08/26/2025 3:46 PM | Westlake (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
08/11/2025 9:15 AM | Sheets Jeffrey Wayne (Reporting) Westlake (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/11/2025 9:16 AM | CREGG ROGER A (Reporting) Westlake (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/11/2025 9:16 AM | Lubel Kimberly S (Reporting) Westlake (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/11/2025 9:16 AM | MCCOLLUM MARK A (Reporting) Westlake (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/11/2025 9:16 AM | Sabat Carolyn Chao (Reporting) Westlake (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/11/2025 9:17 AM | NORTHCUTT R BRUCE (Reporting) Westlake (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/11/2025 9:17 AM | Chao David Tsung-Hung (Reporting) Westlake (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/11/2025 9:18 AM | Chao Catherine T. (Reporting) Westlake (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/11/2025 9:18 AM | Graff Michael J (Reporting) Westlake (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/05/2025 6:25 AM | Westlake (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
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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 | |
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 | |
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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 | |