TRANSDIGM GROUP INC

Ticker: TDG CUSIP: 893641100 Class: COM

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

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

Q3 2018
Shares 104,460 Value ($000) $38,891 Avg Close $267.24 Range $250.90 - $280.31
Q2 2018
Shares 107,407 Value ($000) $37,070 Avg Close $243.87 Range $221.45 - $258.04
Q1 2018
Shares 110,680 Value ($000) $33,972 Avg Close $218.67 Range $196.90 - $238.53
Q4 2017
Shares 125,455 Value ($000) $34,452 Avg Close $201.62 Range $189.22 - $211.95
Q3 2017
Shares 173,129 Value ($000) $44,260 Avg Close $189.94 Range $179.71 - $201.53
Q2 2017
Shares 234,634 Value ($000) $63,086 Avg Close $173.41 Range $148.53 - $187.86
Q1 2017
Shares 244,804 Value ($000) $53,896 Avg Close $163.01 Range $139.17 - $177.33
Q4 2016
Shares 1,091,745 Value ($000) $271,801 Avg Close $176.01 Range $160.64 - $189.46
Q3 2016
Shares 1,154,303 Value ($000) $333,732 Avg Close $175.41 Range $160.79 - $183.97
Q2 2016
Shares 1,150,408 Value ($000) $303,351 Avg Close $152.60 Range $135.64 - $167.49
Q1 2016
Shares 1,098,239 Value ($000) $241,986 Avg Close $136.47 Range $112.97 - $145.25
Q4 2015
Shares 1,024,957 Value ($000) $234,151 Avg Close $140.66 Range $131.38 - $149.06
Q3 2015
Shares 897,596 Value ($000) $190,658 Avg Close $143.01 Range $130.21 - $153.05