X0306 4 2020-10-01 0 0001327567 Palo Alto Networks Inc PANW 0001250333 ZUK NIR C/O PALO ALTO NETWORKS INC. 3000 TANNERY WAY SANTA CLARA CA 95054 1 1 0 0 EVP, Chief Technology Officer Common Stock 2020-10-01 4 S 0 600 248.685 D 923934 D Common Stock 2020-10-01 4 S 0 4300 249.962 D 919634 D Common Stock 2020-10-01 4 S 0 5000 250.865 D 914634 D Common Stock 2020-10-01 4 S 0 2100 251.719 D 912534 D Common Stock 91638 I See footnote This sale price represents the weighted average sale price of the shares sold ranging from $248.23 to $249.15 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 $249.385 to $250.355 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 $250.40 to $251.385 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 $251.41 to $252.36 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 Cliff Family Trusts for the benefit of the Reporting Person's children. /s/ Sonia Guillory, Attorney-in-Fact for Nir Zuk 2020-10-02