Benzinga's Top #PreMarket Gainers

gained 12.86 percent to $4.65 in pre-market trading after the company reported that the functional respiratory imaging data from its sponsored clinical trial of INOpulse(R) in COPD patients with pulmonary hypertension was presented today at the European Respiratory Society International Congress 2015.

shares rose 10.21 percent to $76.45 in pre-market trading. Unisplendour agreed to make a $3.775 billion equity investment in Western Digital.

shares rose 9.64 percent to $5.46 in pre-market trading after the company reported that it has entered into definitive merger agreement for a going private transaction.

shares climbed 6.71 percent to $6.84 in pre-market trading after reporting positive top line data from RSV F vaccine Phase 1.

shares rose 6.10 percent to $44.00 in pre-market trading after the company announced its plans to acquire

in an all-stock transaction.