TransDigm Group INC — Director's Dealing 2011

Oct 26, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TransDigm Group INC (TDG)
CIK: 0001260221
Period of Report: 2011-10-25

Reporting Person: Laubenthal Raymond F (President and COO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-10-25	Common Stock	M	3000	$6.68	Acquired	63069	Direct
2011-10-25	Common Stock	S	2700	$91.94	Disposed	60369	Direct
2011-10-25	Common Stock	S	300	$92.70	Disposed	60069	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-10-25	Stock Option	$6.68	M	3000	Disposed	2013-08-05	Common Stock (3000)	Direct

Footnotes

F1: Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $91.46 - $92.42. 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.

F2: Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $92.54 - $92.90. 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.