X0508 4 2023-09-07 0 0001260221 TransDigm Group INC TDG 0001758252 Wynne Sarah 1301 E. 9TH STREET SUITE 3000 CLEVELAND OH 44114 0 1 0 0 Chief Financial Officer 1 Common Stock 2023-09-07 4 M 0 5420 221.81 A 6120 D Common Stock 2023-09-07 4 S 0 137 878.3732 D 5983 D Common Stock 2023-09-07 4 S 0 270 879.9954 D 5713 D Common Stock 2023-09-07 4 S 0 830 881.2393 D 4883 D Common Stock 2023-09-07 4 S 0 642 882.1066 D 4241 D Common Stock 2023-09-07 4 S 0 483 883.1142 D 3758 D Common Stock 2023-09-07 4 S 0 2296 884.0081 D 1462 D Common Stock 2023-09-07 4 S 0 706 885.5407 D 756 D Common Stock 2023-09-07 4 S 0 56 886.17 D 700 D Stock Option 221.81 2023-09-07 4 M 0 5420 0.00 D 2015-09-30 2025-04-22 Common Stock 5420 0 D Price reported constitutes the average weighted price of shares purchased. Shares were purchased at varying prices in the range of $877.7500 - 878.6000. 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 purchased at each separate price. Price reported constitutes the average weighted price of shares purchased. Shares were purchased at varying prices in the range of $879.4900 - 880.4500. 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 purchased at each separate price. Price reported constitutes the average weighted price of shares purchased. Shares were purchased at varying prices in the range of $880.6300 -881.5950. 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 purchased at each separate price. Price reported constitutes the average weighted price of shares purchased. Shares were purchased at varying prices in the range of $881.6400 - 882.4900 . 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 purchased at each separate price. Price reported constitutes the average weighted price of shares purchased. Shares were purchased at varying prices in the range of $882.6600 - 883.6400. 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 purchased at each separate price. Price reported constitutes the average weighted price of shares purchased. Shares were purchased at varying prices in the range of $883.6750 - 884.1300. 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 purchased at each separate price. Price reported constitutes the average weighted price of shares purchased. Shares were purchased at varying prices in the range of $884.9550 - 885.8000. 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 purchased at each separate price. /s/ Gabrielle Feuer as attorney-in-fact 2023-09-08