Zscaler officer plans $880K Rule 144 stock sale

Zscaler, Inc. (ZS) is the issuer for which officer Adam Geller has filed a notice under Rule 144 to sell common stock.

Rhea-AI Filing Summary

Zscaler, Inc. (ZS) is the issuer for which officer Adam Geller has filed a notice under Rule 144 to sell common stock. The planned sale covers 4,584 shares of common stock, with an aggregate market value of $880,173.84, when Zscaler had 163,054,698 shares outstanding and the shares are listed on NASDAQ.

The shares to be sold were acquired from the issuer on September 15, 2026 as 2,643 performance shares and 1,941 restricted stock. In the prior three months, Adam Geller reported sales of 5,578 shares for $1,075,230.90 on June 22, 2026 and 2,817 shares for $345,364.20 on September 16, 2026.

Key Figures

Shares to be sold under Rule 144: 4,584 shares Aggregate market value of shares to be sold: $880,173.84 Shares outstanding: 163,054,698 shares +4 more

7 metrics

Shares to be sold under Rule 144 4,584 shares Number of Zscaler common shares covered by the Rule 144 notice

Aggregate market value of shares to be sold $880,173.84 Market value of the 4,584 Zscaler shares to be sold

Shares outstanding 163,054,698 shares Zscaler common shares outstanding when the Rule 144 notice was prepared

Performance shares acquired 2,643 shares Performance shares acquired from issuer on September 15, 2026 to be sold

Restricted stock acquired 1,941 shares Restricted stock acquired from issuer on September 15, 2026 to be sold

Recent sale June 22, 2026 5,578 shares for $1,075,230.90 Common shares sold by Adam Geller during the past 3 months

Recent sale September 16, 2026 2,817 shares for $345,364.20 Common shares sold by Adam Geller during the past 3 months

Key Terms

Rule 144, Performance Shares, Restricted Stock, aggregate market value

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.

Performance Shares financial

"Common | 09/15/2026 | Performance Shares | ISSUER"

Performance shares are a type of company stock given to executives or employees that only become theirs if the company meets specific goals, like hitting certain profits or growth targets. They motivate leaders to work toward the company’s success, because their additional shares depend on achieving these results.

Restricted Stock financial

"Common | 09/15/2026 | Restricted Stock | ISSUER"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

aggregate market value financial

"4584 | 880173.84 | 163054698 | 09/17/2026"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

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 states that officer Adam Geller intends to sell 4,584 shares of Zscaler common stock under Rule 144, with an aggregate market value of $880,173.84, when 163,054,698 shares of common stock were outstanding and listed on NASDAQ.

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

The notice covers a proposed sale of 4,584 shares of Zscaler common stock. These shares have an aggregate market value of $880,173.84 based on the information provided in the filing.

What types of ZS equity awards are being sold in this Form 144?

The shares to be sold were acquired on September 15, 2026 as 2,643 performance shares and 1,941 restricted stock, both from the issuer, Zscaler, Inc.

What recent ZS stock sales by Adam Geller are disclosed in the past 3 months?

The filing lists sales by Adam Geller of 5,578 shares of Zscaler common stock for $1,075,230.90 on June 22, 2026 and 2,817 shares for $345,364.20 on September 16, 2026.

How many ZS shares were outstanding when this Form 144 was prepared?

The document reports that 163,054,698 shares of Zscaler common stock were outstanding when the notice to sell 4,584 shares under Rule 144 was prepared.

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

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Available on EDGAR 09/17/2026 - 04:28 PM Accepted by SEC EDGAR 09/17/2026 - 04:27 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	0002040014
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	ADAM GELLER
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	4584	880173.84	163054698	09/17/2026	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	Performance Shares	ISSUER			2643	09/15/2026	Not Applicable
Common	09/15/2026	Restricted Stock	ISSUER			1941	09/15/2026	Not Applicable

* 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
ADAM GELLER 120 Holger Way San Jose CA 95134	Common	09/16/2026	5578	1075230.90
ADAM GELLER 120 Holger Way San Jose CA 95134	Common	06/22/2026	2817	345364.20

144: Remarks and Signature

Remarks
Date of Notice	09/17/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/20/2026
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/ Adam Geller
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)