Reiss Joel 4

What Happened

• Joel Reiss, Chief Operating Officer of TransDigm Group (TDG), exercised/converted derivatives (code M) and acquired a total of 7,800 shares (two entries of 3,900 each). One exercise reported a cash cost of $284.97 per share (3,900 shares; $1,111,383); the other 3,900-share conversion is reported at $0.00.
• On the same date (2026-07-15) he sold 3,486 shares in multiple open-market transactions (code S) at prices ranging roughly from $1,195 to $1,229, producing gross proceeds of $4,239,695. The weighted average sale price was about $1,217 per share.
• Net from these reported entries, Reiss acquired 7,800 shares and sold 3,486 — a net increase of 4,314 shares for him based on this filing. These transactions show option exercise followed by partial sale (common for exercise/tax/liquidity reasons), not a directional endorsement of the stock.

Key Details

• Transaction date: July 15, 2026; Form filed July 17, 2026 (timely).
• Options exercised: 7,800 shares total (two entries of 3,900). Reported cash cost shown: $1,111,383 (for the $284.97 exercise).
• Shares sold: 3,486 shares, gross proceeds $4,239,695, weighted average ~ $1,217/share.
• Footnotes: Multiple footnotes (F1–F28) indicate the sales occurred in many small lots at varying prices within ranges (≈ $1,195.03–$1,229.44); reported prices are weighted averages for groups of trades.
• Shares owned after transaction: not specified in this portion of the filing (this is the first of two Form 4s for these transactions).

Context

• M = option exercise/derivative conversion; S = open-market sale. This pattern (exercise then sell some shares) is commonly used to cover exercise cost or taxes or to diversify — the filing itself does not state motive.
• Because this is the first of two Form 4s for the transaction, additional detail (including full post-transaction holdings) may appear in the subsequent filing.