TransDigm Group INC Insider Trading Activity
Every SEC Form 4 insider transaction reported for TransDigm Group INC (TDG), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are TDG insiders buying or selling?
In the last 12 months, TransDigm Group INC insiders reported 3 open-market purchases ($3.8M) and 43 sales ($497.9M) — net selling of $494.0M. Since January 2018, Trabud has recorded 343 Form 4 filings for TDG: 33 buys ($487.6M) and 310 sells ($3.7B).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $2.6M by Michael Lisman (President & CEO) on Nov 17, 2025. SEC ↗
- The most recent open-market purchase was reported on Feb 27, 2026 (7 months ago).
Key Statistics (January 2018 – Oct 16, 2026)
Total Form 4 filings
343
SEC EDGAR
Insider filers
24
Insider buys (33)
$487.6M
Insider sells (310)
$3.7B
Insider sentiment
Net sellingNet insider flow of $3.2B in net selling since January 2018, and $494.0M in net selling over the last 12 months.
Recent TDG insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Oct 16, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 4.1K | $1128.04 | $4.6M | SEC ↗ |
| Sep 16, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 3.9K | $1094.58 | $4.3M | SEC ↗ |
| Aug 19, 2026 | Nicholas W Howley | Director | Sale | 10.1K | $1236.28 | $12.5M | SEC ↗ |
| Aug 18, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 3.9K | $1238.76 | $4.8M | SEC ↗ |
| Jul 21, 2026 | Nicholas W Howley | Director | Sale | 10.1K | $1216.08 | $12.3M | SEC ↗ |
| Jul 17, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 414 | $1231.11 | $509.7K | SEC ↗ |
| Jul 17, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 3.5K | $1216.21 | $4.2M | SEC ↗ |
| Jun 22, 2026 | Nicholas W Howley | Director | Sale | 10.1K | $1319.55 | $13.4M | SEC ↗ |
| Jun 22, 2026 | Nicholas W Howley | Director | Sale | 10.1K | $1319.55 | $13.4M | SEC ↗ |
| Jun 22, 2026 | Nicholas W Howley | Director | Sale | 10.1K | $1319.55 | $13.4M | SEC ↗ |
| Jun 16, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 3.9K | $1276.78 | $5.0M | SEC ↗ |
| May 19, 2026 | Nicholas W Howley | Director | Sale | 10.1K | $1180.82 | $12.0M | SEC ↗ |
| May 18, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 3.9K | $1154.09 | $4.5M | SEC ↗ |
| Apr 21, 2026 | Nicholas W Howley | Director | Sale | 10.1K | $1265.06 | $12.8M | SEC ↗ |
| Apr 16, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 3.9K | $1280.46 | $5.0M | SEC ↗ |
| Mar 19, 2026 | Nicholas W Howley | Director | Sale | 10.1K | $1213.05 | $12.3M | SEC ↗ |
| Mar 17, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 3.9K | $1243.70 | $4.9M | SEC ↗ |
| Feb 27, 2026 | Robert J Small | Director | Purchase | 1 | $1285.00 | $1.3K | SEC ↗ |
| Feb 20, 2026 | Nicholas W Howley | Director | Sale | 10.2K | $1307.68 | $13.3M | SEC ↗ |
| Feb 18, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 3.9K | $1293.88 | $5.0M | SEC ↗ |
| Feb 9, 2026 | Michael Lisman | President & CEO | Purchase | 950 | $1284.26 | $1.2M | SEC ↗ |
| Feb 3, 2026 | Kevin M Stein | Director | Sale | 11.1K | $1434.49 | $15.9M | SEC ↗ |
| Feb 3, 2026 | Kevin M Stein | Director | Sale | 36.9K | $1425.79 | $52.6M | SEC ↗ |
| Feb 3, 2026 | Patrick Joseph Murphy | Co-Chief Operating Officer | Sale | 290 | $1430.10 | $414.7K | SEC ↗ |
| Jan 16, 2026 | Joel Reiss | Co-Chief Operating Officer | Sale | 3.9K | $1429.92 | $5.6M | SEC ↗ |
Showing the 25 most recent of 343 Form 4 filings for TransDigm Group INC.
Most active TDG insiders
- Nicholas W Howley104 filings
- Joel Reiss42 filings
- Robert J Small41 filings
- Kevin M Stein40 filings
- Jorge L. Valladares III15 filings
Ask anything about TDG insider activity
Use Trabud's AI agent to query TransDigm Group INC's Form 4 history in plain English — "Show me TDG CEO purchases this year" or compare it against any other ticker.
Open the AI agentTDG insider trading FAQ
Are TransDigm Group INC insiders buying or selling?
In the last 12 months, TransDigm Group INC insiders reported 3 open-market purchases ($3.8M) and 43 sales ($497.9M) — net selling of $494.0M. Since January 2018, Trabud has recorded 343 Form 4 filings for TDG: 33 buys ($487.6M) and 310 sells ($3.7B). Over the full record that is net selling of $3.2B.
How many insiders trade TDG stock?
24 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for TransDigm Group INC. The most recent filing was accepted on Oct 16, 2026.
Where does Trabud get TDG insider trading data?
All TDG insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.