Gartner officer proposes $198K stock sale

The notice identifies Morgan Stanley Smith Barney LLC as broker and names the NYSE as the exchange for the common shares.

Accepted by SEC EDGAR 08/07/2026 - 04:09 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Claire Louise Herkes, an officer of Gartner, Inc., reported a proposed sale of 1,039 common shares for an aggregate market value of $198,147.69, with an approximate sale date of August 7, 2026. The shares were acquired from the issuer as performance shares on February 10, 2025.

Key Figures

Shares proposed for sale: 1,039 common shares Aggregate market value: $198,147.69 Shares outstanding: 63,148,976 shares

3 metrics

Shares proposed for sale 1,039 common shares Approximate sale date: August 7, 2026

Aggregate market value $198,147.69 Common shares proposed for sale

Shares outstanding 63,148,976 shares Number listed in the securities information

Key Terms

Performance Shares, Aggregate Market Value, Number of Shares or Other Units Outstanding

3 terms

Performance Shares financial

"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.

Aggregate Market Value financial

"Number of Shares or Other Units To Be Sold | 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.

Number of Shares or Other Units Outstanding financial

"Number of Shares or Other Units Outstanding"

FAQ

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

How many shares is Claire Louise Herkes proposing to sell in the IT notice?

Claire Louise Herkes reported a proposed sale of 1,039 common shares, with an aggregate market value of $198,147.69.

How did Claire Louise Herkes acquire the shares listed for sale?

The shares were acquired from Gartner, Inc. as performance shares on February 10, 2025.

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	0001843712
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	GARTNER, INC.
SEC File Number	001-14443
Address of Issuer	P.O. Box 10212, 56 TOP GALLANT ROAD STAMFORD CONNECTICUT 06902-7700
Phone	(203) 964-0096
Name of Person for Whose Account the Securities are To Be Sold	CLAIRE L HERKES
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	1039	198147.69	63148976	08/07/2026	NYSE

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	02/10/2025	Performance Shares	Issuer			1039	02/10/2025	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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/07/2026
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/ Claire Louise Herkes
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)