ECOVYST INC.

ECVT · NEW YORK STOCK EXCHANGE INC.

All Other Miscellaneous Chemical Product and Preparation Manufacturing

Ecovyst Inc. and subsidiaries is a leading integrated and innovative global provider of specialty catalysts and services. We support customers globally through our strategically located network of manufacturing facilities. We believe that our products, which are predominantly inorganic, and services contribute to improving the sustainability of the environment.