TRANSDIGM GROUP INC

Ticker: TDG CUSIP: 893641100 Class: COM

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

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

Q4 2025

Shares 460,269 Value ($000) $612,089 Avg Close $1310.75 Range $1235.69 - $1367.65

Q3 2025

Shares 468,943 Value ($000) $618,076 Avg Close $1364.80 Range $1243.55 - $1519.36

Q2 2025

Shares 477,032 Value ($000) $725,394 Avg Close $1314.14 Range $1107.45 - $1430.11

Q1 2025

Shares 472,985 Value ($000) $654,275 Avg Close $1247.54 Range $1160.54 - $1316.81

Q4 2024

Shares 489,710 Value ($000) $620,600 Avg Close $1229.53 Range $1150.91 - $1333.02

Q3 2024

Shares 450,120 Value ($000) $642,380 Avg Close $1152.37 Range $1042.46 - $1269.97

Q2 2024

Shares 460,982 Value ($000) $588,955 Avg Close $1136.24 Range $1050.85 - $1213.74

Q1 2024

Shares 471,452 Value ($000) $580,640 Avg Close $997.72 Range $861.47 - $1097.97

Q4 2023

Shares 498,933 Value ($000) $504,721 Avg Close $802.78 Range $685.93 - $902.61

Q3 2023

Shares 516,049 Value ($000) $435,096 Avg Close $749.90 Range $712.93 - $803.50

Q2 2023

Shares 485,518 Value ($000) $434,136 Avg Close $676.05 Range $611.15 - $768.93

Q1 2023

Shares 500,895 Value ($000) $369,185 Avg Close $610.68 Range $533.03 - $659.90

Q4 2022

Shares 505,520 Value ($000) $318,301 Avg Close $503.62 Range $427.08 - $554.24

Q3 2022

Shares 512,728 Value ($000) $269,091 Avg Close $502.76 Range $427.88 - $565.18

Q2 2022

Shares 528,065 Value ($000) $283,397 Avg Close $490.58 Range $415.64 - $563.58

Q1 2022

Shares 558,502 Value ($000) $363,885 Avg Close $534.00 Range $477.93 - $569.10

Q4 2021

Shares 574,061 Value ($000) $365,263 Avg Close $520.38 Range $459.39 - $570.21

Q3 2021

Shares 576,421 Value ($000) $360,014 Avg Close $519.19 Range $482.92 - $550.47

Q2 2021

Shares 583,501 Value ($000) $377,693 Avg Close $521.39 Range $479.18 - $571.85

Q1 2021

Shares 598,476 Value ($000) $351,856 Avg Close $489.77 Range $430.01 - $520.29

Q4 2020

Shares 603,524 Value ($000) $373,491 Avg Close $457.04 Range $377.14 - $517.44

Q3 2020

Shares 616,562 Value ($000) $292,940 Avg Close $390.77 Range $336.62 - $439.84

Q2 2020

Shares 576,341 Value ($000) $254,771 Avg Close $314.55 Range $216.10 - $446.79

Q1 2020

Shares 524,082 Value ($000) $167,806 Avg Close $452.74 Range $166.28 - $559.78

Q4 2019

Shares 514,957 Value ($000) $288,377 Avg Close $431.37 Range $390.88 - $473.78

Q3 2019

Shares 512,088 Value ($000) $266,629 Avg Close $392.06 Range $338.00 - $426.07

Q2 2019

Shares 533,832 Value ($000) $258,268 Avg Close $347.24 Range $325.07 - $371.97

Q1 2019

Shares 522,495 Value ($000) $237,208 Avg Close $301.26 Range $241.12 - $338.24

Q4 2018

Shares 517,082 Value ($000) $175,839 Avg Close $254.69 Range $228.13 - $278.59

Q3 2018

Shares 498,286 Value ($000) $185,511 Avg Close $267.24 Range $250.90 - $280.31

Q2 2018

Shares 505,345 Value ($000) $174,414 Avg Close $243.87 Range $221.45 - $258.04

Q1 2018

Shares 507,927 Value ($000) $155,903 Avg Close $218.67 Range $196.90 - $238.53

Q4 2017

Shares 522,281 Value ($000) $143,429 Avg Close $201.62 Range $189.22 - $211.95

Q3 2017

Shares 535,425 Value ($000) $136,881 Avg Close $189.94 Range $179.71 - $201.53

Q2 2017

Shares 513,461 Value ($000) $138,054 Avg Close $173.41 Range $148.53 - $187.86

Q1 2017

Shares 533,974 Value ($000) $117,559 Avg Close $163.01 Range $139.17 - $177.33

Q4 2016

Shares 536,791 Value ($000) $133,639 Avg Close $176.01 Range $160.64 - $189.46

Q3 2016

Shares 640,622 Value ($000) $185,216 Avg Close $175.41 Range $160.79 - $183.97

Q2 2016

Shares 651,880 Value ($000) $171,895 Avg Close $152.60 Range $135.64 - $167.49

Q1 2016

Shares 381,312 Value ($000) $83,055 Avg Close $136.47 Range $112.97 - $145.25

Q4 2015

Shares 376,818 Value ($000) $86,084 Avg Close $140.66 Range $131.38 - $149.06

Q3 2015

Shares 396,940 Value ($000) $84,315 Avg Close $143.01 Range $130.21 - $153.05

Q2 2015

Shares 286,464 Value ($000) $64,361 Avg Close $140.09 Range $132.07 - $145.10

Q1 2015

Shares 405,987 Value ($000) $88,798 Avg Close $131.65 Range $121.43 - $141.37

Q4 2014

Shares 398,783 Value ($000) $78,301 Avg Close $117.83 Range $104.12 - $125.64

Q3 2014

Shares 411,206 Value ($000) $75,798 Avg Close $111.57 Range $102.95 - $120.15

Q2 2014

Shares 325,331 Value ($000) $54,415 Avg Close $101.01 Range $93.79 - $108.05

Q1 2014

Shares 445,072 Value ($000) $82,428 Avg Close $95.29 Range $86.57 - $102.25

Q4 2013

Shares 334,610 Value ($000) $53,879 Avg Close $81.23 Range $74.58 - $88.80

Q3 2013

Shares 334,650 Value ($000) $46,416 Avg Close $76.29 Range $70.62 - $81.77

Q2 2013

Shares 353,692 Value ($000) $55,449 Avg Close $70.58 Range $67.23 - $77.43

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	460,269	$612,089	$1310.75	$1235.69 - $1367.65
Q3 2025	468,943	$618,076	$1364.80	$1243.55 - $1519.36
Q2 2025	477,032	$725,394	$1314.14	$1107.45 - $1430.11
Q1 2025	472,985	$654,275	$1247.54	$1160.54 - $1316.81
Q4 2024	489,710	$620,600	$1229.53	$1150.91 - $1333.02
Q3 2024	450,120	$642,380	$1152.37	$1042.46 - $1269.97
Q2 2024	460,982	$588,955	$1136.24	$1050.85 - $1213.74
Q1 2024	471,452	$580,640	$997.72	$861.47 - $1097.97
Q4 2023	498,933	$504,721	$802.78	$685.93 - $902.61
Q3 2023	516,049	$435,096	$749.90	$712.93 - $803.50
Q2 2023	485,518	$434,136	$676.05	$611.15 - $768.93
Q1 2023	500,895	$369,185	$610.68	$533.03 - $659.90
Q4 2022	505,520	$318,301	$503.62	$427.08 - $554.24
Q3 2022	512,728	$269,091	$502.76	$427.88 - $565.18
Q2 2022	528,065	$283,397	$490.58	$415.64 - $563.58
Q1 2022	558,502	$363,885	$534.00	$477.93 - $569.10
Q4 2021	574,061	$365,263	$520.38	$459.39 - $570.21
Q3 2021	576,421	$360,014	$519.19	$482.92 - $550.47
Q2 2021	583,501	$377,693	$521.39	$479.18 - $571.85
Q1 2021	598,476	$351,856	$489.77	$430.01 - $520.29
Q4 2020	603,524	$373,491	$457.04	$377.14 - $517.44
Q3 2020	616,562	$292,940	$390.77	$336.62 - $439.84
Q2 2020	576,341	$254,771	$314.55	$216.10 - $446.79
Q1 2020	524,082	$167,806	$452.74	$166.28 - $559.78
Q4 2019	514,957	$288,377	$431.37	$390.88 - $473.78
Q3 2019	512,088	$266,629	$392.06	$338.00 - $426.07
Q2 2019	533,832	$258,268	$347.24	$325.07 - $371.97
Q1 2019	522,495	$237,208	$301.26	$241.12 - $338.24
Q4 2018	517,082	$175,839	$254.69	$228.13 - $278.59
Q3 2018	498,286	$185,511	$267.24	$250.90 - $280.31
Q2 2018	505,345	$174,414	$243.87	$221.45 - $258.04
Q1 2018	507,927	$155,903	$218.67	$196.90 - $238.53
Q4 2017	522,281	$143,429	$201.62	$189.22 - $211.95
Q3 2017	535,425	$136,881	$189.94	$179.71 - $201.53
Q2 2017	513,461	$138,054	$173.41	$148.53 - $187.86
Q1 2017	533,974	$117,559	$163.01	$139.17 - $177.33
Q4 2016	536,791	$133,639	$176.01	$160.64 - $189.46
Q3 2016	640,622	$185,216	$175.41	$160.79 - $183.97
Q2 2016	651,880	$171,895	$152.60	$135.64 - $167.49
Q1 2016	381,312	$83,055	$136.47	$112.97 - $145.25
Q4 2015	376,818	$86,084	$140.66	$131.38 - $149.06
Q3 2015	396,940	$84,315	$143.01	$130.21 - $153.05
Q2 2015	286,464	$64,361	$140.09	$132.07 - $145.10
Q1 2015	405,987	$88,798	$131.65	$121.43 - $141.37
Q4 2014	398,783	$78,301	$117.83	$104.12 - $125.64
Q3 2014	411,206	$75,798	$111.57	$102.95 - $120.15
Q2 2014	325,331	$54,415	$101.01	$93.79 - $108.05
Q1 2014	445,072	$82,428	$95.29	$86.57 - $102.25
Q4 2013	334,610	$53,879	$81.23	$74.58 - $88.80
Q3 2013	334,650	$46,416	$76.29	$70.62 - $81.77
Q2 2013	353,692	$55,449	$70.58	$67.23 - $77.43