144 0001299634 XXXXXXXX LIVE 0001713683 Zscaler, Inc. 001-38413 110 Rose Orchard Way SAN JOSE CA 95134 (408) 533-0288 Giancarlo Charles H Board Member Common Pershing Advisor Solutions

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8912 2584480.00 155695672 06/03/2025 NASDAQ Common 10/27/2017 Gift from Affiliate Charles H Giancarlo Y 10/27/2017 8912 06/03/2025 GIFT Y 06/03/2025 Charles H Giancarlo