Martin Shkreli, Fmr Officer Dir 10% Sharehldr at Travere Therapeutics, holds 2.08M shares in Humanigen (Ticker: HGENQ), holds 1.77M shares in Travere Therapeutics (Ticker: TVTX). Most recently, Martin Shkreli Sold ― shares of Humanigen on Aug 29, 2016 for an estimated value of 6.89M.