SMALL ROBERT J 4
4 · TransDigm Group INC · Filed Feb 27, 2026
Research Summary
AI-generated summary of this filing
TransDigm (TDG) Director Robert J. Small Buys 1 Share
What Happened
Robert J. Small, a director of TransDigm Group Inc. (TDG), made an open-market purchase of 1 share of TransDigm common stock on February 25, 2026 at $1,285.00 per share, for a total reported purchase value of $1,285. This is a purchase (a buy), but the size is de minimis — a single share.
Key Details
- Transaction date: 2026-02-25; Filing date: 2026-02-27 (filed within two business days; timely).
- Transaction type/code: Open-market purchase (P).
- Price and value: 1 share × $1,285.00 = $1,285.00.
- Shares owned after transaction: Not specified in the provided filing details.
- Notable footnote (F1): The purchase was matchable under Section 16(b) with a sale of 1 share by an entity in which Small has a pecuniary interest at $1,335.72. Small paid the issuer the difference between the sale and purchase prices for that one share (difference = $50.72), consistent with short-swing profit rules.
- Other footnotes (F2–F4): Describe shares held by funds, managed accounts, and family trusts where Small may be deemed to have shared voting/dispositive power but disclaims beneficial ownership except for any pecuniary interest.
Context
- A single-share open-market purchase is immaterial economically and provides limited signal about the insider’s view; purchases are generally more informative than sales, but this trade is tiny.
- Footnote F1 indicates the filing also addresses a matched transaction under Section 16(b) and the required payment to the issuer, not an independent investment decision.
- The filing distinguishes between personal holdings and securities held by entities/ trusts where Small may be associated but disclaims beneficial ownership; such disclosures are common for directors involved with investment vehicles.
Insider Transaction Report
Form 4
SMALL ROBERT J
Director
Transactions
- Purchase
Common Stock
[F1][F2]2026-02-25$1285.00/sh+1$1,285→ 366,142 total(indirect: By Stockbridge Fund, L.P.)
Holdings
- 68,139(indirect: By LLC)
Common Stock
[F3] - 60,246(indirect: By Trust)
Common Stock
[F4] - 5,625
Common Stock
Footnotes (4)
- [F1]The purchase of the Issuer's common stock reported herein was matchable under Section 16(b) of the Securities Exchange Act of 1934, to the extent of one (1) share, with the sale of one (1) share of the Issuer's common stock at a price of $1,335.72 per share by an entity in which the Reporting Person has a pecuniary interest. The Reporting Person has paid to the Issuer an amount representing the difference between the purchase and sale prices of the two transactions with respect to such one share of the Issuer's common stock.
- [F2]Represents shares held by Stockbridge Fund, L.P. ("SF"). Berkshire Partners Holdings LLC ("BPH") is the general partner of BPSP, L.P. ("BPSP"), which is the managing member of SP, the registered investment adviser to SF. Stockbridge Associates LLC ("SA") is the general partner of SF. The Reporting Person is a managing member of each of BPH, BPSP, SP and SA. As such, the Reporting Person may be deemed to share voting and dispositive power with respect to the shares of the Issuer's common stock held by SF. However, the Reporting Person disclaims beneficial ownership of these shares, except to the extent, if any, of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.
- [F3]Represents shares held by Stockbridge Partners LLC ("SP") on behalf of a managed account over which it has shared voting and sole dispositive power. This Form 4 has been filed because the Reporting Person is a director of the Issuer and a managing member of SP. As such, the Reporting Person may be deemed to share voting and dispositive power with respect to the shares of the Issuer's common stock held by SP. However, the Reporting Person disclaims beneficial ownership of these shares, except to the extent, if any, of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.
- [F4]Represents shares of Common Stock beneficially owned by certain family trusts. The Reporting Person's immediate family members are beneficiaries of such family trusts.
Signature
/s/ Robert J. Small|2026-02-27