GARTNER INC

Ticker: IT CUSIP: 366651107 Class: COM

Optiver Holding B.V.'s Holding History (CIK: 0001859606)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 233 Value ($000) $59 Avg Close $240.69 Range $222.54 - $264.90

Q2 2024

Shares 168 Value ($000) $75 Avg Close $444.91 Range $411.15 - $478.82

Q1 2024

Shares 44 Value ($000) $21 Avg Close $460.24 Range $424.53 - $486.54

Q4 2021

Shares 8 Value ($000) $2 Avg Close $321.54 Range $299.88 - $369.00

Q3 2021

Shares 8 Value ($000) $2 Avg Close $289.93 Range $242.87 - $327.20

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	233	$59	$240.69	$222.54 - $264.90
Q2 2024	168	$75	$444.91	$411.15 - $478.82
Q1 2024	44	$21	$460.24	$424.53 - $486.54
Q4 2021	8	$2	$321.54	$299.88 - $369.00
Q3 2021	8	$2	$289.93	$242.87 - $327.20