DEFA14A 1 a2025gartnerincdefa14a.htm DEFA14A

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 | x |  | Filed by a Party other than the Registrant | ¨

Check the appropriate box:

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

GARTNER, INC.
(Name of Registrant as Specified in Its Charter)
Payment of Filing Fee (Check all boxes that apply):

x | 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.