TransDigm Group INC — Director's Dealing 2010

Dec 8, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TransDigm Group INC (TDG)
CIK: 0001260221
Period of Report: 2010-12-06

Reporting Person: Howley W Nicholas (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-06	Common Stock	M	85000	$6.68	Acquired	85000	Direct
2010-12-06	Common Stock	S	85000	$69.66	Disposed	0	Direct
2010-12-06	Common Stock	M	16000	$6.68	Acquired	16000	Indirect
2010-12-06	Common Stock	S	16000	$69.66	Disposed	0	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-12-06	Stock Option	$6.68	M	85000	Disposed	2013-08-05	Common Stock (85000)	Direct
2010-12-06	Stock Option	$6.68	M	16000	Disposed	2013-08-05	Common Stock (16000)	Indirect

Footnotes

F1: Shares sold in a private transaction