Westlake Corporation (WLK) SEC Filings
Everything WLK has filed with the SEC, newest first. An 8-K shows
what it was about where we have classified it — an earnings release and a
change of chief executive are both 8-Ks, and the form number alone doesn't
separate them.
All
10-K
10-Q
4
4/A
8-K · Executive Change
8-K · Guidance Update
8-K · Reg Fd
8-K · Restructuring
72 filings
Date
Form
Filing
Sep 29, 2026
8-K
Guidance Update · Reg Fd · Restructuring
View filing
Sep 1, 2026
4
View filing
Aug 31, 2026
8-K
Executive Change
View filing
Aug 17, 2026
4
View filing
Aug 17, 2026
4
View filing
Aug 17, 2026
4
View filing
Aug 17, 2026
4
View filing
Aug 17, 2026
4
View filing
Aug 17, 2026
4
View filing
Aug 17, 2026
4
View filing
Aug 17, 2026
4
View filing
Aug 17, 2026
4
View filing
Aug 17, 2026
4
View filing
Aug 11, 2026
4
View filing
Aug 10, 2026
4
View filing
Aug 10, 2026
4
View filing
Aug 10, 2026
4
View filing
Aug 10, 2026
4
View filing
Aug 10, 2026
4
View filing
Aug 10, 2026
4
View filing
Aug 10, 2026
4
View filing
Aug 10, 2026
4
View filing
Aug 10, 2026
4
View filing
Aug 5, 2026
10-Q
View filing
Jun 16, 2026
4
View filing
May 14, 2026
4
View filing
May 6, 2026
10-Q
View filing
Apr 6, 2026
4
View filing
Mar 31, 2026
4
View filing
Mar 30, 2026
4
View filing
Mar 6, 2026
4/A
View filing
Mar 2, 2026
4
View filing
Feb 26, 2026
10-K
View filing
Feb 24, 2026
4
View filing
Feb 23, 2026
4
View filing
Feb 23, 2026
4
View filing
Feb 23, 2026
4
View filing
Feb 23, 2026
4
View filing
Feb 23, 2026
4
View filing
Feb 23, 2026
4
View filing
Feb 23, 2026
4
View filing
Feb 23, 2026
4
View filing
Feb 23, 2026
4
View filing
Feb 19, 2026
4
View filing
Feb 19, 2026
4
View filing
Feb 19, 2026
4
View filing
Feb 19, 2026
4
View filing
Feb 19, 2026
4
View filing
Feb 19, 2026
4
View filing
Feb 19, 2026
4
View filing
Feb 19, 2026
4
View filing
Dec 23, 2025
4
View filing
Dec 10, 2025
4
View filing
Oct 31, 2025
10-Q
View filing
Oct 3, 2025
4
View filing
Aug 29, 2025
4
View filing
Aug 6, 2025
10-Q
View filing
May 2, 2025
10-Q
View filing
Feb 25, 2025
10-K
View filing
Nov 6, 2024
10-Q
View filing
Aug 9, 2024
10-Q
View filing
May 2, 2024
10-Q
View filing
Feb 21, 2024
10-K
View filing
Nov 2, 2023
10-Q
View filing
Aug 3, 2023
10-Q
View filing
May 4, 2023
10-Q
View filing
Feb 22, 2023
10-K
View filing
Nov 3, 2022
10-Q
View filing
Aug 3, 2022
10-Q
View filing
May 4, 2022
10-Q
View filing
Feb 23, 2022
10-K
View filing
Nov 3, 2021
10-Q
View filing
Filings are sourced from EDGAR and open on the SEC's own site.
Classification of 8-K events is ours and is not part of the filing.