Althoff Donald L.
Reporting Owner SEC Filing List

CIK: 0002023079
Form Filer Subject Company Filing Agent Date Actions
4Statement of changes in beneficial owner...Ecovyst Inc. 02/05/2026
4Statement of changes in beneficial owner...Althoff Donald L. Ecovyst Inc. /fa 02/05/2026
4Statement of changes in beneficial owner...Ecovyst Inc. Ecovyst Inc. /fa 02/05/2025
4Statement of changes in beneficial owner...Ecovyst Inc. 05/22/2024
4Statement of changes in beneficial owner...Althoff Donald L. Ecovyst Inc. /fa 05/22/2024
3Initial statement of beneficial ownershi...Ecovyst Inc. 05/17/2024
3Initial statement of beneficial ownershi...Althoff Donald L. Ecovyst Inc. /fa 05/17/2024

Althoff Donald L. 's Ownership Transactions

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Shares Price Total Amt Shares Owned