According to recent filings covering the 90 days ending January 10, 2026, the three most significant insider holders at TransDigm Group are Director Raymond F Laubenthal (156.59K shares), Director Robert J Small (73.76K shares), Director Sean P Hennessy (33.75K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Raymond F Laubenthal | 156,595 | 29 Mar, 2022 | |
| Robert J Small | 73,764 | 11 Dec, 2025 | |
| Sean P Hennessy | 33,749 | 22 Sep, 2025 | |
| David Barr | 32,138 | 22 Sep, 2025 | |
| W Nicholas Howley | 21,548 | 17 Nov, 2025 | |
| Iii Jorge L. Valladares | 11,085 | 26 Mar, 2025 | |
| Michael Graff | 8,653 | 25 Nov, 2025 | |
| Kevin M Stein | President & Ceo | 8,158 | 10 Aug, 2023 |
| Michael Lisman | Chief Financial Officer | 4,263 | 14 Mar, 2023 |
| Joel Reiss | Co Chief Operating Officer | 3,600 | 16 Dec, 2025 |
| Sarah Wynne | Chief Financial Officer | 3,400 | 13 Jun, 2025 |
| Mervin Dunn | 1,562 | 18 Nov, 2022 | |
| Patrick Joseph Murphy | Co Chief Operating Officer | 1,055 | 05 Jan, 2026 |
| Gary E Mccullough | 915 | 27 Sep, 2022 | |
| Michele Santana | 741 | 22 Sep, 2025 | |
| Jane M. Cronin | 670 | 22 Sep, 2025 | |
| Jessica L Warren | Gc And Cco And Secretary | 575 | 13 May, 2025 |
| John Staer | 117 | 14 Mar, 2023 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 08 Jan, 2026 | Kevin M Stein | Common Stock | D | 5,239 | $1,408.44 | 9,908 | I | S |
| 08 Jan, 2026 | Kevin M Stein | Common Stock | D | 1,278 | $1,406.72 | 17,869 | I | S |
| 08 Jan, 2026 | Kevin M Stein | Common Stock | D | 2,722 | $1,407.46 | 15,147 | I | S |
| 08 Jan, 2026 | Kevin M Stein | Common Stock | D | 480 | $1,409.57 | 9,428 | I | S |
| 08 Jan, 2026 | Kevin M Stein | Common Stock | D | 340 | $1,413.17 | 8,158 | I | S |
| 08 Jan, 2026 | Kevin M Stein | Common Stock | D | 930 | $1,410.65 | 8,498 | I | S |
| 08 Jan, 2026 | Kevin M Stein | Common Stock | D | 6,384 | $1,405.30 | 19,147 | I | S |
| 08 Jan, 2026 | Kevin M Stein | Common Stock | A | 17,373 | $342.31 | 25,531 | I | M |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 903 | $1,381.53 | 10,599 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 385 | $1,380.53 | 11,502 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 160 | $1,364.57 | 32,418 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 560 | $1,361.59 | 32,598 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 274 | $1,384.12 | 8,458 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 2,084 | $1,372.04 | 19,173 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 716 | $1,368.11 | 31,447 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 4,457 | $1,370.12 | 23,034 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 1,338 | $1,375.16 | 16,334 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 403 | $1,377.30 | 14,344 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 1,020 | $1,374.25 | 17,672 | I | S |
| 05 Jan, 2026 | Kevin M Stein | Common Stock | D | 1,777 | $1,371.09 | 21,257 | I | S |