Form 4 for IT Gartner

Accepted 2025-10-03 00:00:00 ET · period of report 2025-10-01 · accession 0000749251-25-000062 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2025-10-03	2025-10-01	IT	FERGUSON DIANA SUE	Dir	J - Other	$0.00	+97	2,324	+4%	$0
D	2025-10-03	2025-10-01	IT	FERGUSON DIANA SUE	Dir	J - Other	$0.00	-97	81	-54%	$0
D	2025-10-03	2025-10-01	IT	FERGUSON DIANA SUE	Dir	A - Grant	$251.00	+97	178	+120%	+$24.3K

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2025-10-01	J	A	97	$0.00	2,324	D	—	—
2	Derivative	Common Stock Equivalent (CSE)	2025-10-01	J	D	97	$0.00	81	D	$0.00 · — to —	97 Common Stock	(F2) These are Common Stock Equivalents ("CSEs") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Gartner, Inc. Long-Term Incentive Plan ("LTIP"). The CSEs convert into Gartner common stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the LTIP.
3	Derivative	Common Stock Equivalent (CSE)	2025-10-01	A	A	97	$251.00	178	D	$0.00 · — to —	97 Common Stock	(F2) These are Common Stock Equivalents ("CSEs") received as compensation for service as an outside director of Gartner, Inc. They were granted under the Gartner, Inc. Long-Term Incentive Plan ("LTIP"). The CSEs convert into Gartner common stock on the date the outside director's continuous status as a director terminates, or as otherwise provided in the LTIP.