Insider trade

Director purchased ~$1.3K of TDG shares in the open market

Traded Feb 25, 2026 · Filed Feb 27, 2026

~$1.3K
Reported value · 1 sh @ $1,285.00: 366K
Holds after · shares reported: -15.3%
stock since the trade · S&P 500 +10.2%, $1,295.12 → $1,097.24 on Oct 1

Why it stands out

A board member of TransDigm Group spent $1.3K of their very own money to buy TransDigm Group shares. 1 other person at TransDigm Group bought some too, in the same month.

Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell

View the official recordSEC Form 4 — Statement of Changes in Beneficial Ownership

All the details

Dates, kept separate

Transaction date: Feb 25, 2026
Reporting period: Not applicable
Filed with the SEC: Feb 27, 2026

DirectorIndirect holding<$25K2 insiders bought in 30d

Context

Classification

open market purchase

Code P — open-market or private purchase

Absolute commitment

~$1,285

Shares × reported transaction price

Size band

<$25K

Rarity

Not enough history to judge

Confirmed open-market purchases by the same insider in the available history

Cluster activity

2 distinct insiders in 30 days

Distinct insiders at the same issuer with confirmed open-market purchases

Timing vs results

22 days after results of Feb 3, 2026, 48 days before results of Apr 14, 2026

Results dates are the company's own 8-K (Item 2.02). Many companies only let insiders trade in a window after results

Price at the time

Closed at $1,295.12 on Feb 25, 2026, 5% above its 52-week low and 20% below its high, after a 7% drop over the previous 30 trading days

52-week range $1,231.75 (Apr 8, 2025) to $1,620.83 (Jul 30, 2025), 16% of the way up, from 251 adjusted closes. 30 trading days earlier: $1,386.12 on Jan 12, 2026. Describes the past only, not a forecast

Planned / mechanical clue

None found in footnotes

Only flagged when a footnote says so; never inferred

After it was reported

After	Stock	S&P 500	Difference
7 days	-2.9%	-1.2%	-1.7%
30 days	-10.9%	-4.5%	-6.3%
90 days	-5.9%	+10.5%	-16.4%
180 days	-11.0%	+11.8%	-22.7%

Past results only. Not a forecast.

Source receipt

Record ID: 0000919574-26-001436
Filed / recorded: Feb 27, 2026, 9:22 PM UTC
Added to OQRO: Oct 2, 2026, 12:28 PM UTC
Parser: form4-xml-v1
Data quality: Verified: identifiers matched exactly
Issuer: TransDigm Group INC
Issuer CIK: 1260221
Ticker: TDG
Reporting person: Robert J Small
Relationship: Director
Security: Common Stock
Table: Non-derivative (Table I)
Transaction date: Feb 25, 2026
Transaction code: P
Shares / units: 1
Price per share: $1,285.00
Acquired / disposed: Acquired (A)
Shares owned after: 366,142
Ownership form: Indirect — By Stockbridge Fund, L.P.
Amendment: No

Footnotes from the filing

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.
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.