Live feed18:49:17·449dINSIDERFilingvia QuantisnowSVP, Operations and Strat Deve Landes Gregg covered exercise/tax liability with 1,924 shares, decreasing direct ownership by 4% to 51,207 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.ASPN· Aspen Aerogels Inc.Consumer DiscretionaryOriginal source