From Billboard:
Troy Carter’s Atom Factory has signed John Mayer and Miguel as management clients, Billboard has learned, finalizing deals that began in late 2013 with each artist. Miguel has been part of the roster since mid-November, having split with previous firm Red Light, while talks with Mayer began shortly after the singer parted ways with longtime manager Michael McDonald in early December.
Both follow the news from early November that Carter and top client Lady Gaga split after more than five years together.
Carter, reached by Billboard, confirmed the news but declined to comment on the signings, as did reps for Miguel and Mayer.