X0306 4 2019-03-06 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 2019-03-06 4 M 0 40000 10.77 A 250205 D Common Stock 2019-03-06 4 S 0 6334 233.005 D 243871 D Common Stock 2019-03-06 4 S 0 16177 233.88 D 227694 D Common Stock 2019-03-06 4 S 0 4100 234.887 D 223594 D Common Stock 2019-03-06 4 S 0 7989 235.947 D 215605 D Common Stock 2019-03-06 4 S 0 5400 236.689 D 210205 D Common Stock 103849 I See footnote Common Stock 51911 I See footnote Employee Stock Option (right to buy) 10.77 2019-03-06 4 M 0 40000 0.00 D 2021-09-29 Common Stock 40000 278024 D These shares were sold 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 $232.44 to $233.42 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 $233.44 to $234.43 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 $234.44 to $235.32 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. This sale price represents the weighted average sale price of the shares sold ranging from $235.44 to $236.43 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 $236.45 to $237.10 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. Shares are held by The McLaughlin Revocable Living Trust, for which the Reporting Person serves as a trustee. Shares are held by The Mark D. McLaughlin 2017 Annuity Trust ("McLaughlin GRAT I"), for which the Reporting Person serves as a trustee. The shares subject to the option are fully vested and exercisable. /s/ Jeff True, Attorney-in-Fact for Mark D. McLaughlin 2019-03-07