Ecovyst Inc. SEC filings ECVT
Ecovyst Inc. has 573 filings in SEC EDGAR's recent list, going back to Jun 9, 2017. Its latest annual report, Form ARS, was filed on Apr 15, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 28, 2026 (officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Sep 14, 2026 | Sep 10, 2026 |
| 4 | Insider transaction | Aug 26, 2026 | Aug 24, 2026 |
| 3 | Initial insider ownership | Aug 26, 2026 | Aug 24, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 31, 2026 | — |
| 144 | Notice of proposed sale | Jul 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 14, 2026 | — |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 144 | Notice of proposed sale | Jun 2, 2026 | — |
| 4 | Insider transaction | May 27, 2026 | May 26, 2026 |
| 3 | Initial insider ownership | May 26, 2026 | May 20, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 8, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 24, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 16, 2026 | Mar 12, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Jan 26, 2026 | Jan 22, 2026 |
| 4 | Insider transaction | Jan 26, 2026 | Jan 22, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 144 | Notice of proposed sale | Nov 7, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 2, 2025 | — |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Jan 23, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 23, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 23, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 23, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 23, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 5, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 5, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 5, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 5, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 5, 2025 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 8, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 21, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Sep 10, 2024 | — |
| 4 | Insider transaction | Aug 8, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 6, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | Aug 6, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | Aug 6, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | May 22, 2024 | May 20, 2024 |
| 3 | Initial insider ownership | May 17, 2024 | May 8, 2024 |
| 4 | Insider transaction | Mar 26, 2024 | Mar 22, 2024 |
| 144 | Notice of proposed sale | Mar 22, 2024 | — |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| 3 | Initial insider ownership | Mar 8, 2024 | Mar 1, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Jan 26, 2024 | — |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 9, 2024 | Jan 5, 2024 |
| 4 | Insider transaction | Jan 9, 2024 | Jan 5, 2024 |
| 4 | Insider transaction | Jan 9, 2024 | Jan 5, 2024 |
| 4 | Insider transaction | Jan 9, 2024 | Jan 5, 2024 |
| 4 | Insider transaction | Aug 25, 2023 | Aug 23, 2023 |
| 4 | Insider transaction | Aug 25, 2023 | Aug 23, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 1, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 1, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 1, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 1, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 27, 2023 | — |
| 4 | Insider transaction | May 26, 2023 | May 26, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | May 26, 2023 | — |
| 4 | Insider transaction | Mar 9, 2023 | Mar 7, 2023 |
| 4 | Insider transaction | Mar 9, 2023 | Mar 8, 2023 |
| 4 | Insider transaction | Mar 9, 2023 | Mar 8, 2023 |
| 4 | Insider transaction | Mar 9, 2023 | Mar 7, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 3, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 7, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 7, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2023 | — |
| 4 | Insider transaction | Jan 24, 2023 | Jan 20, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 18, 2023 | Jan 16, 2023 |
| 4 | Insider transaction | Jan 9, 2023 | Jan 5, 2023 |
| 4 | Insider transaction | Jan 9, 2023 | Jan 5, 2023 |
| 3 | Initial insider ownership | Jan 4, 2023 | Jan 1, 2023 |
| 4 | Insider transaction | Dec 9, 2022 | Dec 7, 2022 |
| 4 | Insider transaction | Nov 18, 2022 | Nov 16, 2022 |
| 4 | Insider transaction | Nov 18, 2022 | Nov 17, 2022 |
| 4 | Insider transaction | Nov 18, 2022 | Nov 16, 2022 |
| 4 | Insider transaction | Nov 18, 2022 | Nov 17, 2022 |
| 4 | Insider transaction | Nov 18, 2022 | Nov 16, 2022 |
| 4 | Insider transaction | Sep 16, 2022 | Sep 15, 2022 |
| 4 | Insider transaction | Aug 12, 2022 | Aug 11, 2022 |
| 3 | Initial insider ownership | Aug 12, 2022 | Aug 8, 2022 |
| 4 | Insider transaction | Aug 10, 2022 | Aug 8, 2022 |
| 4 | Insider transaction | Aug 10, 2022 | Aug 8, 2022 |
| 4 | Insider transaction | Aug 9, 2022 | Aug 5, 2022 |
| 4 | Insider transaction | Aug 8, 2022 | Aug 4, 2022 |
| 4 | Insider transaction | Aug 8, 2022 | Aug 4, 2022 |
| 4 | Insider transaction | Aug 8, 2022 | Aug 5, 2022 |
| 4 | Insider transaction | Aug 8, 2022 | Aug 4, 2022 |
| 4 | Insider transaction | Aug 8, 2022 | Aug 4, 2022 |
| 4 | Insider transaction | Aug 8, 2022 | Aug 4, 2022 |
| 4 | Insider transaction | Aug 8, 2022 | Aug 4, 2022 |
| 4 | Insider transaction | Aug 2, 2022 | Jul 29, 2022 |
| 3 | Initial insider ownership | Aug 2, 2022 | Jul 27, 2022 |
| 4 | Insider transaction | May 23, 2022 | May 19, 2022 |
| 4 | Insider transaction | May 23, 2022 | May 20, 2022 |
| 4 | Insider transaction | May 16, 2022 | May 12, 2022 |
| 4 | Insider transaction | May 16, 2022 | May 12, 2022 |
| 4 | Insider transaction | May 12, 2022 | May 10, 2022 |
| 4 | Insider transaction | May 9, 2022 | May 5, 2022 |
| 4 | Insider transaction | May 5, 2022 | May 3, 2022 |
| 4 | Insider transaction | May 5, 2022 | May 3, 2022 |
| 4 | Insider transaction | May 5, 2022 | May 3, 2022 |
| 3 | Initial insider ownership | May 4, 2022 | Apr 27, 2022 |
| 3 | Initial insider ownership | May 4, 2022 | Apr 27, 2022 |
| 3 | Initial insider ownership | May 4, 2022 | Apr 27, 2022 |
| 4 | Insider transaction | Mar 3, 2022 | Mar 1, 2022 |
| 4 | Insider transaction | Mar 3, 2022 | Mar 1, 2022 |
| 4 | Insider transaction | Mar 3, 2022 | Mar 1, 2022 |
| 4 | Insider transaction | Mar 3, 2022 | Mar 1, 2022 |
| 4 | Insider transaction | Mar 3, 2022 | Mar 1, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| 4 | Insider transaction | Jan 24, 2022 | Jan 20, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 17, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 17, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 17, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 17, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 17, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 17, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 17, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 17, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 17, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 17, 2022 |
| 4 | Insider transaction | Jan 7, 2022 | Jan 5, 2022 |
| 4 | Insider transaction | Jan 7, 2022 | Jan 5, 2022 |
| 4 | Insider transaction | Jan 7, 2022 | Jan 5, 2022 |
| 4 | Insider transaction | Dec 20, 2021 | Dec 20, 2021 |
| 4 | Insider transaction | Dec 20, 2021 | Dec 20, 2021 |
| 4 | Insider transaction | Dec 20, 2021 | Dec 20, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 20, 2021 | — |
| 4 | Insider transaction | Nov 23, 2021 | Nov 19, 2021 |
| 4 | Insider transaction | Nov 23, 2021 | Nov 23, 2021 |
| 4 | Insider transaction | Nov 23, 2021 | Nov 23, 2021 |
| 4 | Insider transaction | Nov 23, 2021 | Nov 23, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 23, 2021 | — |
| 3 | Initial insider ownership | Aug 13, 2021 | Aug 5, 2021 |
| 4 | Insider transaction | May 5, 2021 | May 5, 2021 |
| 4 | Insider transaction | May 5, 2021 | May 5, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | May 5, 2021 | — |
| 4 | Insider transaction | May 5, 2021 | May 5, 2021 |
| 4 | Insider transaction | May 3, 2021 | May 3, 2021 |
| 4 | Insider transaction | May 3, 2021 | May 3, 2021 |
| 4 | Insider transaction | May 3, 2021 | May 3, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | May 3, 2021 | — |
| 4 | Insider transaction | May 3, 2021 | Apr 29, 2021 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Chemicals & Allied Products (SIC 2800)
- Listed as
- ECVT (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Wayne, PA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1708035
- Former names
- PQ Group Holdings Inc. (until Jul 23, 2021)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.