X0306 4 2019-02-01 0 0001713683 Zscaler, Inc. ZS 0001733848 Apte Manoj C/O ZSCALER, INC. 110 ROSE ORCHARD WAY SAN JOSE CA 95134 0 1 0 0 Chief Strategy Officer Common Stock 2019-02-01 4 S 0 45438 47.7676 D 183547 I See footnote Common Stock 2019-02-01 4 S 0 35106 48.1743 D 148441 I See footnote Common Stock 2019-02-04 4 S 0 15000 49.1807 D 133441 I See footnote Common Stock 114062 D Common Stock 13132 I See footnote Common Stock 132 I See footnote Common Stock 138594 I See footnote Common Stock 141784 I See footnote The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on September 28, 2018. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.05 to $48.04, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2), (4) and (5) to this Form 4. The shares are held directly by the Akshay Kosh Family Trust dated December 18, 2006 for which the reporting person and his spouse serve as trustees. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.05 to $48.37, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.02 to $49.31, inclusive. The shares are held directly by the reporting person's mother-in-law. The shares are held directly by the reporting person's father-in-law. The shares are held directly by the Manoj Apte 2017 GRAT for which the reporting person serves as trustee. The shares are held directly by the Lalite Godbole 2017 GRAT for which the reporting person's spouse serves as trustee. /s/ Torrie Nute, by power of attorney 2019-02-05