Ecovyst Inc. SEC filings ECVT
Ecovyst Inc. has 576 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 Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 11-K | Employee savings plan report | Jun 22, 2026 | Dec 31, 2025 |
| 11-K | Employee savings plan report | Jun 20, 2025 | Dec 31, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 11-K | Employee savings plan report | Jun 21, 2024 | Dec 31, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2024 | — |
| UPLOAD | Letter from the SEC | Jan 10, 2024 | — |
| CORRESP | Letter to the SEC | Jan 4, 2024 | — |
| UPLOAD | Letter from the SEC | Dec 19, 2023 | — |
| CORRESP | Letter to the SEC | Nov 30, 2023 | — |
| UPLOAD | Letter from the SEC | Nov 17, 2023 | — |
| 11-K | Employee savings plan report | Jun 27, 2023 | Dec 31, 2022 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2023 | — |
| 11-K | Employee savings plan report | Jun 27, 2022 | Dec 31, 2021 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2022 | — |
| 11-K | Employee savings plan report | Jun 21, 2021 | Dec 31, 2020 |
| SD | Specialized disclosure (conflict minerals) | May 28, 2021 | — |
| NT 10-Q | Filing | May 11, 2021 | Mar 31, 2021 |
| NT 10-K | Filing | Mar 17, 2021 | Dec 31, 2020 |
| 11-K | Employee savings plan report | Jun 16, 2020 | Dec 31, 2019 |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2020 | — |
| 11-K | Employee savings plan report | Jun 14, 2019 | Dec 31, 2018 |
| CERTNYS | Auto-generated paper document | Sep 29, 2017 | — |
| 8-A12B | Filing | Sep 29, 2017 | — |
| EFFECT | Filing | Sep 28, 2017 | — |
| CORRESP | Letter to the SEC | Sep 26, 2017 | — |
| CORRESP | Letter to the SEC | Sep 26, 2017 | — |
| UPLOAD | Letter from the SEC | Sep 25, 2017 | — |
| UPLOAD | Letter from the SEC | Sep 22, 2017 | — |
| UPLOAD | Letter from the SEC | Sep 6, 2017 | — |
| CORRESP | Letter to the SEC | Sep 5, 2017 | — |
| UPLOAD | Letter from the SEC | Aug 28, 2017 | — |
| UPLOAD | Letter from the SEC | Aug 3, 2017 | — |
| UPLOAD | Letter from the SEC | Jul 7, 2017 | — |
Showing 33 filings. 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.