W. Nicholas Howley - Oct 15, 2025 Form 4 Insider Report for TransDigm Group INC (TDG)

Role
Director
Signature
/s/ Rachel L. Quinlan as attorney in fact for W. Nicholas Howley
Stock symbol
TDG
Transactions as of
Oct 15, 2025
Transactions value $
-$3,414,400
Form type
4
Date filed
10/15/2025, 04:40 PM
Previous filing
Sep 16, 2025
Next filing
Nov 6, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Howley W Nicholas Director 1350 EUCLID AVE, SUITE 1600, CLEVELAND /s/ Rachel L. Quinlan as attorney in fact for W. Nicholas Howley 2025-10-15 0001352573

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TDG Common Stock Options Exercise $139K +2.74K +12.7% $50.92 24.3K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99 F1
transaction TDG Common Stock Sale -$395K -306 -1.26% $1,291.89 24K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99 F2
transaction TDG Common Stock Sale -$550K -425 -1.77% $1,294.88 23.6K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99 F3
transaction TDG Common Stock Sale -$342K -264 -1.12% $1,295.69 23.3K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99 F4
transaction TDG Common Stock Sale -$787K -607 -2.61% $1,296.77 22.7K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99 F5
transaction TDG Common Stock Sale -$130K -100 -0.44% $1,297.80 22.6K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99
transaction TDG Common Stock Sale -$133K -102 -0.45% $1,299.11 22.5K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99 F6
transaction TDG Common Stock Sale -$133K -102 -0.45% $1,301.24 22.4K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99 F7
transaction TDG Common Stock Sale -$394K -302 -1.35% $1,304.34 22.1K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99 F8
transaction TDG Common Stock Sale -$324K -248 -1.12% $1,305.66 21.8K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99 F9
transaction TDG Common Stock Sale -$104K -80 -0.37% $1,306.20 21.7K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99 F10
transaction TDG Common Stock Sale -$262K -200 -0.92% $1,308.24 21.5K Oct 15, 2025 W. Nicholas Howley Family Trust u/a/d 4/23/99

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction TDG Stock Option Options Exercise $0 -2.74K -59.26% $0.00 1.88K Oct 15, 2025 Common Stock 2.74K $50.92 W. Nicholas Howley Family Trust u/a/d 4/23/99
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The exercise price has been adjusted for dividends declared since August 1, 2022.
F2 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,291.6700 - $1,292.2300. 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.
F3 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,294.2850 - $1,295.2400. 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.
F4 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,295.3300 - $1,295.9000. 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.
F5 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,296.7100 - $1,297.6100. 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.
F6 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,299.0975 - $1,299.5200. 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.
F7 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,301.2212 - $1,302.0800. 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.
F8 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,303.9900 - $1,304.7600. 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.
F9 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,305.0900 - $1,305.8800. 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.
F10 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,306.0850 - $1,306.3850. 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.