X0306 4 2022-06-02 0000749251 GARTNER INC IT 0001185567 GRABE WILLIAM O 56 TOP GALLANT RD P.O. BOX 10212 STAMFORD CT 06904-2212 1 Common Stock 2022-06-03 4 M 0 1029 0 A 1099 D Common Stock 26665 I 2019 GRAT Restricted Stock Units 0 2022-06-02 4 A 0 893 0 A Common Stock 893 893 D Restricted Stock Units 0 2022-06-03 4 M 0 1029 0 D Common Stock 1029 0 D One hundred percent (100%) of the RSUs shall vest on June 2, 2023, subject to Grantee's continued service as a director through such date. This award vested in its entirety on June 3, 2022. These shares are held in a grantor retained annuity trust created on November 22, 2019 when the reporting person transferred 49,708 Gartner shares to the trust (the "2019 GRAT"). These shares are held in trust for the benefit of the reporting person and his children. On November 23, 2020, 14,657 shares were distributed from the 2019 GRAT to the reporting person, and on December 13, 2021, 8,386 shares were distributed from the 2019 GRAT to the reporting person. The reporting person is the Trustee of the 2019 GRAT. /s/ Kevin Tang for William O. Grabe 2022-06-03