Ecovyst Announces Upsize and Pricing of Secondary Offering of 13,000,000 Shares of Common Stock by Selling Stockholders and Repurchase of Common Stock

Ecovyst Inc. (NYSE: ECVT) (the Company) today announced the upsize and pricing of the previously announced underwritten public offering (the Offering) by funds affiliated with CCMP Capital Advisors, LP (the Selling Stockholders).