TRANSDIGM GROUP INC

Ticker: TDG CUSIP: 893641100 Class: COM

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q4 2019

Shares 594 Value ($000) $333 Avg Close $431.37 Range $390.88 - $473.78

Q4 2016

Shares 2,289 Value ($000) $570 Avg Close $176.01 Range $160.64 - $189.46

Q3 2016

Shares 5,929 Value ($000) $1,714 Avg Close $175.41 Range $160.79 - $183.97

Q2 2016

Shares 5,134 Value ($000) $1,354 Avg Close $152.60 Range $135.64 - $167.49

Q1 2016

Shares 2,936 Value ($000) $647 Avg Close $136.47 Range $112.97 - $145.25

Q4 2015

Shares 3,146 Value ($000) $719 Avg Close $140.66 Range $131.38 - $149.06

Q3 2015

Shares 3,154 Value ($000) $670 Avg Close $143.01 Range $130.21 - $153.05

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	594	$333	$431.37	$390.88 - $473.78
Q4 2016	2,289	$570	$176.01	$160.64 - $189.46
Q3 2016	5,929	$1,714	$175.41	$160.79 - $183.97
Q2 2016	5,134	$1,354	$152.60	$135.64 - $167.49
Q1 2016	2,936	$647	$136.47	$112.97 - $145.25
Q4 2015	3,146	$719	$140.66	$131.38 - $149.06
Q3 2015	3,154	$670	$143.01	$130.21 - $153.05