144 0001733959 XXXXXXXX LIVE 0001713683 Zscaler, Inc. 001-38413 110 ROSE ORCHARD WAY SAN JOSE CA 95134 (408) 533-0288 Darling Scott C Director Common FIDELITY BROKERAGE SERVICES LLC

245 SUMMER STREET BOSTON MA 02110

24038 4961923.00 148333445 12/12/2023 NASAQ Common 03/16/2018 Private Placement Issuer N 24038 03/16/2018 cash/check Y 12/12/2023 /s/ Carmen Zamores as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Darling Scott C