Global Headquarters

300 Lindenwood Drive
Malvern, PA 19355-1740
(484) 617-1200

Website
investor.ecovyst.com

Investor Relations

Nahla A. Azmy
Vice President
Investor Relations and Financial Communications
(610) 651-4561

Transfer Agent

American Stock Transfer and Trust Company, LLC (AST)
Toll-Free (800) 937-5449
www.astfinancial.com

Stock Listing

Listed on the New York Stock Exchange on August 3, 2021
Ticker: ECVT

SEC Filings

All ECVT filings are on www.sec.gov

Independent Auditors

PricewaterhouseCoopers LLP
Two Commerce Square
Suite 1800
2001 Market Street
Philadelphia, PA 19103-7042
(267) 330-3000