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 |
|---|---|---|---|
| 8-K |
Current report
Officer or director change
|
Oct 28, 2026 | Oct 22, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 24, 2026 | Aug 21, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2026 | Aug 5, 2026 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Jun 30, 2026 | Jun 30, 2026 |
| 11-K | Employee savings plan report | Jun 22, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Shareholder vote results
|
May 21, 2026 | May 20, 2026 |
| 10-Q | Quarterly report | May 5, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 5, 2026 | May 5, 2026 |
| 8-K |
Current report
Material agreement
|
May 4, 2026 | May 1, 2026 |
| ARS | Annual report to shareholders | Apr 15, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Apr 15, 2026 | May 20, 2026 |
| 10-K | Annual report | Feb 27, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 26, 2026 | Feb 26, 2026 |
| 8-K |
Current report
Acquisition or sale of assets, Officer or director change
|
Jan 7, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 12, 2025 | Dec 8, 2025 |
| 10-Q | Quarterly report | Nov 5, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2025 | Nov 4, 2025 |
| 8-K |
Current report
Material agreement
|
Sep 11, 2025 | Sep 10, 2025 |
| 8-K |
Current report
Officer or director change
|
Aug 11, 2025 | Aug 11, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| 11-K | Employee savings plan report | Jun 20, 2025 | Dec 31, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
May 9, 2025 | May 8, 2025 |
| 10-Q | Quarterly report | May 2, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 1, 2025 | May 1, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 11, 2025 | Apr 10, 2025 |
| ARS | Annual report to shareholders | Apr 8, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 8, 2025 | May 8, 2025 |
| 10-K | Annual report | Feb 28, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 27, 2025 | Feb 27, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Jan 31, 2025 | Jan 30, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 16, 2024 | Dec 10, 2024 |
| 10-Q | Quarterly report | Nov 1, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2024 | Oct 31, 2024 |
| 10-Q | Quarterly report | Aug 2, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2024 | Aug 1, 2024 |
| 11-K | Employee savings plan report | Jun 21, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 12, 2024 | Jun 12, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2024 | — |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results, Other events
|
May 9, 2024 | May 8, 2024 |
| 8-K/A |
Amended current report
Officer or director change
|
May 9, 2024 | Feb 22, 2024 |
| DEFA14A | Additional proxy material | May 6, 2024 | — |
| 8-K |
Current report
Officer or director change
|
May 6, 2024 | May 3, 2024 |
| 10-Q | Quarterly report | May 3, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 2, 2024 | May 2, 2024 |
| ARS | Annual report to shareholders | Apr 8, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Apr 8, 2024 | May 8, 2024 |
| PRE 14A | Preliminary proxy statement | Mar 15, 2024 | May 8, 2024 |
| 10-K | Annual report | Feb 29, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Officer or director change, Other events
|
Feb 28, 2024 | Feb 22, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2024 | Feb 28, 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 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 18, 2023 | Dec 12, 2023 |
| CORRESP | Letter to the SEC | Nov 30, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 28, 2023 | Nov 28, 2023 |
| UPLOAD | Letter from the SEC | Nov 17, 2023 | — |
| 10-Q | Quarterly report | Nov 3, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 10-Q | Quarterly report | Aug 8, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2023 | Aug 3, 2023 |
| 11-K | Employee savings plan report | Jun 27, 2023 | Dec 31, 2022 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2023 | — |
| 8-K |
Current report
Material agreement, Other events
|
May 26, 2023 | May 23, 2023 |
| 424B7 | Filing | May 25, 2023 | — |
| FWP | Free writing prospectus | May 24, 2023 | — |
| 424B7 | Filing | May 24, 2023 | — |
| 8-K |
Current report
Shareholder vote results
|
May 11, 2023 | May 10, 2023 |
| 10-Q | Quarterly report | May 5, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 4, 2023 | May 4, 2023 |
| ARS | Annual report to shareholders | Apr 13, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | Apr 13, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Apr 11, 2023 | Apr 5, 2023 |
| 8-K |
Current report
Material agreement, Other events
|
Mar 6, 2023 | Mar 2, 2023 |
| 424B7 | Filing | Mar 6, 2023 | — |
| FWP | Free writing prospectus | Mar 2, 2023 | — |
| 424B7 | Filing | Mar 2, 2023 | — |
| 10-K | Annual report | Feb 28, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2023 | Feb 28, 2023 |
| 8-K |
Current report
Officer or director change
|
Dec 22, 2022 | Dec 16, 2022 |
| 8-K |
Current report
Officer or director change
|
Nov 25, 2022 | Nov 21, 2022 |
| 8-K |
Current report
Material agreement, Other events
|
Nov 15, 2022 | Nov 14, 2022 |
| 424B7 | Filing | Nov 15, 2022 | — |
| FWP | Free writing prospectus | Nov 15, 2022 | — |
| 424B7 | Filing | Nov 14, 2022 | — |
| 8-K |
Current report
Officer or director change
|
Nov 7, 2022 | Nov 3, 2022 |
| 10-Q | Quarterly report | Nov 4, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Officer or director change
|
Nov 2, 2022 | Oct 27, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 1, 2022 | Nov 1, 2022 |
| 8-K |
Current report
Material agreement, Other events
|
Aug 5, 2022 | Aug 3, 2022 |
| 424B7 | Filing | Aug 4, 2022 | — |
| FWP | Free writing prospectus | Aug 3, 2022 | — |
| 424B7 | Filing | Aug 3, 2022 | — |
| 10-Q | Quarterly report | Aug 1, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Officer or director change
|
Aug 1, 2022 | Jul 27, 2022 |
| 8-K/A |
Amended current report
Officer or director change
|
Aug 1, 2022 | Apr 25, 2022 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2022 | Jul 29, 2022 |
| 11-K | Employee savings plan report | Jun 27, 2022 | Dec 31, 2021 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2022 | — |
| 8-K |
Current report
Shareholder vote results
|
May 31, 2022 | May 26, 2022 |
| 10-Q | Quarterly report | May 3, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Officer or director change, Other events
|
Apr 29, 2022 | Apr 25, 2022 |
| DEF 14A | Proxy statement | Apr 29, 2022 | May 26, 2022 |
| 8-K |
Current report
Results of operations
|
Apr 28, 2022 | Apr 28, 2022 |
| 10-K | Annual report | Mar 1, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2022 | Feb 25, 2022 |
| S-8 | Employee stock plan registration | Jan 14, 2022 | — |
| 8-K |
Current report
Material agreement, Other events
|
Nov 23, 2021 | Nov 18, 2021 |
| 424B7 | Filing | Nov 19, 2021 | — |
| 424B7 | Filing | Nov 16, 2021 | — |
| 8-K |
Current report
Other events
|
Nov 16, 2021 | Dec 31, 2020 |
| 10-Q | Quarterly report | Nov 9, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2021 | Nov 9, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 14, 2021 | Sep 14, 2021 |
| 10-Q | Quarterly report | Aug 9, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2021 | Aug 5, 2021 |
| 8-K/A |
Amended current report
Officer or director change
|
Aug 4, 2021 | Mar 22, 2021 |
| 8-K |
Current report
Agreement ended, Acquisition or sale of assets, Officer or director change, Bylaw or fiscal year change, Other events
|
Aug 3, 2021 | Aug 1, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 23, 2021 | Jul 22, 2021 |
| 8-K |
Current report
Material agreement
|
Jul 15, 2021 | Jul 12, 2021 |
| 8-K |
Current report
Material agreement
|
Jun 30, 2021 | Jun 24, 2021 |
| 11-K | Employee savings plan report | Jun 21, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Jun 11, 2021 | Jun 9, 2021 |
| SD | Specialized disclosure (conflict minerals) | May 28, 2021 | — |
| 10-Q | Quarterly report | May 17, 2021 | Mar 31, 2021 |
| NT 10-Q | Filing | May 11, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 6, 2021 | May 6, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Apr 30, 2021 | Apr 29, 2021 |
| 424B7 | Filing | Apr 29, 2021 | — |
| 8-K |
Current report
Material agreement, Other events
|
Apr 29, 2021 | Apr 28, 2021 |
| 424B7 | Filing | Apr 26, 2021 | — |
| S-3ASR | Automatic shelf registration | Apr 26, 2021 | — |
| 8-K |
Current report
Results of operations, Other events
|
Apr 26, 2021 | Apr 26, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 8, 2021 | Apr 8, 2021 |
| DEF 14A | Proxy statement | Apr 1, 2021 | Apr 29, 2021 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 23, 2021 | Mar 22, 2021 |
| 10-K | Annual report | Mar 17, 2021 | Dec 31, 2020 |
| NT 10-K | Filing | Mar 17, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Officer or director change
|
Mar 16, 2021 | Mar 10, 2021 |
| 8-K/A |
Amended current report
Results of operations
|
Mar 16, 2021 | Mar 9, 2021 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2021 | Mar 9, 2021 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure, Other events
|
Mar 4, 2021 | Feb 28, 2021 |
| 8-K |
Current report
Acquisition or sale of assets, Officer or director change, Other events
|
Dec 18, 2020 | Dec 14, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 10, 2020 | Nov 10, 2020 |
| 10-Q | Quarterly report | Nov 3, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2020 | Oct 30, 2020 |
| 8-K |
Current report
Material agreement, Other events
|
Oct 16, 2020 | Oct 15, 2020 |
| 10-Q | Quarterly report | Aug 3, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2020 | Jul 30, 2020 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Jul 28, 2020 | Jul 22, 2020 |
| 11-K | Employee savings plan report | Jun 16, 2020 | Dec 31, 2019 |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2020 | — |
| 8-K |
Current report
Officer or director change
|
Jun 1, 2020 | May 28, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
May 28, 2020 | May 28, 2020 |
| 10-Q | Quarterly report | May 11, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 5, 2020 | May 5, 2020 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 5, 2020 | Apr 30, 2020 |
| 8-K/A |
Amended current report
Officer or director change
|
Apr 29, 2020 | Feb 29, 2020 |
| DEF 14A | Proxy statement | Mar 26, 2020 | Apr 30, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Mar 26, 2020 | Mar 20, 2020 |
| 8-K |
Current report
Other events
|
Mar 12, 2020 | Mar 12, 2020 |
| 8-K |
Current report
Officer or director change
|
Mar 5, 2020 | Feb 29, 2020 |
| 10-K | Annual report | Feb 27, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 27, 2020 | Feb 27, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 20, 2020 | Feb 20, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Feb 13, 2020 | Feb 7, 2020 |
| 8-K |
Current report
Results of operations
|
Jan 27, 2020 | Jan 27, 2020 |
| 8-K |
Current report
Officer or director change
|
Dec 3, 2019 | Nov 26, 2019 |
| 8-K |
Current report
Officer or director change
|
Nov 21, 2019 | Nov 15, 2019 |
| 10-Q | Quarterly report | Nov 5, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Officer or director change
|
Nov 1, 2019 | Oct 28, 2019 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2019 | Oct 31, 2019 |
| 10-Q | Quarterly report | Aug 8, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2019 | Aug 8, 2019 |
| 11-K | Employee savings plan report | Jun 14, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
May 16, 2019 | May 16, 2019 |
| 10-Q | Quarterly report | May 10, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Results of operations
|
May 9, 2019 | May 9, 2019 |
| 8-K |
Current report
Shareholder vote results
|
May 6, 2019 | May 2, 2019 |
| DEFA14A | Additional proxy material | Apr 19, 2019 | — |
| DEF 14A | Proxy statement | Mar 26, 2019 | May 2, 2019 |
| 8-K |
Current report
Results of operations
|
Mar 22, 2019 | Mar 22, 2019 |
| 10-K | Annual report | Mar 1, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Feb 21, 2019 | Feb 21, 2019 |
| 8-K |
Current report
Officer or director change
|
Dec 26, 2018 | Dec 21, 2018 |
| 10-Q | Quarterly report | Nov 7, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2018 | Nov 6, 2018 |
| S-8 | Employee stock plan registration | Oct 1, 2018 | — |
| 10-Q | Quarterly report | Aug 10, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 9, 2018 | Aug 6, 2018 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2018 | Aug 9, 2018 |
| 10-Q | Quarterly report | May 11, 2018 | Mar 31, 2018 |
| 8-K |
Current report
Results of operations
|
May 10, 2018 | May 10, 2018 |
| 8-K |
Current report
Shareholder vote results
|
May 8, 2018 | May 4, 2018 |
| DEF 14A | Proxy statement | Apr 5, 2018 | May 4, 2018 |
| 10-K | Annual report | Mar 22, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 22, 2018 | Mar 19, 2018 |
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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)
Other Chemicals & Allied Products companies
- Akzo Nobel NV AKZOY
- Solstice Advanced Materials Inc. SOLS
- Balchem Corp BCPC
- Perimeter Solutions, Inc. PRM
- Ingevity Corp NGVT
- Innospec Inc. IOSP
- Chemours Co CC
- OLIN Corp OLN
Source: SEC EDGAR filings. This is company-reported data, not investment advice.