Benzinga's Top #PreMarket Losers

shares fell 64.48% to $0.65 in pre-market trading after the company reported top-line data from phase 2 study of KB001-A.

fell 2.65% to $32 in pre-market trading after the company reported downbeat quarterly revenue and issued a weak revenue forecast for the second quarter.

shares dropped 2.44% to $47.88 in pre-market trading after the company reported results for its fiscal 2015 second quarter and lowered its earnings forecast.

shares declined 2.29% to $68.12 in pre-market trading after the company issued a weak 2015 outlook.

shares dropped 1.13% to $22.68 in pre-market trading after the company priced 3.41 million share offering at $22.00 per share.