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Industry:Specialty Chemicalsβ
2026-05-26ECVT3Power of Attorney for Ecovyst Inc. DirectorMEDIUM
This filing is an Exhibit 24.1, a Power of Attorney document, for Patti A. Humble, an officer and/or director of Ecovyst Inc. The document appoints Joseph S. Koscinski as attorney-in-fact to prepare and execute necessary SEC filings, including Forms 3, 4, and 5, related to Section 16 of the Securities Exchange Act of 1...
Small CapSpecialty Chemicals
2026-05-26Ecovyst Inc.3Power of Attorney for Ecovyst Inc. DirectorDuplicateMEDIUM
This filing is an Exhibit 24.1, a Power of Attorney document, for Patti A. Humble, an officer and/or director of Ecovyst Inc. The document appoints Joseph S. Koscinski as attorney-in-fact to prepare and execute necessary SEC filings, including Forms 3, 4, and 5, related to Section 16 of the Securities Exchange Act of 1...
Small CapSpecialty Chemicals