X0306 4 2019-01-20 0 0001327567 Palo Alto Networks Inc PANW 0001309507 MCLAUGHLIN MARK D C/O PALO ALTO NETWORKS INC. 3000 TANNERY WAY SANTA CLARA CA 95054 1 0 0 0 Common Stock 2019-01-20 4 F 0 4985 203.30 D 210205 D Common Stock 103849 I See footnote Common Stock 51911 I See footnote This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported performance-based restricted stock units, performance-based restricted stock awards, restricted stock units, and restricted stock awards. Shares are held by The McLaughlin Revocable Living Trust, for which the Reporting Person serves as a trustee. Shares are held by the McLaughlin GRAT I, for which the Reporting Person serves as a trustee. /s/ Jeff True, Attorney-in-Fact for Mark D. McLaughlin 2019-01-23