Live feed19:00:13·1528dINSIDERFilingvia QuantisnowSEC Form 4: Johnson David Lee converted options into 4,375 shares and covered exercise/tax liability with 1,513 shares, increasing direct ownership by 6% to 48,424 units (withholding tax)ByQuantisnow·Wall Street's wire, on your screen.GBT· Global Blood Therapeutics Inc.Health CareOriginal source