Zscaler officer plans 4,108-share tax-cover sale

Officer Mike Rich files a Rule 144 notice to sell 4,108 Zscaler shares tied to RSU vesting and reports a prior June 2026 sale.

Rhea-AI Filing Summary

Zscaler, Inc. (ZS) is the issuer of common stock covered by a notice of proposed sale under Rule 144 filed for the account of officer Mike Rich. The notice indicates an intention to sell 4,108 shares of common stock through Morgan Stanley Smith Barney LLC following the September 15, 2026 vesting of Restricted Stock Units, with the transaction described as compensation-related. The filing also reports a prior sale of 4,184 shares of common stock on June 16, 2026, and notes that shares were sold to cover a tax withholding obligation mandated by Zscaler’s equity incentive plans.

Key Figures

Proposed shares to be sold: 4,108 shares Prior shares sold: 4,184 shares Value of prior sale: $528,981.03 +2 more

5 metrics

Proposed shares to be sold 4,108 shares Common stock tied to RSU vesting on September 15, 2026 under Rule 144 notice

Prior shares sold 4,184 shares Common stock sale reported for June 16, 2026

Value of prior sale $528,981.03 Total value associated with 4,184 shares sold on June 16, 2026

Rule 144 notice date September 16, 2026 Date of notice for proposed sale of 4,108 shares

Issuer phone number 408-533-0288 Contact phone for Zscaler, Inc.

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 | | | 4108"

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

"mandated by 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 (Zscaler, Inc.)?

It discloses that officer Mike Rich filed a Rule 144 notice for the proposed sale of 4,108 shares of Zscaler common stock related to September 15, 2026 RSU vesting, and reports a prior sale of 4,184 shares on June 16, 2026.

How many ZS shares are proposed to be sold under this Form 144?

The notice covers a proposed sale of 4,108 shares of Zscaler common stock. These shares are tied to the September 15, 2026 vesting of Restricted Stock Units and are to be sold through Morgan Stanley Smith Barney LLC.

What prior ZS stock sales by Mike Rich are reported in this Form 144?

The filing reports that 4,184 shares of Zscaler common stock were sold on June 16, 2026. The total value associated with that sale is listed as $528,981.03.

Why were ZS shares sold according to the Form 144 remarks?

The remarks state that shares were sold to cover a tax withholding obligation mandated by Zscaler’s election under its equity incentive plans. This indicates the sales were connected to equity compensation and related tax requirements.

Who is the broker involved in the proposed ZS share sale under Form 144?

The proposed sale of 4,108 shares of Zscaler common stock is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, NY.

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

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Available on EDGAR 09/16/2026 - 07:56 PM Accepted by SEC EDGAR 09/16/2026 - 07:56 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	0002009289
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	Mike Rich
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	4108	791869.7	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			4108	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
Michael Rich 120 Holger Way San Jose CA 95134	Common Stock	06/16/2026	4184	528981.03

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/ Mike Rich
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)