Benzinga's Top #PreMarket Gainers

ImmunoGen, Inc. IMGN shares gained 18.28% to $8.80 in the pre-market trading session following the announcement of Takeda TKPYY deal. Kamada Ltd. KMDA shares surged 7.76% to $4.58 in pre-market trading after the company reported that the European Commission has designated its Alpha-1 Antitrypsin as an orphan medicinal product to treat Graft-versus-host disease. Tenet Healthcare Corp. THC shares rose 4.80% to $52.00 in pre-market trading after the company announced its plans to form a joint venture with United Surgical Partners International Inc. Seacoast Banking Corp. of Florida SBCF gained 3.25% to $13.99 in pre-market trading after rising 1.80 on Friday. Cliffs Natural Resources Inc. CLF shares climbed 2.33% to $4.40 in pre-market trading after the company agreed to sell Chromite assets in Canada for $20 million.