TransDigm Group Incorporated TDG NYSE

NYSE • Industrials • Aerospace & Defense • US • USD

SharesGrow Score

73/100

4/7 Pass

SharesGrow Intrinsic Value

TransDigm Group Incorporated (TDG) has 18 known insider and institutional holders on record. The largest holder is SMALL ROBERT J with 366,142 shares. Other notable holders include HENNESSY SEAN P and BARR DAVID.

Over the last 12 months, insiders have made 106 transactions in TDG stock — 32 buys (valued at $94.49M) and 38 sells (valued at $43.58M). Insider selling has exceeded buying during this period.

TDG Insider Ownership

Top Holder

SMALL ROBERT J

366,142 shares

Buys (12 mo)

$94.49M value

Sells (12 mo)

$43.58M value

12-Month Transaction Activity

Buy 30%

Sell 36%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Small Robert J	Director	366,142	2026-02-27	100%
2	Hennessy Sean P	Director	33,790	2026-03-23	9%
3	Barr David	Director	32,179	2026-03-23	9%
4	Stein Kevin M	Director	17,940	2026-02-03	5%
5	Vadiee Armani	Gc, Cco, Secretary	17,100	2025-11-06	5%
6	Valladares Iii Jorge L.	Director	11,085	2025-03-26	3%
7	Valladares Jorge	Director	11,058	2024-09-27	3%
8	Palmer Peter	Director	4,030	2026-03-23	1%
9	Reiss Joel	Co-chief Operating Officer	3,600	2026-03-17	1%
10	Wynne Sarah	Chief Financial Officer	3,506	2026-02-06	1%
11	Lisman Michael	President & CEO	3,259	2026-02-09	1%
12	Graff Michael	Director	1,683	2026-03-23	0%
13	Murphy Patrick Joseph	Co-chief Operating Officer	1,055	2026-02-03	0%
14	Mccullough Gary E	Director	952	2026-03-23	0%
15	Santana Michele	Director	771	2026-03-23	0%
16	Cronin Jane M.	Director	700	2026-03-23	0%
17	Warren Jessica L	Gc, Cco, Secretary	575	2025-05-13	0%
18	Howley W Nicholas	Director	113	2026-03-23	0%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-03-20	Cronin Jane M.	Director	RSU Award	30	$1,214.66	$36.44K
2026-03-20	Santana Michele	Director	RSU Award	30	$1,214.66	$36.44K
2026-03-20	Palmer Peter	Director	RSU Award	30	$1,214.66	$36.44K
2026-03-20	Howley W Nicholas	Director	RSU Award	113	$1,214.66	$137.26K
2026-03-20	Graff Michael	Director	RSU Award	30	$1,214.66	$36.44K
2026-03-20	Barr David	Director	RSU Award	41	$1,214.66	$49.8K
2026-03-20	Hennessy Sean P	Director	RSU Award	41	$1,214.66	$49.8K
2026-03-20	Mccullough Gary E	Director	RSU Award	37	$1,214.66	$44.94K
2026-03-18	Howley W Nicholas	Director	Option Exercise (Sell)	10,132	$50.92	$515.92K
2026-03-16	Reiss Joel	Co-chief Operating Officer	Informative Sell	187	$1,250.25	$233.8K
2026-02-25	Small Robert J	Director	Informative Buy	1	$1,285.00	$1.29K
2026-02-24	Murphy Patrick Joseph	Co-chief Operating Officer	Option Exercise (Sell)	1,160	$269.42	$312.53K
2026-02-18	Howley W Nicholas	Director	Option Exercise (Sell)	10,168	$50.92	$517.75K
2026-02-17	Reiss Joel	Co-chief Operating Officer	Informative Sell	70	$1,305.28	$91.37K
2026-02-06	Lisman Michael	President & CEO	Informative Buy	950	$1,284.26	$1.22M
2026-02-05	Wynne Sarah	Chief Financial Officer	Option Exercise (Sell)	1,494	$559.78	$836.31K
2026-02-02	Murphy Patrick Joseph	Co-chief Operating Officer	Informative Sell	290	$1,430.10	$414.73K
2026-02-02	Stein Kevin M	Director	Option Exercise (Sell)	25,000	$341.28	$8.53M
2026-01-15	Reiss Joel	Co-chief Operating Officer	Informative Sell	40	$1,438.91	$57.56K
2026-01-14	Stein Kevin M	Director	Informative Sell	1,522	$1,407.34	$2.14M
2026-01-08	Stein Kevin M	Director	Informative Sell	340	$1,413.17	$480.48K
2026-01-05	Stein Kevin M	Director	Informative Sell	300	$1,387.04	$416.11K
2026-01-02	Murphy Patrick Joseph	Co-chief Operating Officer	Informative Sell	290	$1,329.03	$385.42K
2025-12-15	Reiss Joel	Co-chief Operating Officer	Informative Sell	30	$1,311.25	$39.34K
2025-12-10	Small Robert J	Director	Option Exercise (Sell)	4,700	$66.47	$312.41K