An employee delivers food at a Sonic drive-in restaurant in Normal, Illinois.

Check out the companies making headlines after the bell:

Shares of Sonic plummeted more than 8 percent in extended-hours trading. The popular drive-in restaurant chain, earned 52 cents per share in its third quarter, beating analyst estimates of 49 cents, but missed on estimated revenue. Sonic only earned $118.3 million compared to the $118.7 million estimated by analysts.