X0306 4 2019-09-03 0001269021 PORTOLA PHARMACEUTICALS INC PTLA 0001250409 BIRD JEFFREY W 755 PAGE MILL ROAD, SUITE A-200 PALO ALTO CA 94304-1005 1 Common Stock 2019-09-03 4 J 0 10007.0000 0 A 10007.0000 I By Ltd Liability Company (SHM) Common Stock 2019-09-03 4 J 0 921610.0000 0 D 0.0000 I By Ltd Partnership (SHV) Common Stock 2019-09-03 4 J 0 9516.0000 0 A 458569.0000 I By Trust (Trustees) Common Stock 13194.0000 D Common Stock 45402.0000 I By Ltd Partnership (NEST) Represents the receipt of shares in the pro rata distribution described below, for no additional consideration, by Sutter Hill Management Company, L.L.C. ("SHM"), a limited partner of Sutter Hill Ventures, a California Limited Partnership ("SHV"). Shares held by SHM. SHV has voting and dispositive power over the shares held by SHM, and the reporting person is a trustee of a trust which is a member of SHM. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest therein. Effective September 3, 2019, SHV effected a pro rata distribution to its limited partners and its general partner for no additional consideration. Shares held by SHV. The reporting person is a managing director of the general partner of SHV. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest therein. Represents the receipt of shares in a pro rata distribution effective September 3, 2019, for no additional consideration, from SHV. Shares held by a trust of which the reporting person is a trustee. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest in the trust. The reporting person shares pecuniary interest in these shares with other individuals pursuant to a contractual relationship. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest in these shares. Shares held by a limited partnership of which the reporting person is a trustee of a trust which is the general partner. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest therein. /s/ Robert Yin, by power of attorney 2019-09-03