 Potbelly Corp. said late Monday it has named Robert D. Wright as its president and chief executive effective immediately. Wright succeeds Alan Johnson and most recently served as chief operations officer at Wendys Co. Wrights first order of business will be to accelerate the companys ongoing business turnaround, including reviewing the companys cost structure and asset base, Potbelly said. Shares of Potbelly rose nearly 3 in the extended session Monday after ending the regular trading day down 2.7. 