X0306 4 2022-03-15 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 2022-03-15 4 M 0 11500 130.09 A 33047.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 913 624.8822 D 32134.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 1298 625.8039 D 30836.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 761 627.063 D 30075.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 516 627.8096 D 29559.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 416 629.0602 D 29143.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 432 629.9408 D 28711.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 408 630.9611 D 28303.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 334 631.9891 D 27969.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 669 633.3219 D 27300.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 216 634.7174 D 27084.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 1204 635.7148 D 25880.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 1721 636.6443 D 24159.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 1656 637.7078 D 22503.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 452 638.7498 D 22051.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Common Stock 2022-03-15 4 S 0 504 639.8389 D 21547.513 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Stock Option 130.09 2022-03-15 4 M 0 11500 0.00 D 2016-09-30 2022-11-19 Common Stock 11500 80500 I W. Nicholas Howley Family Trust u/a/d 4/23/99 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $624.365 - $625.350. 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 $625.375 - $626.305. 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 $626.50 - $627.45. 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 $627.53 - $628.23. 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 $628.55 - $629.495 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 $629.62 - $630.60 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 $630.63 - $631.25. 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 $631.84 - $632.195. 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 $633.04 - $633.965. 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 $634.22 - $635.205. 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 $635.22 - $636.18. 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 $636.26 - $637.21. 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 $637.27 - $638.22. 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 $638.27 - $639.015. 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 $639.40 - $640.245. 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. 2022-03-15