TDG · Insider Trading
TransDigm Group Incorporated
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-16 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | −$3.46M |
| 2026-09-22 | Robert J Small | Director | J | — | — |
| 2026-09-21 | Peter Palmer | Director | A | +34 | +$36.89K |
| 2026-09-21 | Gary E McCullough | Director | A | +41 | +$44.48K |
| 2026-09-21 | Michele Santana | Director | A | +34 | +$36.89K |
| 2026-09-21 | Michael Graff | Director | A | +34 | +$36.89K |
| 2026-09-21 | David Barr | Director | A | +46 | +$49.91K |
| 2026-09-21 | W Nicholas Howley | Director | A | +126 | +$136.71K |
| 2026-09-21 | Robert J Small | Director | A | +52 | +$56.42K |
| 2026-09-21 | Jane M. Cronin | Director | A | +34 | +$36.89K |
| 2026-09-21 | Sean P Hennessy | Director | A | +46 | +$49.91K |
| 2026-09-21 | Irina Igorevna Krasik | Director | A | +13 | +$14.11K |
| 2026-09-16 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | −$3.16M |
| 2026-08-19 | W Nicholas Howley | Director | MIXED | — | −$11.85M |
| 2026-08-18 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | −$3.72M |
| 2026-07-21 | Joel Reiss | Co-Chief Operating Officer | M | −3,900 deriv. | — |
| 2026-07-21 | W Nicholas Howley | Director | MIXED | — | −$11.65M |
| 2026-07-17 | Joel Reiss | Co-Chief Operating Officer | Sell | −414 | −$509.68K |
| 2026-07-17 | Joel Reiss | Co-Chief Operating Officer | MIXED | +414 | −$3.13M |
| 2026-06-24 | W Nicholas Howley | Director | J | — | — |
| 2026-06-22 | W Nicholas Howley | Director | MIXED | — | −$12.70M |
| 2026-06-22 | W Nicholas Howley | Director | MIXED | — | −$12.70M |
| 2026-06-22 | W Nicholas Howley | Director | MIXED | — | −$12.70M |
| 2026-06-16 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | −$3.87M |
| 2026-05-19 | W Nicholas Howley | Director | MIXED | — | −$11.29M |
| 2026-05-18 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | −$3.39M |
| 2026-04-21 | W Nicholas Howley | Director | MIXED | — | −$12.30M |
| 2026-04-16 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | −$3.88M |
| 2026-03-23 | W Nicholas Howley | Director | A | +113 | +$137.26K |
| 2026-03-23 | Michael Graff | Director | A | +30 | +$36.44K |
| 2026-03-23 | David Barr | Director | A | +41 | +$49.80K |
| 2026-03-23 | Michele Santana | Director | A | +30 | +$36.44K |
| 2026-03-23 | Gary E McCullough | Director | A | +37 | +$44.94K |
| 2026-03-23 | Sean P Hennessy | Director | A | +41 | +$49.80K |
| 2026-03-23 | Jane M. Cronin | Director | A | +30 | +$36.44K |
| 2026-03-23 | Peter Palmer | Director | A | +30 | +$36.44K |
| 2026-03-19 | W Nicholas Howley | Director | MIXED | — | −$11.77M |
| 2026-03-17 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | −$3.74M |
| 2026-02-27 | Robert J Small | Director | Buy | +1 | +$1.28K |
| 2026-02-25 | Patrick Joseph Murphy | Co-Chief Operating Officer | M | +1,460 | +$416.68K |
| 2026-02-20 | W Nicholas Howley | Director | MIXED | — | −$12.78M |
| 2026-02-18 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | −$3.93M |
| 2026-02-09 | Michael Lisman | President & CEO | Buy | +950 | +$1.22M |
| 2026-02-06 | Sarah Wynne | Chief Financial Officer | M | +1,494 | +$836.31K |
| 2026-02-03 | Patrick Joseph Murphy | Co-Chief Operating Officer | MIXED | — | −$336.60K |
| 2026-02-03 | Kevin M Stein | Director | MIXED | +11,075 | −$36.24M |
| 2026-02-03 | Kevin M Stein | Director | Sell | −11,075 | −$15.89M |
| 2026-01-16 | Kevin M Stein | Director | MIXED | — | −$8.12M |
| 2026-01-16 | Joel Reiss | Co-Chief Operating Officer | MIXED | — | −$4.47M |
| 2026-01-09 | Kevin M Stein | Director | MIXED | — | −$18.50M |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Robert J Small | Director | 65,923 | $74.87M |
| David Barr | Director | 43,077 | $48.93M |
| Sean P Hennessy | Director | 33,836 | $38.43M |
| W Nicholas Howley | Director | 21,786 | $24.74M |
| Kevin M Stein | Director | 18,417 | $20.92M |
| III Jorge L. Valladares | Director | 17,302 | $19.65M |
| Michael Graff | Director | 8,717 | $9.90M |
| Michael Lisman | President & CEO | 5,213 | $5.92M |
| Sarah Wynne | Chief Financial Officer | 4,904 | $5.57M |
| Peter Palmer | Executive Vice President | 4,064 | $4.62M |
| Joel Reiss | Co-Chief Operating Officer | 3,600 | $4.09M |
| Patrick Joseph Murphy | Co-Chief Operating Officer | 2,515 | $2.86M |
| Gary E McCullough | Director | 993 | $1.13M |
| Michele Santana | Director | 805 | $914.30K |
| Jane M. Cronin | Director | 733 | $833.23K |
| Jessica L Warren | GC, CCO, Secretary | 575 | $653.07K |
| Irina Igorevna Krasik | Director | 13 | $14.77K |
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.
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.