Enanta Pharmaceuticals Enanta Pharmaceuticals (NASDAQ:ENTA) is 3.6% lower after hours on a reported 1.6M-share secondary offering. Those shares are said to be offered at $97 each, Bloomberg reports. The stock closed today at $103.77, implying a 6.5% discount. The seller is unknown although one holder has at least 1.6M shares: BlackRock, with 2.57M.