Joel Reiss - 15 Jul 2026 Form 4/A - Amendment Insider Report for TransDigm Group INC (TDG)

Reporting relationship: Co-Chief Operating Officer
Issuer ticker: TDG
Reported as of: 15 Jul 2026
Net transaction value: $0
SEC form: 4/A - Amendment
Accepted by SEC: 21 Jul 2026, 16:48:08 UTC
Original report date: 16 Jul 2026
Prior SEC filing: 16 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Rachel L. Quinlan as attorney in fact for Joel Reiss

Key filing fact

Joel Reiss filed Form 4/A - Amendment for TransDigm Group INC (TDG) on 21 Jul 2026.

Key facts

This page summarizes Joel Reiss's Form 4/A - Amendment filing for TransDigm Group INC (TDG).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 21 Jul 2026, 16:48.

Change

Previous filing in this sequence was filed on 16 Jun 2026.
Current net transaction value: $0.

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/A - Amendment disclosures.

View source filing

Reporting Owners (1)

CIK 0001656109 Primary reporting owner

Reiss Joel

Relationship: Co-Chief Operating Officer
Address: 1350 EUCLID AVE, SUITE 1600, CLEVELAND
Signature: /s/ Rachel L. Quinlan as attorney in fact for Joel Reiss
Signature date: 21 Jul 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

TDG transaction Derivative

Stock Option

Options Exercise

Transaction value
Shares: -3,900
Change %: -25%
Price: $0.000000^*
Shares after: 11,900
Date: 15 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,900
Exercise price: $284.97
Footnotes: F1

^* 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 1 footnote

Footnote F1

This Form 4/A amends the Form 4 originally filed on 07.16.2026 to correct the reporting of the transaction in Table II, which was inadvertently reported as an acquisition ('A') rather than a disposition ('D'). No other changes have been made to the original filing.