TRANSDIGM GROUP INC

Ticker: TDG CUSIP: 893641100 Class: COM

WELCH & FORBES LLC's Holding History (CIK: 0000105495)

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

Q4 2025

Shares 174 Value ($000) $231 Avg Close $1310.75 Range $1235.69 - $1367.65

Q3 2025

Shares 174 Value ($000) $229 Avg Close $1364.80 Range $1243.55 - $1519.36

Q2 2025

Shares 178 Value ($000) $271 Avg Close $1314.14 Range $1107.45 - $1430.11

Q1 2025

Shares 177 Value ($000) $245 Avg Close $1247.54 Range $1160.54 - $1316.81

Q4 2024

Shares 177 Value ($000) $224 Avg Close $1229.53 Range $1150.91 - $1333.02

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	174	$231	$1310.75	$1235.69 - $1367.65
Q3 2025	174	$229	$1364.80	$1243.55 - $1519.36
Q2 2025	178	$271	$1314.14	$1107.45 - $1430.11
Q1 2025	177	$245	$1247.54	$1160.54 - $1316.81
Q4 2024	177	$224	$1229.53	$1150.91 - $1333.02