X0306 4 2022-11-02 0000749251 GARTNER INC IT 0001610073 Safian Craig 56 TOP GALLANT ROAD STAMFORD CT 06904 1 EVP & CFO Common Stock 2022-11-02 4 M 0 5378 99.07 A 67375 D Common Stock 2022-11-02 4 D 0 1673 318.51 D 65702 D Common Stock 2022-11-02 4 F 0 1891 318.51 D 63811 D Common Stock 2022-11-02 4 S 0 4967 327.38 D 58844 D Stock Appreciation Rights 99.07 2022-11-02 4 M 0 5378 0 D 2018-02-06 2024-02-06 Common Stock 5378 0 D Represents shares acquired upon exercise of SARs. Represents shares withheld that had an aggregate value, based on the market price on the date of exercise, substantially equal to the aggregate exercise price of the SARs. Represents shares withheld from the settlement of the SARs for the payment of applicable income and payroll tax withholding due upon exercise. These SARs were part of an award that became exercisable in four substantially equal annual installments, commencing on February 6, 2018. This transaction was executed in multiple trades at prices ranging from $327.00 to $327.82. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. /s/ Kevin Tang for Craig Safian 2022-11-04