Benzinga's Top #PreMarket Gainers

OncoMed Pharmaceuticals

surged 80.40% to $25.40 in the pre-market session on deal to sell 1.47 million shares to Celgene

at $15.13 per share. Conatus Pharmaceuticals

shares gained 25.57% to $7.71 in the pre-market as the company confirmed the FDA Orphan Drug Designation for emricasan for treatment of liver transplant recipients with reestablished fibrosis. Unilife

soared 20% to $4.98 in the pre-market trading after the company announced clinical supply agreement with Novartis

for delivery of a novel drug. Tesla Motors

shares jumped 5.92% to $131.52 in pre-market trading after the company announced that the German regulator has closed review of Model S incidents. Morgan Stanley named the stock a Top Pick in the auto sector.