X0306 4 2016-12-02 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 2016-12-02 4 S 0 26566 127.315 D 568760 D Represents the number of shares automatically sold upon vesting of restricted stock units to cover tax withholding obligations. This sale price represents the weighted average sale price of the shares sold ranging from $126.374 to $127.32 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4. /s/ Jeff True, Attorney-in-Fact for Mark D. McLaughlin 2016-12-06