144 0001439796 XXXXXXXX LIVE 0000749251 GARTNER INC 001-14443 56 TOP GALLANT RD P O BOX 10212 STAMFORD CT 06904-2212 2039640096 Dawkins Alwyn Officer COMMON MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICES

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2000 997540.00 77600000 07/31/2024 NYSE COMMON 02/10/2024 PERFORMANCE SHARES ISSUER N 2000 02/10/2024 COMPENSATION N ALWYN DAWKINS

56 TOP GALLANT ROAD P.O. BOX 10212 STAMFORD CT 06902

PERFORMANCE SHARES 05/22/2024 800 363659.36 ALWYN DAWKINS

56 TOP GALLANT ROAD P.O. BOX 10212 STAMFORD CT 06902

PERFORMANCE SHARES 05/16/2024 600 268578.00 07/31/2024 /s/ Alwyn Dawkins