Zscaler officer Adam Geller proposes $132K share sale

The notice also lists gross proceeds from three earlier sales by Adam Geller: $880,173.84, $1,075,230.90 and $345,364.20.

Available on EDGAR 09/21/2026 - 04:04 PM EDT Accepted by SEC EDGAR 09/21/2026 - 04:03 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Adam Geller, an officer of Zscaler, Inc. (ZS), reported a proposed sale of 661 common shares, with an aggregate market value of $132,200.00 and an approximate sale date of September 21, 2026. Morgan Stanley Smith Barney LLC is listed as broker. The shares are identified as performance shares acquired from the issuer on September 15, 2026; the notice gives March 20, 2026 as the plan adoption or instruction date if relying on Rule 10b5-1.

Key Figures

Proposed sale: 661 shares Aggregate market value: $132,200.00 Shares outstanding: 163,054,698 shares +3 more

6 metrics

Proposed sale 661 shares Common shares; approximate sale date September 21, 2026

Aggregate market value $132,200.00 Proposed sale

Shares outstanding 163,054,698 shares As reported in the securities information

Earlier sale 4,584 shares; gross proceeds $880,173.84 September 17, 2026

Earlier sale 5,578 shares; gross proceeds $1,075,230.90 September 16, 2026

Earlier sale 2,817 shares; gross proceeds $345,364.20 June 22, 2026

Key Terms

Performance Shares, Rule 10b5-1, Aggregate Market Value

3 terms

Performance Shares technical

"Nature of Acquisition Transaction: Performance Shares"

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.

Rule 10b5-1 regulatory

"If Relying on Rule 10b5-1"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Aggregate Market Value financial

"Aggregate Market Value"

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.

How many ZS shares does Adam Geller propose to sell?

Adam Geller's notice lists 661 Zscaler common shares for proposed sale, an aggregate market value of $132,200.00, and an approximate sale date of September 21, 2026. Morgan Stanley Smith Barney LLC is listed as broker.

What gross proceeds were reported from Adam Geller's earlier ZS stock sales?

The notice lists gross proceeds of $880,173.84 for 4,584 shares sold on September 17, 2026; $1,075,230.90 for 5,578 shares sold on September 16, 2026; and $345,364.20 for 2,817 shares sold on June 22, 2026.

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

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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	661	132200.00	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	09/15/2026	Performance Shares	ISSUER			661	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	09/17/2026	4584	880173.84
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	09/21/2026
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)