X0508 4 2026-01-15 0001260221 TransDigm Group INC TDG 0001656109 Reiss Joel 1350 EUCLID AVE SUITE 1600 CLEVELAND OH 44115 false true false false Co-Chief Operating Officer true Common Stock 2026-01-15 4 M false 3900 284.97 A 7500 D Common Stock 2026-01-15 4 S false 44 1420.375 D 7456 D Common Stock 2026-01-15 4 S false 67 1421.8916 D 7389 D Common Stock 2026-01-15 4 S false 95 1422.628 D 7294 D Common Stock 2026-01-15 4 S false 128 1423.8024 D 7166 D Common Stock 2026-01-15 4 S false 90 1425.104 D 7076 D Common Stock 2026-01-15 4 S false 245 1426.3497 D 6831 D Common Stock 2026-01-15 4 S false 396 1427.2718 D 6435 D Common Stock 2026-01-15 4 S false 477 1428.0254 D 5958 D Common Stock 2026-01-15 4 S false 260 1429.1449 D 5698 D Common Stock 2026-01-15 4 S false 372 1430.2077 D 5326 D Common Stock 2026-01-15 4 S false 453 1431.2593 D 4873 D Common Stock 2026-01-15 4 S false 257 1432.3994 D 4616 D Common Stock 2026-01-15 4 S false 486 1433.3583 D 4130 D Common Stock 2026-01-15 4 S false 200 1434.177 D 3930 D Common Stock 2026-01-15 4 S false 205 1435.1371 D 3725 D Common Stock 2026-01-15 4 S false 35 1436.1486 D 3690 D Common Stock 2026-01-15 4 S false 50 1437.5608 D 3640 D Common Stock 2026-01-15 4 S false 40 1438.9075 D 3600 D Stock Option 284.97 2026-01-15 4 M false 3900 0 D 2021-09-30 2027-11-08 Common Stock 3900 35300 D Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,420.0100 - $1,420.9900. 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 $1,421.1300 - $1,422.0800. 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 $1,422.2800 - $1,423.1700. 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 $1,423.4100 - $1,424.4000. 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 $1,424.4600 - $1,425.3400. 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 $1,425.7100 - $1,426.6800. 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 $1,426.7300 - $1,427.7200. 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 $1,427.7400 - $1,428.7200. 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 $1,428.7700 - $1,429.7200. 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 $1,429.8000 - $1,430.7500. 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 $1,430.8000 - $1,431.7800. 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 $1,431.8500 - $1,432.8400. 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 $1,432.8500 - $1,433.7400. 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 $1,433.8500 - $1,434.5100. 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 $1,434.8800 - $1,435.8400. 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 $1,435.9000 - $1,436.3300. 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 $1,436.9500 - $1,437.7600. 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 $1,438.8500 - $1,439.0800. 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. /s/ Rachel L. Quinlan as attorney in fact for Joel Reiss 2026-01-16