X0306 4 2014-06-27 0 0001269021 PORTOLA PHARMACEUTICALS INC PTLA 0001192591 HOMCY CHARLES J C/O PORTOLA PHARMACEUTICALS, INC. 270 EAST GRAND AVE. SOUTH SAN FRANCISCO CA 94080 1 0 0 0 Stock Option (Right to Buy) 29.19 2014-06-27 4 A 0 10000 0.00 A 2024-06-27 Common Stock 10000 10000 D The option shares shall vest as follows: 1/12th of the shares subject to such option shall vest each month after June 27, 2014, subject to Reporting Person's Continuous Service (as defined in the Issuer's Equity Incentive Plan) as of each such date. /s/ Nanci Salvucci, as attorney-in-fact 2014-06-30