TransDigm Group INC — Director's Dealing 2011

Jun 1, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TransDigm Group INC (TDG)
CIK: 0001260221
Period of Report: 2011-06-01

Reporting Person: Graff Michael (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-06-01	Common Stock	M	10000	$6.68	Acquired	29240	Direct
2011-06-01	Common Stock	S	10000	$81.5398	Disposed	19240	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-06-01	Stock Option	$6.68	M	10000	Disposed	2013-07-22	Common Stock (10000)	Direct

Footnotes

F1: Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $81.18 - $81.98. The reporting person hereby undertakes, upon request of the Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.