Washington Prime Group Inc. announced senior management changes including the promotion of several key positions, as well as the resignation of Butch Knerr as Executive Vice President and Chief Operating Officer. The company promoted Paul Ajdaharian to Executive Vice President, Head of Open Air Leasing; Greg Zimmerman, Executive Vice President, Development, will continue to lead Development, with the addition of Construction and Restaurant Leasing; Armand Mastropietro to Executive Vice President, Property Management; and Josh Lindimore to Senior Vice President, Head of Leasing. Lauren Kelly and Amy Jonas have been promoted to Senior Vice Presidents within the leasing team, as has Kurt Palmer who leads sponsorship and specialty leasing efforts.