08/05/2025
6:25 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
06/17/2025
5:01 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
06/09/2025
12:59 PM | Buesinger Robert F. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/23/2025
4:00 PM | Westlake (Filer)
| Form SD
Specialized Disclosure Report | |
05/12/2025
3:45 PM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
05/02/2025
2:18 PM | Westlake (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
05/02/2025
6:25 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
04/15/2025
5:00 PM | Szwejbka Scott Thomas (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
04/15/2025
5:00 PM | Buesinger Robert F. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
04/14/2025
5:00 PM | Szwejbka Scott Thomas (Reporting)
Westlake (Issuer)
| Form 3
Initial statement of beneficial ownership of securities | |
03/28/2025
7:23 AM | Westlake (Filer)
| Form DEF 14A | |
Get the Latest News and Ratings for WLK and Related Stocks Enter your email address below to receive the latest news and analysts' ratings for Westlake and its competitors with MarketBeat's FREE daily newsletter. |
03/28/2025
7:27 AM | Westlake (Filer)
| Form DEFA14A | |
03/28/2025
7:30 AM | Westlake (Filer)
| Form ARS | |
03/07/2025
6:00 AM | Chao John Tsung-chen (Reporting)
Westlake (Issuer)
| Form 4/A | |
03/06/2025
8:05 AM | Chao John Tsung-chen (Reporting)
Westlake (Issuer)
| Form 4/A | |
03/04/2025
4:30 PM | Gilson Jean-Marc (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
3:16 PM | Westlake (Filer)
| Form 10-K
Annual report pursuant to Section 13 or 15(d) | |
02/24/2025
1:10 PM | Bender Mark Steven (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/24/2025
1:10 PM | Buesinger Robert F. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/24/2025
1:10 PM | Chao Albert (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/24/2025
1:11 PM | Chao James (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/24/2025
1:13 PM | Janssens Thomas J. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/24/2025
1:14 PM | Ederington L. Benjamin (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/24/2025
1:14 PM | Holy Jeffrey Adam (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/24/2025
1:14 PM | Chao John Tsung-chen (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/24/2025
1:14 PM | Gilson Jean-Marc (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/24/2025
6:28 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
02/20/2025
1:36 PM | Holy Jeffrey Adam (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/20/2025
1:38 PM | Janssens Thomas J. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/20/2025
1:39 PM | Bender Mark Steven (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/20/2025
1:39 PM | Buesinger Robert F. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/20/2025
1:40 PM | Ederington L. Benjamin (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/20/2025
1:41 PM | Chao John Tsung-chen (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/20/2025
1:30 PM | Chao Albert (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/20/2025
1:34 PM | Chao James (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/19/2025
8:18 AM | Ederington L. Benjamin (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/19/2025
8:19 AM | Janssens Thomas J. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/10/2024
6:24 PM | CREGG ROGER A (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/10/2024
6:05 PM | CREGG ROGER A (Reporting)
Westlake (Issuer)
| Form 3
Initial statement of beneficial ownership of securities | |
12/02/2024
6:49 AM | Chao David Tsung-Hung (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
11/26/2024
6:12 PM | Chao David Tsung-Hung (Reporting)
Westlake (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
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11/25/2024
7:21 AM | Chao David Tsung-Hung (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
11/21/2024
3:58 PM | Chao David Tsung-Hung (Reporting)
Westlake (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
11/06/2024
9:49 AM | Westlake (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
11/05/2024
6:26 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
09/03/2024
8:39 AM | Chao James (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/26/2024
8:40 AM | Janssens Thomas J. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/23/2024
4:53 PM | Janssens Thomas J. (Reporting)
Westlake (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
08/19/2024
1:50 PM | Chao Albert (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/15/2024
10:00 AM | Buesinger Robert F. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/15/2024
10:00 AM | Bender Mark Steven (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/15/2024
10:00 AM | Ederington L. Benjamin (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/12/2024
10:26 AM | Sabat Carolyn Chao (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/12/2024
10:23 AM | Chao David Tsung-Hung (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/12/2024
10:24 AM | Graff Michael J (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/12/2024
10:24 AM | Haas Marius (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/12/2024
10:24 AM | MCCOLLUM MARK A (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/12/2024
10:25 AM | Lubel Kimberly S (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/12/2024
10:25 AM | NORTHCUTT R BRUCE (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/12/2024
10:26 AM | Sheets Jeffrey Wayne (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/12/2024
10:26 AM | Chao Catherine T. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/12/2024
5:07 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
08/09/2024
11:30 AM | Westlake (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
