Mark Rosen, chairman of Mark Bruce International, has been handling elite law firm partner moves for decades. He facilitated Scott Barshay’s defection from Cravath Swaine & Moore to Paul, Weiss, Rifkind, Wharton & Garrison; as well as moves by other Cravath M&A partners, including Eric Schiele and James Woolery.

Most recently, his work made news again when he placed a group of four partners from Cleary Gottlieb Steen & Hamilton at Freshfields Bruckhaus Deringer. The move stood out not only because it took a substantial M&A practice from a pure lockstep firm, but also because Cleary terminated the group on its way out.