TransDigm Group INC 4

Co-Chief Operating Officer Joel Reiss exercised 3,900 TransDigm Group Inc. stock options and disposed of the resulting 3,900 common shares in a corrected Form 4/A filing.

On July 15, 2026, TransDigm Group Inc. Co-Chief Operating Officer Joel Reiss exercised 3,900 stock options at an exercise price of $284.97 per share and disposed of the resulting 3,900 shares of common stock (coded as a disposition in Table II) with no value retained directly from this transaction, as reflected by a reported price of $0.00 for the disposition. This Form 4/A is an amendment correcting the original Form 4 filed on July 16, 2026, which had mistakenly reported the option-related disposition as an acquisition; no other aspects of the original filing were changed. Using the issuer’s approximate current market price of $1,205.49 per share as context, the underlying common shares involved have an indicative market value of about $4.7 million, and the filer’s remaining holdings are reported as 11,900 shares of common stock, with an estimated post-transaction value of roughly $14.3 million at current prices.

Filing Facts

CIK

1260221

Ticker

TDG

Form

4

Source Type

sec

Accession

0001656109-26-000006

Alert Tier

6