Benzinga's Top #PreMarket Gainers

OraSure Technologies, Inc. OSUR shares rose 8.91 percent to $6.32 in pre-market trading after the company reported winning of a $10.4 million HHS contract for rapid advancement of Ebola test clinical development. Tonix Pharmaceuticals Holding Corp. TNXP shares climbed 3.07 percent to $8.40 in pre-market trading after falling 3.44 percent on Thursday. Calithera Biosciences Inc CALA shares climbed 2.27 percent to $8.10 in pre-market trading after the company reported additional data from a study of its glutaminase inhibitor CB-839. Agios Pharmaceuticals Inc AGIO gained 1.31 percent to $124.20 in pre-market trading after the company reported new, final data from its Phase 1 multiple ascending dose study for AG-348, an investigational medicine for pyruvate kinase deficiency. Restoration Hardware Holdings Inc RH shares surged 1.16 percent to $95.93 in pre-market trading. Restoration Hardware reported better-than-expected results for the first quarter and raised its forecast for the year. However, the company issued a weak forecast for the current quarter.