TransDigm Group INC — Director's Dealing 2025

Dec 5, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TransDigm Group INC (TDG)
CIK: 0001260221
Period of Report: 2025-12-04

Reporting Person: Stein Kevin M (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-04	Common Stock	M	17526	$105.88	Acquired	25684	Indirect
2025-12-04	Common Stock	S	6910	$1360.1483	Disposed	18774	Indirect
2025-12-04	Common Stock	S	2081	$1361.4284	Disposed	16693	Indirect
2025-12-04	Common Stock	S	1794	$1362.6281	Disposed	14899	Indirect
2025-12-04	Common Stock	S	1397	$1363.3925	Disposed	13502	Indirect
2025-12-04	Common Stock	S	3139	$1364.5755	Disposed	10363	Indirect
2025-12-04	Common Stock	S	1680	$1365.3326	Disposed	8683	Indirect
2025-12-04	Common Stock	S	495	$1366.1918	Disposed	8188	Indirect
2025-12-04	Common Stock	S	30	$1367.2233	Disposed	8158	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-12-04	Stock Option	$105.88	M	17526	Disposed	2028-04-25	Common Stock (17526)	Indirect

Footnotes

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 $1,360.000 - $1,360.9900. 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.

F3: Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,361.0000- $1,361.9450. 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 $1,362.02000- $1,363.0000. 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.

F5: Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,363.0400- $1,364.0200. 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 $1,364.0400- $1,365.0100. 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.

F7: Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,365.0400- $1,366.0300. 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 $1,366.1100- $1,366.5300. 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 $1,367.2200 - $1,367.2300. 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.