Early Movers Before The Bell

The online game developer had fallen out of compliance when two of its independent directors resigned from the board. Potbelly The company said it would report weaker than expected sales for its second quarter. The sandwich chain's chief executive Aylwin Lewis said the quarter's performance is "disappointing" and that the company plans to test new marketing strategies and some menu changes. Zumiez The sports apparel retailer raised its second quarter earnings guidance, after reporting a better-than-expected 3.1 percent jump in June same-store sales. United Continental The airline reported a 3.5 percent increase in passenger revenue per available seat mile during the second quarter, more than it had previously forecast. Early movers before the bell