NEWMARKET CORP

NewMarket Corporation is a holding company that operates through its subsidiaries in the specialty chemicals sector. Its primary subsidiary, Afton Chemical Corporation (Afton), is a global developer and manufacturer of highly formulated lubricant and fuel additive packages, which are essential for the efficient and reliable operation of vehicles and machinery. Afton is one of the largest companies in the world in this field, serving customers across North America, Europe, Asia, Africa, and South America through its global manufacturing facilities. Another subsidiary, Ethyl Corporation (Ethyl), markets antiknock compounds in North America and provides contracted manufacturing and related services. American Pacific Corporation (AMPAC) manufactures specialty materials primarily for solid rocket motors used in the aerospace and defense industries. Calca Solutions, LLC (Calca), acquired on October 1, 2025, produces hydrazine products mainly for aerospace and defense applications. NewMarket Development Corporation manages the company's real property in Virginia, while NewMarket Services Corporation provides administrative services to all NewMarket subsidiaries.