# EDGAR Filing Document

**Accession Number:** 0000749251
**File Stem:** 0000749251-26-000160
**Filing Date:** 2026-4
**Character Count:** 2194
**Document Hash:** 126e50365713c178b7ac548a119d7bfc
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000749251-26-000160.hdr.sgml**: 20260415

**ACCESSION NUMBER**: 0000749251-26-000160

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260415

**DATE AS OF CHANGE**: 20260415

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** GARTNER INC
- **CENTRAL INDEX KEY:** 0000749251
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-MANAGEMENT SERVICES [8741]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 043099750
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-14443
- **FILM NUMBER:** 26864235

**BUSINESS ADDRESS:**
- **STREET 1:** 56 TOP GALLANT RD
- **STREET 2:** P O BOX 10212
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06904-2212
- **BUSINESS PHONE:** 2039640096

**MAIL ADDRESS:**
- **STREET 1:** 56 TOP GALLANT RD
- **STREET 2:** P O BOX 10212
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06904-2212

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GARTNER GROUP INC
- **DATE OF NAME CHANGE:** 19930823

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

_______________________________

**SCHEDULE 14A**

**Proxy Statement Pursuant to Section 14(a) of the**

**Securities Exchange Act of 1934**

_______________________________

Filed by the Registrant ⌧ Filed by a Party other than the Registrant ◻

Check the appropriate box:

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| | |
|:---|:---|
| ◻ | Preliminary Proxy Statement |
| ◻ | **Confidential, For Use of the Commission only (as permitted by Rule 14a-6(e)(2))** |
| ◻ | Definitive Proxy Statement |
| ⌧ | Definitive Additional Materials |
| ◻ | Soliciting Material Pursuant to Rule 14a-12 |

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**GARTNER, INC.**

**(Name of Registrant as Specified in Its Charter)**

Payment of Filing Fee (Check all boxes that apply):

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| | |
|:---|:---|
| ⌧ | No fee required. |
| ◻ | Fee paid previously with preliminary materials. |
| ◻ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

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