Ecovyst Inc.
ECVTNYSECIK 1708035MaterialsFiscal year ends Dec 31
Reports and events: 173 filings
Newest first, by EDGAR acceptance time (Eastern). Each filing’s page lists its documents on sec.gov and, for 10-K and 10-Q reports, the extracted sections.
What the forms are: 10-K, 10-Q, 8-K, Form 4, DEF 14A, Schedule 13D, Schedule 13G, amendments, accession numbers.
| Filed | Form | What it is | Accession number |
|---|---|---|---|
| 2026-08-2406:15 ET | 8-K | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-361724 |
| 2026-08-0616:03 ET | 10-Q | Quarterly reportPeriod 2026-06-30 | 0001708035-26-000090 |
| 2026-08-0506:00 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-26-000087 |
| 2026-06-3016:05 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-290479 |
| 2026-05-2116:02 ET | 8-K | 5.07 Shareholder vote results | 0001708035-26-000070 |
| 2026-05-0516:00 ET | 10-Q | Quarterly reportPeriod 2026-03-31 | 0001708035-26-000067 |
| 2026-05-0506:00 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-26-000063 |
| 2026-05-0407:44 ET | 8-K | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001193125-26-202584 |
| 2026-04-1517:16 ET | DEF 14A | Proxy statementPeriod 2026-05-20 | 0001140361-26-014838 |
| 2026-02-2716:01 ET | 10-K | Annual reportPeriod 2025-12-31 | 0001708035-26-000053 |
| 2026-02-2606:02 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-26-000047 |
| 2026-01-0716:15 ET | 8-K | 2.01 Completion of an acquisition or disposition; 2.04 Item not in the standard list; 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001708035-26-000010 |
| 2025-12-1216:30 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001193125-25-317640 |
| 2025-11-0516:01 ET | 10-Q | Quarterly reportPeriod 2025-09-30 | 0001708035-25-000118 |
| 2025-11-0406:02 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-25-000115 |
| 2025-09-1116:44 ET | 8-K | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001193125-25-201371 |
| 2025-08-1116:05 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001193125-25-177926 |
| 2025-08-0716:02 ET | 10-Q | Quarterly reportPeriod 2025-06-30 | 0001708035-25-000108 |
| 2025-08-0706:00 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-25-000104 |
| 2025-07-0216:28 ET | SCHEDULE 13D/A | Ownership report, active investor, amended | 0000950157-25-000552 |
| 2025-05-0916:01 ET | 8-K | 5.07 Shareholder vote results | 0001708035-25-000086 |
| 2025-05-0216:00 ET | 10-Q | Quarterly reportPeriod 2025-03-31 | 0001708035-25-000083 |
| 2025-05-0106:01 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-25-000076 |
| 2025-04-1107:07 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001193125-25-078475 |
| 2025-04-0811:55 ET | DEF 14A | Proxy statementPeriod 2025-05-08 | 0001140361-25-012747 |
| 2025-02-2816:01 ET | 10-K | Annual reportPeriod 2024-12-31 | 0001708035-25-000070 |
| 2025-02-2706:02 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-25-000063 |
| 2025-01-3108:12 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001193125-25-017743 |
| 2024-12-1616:18 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001708035-24-000120 |
| 2024-11-0116:07 ET | 10-Q | Quarterly reportPeriod 2024-09-30 | 0001708035-24-000117 |
| 2024-10-3106:02 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-24-000114 |
| 2024-08-0216:01 ET | 10-Q | Quarterly reportPeriod 2024-06-30 | 0001708035-24-000101 |
| 2024-08-0106:02 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-24-000097 |
| 2024-06-1216:31 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001193125-24-159982 |
| 2024-05-0906:35 ET | 8-K | 5.03 Amendment to articles or bylaws; 5.07 Shareholder vote results; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-24-134734 |
| 2024-05-0906:30 ET | 8-K/A | 5.02 Departure or appointment of officers or directors | 0001193125-24-134730 |
| 2024-05-0606:31 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001193125-24-131364 |
| 2024-05-0316:08 ET | 10-Q | Quarterly reportPeriod 2024-03-31 | 0001708035-24-000083 |
| 2024-05-0206:10 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-24-000080 |
| 2024-04-0817:16 ET | DEF 14A | Proxy statementPeriod 2024-05-08 | 0001140361-24-018656 |
| 2024-02-2916:02 ET | 10-K | Annual reportPeriod 2023-12-31 | 0001708035-24-000070 |
| 2024-02-2806:31 ET | 8-K | 5.02 Departure or appointment of officers or directors; 8.01 Other events | 0001193125-24-049054 |
| 2024-02-2806:02 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-24-000065 |
| 2023-12-1806:16 ET | 8-K | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure | 0001193125-23-297060 |
| 2023-11-2808:56 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-23-283808 |
| 2023-11-0316:22 ET | 10-Q | Quarterly reportPeriod 2023-09-30 | 0001708035-23-000039 |
| 2023-11-0206:10 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-23-000035 |
| 2023-08-0808:18 ET | 10-Q | Quarterly reportPeriod 2023-06-30 | 0001708035-23-000029 |
| 2023-08-0306:32 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001708035-23-000026 |
| 2023-06-2716:07 ET | SC 13D/A | Ownership report, active investor, amended | 0000950157-23-000706 |
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:15 ET. Listed shows no prices and gives no investment advice.