Zscaler officer plans $448K tax-cover stock sale

Zscaler, Inc. (ZS) received a notice that officer Robert Schlossman intends to sell 2,325 shares of common stock under Rule 144 through Morgan Stanley Smith Barney, following the vesting of restricted stock units on September 15, 2026.

Rhea-AI Filing Summary

Zscaler, Inc. (ZS) received a notice that officer Robert Schlossman intends to sell 2,325 shares of common stock under Rule 144 through Morgan Stanley Smith Barney, following the vesting of restricted stock units on September 15, 2026. Prior three-month sales totaled 3,268 shares of common stock. The filing states the shares are being sold to cover a tax withholding obligation under the company’s equity incentive plans.

Key Figures

Shares to be sold: 2,325 shares Estimated aggregate market value: $448,173.58 Shares outstanding: 163,054,698 shares +4 more

7 metrics

Shares to be sold 2,325 shares Proposed Rule 144 sale by officer Robert Schlossman

Estimated aggregate market value $448,173.58 Value for the 2,325 Zscaler common shares covered by the notice

Shares outstanding 163,054,698 shares Zscaler common stock outstanding as referenced in the Form 144

Prior sale June 16, 2026 3,146 shares; $397,747.52 Common stock sold by Robert Schlossman in the preceding three months

Prior sale July 6, 2026 122 shares; $18,300 Additional common stock sale by Robert Schlossman in the preceding three months

RSU vesting date September 15, 2026 Date of Restricted Stock Unit vesting that produced the shares to be sold

Date of notice September 16, 2026 Date the Form 144 notice was signed and filed

Key Terms

Rule 144, Restricted Stock Units, equity incentive plans, tax withholding obligation

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Units financial

"Vesting of Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

equity incentive plans financial

"Issuer's election under its equity incentive plans."

Equity incentive plans are company programs that pay employees, executives, or directors with company stock, stock options, or share units instead of or in addition to cash, aiming to align their interests with shareholders—like giving team members a stake in the house they help build. For investors this matters because such plans can motivate better company performance but also dilute existing ownership and increase reported compensation costs, so they affect future earnings, voting power, and share value.

tax withholding obligation financial

"Shares sold to cover tax withholding obligation mandated by Issuer's election"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing disclose for ZS?

It discloses that officer Robert Schlossman intends to sell 2,325 shares of Zscaler common stock under Rule 144, with the shares originating from RSU vesting on September 15, 2026 and the sale described as covering a tax withholding obligation.

How many Zscaler (ZS) shares is Robert Schlossman planning to sell?

The notice reports a proposed sale of 2,325 shares of Zscaler common stock. These shares are tied to a vesting of Restricted Stock Units on September 15, 2026 and are to be sold through Morgan Stanley Smith Barney LLC under Rule 144.

What is the estimated value of the ZS shares in the new Rule 144 notice?

The Form 144 lists an estimated aggregate market value of $448,173.58 for the 2,325 shares of Zscaler common stock covered by the notice, based on the information provided in the securities information section.

What prior sales of Zscaler (ZS) stock by Robert Schlossman are disclosed?

The filing reports that in the past three months, 3,146 shares of common stock were sold on June 16, 2026 for $397,747.52, and 122 shares were sold on July 6, 2026 for $18,300.

Why are the ZS shares being sold according to the Form 144 remarks?

The remarks state that the shares are sold to cover tax withholding obligation mandated by the issuer’s election under its equity incentive plans, indicating the sales relate to tax obligations from equity compensation.

How many Zscaler (ZS) shares are outstanding in this Form 144?

The securities information section lists 163,054,698 shares of Zscaler common stock outstanding, providing context for the size of the 2,325-share proposed sale under Rule 144.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 09/16/2026 - 07:43 PM Accepted by SEC EDGAR 09/16/2026 - 07:43 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001435941
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Zscaler, Inc.
SEC File Number	001-38413
Address of Issuer	120 Holger Way San Jose CALIFORNIA 95134
Phone	408-533-0288
Name of Person for Whose Account the Securities are To Be Sold	Robert Schlossman
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	2325	448173.58	163054698	09/16/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/15/2026	Vesting of Restricted Stock Units	Issuer			2325	09/15/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Robert Schlossman 120 Holger Way San Jose CA 95134	Common Stock	06/16/2026	3146	397747.52
Robert Schlossman 120 Holger Way San Jose CA 95134	Common Stock	07/06/2026	122	18300

144: Remarks and Signature

Remarks	Shares sold to cover tax withholding obligation mandated by Issuer's election under its equity incentive plans.
Date of Notice	09/16/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Robert Schlossman
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)