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TransDigm Group Incorporated The Tower at Erieview 1301 East 9th St. Suite 3710 Cleveland, OH 44114 216.706.2960 info@transdigm.com         Investor FAQ 1. When was TransDigm founded? 2. When did TransDigm Group make its initial public offering? 3. What markets does TransDigm participate in? 4. What is TransDigm’s fiscal year? 5. Does TransDigm pay a dividend? 6. Where are TransDigm’s shares traded? 7. What is TransDigm’s ticker symbol? 8. Who is TransDigm’s transfer agent? 9. How can I change my address on my account? 10. How can I obtain TransDigm’s documents such as a 10-K or a 10-Q? 11. Whom can I contact if I need further information as a TransDigm shareholder? 1. When was TransDigm founded?   TransDigm was founded in 1993. It was formerly known as TD Holding Corporation but changed its name to TransDigm Group Incorporated in 2006. TransDigm Group is based in Cleveland, Ohio. 2. When did TransDigm Group make its initial public offering?   TransDigm Group made its initial public offering and began trading on the New York Stock Exchange on March 15, 2006. 3. What markets does TransDigm participate in?   TransDigm supplies aircraft components to the worldwide commercial and military aviation markets. 4. What is TransDigm’s fiscal year?   TransDigm's fiscal year ends September 30. 5. Does TransDigm pay a dividend?   TransDigm does not anticipate declaring or paying regular cash dividends on its common stock in the foreseeable future. 6. Where are TransDigm’s shares traded?   TransDigm common stock is traded on the New York Stock Exchange. 7. What is TransDigm’s ticker symbol?   TransDigm’s ticker symbol is TDG. 8. Who is TransDigm’s transfer agent?   TransDigm’s transfer agent is Computershare. Computershare's corporate Trust Operations can be contacted by phone at 800.622.6757 or you can go to their website at www.computershare.com/investor. 9. How can I change my address on my account?   All requests for address changes must be made in writing. Please notify Computershare, Corporate Trust Operations, P.O. Box 43078, Providence, RI 02940. Be sure to include the exact name as used on the registration of your shares, your social security number, account and previous address. This will help Computershare locate your account accurately. 10. How can I obtain TransDigm’s documents such as a 10-K or a 10-Q?   TransDigm’s documents are accessible on TransDigm’s web site under SEC Filings. If you would like a paper copy of an SEC document, please contact TransDigm’s investor relations department at 216-706-2945 or by email at ir@transdigm.com. 11. Whom can I contact if I need further information as a TransDigm shareholder?   Contact TransDigm’s investor relations department at 216.706.2945 or by email at ir@TransDigm.com.       Corporate Profile Corporate Governance Board and Management Shareholder Information Stock Information News Releases SEC Filings Analysts Event Calendar Presentations E-mail Alerts Investor FAQ Contact Information Financial Reports Fact Sheet       TDG (common) EXCHANGE NYSE (US Dollar) PRICE $61.42 CHANGE (%)  + 0.17 (0.28%) VOLUME 496,544 Data as of 09/03/10 4:03 p.m. ET Minimum 20 minute delay        PROXY STATEMENT for  2010 ANNUAL MEETING  2009 ANNUAL REPORT        NEWS 09.03.10 TransDigm Completes Acquisition of Semco Instruments Inc. Read More