GARTNER INC

Ticker: IT CUSIP: 366651107 Class: COM

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q2 2016

Shares 831,870 Value ($000) $81,032 Avg Close $95.03 Range $86.17 - $103.00

Q1 2016

Shares 1,014,781 Value ($000) $90,671 Avg Close $84.54 Range $77.80 - $89.73

Q4 2015

Shares 1,003,147 Value ($000) $90,985 Avg Close $88.55 Range $81.52 - $94.82

Q3 2015

Shares 822,310 Value ($000) $69,016 Avg Close $87.10 Range $79.93 - $92.46

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2016	831,870	$81,032	$95.03	$86.17 - $103.00
Q1 2016	1,014,781	$90,671	$84.54	$77.80 - $89.73
Q4 2015	1,003,147	$90,985	$88.55	$81.52 - $94.82
Q3 2015	822,310	$69,016	$87.10	$79.93 - $92.46