X0306 4 2022-11-04 0000749251 GARTNER INC IT 0001246335 FUCHS ANNE SUTHERLAND 56 TOP GALLANT RD P.O. BOX 10212 STAMFORD CT 06904-2212 1 Common Stock 2022-11-04 4 S 0 339 316.92 D 18373 D Common Stock 2022-11-04 4 S 0 106 318.24 D 18267 D Common Stock 2022-11-04 4 S 0 499 319.45 D 17768 D Common Stock 2022-11-04 4 S 0 35 320.05 D 17733 D Common Stock 2022-11-04 4 S 0 242 322.04 D 17491 D Inadvertently filed late due to an administrative error. This transaction was executed in multiple trades at prices ranging from $316.75 to $317.50. The price 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. This transaction was executed in multiple trades at prices ranging from $318.15 to $319.11. The price 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. This transaction was executed in multiple trades at prices ranging from $319.19 to $319.56. The price 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. This transaction was executed in multiple trades at prices ranging from $320.05 to $320.17. The price 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. This transaction was executed in multiple trades at prices ranging from $321.61 to $322.25. The price 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. This Form 4 reflects the reporting person's holdings as of January 18, 2023, the date of this Form 4. /s/ Kevin Tang for Anne Sutherland Fuchs 2023-01-18