TransDigm Group INC (TDG) · 4/A SEC Filing

=== SEC Form 4/A — Statement of Changes in Beneficial Ownership === Document Type: 4/A Period of Report: 2026-07-15 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: TransDigm Group INC (TDG) CIK: 0001260221 --- Reporting Owner --- Name: Reiss Joel CIK: 0001656109 Role: Officer (Co-Chief Operating Officer) --- Derivative Transactions --- [Transaction #1] Security: Stock Option Date: 2026-07-15 | Code: M (Exercise of derivative) Shares: -3,900 | Price: $0.00 Exercisable: N/A | Expires: 2027-11-08 Shares Owned After: 11,900 | Ownership: D (Direct) Footnotes: [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. --- Footnotes (Complete Index) --- 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. --- Signature --- /s/ /s/ Rachel L. Quinlan as attorney in fact for Joel Reiss (2026-07-21)