X0306 4 2017-10-20 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 1 0 0 Chief Executive Officer Common Stock 2017-11-20 4 F 0 1476 142.53 D 349919 D Common Stock 125000 I See footnote Common Stock 65000 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 restricted stock awards. Shares are held by the Mark D. McLaughlin 2017 Annuity Trust, for which the Reporting Person serves as a trustee. Shares are held by the Mark D. McLaughlin 2017 Annuity Trust II, for which the Reporting Person serves as a trustee. /s/ Jeff True, Attorney-in-Fact for Mark D. McLaughlin 2017-11-22