X0306 4/A 2015-08-17 2016-01-07 0 0001629137 Global Blood Therapeutics, Inc. GBT 0001053466 PATRICK DEVAL L C/O GLOBAL BLOOD THERAPEUTICS, INC. 400 EAST JAMIE COURT, SUITE 101 SOUTH SAN FRANCISCO CA 94080 1 0 0 0 Common Stock 0 D On January 7, 2016, the Reporting Person mistakenly filed a Form 4 reporting a purchase of 2,500 shares of common stock that did not in fact occur. As of August 17, 2015, the reporting person owned 0 shares of common stock. /s/ Matt Krause, as Attorney-in-Fact 2017-06-21