Zscaler officer Adam Geller lists $246K share sale

Past-three-month records list common-stock sales by Adam Geller on September 16, September 17, September 21, and October 9, 2026.

Rhea-AI Filing Summary

Zscaler, Inc. (ZS) officer Adam Geller reported 1,042 common shares for sale through Morgan Stanley Smith Barney LLC, with an aggregate market value of $245,859.90. The notice lists October 12, 2026 as the approximate sale date and identifies the shares as acquired from the issuer that day through a stock option exercise with cash payment. Its remarks state that sales executed on October 12, 2026 are being reported following an EDGAR holiday closure.

Key Figures

Common shares listed for sale: 1,042 shares Aggregate market value: $245,859.90 Issuer shares outstanding: 163,054,698 shares +4 more

7 metrics

Common shares listed for sale 1,042 shares Approximate sale date October 12, 2026

Aggregate market value $245,859.90 Securities listed for sale

Issuer shares outstanding 163,054,698 shares Figure listed in securities information

Common shares sold 23,958 shares October 9, 2026

Common shares sold 661 shares September 21, 2026

Common shares sold 4,584 shares September 17, 2026

Common shares sold 5,578 shares September 16, 2026

Key Terms

Rule 144, Stock Option Exercise, Securities Sold During The Past 3 Months

3 terms

Rule 144 regulatory

"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.

Stock Option Exercise financial

"Stock Option Exercise"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Securities Sold During The Past 3 Months regulatory

"Securities Sold During The Past 3 Months"

FAQ

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

How many ZS shares did Adam Geller report for sale?

Adam Geller, identified as a Zscaler officer, reported 1,042 common shares for sale, with an aggregate market value of $245,859.90 and an approximate sale date of October 12, 2026.

What earlier ZS share sales did Adam Geller report?

The notice lists sales of 23,958 shares on October 9, 2026, 661 shares on September 21, 2026, 4,584 shares on September 17, 2026, and 5,578 shares on September 16, 2026.

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

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Available on EDGAR 10/13/2026 - 08:46 AM EDT Accepted by SEC EDGAR 10/13/2026 - 08:46 AM EDT 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	4401 GREAT AMERICA PARKWAY Santa Clara CALIFORNIA 95054
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	1042	245859.90	163054698	10/12/2026	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	10/12/2026	Stock Option Exercise	ISSUER			1042	10/12/2026	Cash

* 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 4401 GREAT AMERICA PARKWAY Santa Clara CA 95054	Common	10/09/2026	23958	5400966.35
ADAM GELLER 4401 GREAT AMERICA PARKWAY Santa Clara CA 95054	Common	09/21/2026	661	132200.00
ADAM GELLER 4401 GREAT AMERICA PARKWAY Santa Clara CA 95054	Common	09/17/2026	4584	880173.84
ADAM GELLER 4401 GREAT AMERICA PARKWAY Santa Clara CA 95054	Common	09/16/2026	5578	1075230.90

144: Remarks and Signature

Remarks	Sales that were executed on October 12, 2026 are being reported on this Form 144 filed on October 13, 2026 given the EDGAR system was not accepting filings on October 12, 2026 in observance of the federal holiday.
Date of Notice	10/13/2026
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)