Check out which companies are making headlines after the bell Thursday:
Weight Watchers - The company's shares declined some 15 percent after it reported weak guidance.
Crocs - Shares of the shoe maker fell more than 6 percent after it forecasts wider-than-expected decline in first-quarter sales.
Gap - The retailer rose about 2 percent in after-hours trading after it beat earnings estimates by a penny, while revenue was in line. Gap also warned that the West Coast port slowdown and currency issues would negatively impact future earnings.
Herbalife - The stock rallied before turning lower after it easily beat earnings forecasts, but revenue trailed estimates.
J.C. Penney - The retailer reported break-even results, missing estimates for a profit of 11 cents a share, while revenue came in better than expected.