Ecovyst Inc. SEC filings

Filings

Every filing, newest first. MAJOR and NOTABLE filings lead the app's feed; ROUTINE ones are kept here.

1. ROUTINE4Ecovyst Inc.ECVTSep 14

   Patti A. Humble, insider filing for ECVT

   Patti A. Humble, reporting

2. ROUTINE3Ecovyst Inc.ECVTAug 26

   2 insider filings

   Laurie Bergman, new insider at ECVT

   Show all 2

   • 3New insider at ECVTAug 26
   • 4Insider filing for ECVTAug 26

   Laurie Bergman, reporting

3. ROUTINE8-KEcovyst Inc.ECVTAug 24

   Current report

4. NOTABLE10-QEcovyst Inc.ECVTAug 6

   Quarterly report

5. ROUTINE8-KEcovyst Inc.ECVTAug 5

   Current report

6. ROUTINESCHEDULE 13GEcovyst Inc.ECVTJul 31

   Ownership stake disclosure by VANGUARD PORTFOLIO MANAGEMENT LLC

   VANGUARD PORTFOLIO MANAGEMENT LLC, filed by

7. ROUTINE144Ecovyst Inc.ECVTJul 17

   Susan F Ward, planned sale of ECVT shares

   Susan F Ward, reporting

8. ROUTINESCHEDULE 13G/AEcovyst Inc.ECVTJul 14

   Ownership stake disclosure by DIMENSIONAL FUND ADVISORS LP (amended)

   DIMENSIONAL FUND ADVISORS LP, filed by

9. ROUTINE8-KEcovyst Inc.ECVTJun 30

   Current report

10. ROUTINE11-KEcovyst Inc.ECVTJun 22

    Employee plan annual report

11. ROUTINE4Ecovyst Inc.ECVTJun 3

    Sarah Lorance, insider filing for ECVT

    Sarah Lorance, reporting

12. ROUTINE144Ecovyst Inc.ECVTJun 2

    Sarah Lorance, planned sale of ECVT shares

    Sarah Lorance, reporting

13. ROUTINE4Ecovyst Inc.ECVTMay 27

    Patti A. Humble, insider filing for ECVT

    Patti A. Humble, reporting

14. ROUTINE3Ecovyst Inc.ECVTMay 26

    Patti A. Humble, new insider at ECVT

    Patti A. Humble, reporting

15. ROUTINE8-KEcovyst Inc.ECVTMay 21

    Current report

16. ROUTINESCHEDULE 13G/AEcovyst Inc.ECVTMay 8

    Ownership stake disclosure by HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC (amended)

    HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC, filed by

17. NOTABLE10-QEcovyst Inc.ECVTMay 5

    Quarterly report

18. ROUTINE8-KEcovyst Inc.ECVTMay 5

    Current report

19. ROUTINE8-KEcovyst Inc.ECVTMay 4

    Current report

20. ROUTINESCHEDULE 13GEcovyst Inc.ECVTApr 29

    Ownership stake disclosure by VANGUARD CAPITAL MANAGEMENT LLC

    VANGUARD CAPITAL MANAGEMENT LLC, filed by

21. ROUTINESCHEDULE 13G/AEcovyst Inc.ECVTApr 24

    Ownership stake disclosure by BlackRock, Inc. (amended)

    BlackRock, Inc., filed by

22. ROUTINEARSEcovyst Inc.ECVTApr 15

    Annual report to shareholders

23. ROUTINEDEF 14AEcovyst Inc.ECVTApr 15

    Proxy statement

24. ROUTINESCHEDULE 13G/AEcovyst Inc.ECVTMar 26

    Ownership stake disclosure by VANGUARD GROUP INC (amended)

    VANGUARD GROUP INC, filed by

25. ROUTINE4Ecovyst Inc.ECVTMar 16

    Kurt Bitting, insider filing for ECVT

    Kurt Bitting, reporting

26. ROUTINE4Ecovyst Inc.ECVTMar 6

    2 insider filings

    Michael Feehan, insider filing for ECVT

    Show all 2

    • 4Insider filing for ECVTMar 6
    • 4Insider filing for ECVTMar 6

    Michael Feehan, reporting

27. NOTABLE10-KEcovyst Inc.ECVTFeb 27

    Annual report

28. ROUTINE8-KEcovyst Inc.ECVTFeb 26

    Current report

29. ROUTINE4Ecovyst Inc.ECVTFeb 5

    10 insider filings

    Sarah Lorance, insider filing for ECVT

    Show all 10

    • 4Insider filing for ECVTFeb 5
    • 4Insider filing for ECVTFeb 5
    • 4Insider filing for ECVTFeb 5
    • 4Insider filing for ECVTFeb 5
    • 4Insider filing for ECVTFeb 5
    • 4Insider filing for ECVTFeb 5
    • 4Insider filing for ECVTFeb 5
    • 4Insider filing for ECVTFeb 5
    • 4Insider filing for ECVTFeb 5
    • 4Insider filing for ECVTFeb 5

    Sarah Lorance, reporting

30. ROUTINE4Ecovyst Inc.ECVTJan 26

    2 insider filings

    Michael Feehan, insider filing for ECVT

    Show all 2

    • 4Insider filing for ECVTJan 26
    • 4Insider filing for ECVTJan 26

    Michael Feehan, reporting

31. ROUTINE4Ecovyst Inc.ECVTJan 7

    2 insider filings

    Kurt Bitting, insider filing for ECVT

    Show all 2

    • 4Insider filing for ECVTJan 7
    • 4Insider filing for ECVTJan 7

    Kurt Bitting, reporting

32. ROUTINE8-KEcovyst Inc.ECVTJan 7

    Current report

33. ROUTINE8-KEcovyst Inc.ECVTDec 12, 2025

    Current report

34. ROUTINESCHEDULE 13GEcovyst Inc.ECVTNov 14, 2025

    Ownership stake disclosure by Rubric Capital Management LP

    Rubric Capital Management LP, filed by

35. ROUTINESCHEDULE 13G/AEcovyst Inc.ECVTNov 14, 2025

    Ownership stake disclosure by HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC (amended)

    HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC, filed by

36. ROUTINE4Ecovyst Inc.ECVTNov 10, 2025

    Susan F Ward, insider filing for ECVT

    Susan F Ward, reporting

37. ROUTINE144Ecovyst Inc.ECVTNov 7, 2025

    Susan F Ward, planned sale of ECVT shares

    Susan F Ward, reporting

Older filings on EDGAR