TransDigm Group INC: COO Joel Reiss exercised 4,100 shares

What happened

• Joel Reiss, chief operating officer, exercised options for 4,100 shares at $284.97 on Oct 15, 2026, for $1,168,377, according to the Form 4.
• The filing also reports open-market sales of 4,100 shares on Oct 15, 2026, in multiple lots that together produced $4,624,944 in proceeds.
• The Form 4 includes a derivative disposition line for 4,100 shares at $0.00 (code M) on Oct 15, 2026, as reported in the filing.

Key details

• transaction date: Oct 15, 2026 (Form 4 filed Oct 16, 2026).
• exercise price and amount: 4,100 shares at $284.97, total $1,168,377.
• sales: 22 separate open-market lots totaling 4,100 shares and $4,624,944 in proceeds; average weighted sale-price ranges reported in footnotes.
• reported price ranges in footnotes: sales reported in multiple batches with average weighted price ranges from $1,111.96 to $1,136.24; each footnote states the filer will provide per-price breakdown on request.
• shares owned after the transaction: not reported in the information provided here.
• filing timeliness: Form 4 dated Oct 16, 2026, covering Oct 15, 2026 transactions; the filing does not indicate it was late.

Why it may matter

• exercise and sales on the same date: the filing shows an options exercise for 4,100 shares and contemporaneous sales of 4,100 shares, consistent with a cashless exercise (exercised shares sold the same day).
• the filing does not show why the insider traded or why the company acted.