X0306 4 2016-01-08 0 0001327567 Palo Alto Networks Inc PANW 0001250333 ZUK NIR C/O PALO ALTO NETWORKS INC. 4401 GREAT AMERICA PKWY SANTA CLARA CA 95054 1 1 0 0 CTO Common Stock 2016-01-08 4 S 0 2950 163.375 D 2187485 D Common Stock 2016-01-08 4 S 0 7450 164.297 D 2180035 D Common Stock 2016-01-08 4 S 0 11500 165.24 D 2168535 D Common Stock 2016-01-08 4 S 0 7900 166.225 D 2160635 D Common Stock 2016-01-08 4 S 0 200 166.75 D 2160435 D Common Stock 2016-01-11 4 S 0 1810 163.02 D 2158625 D Common Stock 250000 I See footnote 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 $162.69 to $163.67 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 $163.70 to $164.69 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 $164.715 to $165.71 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 $165.75 to $166.74 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. Represents the number of shares sold upon vesting of restricted stock to cover tax withholding obligations. Shares are held by the Zuk 2015 GRAT dated June 17, 2015, for which the Reporting Person serves as a trustee. /s/ Jeff True, Attorney-in-Fact for Nir Zuk 2016-01-12