Check out the companies making headlines after the bell on Thursday:
Shares of FireEye plunged as much as 14 percent in extended trading after the network security company missed quarterly revenue estimates and provided weak third-quarter and full-year guidance.
FireEye reported a loss of 33 cents a share ex-items on revenue of $175 million, compared to analysts' expectations of a loss of 39 cents per share on revenue of $182 million, according to a Thomson Reuters.
The company said it expects revenue between $180 million and $186 million for the third quarter, and $716 million to $728 million for 2016. Both ranges fall well below analysts' projections of $208.2 million for the third quarter and $793.4 million for fiscal year 2016, according to a Thomson Reuters consensus.
Shares of LinkedIn edged higher after-hours following the company's earnings and revenue beat.
The online professional network reported adjusted earnings of $1.13 per share on revenue of $933 million. That compared to analysts' expectations of 78 cents per share on revenue of $898 million, according to a Thomson Reuters.
Shares of Priceline popped 5 percent in extended trading following the company's earnings beat and revenue miss.
The online travel company reported second-quarter adjusted earnings of $13.93 per share on revenue of $2.56 billion. That was mixed compared to analysts' estimates of $12.69 per share and revenue of $2.58 billion, according to a Thomson Reuters.
Activision Blizzard shares rose more than 1 percent after the gaming developer beat second-quarter earnings and revenue expectations.
Activision reported adjusted earnings of 54 cents per share ex-items on revenue of $1.61 billion. Both beat analysts' expectations of 42 cents per share on revenue of $1.46 billion, according to Thomson Reuters.
Shares of Rackspace Hosting surged nearly 19 percent in extended trading. The spike follows a Wall Street Journal report that the company is in advanced talks to be sold to a private-equity firm.
The deal could be announced as soon as this week, according to the report. Rackspace provides managed services for enterprises using cloud platforms.
Kraft Heinz popped more than 4 percent after hours after the company reported a strong boost in quarterly revenue and EPS, year over year.
The food and beverage company reported second-quarter earnings of 63 cents per share on revenue of 6.79 billion, compared to its loss of 91 cents per share on revenue of $2.62 billion in the prior-year period . The company said that "results … reflected significant gains from the ongoing integration of Kraft and Heinz, partially offset by currency translation and a higher tax rate versus the prior year period."