The law firm Debevoise & Plimpton has appointed Michael Diz, Andrew Levine and Dietmar Prager as partners of the firm, effective July 1. Diz is a member of the corporate department. Levine and Prager are both members of the litigation department. Both are based in the firm’s New York office.

Morgan Joseph TriArtisan announced that Stephen Clarke was named a managing director in the firm’s industrial investment banking group. Also, Michael Manocchio, of the health care investment banking group, and Matthew McLeod, of technology investment banking, were each promoted to vice president. Jo-Ku Tang, who joined Morgan Joseph as a controller in 2001, was named a managing director and CFO.