Live feed18:01:04·1409dINSIDERFilingvia QuantisnowSEC Form 4: Johnson David Lee converted options into 6,770 shares and covered exercise/tax liability with 2,342 shares, increasing direct ownership by 9% to 53,151 units to satisfy tax liabilityByQuantisnow·Wall Street's wire, on your screen.GBT· Global Blood Therapeutics Inc.Health CareOriginal source