Form 4 for IT Gartner

Accepted 2026-01-06 00:00:00 ET · period of report 2026-01-02 · accession 0000749251-26-000011 · 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	2026-01-06	2026-01-02	IT	FERGUSON DIANA SUE	Dir	J - Other	$0.00	+108	2,432	+5%	$0
D	2026-01-06	2026-01-02	IT	FERGUSON DIANA SUE	Dir	J - Other	$0.00	-108	81	-57%	$0
D	2026-01-06	2026-01-02	IT	FERGUSON DIANA SUE	Dir	A - Grant	$237.03	+108	189	+133%	+$25.6K

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	2026-01-02	J	A	108	$0.00	2,432	D	—	—
2	Derivative	Common Stock Equivalent (CSE)	2026-01-02	J	D	108	$0.00	81	D	$0.00 · — to —	108 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)	2026-01-02	A	A	108	$237.03	189	D	$0.00 · — to —	108 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.