Simpson Thacher & Bartlett antitrust partner Kevin Arquit will join Weil, Gotshal & Manges as of Jan. 1, 2017, the latter announced Tuesday.

Arquit, who served as head of Simpson Thacher’s antitrust group, will co-lead his new firm’s global antitrust practice alongside his former partner and Federal Trade Commission colleague Steven Newborn, Weil’s current antitrust head.