Ecovyst Inc. — Director's Dealing 2025

Nov 10, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Ecovyst Inc. (ECVT)
CIK: 0001708035
Period of Report: 2025-11-07

Reporting Person: Ward Susan F (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-11-07	Common Stock	S	15000	$8.4012	Disposed	78261	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.400 to $8.415, inclusive. The reporting person undertakes to provide to Ecovyst Inc., any security holder of Ecovyst Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.