X0306 4 2021-08-03 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 2021-08-03 4 S 0 1436 400.528 D 6064 I See footnote Common Stock 2021-08-03 4 S 0 64 401.125 D 6000 I See footnote Common Stock 48380 I See footnote Common Stock 53883 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 $400.00 to $400.983 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 2020 Dynasty LLC for the benefit of the Reporting Person's children, for which the Reporting Person serves as a Manager. Shares are held by The McLaughlin Revocable Living Trust, for which the Reporting Person serves as a trustee. /s/ Sonia Guillory, Attorney-in-Fact for Mark D. McLaughlin 2021-08-03