A pair of beer industry deals are getting the fourth quarter started for a trio of Am Law 100 firms.

Gibson, Dunn & Crutcher and investment bank Moelis & Co.—the new home of attorney and former U.S. House Majority Leader Eric Cantor—are representing Dutch beer giant Heineken on the $1.23 billion sale this week of its Mexican packaging unit Empaque to Philadelphia-based Crown Holdings.