X0306 4 2016-12-21 0 0001327567 Palo Alto Networks Inc PANW 0001309507 MCLAUGHLIN MARK D C/O PALO ALTO NETWORKS INC. 4401 GREAT AMERICA PKWY SANTA CLARA CA 95054 1 1 0 0 Chief Executive Officer Common Stock 2016-12-21 4 S 0 4405 126.133 D 564355 D Represents the number of shares automatically sold to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person. /s/ Jeff True, Attorney-in-Fact for Mark D. McLaughlin 2016-12-22