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 | |
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 | |
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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 | |
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 | |
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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) | |
08/06/2024
6:25 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
07/29/2024
5:04 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
07/16/2024
1:00 PM | Gilson Jean-Marc (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
07/15/2024
11:15 AM | Gilson Jean-Marc (Reporting)
Westlake (Issuer)
| Form 3
Initial statement of beneficial ownership of securities | |
07/15/2024
7:32 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
07/01/2024
5:05 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
06/13/2024
7:55 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
05/29/2024
3:33 PM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
05/13/2024
3:31 PM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
05/13/2024
10:24 AM | Buesinger Robert F. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/13/2024
8:22 AM | Chao Catherine T. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/13/2024
8:25 AM | Sabat Carolyn Chao (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/08/2024
12:15 PM | Buesinger Robert F. (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/06/2024
5:20 PM | Buesinger Robert F. (Reporting)
Westlake (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
05/06/2024
8:21 AM | Bender Mark Steven (Reporting)
Westlake (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/03/2024
2:26 PM | Bender Mark Steven (Reporting)
Westlake (Subject)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
05/02/2024
12:28 PM | Westlake (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
05/02/2024
8:41 AM | Holy Jeffrey Adam (Reporting)
Westlake (Issuer)
| Form 3
Initial statement of beneficial ownership of securities | |
05/01/2024
6:27 AM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
04/25/2024
3:59 PM | Westlake (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
