X0609 4 2026-10-19 0 0001713683 Zscaler, Inc. ZS 0002040014 Geller Adam false 4401 GREAT AMERICA PARKWAY SANTA CLARA CA 95054 0 1 0 0 Chief Product Officer 0 Common Stock 2026-10-19 4 A 0 19859 0 A 58167 D The reported shares are represented by restricted stock units, which vest in 12 equal quarterly installments beginning on December 15, 2026. /s/ Torrie Nute, by power of attorney 2026-10-20