GARTNER INC

Ticker: IT CUSIP: 366651107 Class: COM

ADAGE CAPITAL PARTNERS GP, L.L.C.'s Holding History (CIK: 0001165408)

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

Q4 2025

Shares 65,100 Value ($000) $16,423 Avg Close $240.69 Range $222.54 - $264.90

Q3 2025

Shares 68,900 Value ($000) $18,112 Avg Close $291.66 Range $223.65 - $409.76

Q2 2025

Shares 65,500 Value ($000) $26,476 Avg Close $418.44 Range $366.05 - $451.73

Q1 2025

Shares 70,100 Value ($000) $29,424 Avg Close $492.81 Range $409.50 - $584.01

Q4 2024

Shares 72,100 Value ($000) $34,930 Avg Close $515.55 Range $474.87 - $559.00

Q3 2024

Shares 72,600 Value ($000) $36,791 Avg Close $480.74 Range $438.52 - $521.64

Q2 2024

Shares 74,500 Value ($000) $33,455 Avg Close $444.91 Range $411.15 - $478.82

Q1 2024

Shares 76,500 Value ($000) $36,465 Avg Close $460.24 Range $424.53 - $486.54

Q4 2023

Shares 75,700 Value ($000) $34,149 Avg Close $399.48 Range $323.61 - $469.58

Q3 2023

Shares 78,400 Value ($000) $26,939 Avg Close $348.82 Range $324.30 - $377.88

Q2 2023

Shares 78,800 Value ($000) $27,604 Avg Close $325.62 Range $292.60 - $363.12

Q1 2023

Shares 79,100 Value ($000) $25,768 Avg Close $330.57 Range $299.07 - $356.67

Q4 2022

Shares 80,400 Value ($000) $27,026 Avg Close $322.72 Range $277.08 - $358.25

Q3 2022

Shares 80,600 Value ($000) $22,301 Avg Close $280.37 Range $231.05 - $317.63

Q2 2022

Shares 83,900 Value ($000) $20,290 Avg Close $266.05 Range $221.39 - $316.11

Q1 2022

Shares 85,900 Value ($000) $25,552 Avg Close $289.54 Range $257.50 - $334.53

Q4 2021

Shares 67,600 Value ($000) $22,600 Avg Close $321.54 Range $299.88 - $369.00

Q3 2021

Shares 88,300 Value ($000) $26,833 Avg Close $289.93 Range $242.87 - $327.20

Q2 2021

Shares 97,100 Value ($000) $23,518 Avg Close $218.76 Range $183.48 - $243.94

Q1 2021

Shares 99,300 Value ($000) $18,127 Avg Close $173.86 Range $149.74 - $191.66

Q4 2020

Shares 98,200 Value ($000) $15,731 Avg Close $144.06 Range $115.86 - $162.94

Q3 2020

Shares 98,400 Value ($000) $12,295 Avg Close $127.15 Range $116.51 - $136.09

Q2 2020

Shares 86,600 Value ($000) $10,507 Avg Close $115.55 Range $88.81 - $138.72

Q1 2020

Shares 98,800 Value ($000) $9,838 Avg Close $137.00 Range $76.91 - $165.27

Q4 2019

Shares 84,100 Value ($000) $12,960 Avg Close $152.69 Range $136.70 - $162.73

Q3 2019

Shares 110,250 Value ($000) $15,765 Avg Close $145.37 Range $124.77 - $171.78

Q2 2019

Shares 111,250 Value ($000) $17,905 Avg Close $156.37 Range $148.17 - $162.79

Q1 2019

Shares 86,450 Value ($000) $13,113 Avg Close $138.79 Range $122.50 - $151.83

Q4 2018

Shares 110,750 Value ($000) $14,158 Avg Close $144.26 Range $120.89 - $160.29

Q3 2018

Shares 116,250 Value ($000) $18,426 Avg Close $144.99 Range $128.00 - $161.21

Q2 2018

Shares 121,200 Value ($000) $16,107 Avg Close $128.01 Range $114.40 - $138.88

Q1 2018

Shares 64,600 Value ($000) $7,598 Avg Close $124.90 Range $111.57 - $142.16

Q4 2017

Shares 127,700 Value ($000) $15,726 Avg Close $121.44 Range $115.01 - $126.22

Q3 2017

Shares 127,700 Value ($000) $15,887 Avg Close $123.59 Range $115.86 - $130.02

Q2 2017

Shares 129,000 Value ($000) $15,933 Avg Close $116.06 Range $107.70 - $124.92

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	65,100	$16,423	$240.69	$222.54 - $264.90
Q3 2025	68,900	$18,112	$291.66	$223.65 - $409.76
Q2 2025	65,500	$26,476	$418.44	$366.05 - $451.73
Q1 2025	70,100	$29,424	$492.81	$409.50 - $584.01
Q4 2024	72,100	$34,930	$515.55	$474.87 - $559.00
Q3 2024	72,600	$36,791	$480.74	$438.52 - $521.64
Q2 2024	74,500	$33,455	$444.91	$411.15 - $478.82
Q1 2024	76,500	$36,465	$460.24	$424.53 - $486.54
Q4 2023	75,700	$34,149	$399.48	$323.61 - $469.58
Q3 2023	78,400	$26,939	$348.82	$324.30 - $377.88
Q2 2023	78,800	$27,604	$325.62	$292.60 - $363.12
Q1 2023	79,100	$25,768	$330.57	$299.07 - $356.67
Q4 2022	80,400	$27,026	$322.72	$277.08 - $358.25
Q3 2022	80,600	$22,301	$280.37	$231.05 - $317.63
Q2 2022	83,900	$20,290	$266.05	$221.39 - $316.11
Q1 2022	85,900	$25,552	$289.54	$257.50 - $334.53
Q4 2021	67,600	$22,600	$321.54	$299.88 - $369.00
Q3 2021	88,300	$26,833	$289.93	$242.87 - $327.20
Q2 2021	97,100	$23,518	$218.76	$183.48 - $243.94
Q1 2021	99,300	$18,127	$173.86	$149.74 - $191.66
Q4 2020	98,200	$15,731	$144.06	$115.86 - $162.94
Q3 2020	98,400	$12,295	$127.15	$116.51 - $136.09
Q2 2020	86,600	$10,507	$115.55	$88.81 - $138.72
Q1 2020	98,800	$9,838	$137.00	$76.91 - $165.27
Q4 2019	84,100	$12,960	$152.69	$136.70 - $162.73
Q3 2019	110,250	$15,765	$145.37	$124.77 - $171.78
Q2 2019	111,250	$17,905	$156.37	$148.17 - $162.79
Q1 2019	86,450	$13,113	$138.79	$122.50 - $151.83
Q4 2018	110,750	$14,158	$144.26	$120.89 - $160.29
Q3 2018	116,250	$18,426	$144.99	$128.00 - $161.21
Q2 2018	121,200	$16,107	$128.01	$114.40 - $138.88
Q1 2018	64,600	$7,598	$124.90	$111.57 - $142.16
Q4 2017	127,700	$15,726	$121.44	$115.01 - $126.22
Q3 2017	127,700	$15,887	$123.59	$115.86 - $130.02
Q2 2017	129,000	$15,933	$116.06	$107.70 - $124.92