Wachtell, Lipton, Rosen & Katz and Stikeman Elliott are advising CST Brands, a San Antonio-based retailer of motor fuels and convenience merchandise, in its pending acquisition by Canadian company Alimentation Couche-Tard for about $4.4 billion. Couche-Tard turned to Davies Ward Phillips & Vineberg and Faegre Baker Daniels.

CST announced on Aug. 22 that its board had unanimously approved a definitive merger agreement with Couche-Tard, of Laval, Quebec. The deal calls for Couche-Tard to acquire all CST shares for $48.53 per share in cash, totaling about $4.4 billion including assumed debt.