Ecovyst grants new retention bonus tied to AM&C business sale

Ecovyst Inc. reported that its Compensation Committee approved a supplemental retention bonus for Paul Whittleston, Vice President and President – Advanced Materials & Catalysts (AM&C).

Rhea-AI Filing Summary

Ecovyst Inc. reported that its Compensation Committee approved a supplemental retention bonus for Paul Whittleston, Vice President and President – Advanced Materials & Catalysts (AM&C). Under this new award, he will receive an additional payment equal to three months of his base salary, on top of prior retention bonuses granted in December 2024. The payment is contingent on the successful consummation of Ecovyst’s previously announced agreement to sell its AM&C business to Technip Energies N.V. This structure is designed to keep a key business leader in place through completion of the AM&C transaction.

8-K Event Classification

Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers

1 item

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers Governance

Key personnel changes including departures, elections, or appointments of directors and executive officers.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What executive compensation change did Ecovyst (ECVT) announce?

Ecovyst’s Compensation Committee approved a supplemental retention bonus for Paul Whittleston, Vice President and President – Advanced Materials & Catalysts, equal to three months of his base salary.

What triggers the new retention bonus for Ecovyst’s AM&C president?

The supplemental bonus becomes payable to Paul Whittleston following a successful consummation of Ecovyst’s agreement to sell its Advanced Materials & Catalysts (AM&C) business to Technip Energies N.V.

How does this new Ecovyst (ECVT) bonus relate to prior retention awards?

The new award is in addition to the retention bonuses previously granted to Mr. Whittleston under a retention bonus program adopted on December 9, 2024.

Which Ecovyst business is tied to this retention bonus arrangement?

The bonus is tied to the strategic review and planned sale of Ecovyst’s Advanced Materials & Catalysts (AM&C) business.

Who is the buyer in Ecovyst’s planned sale of the AM&C business?

Ecovyst has a previously announced agreement to sell its AM&C business to Technip Energies N.V., and the bonus depends on that deal’s successful closing.

Does the Ecovyst (ECVT) filing mention changes to other executives’ pay?

The disclosure focuses on the supplemental retention bonus granted to Paul Whittleston; it does not describe changes for other executives.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 12/12/2025 - 04:30 PM EST Learn about SEC filing dates

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 8, 2025

Ecovyst Inc.

(Exact Name of Registrant as Specified in its Charter)

Commission File Number: 001-38221

Delaware		81-3406833
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)
600 Lee Road, Suite 200
Wayne, Pennsylvania		19087
(Address of principal executive offices)		(Zip Code)

(484) 617-1200

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading symbol		Name of each exchange on which registered
Common stock, par value $0.01 per share		ECVT		New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐   

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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