The Potbelly Corp. signage is displayed in the window of a sandwich shop location in Washington, D.C., U.S., on Friday, Oct. 4, 2013.
The Potbelly Corp. signage is displayed in the window of a sandwich shop location in Washington, D.C., U.S., on Friday, Oct. 4, 2013. Andrew Harrer Bloomberg
The Potbelly Corp. signage is displayed in the window of a sandwich shop location in Washington, D.C., U.S., on Friday, Oct. 4, 2013. Andrew Harrer Bloomberg