X0306 4 2022-10-17 0 0001260221 TransDigm Group INC TDG 0001352573 Howley W Nicholas 1301 EAST NINTH STREET SUITE 3000 CLEVELAND OH 44114 1 0 0 0 Common Stock 2022-10-17 4 M 0 11500 111.59 A 33047.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-10-17 4 S 0 426 524.6629 D 32621.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-10-17 4 S 0 2152 525.5209 D 30469.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-10-17 4 S 0 1478 526.6006 D 28991.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-10-17 4 S 0 1707 527.3867 D 27284.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-10-17 4 S 0 950 528.699 D 26334.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-10-17 4 S 0 2879 529.5319 D 23455.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-10-17 4 S 0 1123 530.6527 D 22332.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-10-17 4 S 0 724 531.2908 D 21608.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-10-17 4 S 0 61 532.70 D 21547.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Stock Option 111.59 2022-10-17 4 M 0 11500 0.00 D 2016-09-30 2022-11-19 Common Stock 11500 0 I W. Nicholas Howley Family Trust u/a/d 4/23/99 The exercise price has been adjusted for dividends declared since August 1, 2022. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $524.01 - $524.98. 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. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $525.01 - $526.00. 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. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $526.01 - $527.00. 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. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $527.01 - $527.98. 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. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $528.05 - $529.04. 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. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $529.05 - $530.04. 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. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $530.06 - $531.04. 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. Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $531.07 - $531.76. 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. All transactions reported hereunder were made pursuant to an established 10B5-1 plan. Halle Martin as attorney in fact for W. Nicholas Howley. 2022-10-19