 2026Holy Jeffrey AdamOption Excercise7060.00$ 0.00
Feb 17, 2026Ederington L. BenjaminOption Excercise38090.00$ 0.00
Feb 17, 2026Chao JamesOption Excercise103820.00$ 0.00
Feb 17, 2026Chao John Tsung-chenOption Excercise5700.00$ 0.00
Feb 17, 2026Chao AlbertOption Excercise165550.00$ 0.00
Feb 17, 2026Buesinger Robert F.Option Excercise34780.00$ 0.00
Feb 17, 2026Bender Mark StevenOption Excercise47510.00$ 0.00
Dec 22, 2025Chao AlbertOption Excercise8167344.42$ 3,627,914.66
Dec 22, 2025Chao AlbertOpen Market Sale4083673.57$ 3,004,373.19
Dec 10, 2025CREGG ROGER AOption Excercise1339$ 0.00
Oct 2, 2025Szwejbka Scott ThomasOption Excercise384276.70$ 294,681.40
Oct 1, 2025Szwejbka Scott ThomasOption Excercise108400.00$ 0.00
Aug 28, 2025Chao JamesOther Disposition151400.00$ 0.00
Aug 9, 2025Graff Michael JOption Excercise1128$ 0.00
Aug 9, 2025NORTHCUTT R BRUCEOption Excercise1128$ 0.00
Aug 9, 2025Sabat Carolyn ChaoOption Excercise1128$ 0.00
Aug 9, 2025Chao Catherine T.Option Excercise1128$ 0.00
Aug 9, 2025MCCOLLUM MARK AOption Excercise1128$ 0.00
Aug 9, 2025Lubel Kimberly SOption Excercise1128$ 0.00
Aug 9, 2025Chao David Tsung-HungOption Excercise1128$ 0.00
Aug 9, 2025Sheets Jeffrey WayneOption Excercise1128$ 0.00