Transfer Agent & Registrar

Computershare

P.O. Box 43078
Providence, RI 02940

800.622.6757
www.computershare.com/investor

Shareholder Inquiries

Information related to share certificates should be directed to the transfer agent. For other inquiries, contact:

Investor Relations

TransDigm Group Incorporated

The Tower at Erieview
1301 East 9th St.
Suite 3000
Cleveland, OH 44114

216.706.2945
ir@transdigm.com

Independent Auditors

Ernst & Young LLP

950 Main Avenue
Suite 1800
Cleveland, OH 44115

216.861.5000
www.EY.com