144 0001590423 XXXXXXXX LIVE 0001327567 PALO ALTO NETWORKS INC 001-35594 3000 Tannery Way Santa Clara CA 95054 4087534000 WILLIAM D JENKINS JR. Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

6218 1164133.96 697000000 12/26/2025 NASDAQ Common 08/20/2022 Restricted Stock Units Issuer N 6218 08/20/2022 N/A Y Sales that were executed on December 26, 2025 are being reported on this Form 144 filed on December 29, 2025 given December 24, 2025 and December 26, 2025 were treated as federal holidays for EDGAR filing purposes. 12/26/2025 09/26/2025 /s/ William D Jenkins Jr.