Cinven, Saint-Gobain, RPM International, Sika AG and other defendants were hit with an antitrust class action on Dec. 7 in Pennsylvania Eastern District Court alleging price-fixing in the markets for cement additives and admixtures for concrete and mortar. The filing is part of a flurry of similar suits filed in the last week. The suit was brought by Berger Montague; the Grabar Law Office; Caputo & Mariotti; Lite DePalma Greenberg & Afanador; and Edelson Lechtzin LLP. Counsel have not yet appeared for the defendants. The case is 2:23-cv-04845, 570 Concrete, LLC v. Sika AG.