X0306 4 2015-04-09 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 President & CEO Common Stock 2015-04-09 4 M 0 95600 10.77 A 773764 D Common Stock 2015-04-09 4 S 0 58183 144.874 D 715581 D Common Stock 2015-04-09 4 S 0 29517 145.772 D 686064 D Common Stock 2015-04-09 4 S 0 7900 146.813 D 678164 D Employee Stock Option (right to buy) 10.77 2015-04-09 4 M 0 95600 0.00 D 2021-09-29 Common Stock 95600 1384220 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person. This sale price represents the weighted average sale price of the shares sold ranging from $144.31 to $145.30 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. This sale price represents the weighted average sale price of the shares sold ranging from $145.31 to $146.26 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. This sale price represents the weighted average sale price of the shares sold ranging from $146.31 to $147.21 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. One forty-eighth (1/48) of the shares subject to the option vest monthly, provided that the Reporting Person continues to serve through each vesting date. /s/ Jeff True, Attorney in-Fact for Mark D. McLaughlin 2015-04-13