X0206 3 2013-05-21 0 0001269021 PORTOLA PHARMACEUTICALS INC PTLA 0001574557 Califf Robert C/O PORTOLA PHARMACEUTICALS, INC. 270 EAST GRAND AVENUE, SUITE 22 SOUTH SAN FRANCISCO CA 94080 1 0 0 0 Stock Option (Right to Buy) 7.00 2022-07-17 Common Stock 12000 D The Option shares shall vest as follows: one-fourth (1/4th) of the shares vest one year after July 18, 2012; the balance of the shares vest in a series of thirty-six (36) successive equal monthly installments measured from the first anniversary of July 18, 2012, subject to Reporting Person's Continuous Service (as defined in the Issuer's 2003 Equity Incentive Plan) as of each such date. /s/ Sally A. Kay, as attorney-in-fact 2013-05-21