Transdigm Group Incorporated
A designer and supplier of proprietary aerospace components used in aircraft around the world. Its parts span three segments — Power & Control (engines and power systems), Airframe (cabin and non-power structures), and Non-aviation (ground transport, space, and energy). The company has grown by acquiring dozens of specialized aerospace parts businesses since 1993, and much of its revenue comes from replacement parts and repairs for aircraft already in service.
Granted 13.2K · Bought 47.9K · Sold 1.18M
Granted 119 · Sold 5.0K
Granted 65.1K · Sold 65.8K
Granted 13.1K · Bought 0.48 · Sold 12.8K
Granted 404.6K · Sold 406.7K
Granted 455
Granted 656.3K · Sold 606.9K
Granted 5.6K · Sold 5.2K
Granted 10.0K · Sold 10.0K
Granted 10.0K · Sold 10.0K
Granted 28.0K · Bought 3.8K · Sold 29.5K
Granted 4.7K · Sold 4.5K
Granted 23.0K · Sold 18.7K
Granted 30
Granted 118.5K · Sold 118.5K
Granted 3.2K · Sold 1.7K
Granted 2.2K · Sold 1.7K
Granted 219
Granted 422 · Bought 15 · Sold 7
Granted 391 · Bought 308.62
Granted 3.6K · Bought 13 · Sold 3.8K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Small Robert JDirector · 266 transactions | — | 1.08M | 13.2K | 47.9K | 1.18M |
| Laubenthal Raymond FDirector · 9 transactions | -4.9% | 156.6Kas of Mar 2022 | 119 | — | 5.0K |
| Valladares JorgeDirector · 67 transactions | — | 36.9Kas of Sep 2024 | 65.1K | — | 65.8K |
| Hennessy Sean PDirector · 27 transactions | -0.2% | 33.8K | 13.1K | 0.48 | 12.8K |
| Stein Kevin MDirector · 365 transactions | — | 33.2K | 404.6K | — | 406.7K |
| Barr DavidDirector · 10 transactions | +1.4% | 32.2K | 455 | — | — |
| Howley W NicholasDirector · 679 transactions | -57.7% | 29.9K | 656.3K | — | 606.9K |
| Graff MichaelDirector · 33 transactions | — | 22.7K | 5.6K | — | 5.2K |
| Henderson Robert SExec.V.P. · 6 transactions | -32.5% | 11.3Kas of Nov 2021 | 10.0K | — | 10.0K |
| Valladares III Jorge L.Director · 18 transactions | — | 11.1Kas of May 2025 | 10.0K | — | 10.0K |
| Lisman MichaelPresident & CEO, Director · 45 transactions | — | 9.5K | 28.0K | 3.8K | 29.5K |
| Dunn MervinDirector · 7 transactions | +337.7% | 6.0Kas of Nov 2022 | 4.7K | — | 4.5K |
| Wynne SarahChief Financial Officer · 27 transactions | +82.6% | 4.9K | 23.0K | — | 18.7K |
| Palmer PeterDirector · 1 transaction | -71.2% | 4.0K | 30 | — | — |
| Reiss JoelCo-Chief Operating Officer · 523 transactions | -59% | 3.7K | 118.5K | — | 118.5K |
| Murphy Patrick JosephCo-Chief Operating Officer · 12 transactions | — | 2.5K | 3.2K | — | 1.7K |
| Warren Jessica LGC, CCO, Secretary · 12 transactions | — | 1.1Kas of May 2025 | 2.2K | — | 1.7K |
| McCullough Gary EDirector · 4 transactions | +29.9% | 952 | 219 | — | — |
| Santana MicheleDirector · 23 transactions | +18.6% | 771 | 422 | 15 | 7 |
| Cronin Jane M.Director · 12 transactions | — | 699.62 | 391 | 308.62 | — |
| Staer JohnDirector · 6 transactions | 0% | 91as of Feb 2023 | 3.6K | 13 | 3.8K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -2.43M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.