Harris Williams & Co., a preeminent middle market investment bank focused on the advisory needs of clients worldwide, announces that it has promoted 12 senior professionals from the firm’s Boston, Frankfurt, Minneapolis and Richmond offices. Sam Hendler and Geoff Smith have been promoted to managing director. Jeff Burkett, Brant Cash, Lars Friemann, Paul Hepper, Jershon Jones and John Klim have been promoted to director. Jacques Fu, John Lautemann, Andy Warczak and Mike Williams have been promoted to vice president. The promotions expand the senior capabilities across several of the firm’s Industry Groups.