Joel Reiss - 20 Oct 2025 Form 4 Insider Report for TransDigm Group INC (TDG)

Role
Co-Chief Operating Officer
Signature
/s/ Rachel L. Quinlan as attorney in fact for Joel Reiss
Issuer symbol
TDG
Transactions as of
20 Oct 2025
Net transactions value
-$2,983,847
Form type
4
Filing time
21 Oct 2025, 16:57:30 UTC
Previous filing
24 Sep 2025
Next filing
06 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Reiss Joel Co-Chief Operating Officer 1350 EUCLID AVE, SUITE 1600, CLEVELAND /s/ Rachel L. Quinlan as attorney in fact for Joel Reiss 21 Oct 2025 0001656109

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TDG Common Stock Options Exercise $854,910 +3,000 +83% $284.97 6,600 20 Oct 2025 Direct
transaction TDG Common Stock Sale $53,448 -42 -0.64% $1272.58 6,558 20 Oct 2025 Direct F1
transaction TDG Common Stock Sale $254,672 -200 -3% $1273.36 6,358 20 Oct 2025 Direct F2
transaction TDG Common Stock Sale $127,500 -100 -1.6% $1275.00 6,258 20 Oct 2025 Direct
transaction TDG Common Stock Sale $393,152 -308 -4.9% $1276.47 5,950 20 Oct 2025 Direct F3
transaction TDG Common Stock Sale $948,290 -742 -12% $1278.02 5,208 20 Oct 2025 Direct F4
transaction TDG Common Stock Sale $670,940 -524 -10% $1280.42 4,684 20 Oct 2025 Direct F5
transaction TDG Common Stock Sale $256,214 -200 -4.3% $1281.07 4,484 20 Oct 2025 Direct
transaction TDG Common Stock Sale $1,083,180 -844 -19% $1283.39 3,640 20 Oct 2025 Direct F6
transaction TDG Common Stock Sale $51,360 -40 -1.1% $1283.99 3,600 20 Oct 2025 Direct F7

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 -3,000 -6% $0.000000 47,000 20 Oct 2025 Common Stock 3,000 $284.97 Direct
* 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 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,272.0400 - $1,272.7400. 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.
F2 Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,273.2800 - $1,274.0600. 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 $1,276.4500 - $1,276.5000. 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 $1,277.5350 - $1,278.4800. 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 $1,280.3100 - $1,281.0100. 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 $1,282.9200 - $1,283.9100. 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 $1,283.9600 - $1,284.0000. 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.