Kevin M. Stein - 02 Feb 2026 Form 4 Insider Report for TransDigm Group INC (TDG)

Reporting relationship: Director
Issuer ticker: TDG
Reported as of: 02 Feb 2026
Net transaction value: -$15,886,980
SEC form: 4
Accepted by SEC: 03 Feb 2026, 16:39:31 UTC
Prior SEC filing: 16 Jan 2026
Next SEC filing: 05 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Rachel Quinlan as attorney in fact for Kevin Stein

Key filing fact

Kevin M. Stein filed Form 4 for TransDigm Group INC (TDG) on 03 Feb 2026.

Key facts

This page summarizes Kevin M. Stein's Form 4 filing for TransDigm Group INC (TDG).
10 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Feb 2026, 16:39.

Change

Previous filing in this sequence was filed on 16 Jan 2026.
Current net transaction value: -$15,886,980.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001431675 Primary reporting owner

Stein Kevin M

Relationship: Director
Address: 1350 EUCLID AVE, SUITE 1600, CLEVELAND
Signature: /s/ Rachel Quinlan as attorney in fact for Kevin Stein
Signature date: 03 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TDG transaction

Common Stock

Sale

Transaction value: $2,034,105
Shares: -1,421
Change %: -7.4%
Price: $1431.46
Shares after: 17,812
Date: 02 Feb 2026
Ownership: Fortuna Trust dated June 1, 2018
Footnotes: F1

TDG transaction

Common Stock

Sale

Transaction value: $1,953,968
Shares: -1,364
Change %: -7.7%
Price: $1432.53
Shares after: 16,448
Date: 02 Feb 2026
Ownership: Fortuna Trust dated June 1, 2018
Footnotes: F2

TDG transaction

Common Stock

Sale

Transaction value: $4,433,685
Shares: -3,093
Change %: -19%
Price: $1433.46
Shares after: 13,355
Date: 02 Feb 2026
Ownership: Fortuna Trust dated June 1, 2018
Footnotes: F3

TDG transaction

Common Stock

Sale

Transaction value: $2,097,430
Shares: -1,462
Change %: -11%
Price: $1434.63
Shares after: 11,893
Date: 02 Feb 2026
Ownership: Fortuna Trust dated June 1, 2018
Footnotes: F4

TDG transaction

Common Stock

Sale

Transaction value: $1,162,858
Shares: -810
Change %: -6.8%
Price: $1435.63
Shares after: 11,083
Date: 02 Feb 2026
Ownership: Fortuna Trust dated June 1, 2018
Footnotes: F5

TDG transaction

Common Stock

Sale

Transaction value: $2,150,330
Shares: -1,497
Change %: -14%
Price: $1436.43
Shares after: 9,586
Date: 02 Feb 2026
Ownership: Fortuna Trust dated June 1, 2018
Footnotes: F6

TDG transaction

Common Stock

Sale

Transaction value: $615,207
Shares: -428
Change %: -4.5%
Price: $1437.40
Shares after: 9,158
Date: 02 Feb 2026
Ownership: Fortuna Trust dated June 1, 2018
Footnotes: F7

TDG transaction

Common Stock

Sale

Transaction value: $388,507
Shares: -270
Change %: -2.9%
Price: $1438.91
Shares after: 8,888
Date: 02 Feb 2026
Ownership: Fortuna Trust dated June 1, 2018
Footnotes: F8

TDG transaction

Common Stock

Sale

Transaction value: $1,036,485
Shares: -720
Change %: -8.1%
Price: $1439.56
Shares after: 8,168
Date: 02 Feb 2026
Ownership: Fortuna Trust dated June 1, 2018
Footnotes: F9

TDG transaction

Common Stock

Sale

Transaction value: $14,405
Shares: -10
Change %: -0.12%
Price: $1440.48
Shares after: 8,158
Date: 02 Feb 2026
Ownership: Fortuna Trust dated June 1, 2018

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 9 footnotes

Footnote F1

Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,431.0500 - $1,431.9900. 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.

Footnote F2

Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,432.1000 - $1,432.9400. 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.

Footnote F3

Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,433.1200 - $1,434.0800. 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.

Footnote F4

Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,434.1400 - $1,435.1200. 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.

Footnote F5

Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,435.1400 - $1,436.1350. 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.

Footnote F6

Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,436.1400 - $1,437.0900. 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.

Footnote F7

Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,437.1800 - $1,438.0400. 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.

Footnote F8

Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,438.1800 - $1,439.1400. 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.

Footnote F9

Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $1,439.2000 - $1,440.1700. 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.

SEC remarks

Due to a 30-line item limitation in Table 1, this is the second of two Form 4s filed by the reporting person for this transaction.