Benzinga's Top #PreMarket Losers

shares declined 5.51 percent to $4.63 in pre-market trading following announcement of a $9 million registered direct offering.

shares dipped 4.50 percent to $2.12 in pre-market trading after falling 3.90 percent on Friday.

shares tumbled 4.41 percent to $33.60 in pre-market trading after falling 3.22 percent on Friday.

shares fell 3.41 percent to $14.15 in pre-market trading after declining 10.45 percent on Friday. Morgan Stanley downgraded Immunogen from Equal-weight to Underweight and lowered the price target from $10.00 to $9.00..

fell 2.32 percent to $69.80 in pre-market trading after dropping 3.01 percent on Friday.