TRANSDIGM GROUP INC

Ticker: TDG CUSIP: 893641100 Class: COM

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q4 2025

Shares 1,311 Value ($000) $1,743 Avg Close $1310.75 Range $1235.69 - $1367.65

Q3 2025

Shares 1,475 Value ($000) $1,944 Avg Close $1364.80 Range $1243.55 - $1519.36

Q2 2025

Shares 3,002 Value ($000) $4,565 Avg Close $1314.14 Range $1107.45 - $1430.11

Q1 2025

Shares 3,768 Value ($000) $5,212 Avg Close $1247.54 Range $1160.54 - $1316.81

Q4 2024

Shares 2,938 Value ($000) $3,723 Avg Close $1229.53 Range $1150.91 - $1333.02

Q3 2024

Shares 2,929 Value ($000) $4,180 Avg Close $1152.37 Range $1042.46 - $1269.97

Q2 2024

Shares 2,871 Value ($000) $3,668 Avg Close $1136.24 Range $1050.85 - $1213.74

Q1 2024

Shares 3,074 Value ($000) $3,786 Avg Close $997.72 Range $861.47 - $1097.97

Q4 2023

Shares 1,892 Value ($000) $1,914 Avg Close $802.78 Range $685.93 - $902.61

Q3 2023

Shares 1,267 Value ($000) $1,068 Avg Close $749.90 Range $712.93 - $803.50

Q2 2023

Shares 730 Value ($000) $653 Avg Close $676.05 Range $611.15 - $768.93

Q1 2023

Shares 395 Value ($000) $291 Avg Close $610.68 Range $533.03 - $659.90

Q4 2022

Shares 402 Value ($000) $253 Avg Close $503.62 Range $427.08 - $554.24

Q3 2022

Shares 473 Value ($000) $248 Avg Close $502.76 Range $427.88 - $565.18

Q2 2022

Shares 477 Value ($000) $256 Avg Close $490.58 Range $415.64 - $563.58

Q1 2022

Shares 479 Value ($000) $312 Avg Close $534.00 Range $477.93 - $569.10

Q4 2021

Shares 501 Value ($000) $319 Avg Close $520.38 Range $459.39 - $570.21

Q3 2021

Shares 533 Value ($000) $333 Avg Close $519.19 Range $482.92 - $550.47

Q2 2021

Shares 596 Value ($000) $386 Avg Close $521.39 Range $479.18 - $571.85

Q1 2021

Shares 608 Value ($000) $357 Avg Close $489.77 Range $430.01 - $520.29

Q4 2020

Shares 621 Value ($000) $384 Avg Close $457.04 Range $377.14 - $517.44

Q3 2020

Shares 612 Value ($000) $291 Avg Close $390.77 Range $336.62 - $439.84

Q2 2020

Shares 613 Value ($000) $271 Avg Close $314.55 Range $216.10 - $446.79

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,311	$1,743	$1310.75	$1235.69 - $1367.65
Q3 2025	1,475	$1,944	$1364.80	$1243.55 - $1519.36
Q2 2025	3,002	$4,565	$1314.14	$1107.45 - $1430.11
Q1 2025	3,768	$5,212	$1247.54	$1160.54 - $1316.81
Q4 2024	2,938	$3,723	$1229.53	$1150.91 - $1333.02
Q3 2024	2,929	$4,180	$1152.37	$1042.46 - $1269.97
Q2 2024	2,871	$3,668	$1136.24	$1050.85 - $1213.74
Q1 2024	3,074	$3,786	$997.72	$861.47 - $1097.97
Q4 2023	1,892	$1,914	$802.78	$685.93 - $902.61
Q3 2023	1,267	$1,068	$749.90	$712.93 - $803.50
Q2 2023	730	$653	$676.05	$611.15 - $768.93
Q1 2023	395	$291	$610.68	$533.03 - $659.90
Q4 2022	402	$253	$503.62	$427.08 - $554.24
Q3 2022	473	$248	$502.76	$427.88 - $565.18
Q2 2022	477	$256	$490.58	$415.64 - $563.58
Q1 2022	479	$312	$534.00	$477.93 - $569.10
Q4 2021	501	$319	$520.38	$459.39 - $570.21
Q3 2021	533	$333	$519.19	$482.92 - $550.47
Q2 2021	596	$386	$521.39	$479.18 - $571.85
Q1 2021	608	$357	$489.77	$430.01 - $520.29
Q4 2020	621	$384	$457.04	$377.14 - $517.44
Q3 2020	612	$291	$390.77	$336.62 - $439.84
Q2 2020	613	$271	$314.55	$216.10 - $446.79