08/01/2024 5:02 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
06/21/2024 3:12 PM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 11-K Annual reports of employee stock purchase, savings and similar plans pursuant to Section 15(d) | |
06/12/2024 3:31 PM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
05/09/2024 5:35 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
05/09/2024 5:30 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K/A | |
05/06/2024 5:31 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
05/06/2024 5:32 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form DEFA14A | |
|
05/02/2024 5:10 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
04/08/2024 4:16 PM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form DEF 14A | |
04/08/2024 4:17 PM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form ARS | |
03/22/2024 4:39 PM | Ecovyst Inc. (Subject) Ecovyst (Subject) Ward Susan F (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/15/2024 4:27 PM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form PRE 14A | |
02/29/2024 3:02 PM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 10-K Annual report pursuant to Section 13 or 15(d) | |
02/28/2024 5:31 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
02/28/2024 5:02 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
01/24/2024 3:41 PM | Catalano Anna C (Reporting) Ecovyst Inc. (Issuer) Ecovyst (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:41 PM | Coxon Robert (Reporting) Ecovyst Inc. (Issuer) Ecovyst (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:41 PM | Bitting Kurt (Reporting) Ecovyst Inc. (Issuer) Ecovyst (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:42 PM | Ecovyst Inc. (Issuer) Ecovyst (Issuer) Vann Kyle D (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:42 PM | Bradley David A. (Reporting) Ecovyst Inc. (Issuer) Ecovyst (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:42 PM | Ecovyst Inc. (Issuer) Ecovyst (Issuer) Koscinski Joseph S. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:42 PM | Ecovyst Inc. (Issuer) Ecovyst (Issuer) Fogarty Kevin Michael (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:42 PM | Ecovyst Inc. (Issuer) Ecovyst (Issuer) Vann George L. Jr. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:43 PM | Ecovyst Inc. (Issuer) Ecovyst (Issuer) Ward Susan F (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:43 PM | Ecovyst Inc. (Issuer) Ecovyst (Issuer) Feehan Michael (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:43 PM | Ecovyst Inc. (Issuer) Ecovyst (Issuer) Whittleston Paul (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/24/2024 3:43 PM | Brown Bryan K. (Reporting) Ecovyst Inc. (Issuer) Ecovyst (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/09/2024 3:21 PM | Bitting Kurt (Reporting) Ecovyst Inc. (Issuer) Ecovyst (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/09/2024 3:21 PM | Ecovyst Inc. (Issuer) Ecovyst (Issuer) Feehan Michael (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/09/2024 3:21 PM | Ecovyst Inc. (Issuer) Ecovyst (Issuer) Whittleston Paul (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/09/2024 3:22 PM | Ecovyst Inc. (Issuer) Ecovyst (Issuer) Vann George L. Jr. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/18/2023 5:16 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
11/28/2023 7:56 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
11/03/2023 3:22 PM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
11/02/2023 5:10 AM | Ecovyst Inc. (Filer) Ecovyst (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |