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.
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."