Zscaler officer Schlossman plans sale of 5,394 shares

Zscaler officer Robert Schlossman has filed a Rule 144 notice to sell 5,394 shares of common stock, following prior sales reported over the past three months.

Rhea-AI Filing Summary

Zscaler, Inc. (ZS) received a Rule 144 notice that officer Robert Schlossman plans to sell 5,394 shares of common stock, acquired from vested restricted stock units between March 15, 2026 and June 15, 2026. The planned sale is listed through Morgan Stanley Smith Barney LLC with an estimated aggregate value of $1,064,290.14 as of September 21, 2026.

The notice also reports that during the prior three months, Schlossman sold 2,325 shares of Zscaler common stock on September 16, 2026 for $448,173.51 and 122 shares on July 6, 2026 for $18,300.00 under a 10b5-1 sales plan.

Key Figures

Planned shares to be sold: 5,394 shares Estimated aggregate value of planned sale: $1,064,290.14 Shares sold on September 16, 2026: 2,325 shares +4 more

7 metrics

Planned shares to be sold 5,394 shares Common stock reported in the Rule 144 notice for Zscaler, Inc.

Estimated aggregate value of planned sale $1,064,290.14 Value of 5,394 shares as of September 21, 2026

Shares sold on September 16, 2026 2,325 shares Common stock sale reported during past three months

Proceeds from September 16, 2026 sale $448,173.51 Aggregate value for 2,325 shares sold

Shares sold on July 6, 2026 122 shares Common stock sale under 10b5-1 sales plan

Proceeds from July 6, 2026 sale $18,300.00 Aggregate value for 122 shares sold

Date of notice September 21, 2026 Filing date of the Rule 144 notice

Key Terms

Rule 144, restricted stock units, 10b5-1 Sales Plan

3 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

"The securities to be sold were acquired upon the vesting of restricted stock units"

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.

10b5-1 Sales Plan regulatory

"10b5-1 Sales Plan for ROBERT SCHLOSSMAN 120 Holger Way San Jose CA 95134"

A 10b5-1 sales plan is a written, prearranged schedule that company insiders use to buy or sell their employer’s stock under a U.S. securities rule, so trades occur automatically at set times or prices regardless of later private information. It matters to investors because it reduces the risk of insider-trading accusations and signals that certain insider trades were planned ahead—like putting transactions on autopilot—while still affecting share supply and market confidence.

FAQ

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

What does the Form 144 filing disclose for ZS (Zscaler, Inc.)?

The filing discloses that officer Robert Schlossman has notified of an intended sale of 5,394 shares of Zscaler common stock under Rule 144, with the shares acquired via vested restricted stock units between March 15, 2026 and June 15, 2026.

How many ZS shares does Robert Schlossman plan to sell under this Form 144?

Robert Schlossman plans to sell 5,394 shares of Zscaler, Inc. common stock. The notice ties these shares to restricted stock units that vested during the period from March 15, 2026 through June 15, 2026.

What is the estimated value of the ZS shares to be sold in this Form 144?

The planned sale of 5,394 shares of Zscaler common stock has an estimated aggregate value of $1,064,290.14 as of September 21, 2026, based on the pricing information included in the notice.

Which broker is listed for the planned ZS share sale in the Form 144?

The planned sale for 5,394 Zscaler shares is listed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, in the Rule 144 notice.

What ZS stock sales by Robert Schlossman were reported for the past three months?

The notice reports Schlossman sold 2,325 shares of Zscaler common stock on September 16, 2026 for $448,173.51, and 122 shares on July 6, 2026 for $18,300.00 under a 10b5-1 sales plan.

When were the ZS restricted stock units underlying this Form 144 sale acquired?

The securities to be sold were acquired upon the vesting of restricted stock units during the period from March 15, 2026 through June 15, 2026, according to the remarks section of the notice.

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

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Available on EDGAR 09/21/2026 - 04:36 PM Accepted by SEC EDGAR 09/21/2026 - 04:34 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	4085330288
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	5394	1064290.14	163054698	09/21/2026	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	03/15/2026	Restricted Stock Units	Issuer			5394	03/15/2026	N/A

* 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	09/16/2026	2325	448173.51
10b5-1 Sales Plan for ROBERT SCHLOSSMAN 120 Holger Way San Jose CA 95134	Common	07/06/2026	122	18300.00

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 03/15/2026 through 06/15/2026.
Date of Notice	09/21/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	07/03/2025
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)