TransDigm Group INC — Director's Dealing 2018

May 14, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TransDigm Group INC (TDG)
CIK: 0001260221
Period of Report: 2018-05-11

Reporting Person: Henderson Robert S (Exec.V.P.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-05-11	Common Stock	M	15000	$82.67	Acquired	40000	Direct
2018-05-11	Common Stock	S	11255	$333.2701	Disposed	28745	Direct
2018-05-11	Common Stock	S	2845	$333.9479	Disposed	25900	Direct
2018-05-11	Common Stock	S	900	$334.8176	Disposed	25000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-05-11	Stock Option	$82.67	M	15000	Disposed	2021-03-04	Common Stock (15000)	Direct

Footnotes

F1: Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $332.65 - $333.64. 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 $333.65 - $334.50. 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.

F3: Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $334.67 - $334.93. 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.