GARTNER INC

Ticker: IT CUSIP: 366651107 Class: COM

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q3 2025

Shares 1,077 Value ($000) $0 Avg Close $291.66 Range $223.65 - $409.76

Q2 2025

Shares 1,200 Value ($000) $0 Avg Close $418.44 Range $366.05 - $451.73

Q1 2025

Shares 7,154 Value ($000) $3 Avg Close $492.81 Range $409.50 - $584.01

Q4 2024

Shares 298 Value ($000) $0 Avg Close $515.55 Range $474.87 - $559.00

Q3 2024

Shares 44 Value ($000) $0 Avg Close $480.74 Range $438.52 - $521.64

Q2 2024

Shares 285 Value ($000) $0 Avg Close $444.91 Range $411.15 - $478.82

Q3 2023

Shares 1,113 Value ($000) $0 Avg Close $348.82 Range $324.30 - $377.88

Q2 2023

Shares 801 Value ($000) $0 Avg Close $325.62 Range $292.60 - $363.12

Q1 2023

Shares 2,523 Value ($000) $1 Avg Close $330.57 Range $299.07 - $356.67

Q4 2022

Shares 1,293 Value ($000) $0 Avg Close $322.72 Range $277.08 - $358.25

Q3 2022

Shares 2,444 Value ($000) $676 Avg Close $280.37 Range $231.05 - $317.63

Q4 2021

Shares 721 Value ($000) $241 Avg Close $321.54 Range $299.88 - $369.00

Q3 2021

Shares 5,873 Value ($000) $1,459 Avg Close $289.93 Range $242.87 - $327.20

Q2 2021

Shares 5,673 Value ($000) $1,374 Avg Close $218.76 Range $183.48 - $243.94

Q1 2021

Shares 227 Value ($000) $41 Avg Close $173.86 Range $149.74 - $191.66

Q3 2020

Shares 488 Value ($000) $60 Avg Close $127.15 Range $116.51 - $136.09

Q4 2018

Shares 10,170 Value ($000) $1,300 Avg Close $144.26 Range $120.89 - $160.29

Q1 2018

Shares 571 Value ($000) $67 Avg Close $124.90 Range $111.57 - $142.16

Q4 2017

Shares 255 Value ($000) $31 Avg Close $121.44 Range $115.01 - $126.22

Q2 2017

Shares 71 Value ($000) $8 Avg Close $116.06 Range $107.70 - $124.92

Q1 2017

Shares 21,452 Value ($000) $2,316 Avg Close $103.07 Range $90.37 - $112.42

Q3 2016

Shares 456 Value ($000) $40 Avg Close $93.80 Range $87.86 - $100.74

Q2 2015

Shares 112 Value ($000) $9 Avg Close $85.73 Range $82.35 - $89.10

Q1 2015

Shares 488 Value ($000) $40 Avg Close $82.51 Range $74.39 - $86.28

Q4 2014

Shares 433 Value ($000) $36 Avg Close $81.25 Range $71.22 - $87.58

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	1,077	$0	$291.66	$223.65 - $409.76
Q2 2025	1,200	$0	$418.44	$366.05 - $451.73
Q1 2025	7,154	$3	$492.81	$409.50 - $584.01
Q4 2024	298	$0	$515.55	$474.87 - $559.00
Q3 2024	44	$0	$480.74	$438.52 - $521.64
Q2 2024	285	$0	$444.91	$411.15 - $478.82
Q3 2023	1,113	$0	$348.82	$324.30 - $377.88
Q2 2023	801	$0	$325.62	$292.60 - $363.12
Q1 2023	2,523	$1	$330.57	$299.07 - $356.67
Q4 2022	1,293	$0	$322.72	$277.08 - $358.25
Q3 2022	2,444	$676	$280.37	$231.05 - $317.63
Q4 2021	721	$241	$321.54	$299.88 - $369.00
Q3 2021	5,873	$1,459	$289.93	$242.87 - $327.20
Q2 2021	5,673	$1,374	$218.76	$183.48 - $243.94
Q1 2021	227	$41	$173.86	$149.74 - $191.66
Q3 2020	488	$60	$127.15	$116.51 - $136.09
Q4 2018	10,170	$1,300	$144.26	$120.89 - $160.29
Q1 2018	571	$67	$124.90	$111.57 - $142.16
Q4 2017	255	$31	$121.44	$115.01 - $126.22
Q2 2017	71	$8	$116.06	$107.70 - $124.92
Q1 2017	21,452	$2,316	$103.07	$90.37 - $112.42
Q3 2016	456	$40	$93.80	$87.86 - $100.74
Q2 2015	112	$9	$85.73	$82.35 - $89.10
Q1 2015	488	$40	$82.51	$74.39 - $86.28
Q4 2014	433	$36	$81.25	$71.22 - $87.58