TDG (TransDigm Group Incorporated)
Insider Trading Activity
Every open-market purchase and sale reported by TDG officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-19 | W Nicholas Howley | Director | MIXED | — | — |
| 2026-08-18 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | — |
| 2026-07-21 | Joel Reiss | Co-Chief Operating Officer | M | — | — |
| 2026-07-21 | W Nicholas Howley | Director | MIXED | — | — |
| 2026-07-17 | Joel Reiss | Co-Chief Operating Officer | Sell | — | — |
| 2026-07-17 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | — |
| 2026-06-24 | W Nicholas Howley | Director | J | — | — |
| 2026-06-22 | W Nicholas Howley | Director | MIXED | — | — |
| 2026-06-22 | W Nicholas Howley | Director | MIXED | — | — |
| 2026-06-22 | W Nicholas Howley | Director | MIXED | — | — |
| 2026-06-16 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | — |
| 2026-05-19 | W Nicholas Howley | Director | MIXED | — | — |
| 2026-05-18 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | — |
| 2026-04-21 | W Nicholas Howley | Director | MIXED | — | — |
| 2026-04-16 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | — |
| 2026-03-23 | W Nicholas Howley | Director | A | — | — |
| 2026-03-23 | Michael Graff | Director | A | — | — |
| 2026-03-23 | DAVID BARR | Director | A | — | — |
| 2026-03-23 | Michele Santana | Director | A | — | — |
| 2026-03-23 | GARY E MCCULLOUGH | Director | A | — | — |
| 2026-03-23 | SEAN P HENNESSY | Director | A | — | — |
| 2026-03-23 | JANE M. CRONIN | Director | A | — | — |
| 2026-03-23 | Peter Palmer | Director | A | — | — |
| 2026-03-19 | W Nicholas Howley | Director | MIXED | — | — |
| 2026-03-17 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | — |
| 2026-02-27 | ROBERT J SMALL | Director | Buy | — | — |
| 2026-02-25 | Patrick Joseph Murphy | Co-Chief Operating Officer | M | — | — |
| 2026-02-20 | W Nicholas Howley | Director | MIXED | — | — |
| 2026-02-18 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | — |
| 2026-02-09 | Michael Lisman | President & CEO | Buy | — | — |
| 2026-02-06 | Sarah Wynne | Chief Financial Officer | M | — | — |
| 2026-02-03 | Patrick Joseph Murphy | Co-Chief Operating Officer | MIXED | — | — |
| 2026-02-03 | Kevin M Stein | Director | MIXED | — | — |
| 2026-02-03 | Kevin M Stein | Director | Sell | — | — |
| 2026-01-16 | Kevin M Stein | Director | MIXED | — | — |
| 2026-01-16 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | — |
| 2026-01-09 | Kevin M Stein | Director | MIXED | — | — |
| 2026-01-06 | Kevin M Stein | Director | MIXED | — | — |
| 2026-01-05 | Patrick Joseph Murphy | Co-Chief Operating Officer | MIXED | — | — |
| 2025-12-16 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | — |
| 2025-12-11 | ROBERT J SMALL | Director | MIXED | — | — |
| 2025-12-09 | ROBERT J SMALL | Director | Sell | — | — |
| 2025-12-05 | Kevin M Stein | Director | MIXED | — | — |
| 2025-12-02 | Patrick Joseph Murphy | Co-Chief Operating Officer | MIXED | — | — |
| 2025-12-01 | Kevin M Stein | Director | MIXED | — | — |
| 2025-11-26 | Kevin M Stein | Director | MIXED | — | — |
| 2025-11-25 | Michael Graff | Director | G | — | — |
| 2025-11-24 | Kevin M Stein | Director | MIXED | — | — |
| 2025-11-21 | Kevin M Stein | Director | MIXED | — | — |
| 2025-11-19 | Kevin M Stein | Director | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 14,428,428 | — |
| — | Director | 14,412,309 | — |
| — | 10%+ Owner | 8,683,201 | — |
| — | 10%+ Owner | 7,332,018 | — |
| — | 10%+ Owner | 5,249,436 | — |
| — | 10%+ Owner | 2,632,857 | — |
| — | Director | 184,287 | — |
| — | Director | 73,764 | — |
| — | Director | 43,031 | — |
| — | Executive Vice President | 36,294 | — |
| — | Director | 33,790 | — |
| — | Sr. Exec. VP | 30,100 | — |
| — | Executive Vice President | 30,000 | — |
| — | Director | 27,143 | — |
| — | Director | 18,417 | — |
| — | Director | 17,302 | — |
| — | Exec.V.P. | 14,327 | — |
| — | Director | 8,683 | — |
| — | Exec. V.P., Mergers & Aquis. | 6,582 | — |
| — | Executive Vice President | 6,358 | — |
| — | Director | 6,001 | — |
| — | President & CEO | 5,213 | — |
| — | Chief Financial Officer | 4,904 | — |
| — | Executive Vice President | 4,844 | — |
| — | Treasurer | 4,700 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the TDG quote page; the site-wide leaderboard is on the insider transactions hub.