Shares of FireEye Inc. tumbled sharply in afterhours trade Tuesday after the cyber-security company missed revenue expectations for the third quarter. The company's sales grew 168% year-over-year to $114.2 million as it doubled its customer base. However, that fell short of the $116.2 million that was forecast by analysts in a FactSet poll, and marks the fourth straight quarter-over-quarter decline. Its adjusted loss of $73.9 million, or 51 cents a share, beat the 55-cent loss per share projected by analysts. However, shares of FireEye fell 20% to $27.27 after the bell.
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