UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM
CURRENT REPORT
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| Item 5.02 | Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. |
On December 8, 2025, the Compensation Committee (the “Committee”) of the Board of Directors of Ecovyst Inc. (the “Company”) approved a supplemental bonus grant to Paul Whittleston, the Company’s Vice President and President – Advanced Materials & Catalysts (“AM&C”), pursuant to the retention bonus program previously adopted by the Committee on December 9, 2024 and under which certain employees of the Company, including Mr. Whittleston, were granted retention bonuses tied to certain outcomes of the strategic review process relating to the AM&C business. Pursuant to this supplemental bonus award, Mr. Whittleston would be entitled to an amount equal to three months of his base salary, payable following a successful consummation of the Company’s previously announced agreement to sell the AM&C business to Technip Energies N.V., in addition to the amounts already granted to Mr. Whittleston pursuant to the retention bonus program approved by the Committee on December 9, 2024.
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
| Date: December 12, 2025 | Ecovyst Inc. | |||||
| By: | /s/ Joseph S. Koscinski | |||||
| Name: | Joseph S. Koscinski | |||||
| Title: | Vice President, Chief Administrative Officer, General Counsel and Secretary | |||||