Zscaler

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-16 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Zscaler, Inc. (ZS) CIK: 0001713683 --- Reporting Owner --- Name: Rich Michael J. CIK: 0002009289 Role: Officer (CRO and President of WW Sales) --- Non-Derivative Transactions --- [Transaction #1] Security: Commom Stock Date: 2026-06-16 | Code: S (Open market sale) Shares: -4,184 | Price: $126.43 Total Value: $528,981.03 Shares Owned After: 100,301 | Ownership: D (Direct) Footnotes: [F1] Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units as mandated by the Issuer's election under its equity incentive plans and does not represent a discretionary trade by the Reporting Person. [F2] Includes 135 shares acquired under the Issuer's FY2018 Employee Stock Purchase Plan on June 15, 2026. --- Footnotes (Complete Index) --- F1: Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units as mandated by the Issuer's election under its equity incentive plans and does not represent a discretionary trade by the Reporting Person. F2: Includes 135 shares acquired under the Issuer's FY2018 Employee Stock Purchase Plan on June 15, 2026. --- Signature --- /s/ /s/ Torrie Nute, by power of attorney (2026-06-17)