Gartner (IT) EVP Claire Herkes sells 1,039 shares at $190.71 each

Rhea-AI Filing Summary

Gartner Inc executive Claire Herkes, EVP, Conferences, reported selling 1,039 shares of common stock on 2026-08-07 at $190.71 per share in an open market or private transaction. Following this sale, Herkes directly holds 5,252 shares of Gartner common stock. The transaction was not under a Rule 10b5-1 plan.

Insider Trade Summary

Net Seller: 1,039 shares

Net Sell 1 txn

Insider Herkes Claire

Role EVP, Conferences

Sold 1,039 shs ($198K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,039	$190.71	$198K

Holdings After Transaction: Common Stock — 5,252 shares (Direct)

Key Figures

Shares sold: 1,039 shares Sale price: $190.71 per share Shares held after sale: 5,252 shares

3 metrics

Shares sold 1,039 shares Common stock sale on 2026-08-07 by EVP, Conferences

Sale price $190.71 per share Per-share price for the 1,039-share common stock sale

Shares held after sale 5,252 shares Direct ownership reported following the transaction

Key Terms

Rule 10b5-1, Common Stock, open market or private transaction

3 terms

Rule 10b5-1 regulatory

"The Rule 10b5-1 checkbox is not affirmed for this transaction"

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.

Common Stock financial

"security_title is listed as Common Stock for the transaction"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

open market or private transaction financial

"transaction_code_description notes a Sale in open market or private transaction"

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/11/2026 - 04:15 PM Accepted by SEC EDGAR 08/11/2026 - 04:14 PM Learn about SEC filing dates

FAQ

What insider transaction did Gartner (IT) report for Claire Herkes?

Gartner reported that EVP, Conferences, Claire Herkes sold 1,039 shares of common stock on 2026-08-07. The sale was reported as a standard open market or private transaction, with updated post-transaction holdings also disclosed.

At what price did Claire Herkes sell Gartner (IT) shares?

Claire Herkes sold 1,039 Gartner shares at a price of $190.71 per share. This price is reported on the Form 4 as a per-share transaction price for the non-derivative common stock sale on 2026-08-07.

How many Gartner (IT) shares does Claire Herkes hold after the sale?

After the reported sale, Claire Herkes directly holds 5,252 shares of Gartner common stock. This post-transaction ownership figure reflects her remaining direct holdings as of the Form 4 reporting date following the 1,039-share disposition.

Was Claire Herkes’ Gartner (IT) stock sale under a Rule 10b5-1 plan?

The Form 4 indicates the Rule 10b5-1 checkbox is not affirmed, meaning the sale was not reported as made pursuant to a 10b5-1 trading plan. The transaction is classified as a standard open market or private sale.

What role does Claire Herkes hold at Gartner (IT)?

Claire Herkes is identified as an officer of Gartner with the title EVP, Conferences. Her status as a company officer requires reporting transactions in Gartner common stock on Form 4, including this 1,039-share sale.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Herkes Claire

(Last) (First) (Middle)

56 TOP GALLANT ROAD

(Street)

STAMFORD CONNECTICUT 06902

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
GARTNER INC [ IT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Conferences

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/07/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/07/2026		S		1,039	D	$190.71	5,252	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Kevin Tang for Claire Herkes	08/11/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)