TransDigm Group INC — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Reiss Joel | Co-Chief Operating Officer | Sale | 336 | $1,287.69 | $432,664 | 6,102 | Dec 15, 2025 |
| SMALL ROBERT J | — | Sale | 580 | $1,289.32 | $747,806 | 9,745 | Dec 10, 2025 |
| SMALL ROBERT J | — | Sale | 15,280 | $1,335.72 | $20,409,802 | 68,139 | Dec 9, 2025 |
| Stein Kevin M | — | Sale | 6,910 | $1,360.15 | $9,398,637 | 18,774 | Dec 4, 2025 |
| Murphy Patrick Joseph | Co-Chief Operating Officer | Option Exercise | 290 | $269.42 | $78,132 | 1,345 | Dec 1, 2025 |
| Stein Kevin M | — | Option Exercise | 4,592 | $105.88 | $486,201 | 12,750 | Nov 28, 2025 |
| Stein Kevin M | — | Option Exercise | 30 | $105.88 | $3,176 | 8,188 | Nov 25, 2025 |
| Graff Michael | — | Gift | 340 | — | — | 1,653 | Nov 21, 2025 |
| Stein Kevin M | — | Option Exercise | 230 | $105.88 | $24,352 | 8,388 | Nov 21, 2025 |
| Stein Kevin M | — | Sale | 655 | $1,360.33 | $891,016 | 8,607 | Nov 20, 2025 |
| Stein Kevin M | — | Sale | 1,531 | $1,362.64 | $2,086,202 | 9,390 | Nov 18, 2025 |
| Reiss Joel | Co-Chief Operating Officer | Option Exercise | 3,900 | $284.97 | $1,111,383 | 7,500 | Nov 17, 2025 |
| Howley W Nicholas | — | Sale | 10 | $1,327.88 | $13,279 | 24,274 | Nov 17, 2025 |
| Lisman Michael | President & CEO | Purchase | 384 | $1,342.93 | $515,685 | 1,850 | Nov 14, 2025 |
| Murphy Patrick Joseph | Co-Chief Operating Officer | Sale | 290 | $1,310.00 | $379,900 | 1,055 | Nov 3, 2025 |
| Stein Kevin M | — | Option Exercise | 700 | $105.88 | $74,116 | 8,858 | Oct 27, 2025 |
| Murphy Patrick Joseph | Co-Chief Operating Officer | Sale | 580 | $1,354.76 | $785,761 | 1,055 | Oct 27, 2025 |
| Reiss Joel | Co-Chief Operating Officer | Sale | 42 | $1,272.58 | $53,448 | 6,558 | Oct 20, 2025 |
| Howley W Nicholas | — | Sale | 200 | $1,308.24 | $261,648 | 21,548 | Oct 15, 2025 |
| Reiss Joel | Co-Chief Operating Officer | Sale | 120 | $1,274.29 | $152,915 | 6,000 | Sep 22, 2025 |
| Santana Michele | — | Award / Grant | 29 | $1,288.13 | $37,356 | 741 | Sep 19, 2025 |
| HENNESSY SEAN P | — | Award / Grant | 36 | $1,288.13 | $46,373 | 33,749 | Sep 19, 2025 |
| Graff Michael | — | Award / Grant | 29 | $1,288.13 | $37,356 | 1,993 | Sep 19, 2025 |
| CRONIN JANE M. | — | Award / Grant | 29 | $1,288.13 | $37,356 | 670 | Sep 19, 2025 |
| BARR DAVID | — | Award / Grant | 36 | $1,288.13 | $46,373 | 32,138 | Sep 19, 2025 |
| SMALL ROBERT J | — | Award / Grant | 44 | $1,288.13 | $56,678 | 15,625 | Sep 19, 2025 |
| Howley W Nicholas | — | Sale | 160 | $1,280.74 | $204,918 | 23,236 | Sep 15, 2025 |
| SMALL ROBERT J | — | Sale | 488 | $1,274.22 | $621,819 | 87,011 | Sep 12, 2025 |
| SMALL ROBERT J | — | Other | 2,318 | — | — | 441,814 | Sep 2, 2025 |
| Graff Michael | — | Sale | 228 | $1,400.03 | $319,207 | 3,324 | Aug 26, 2025 |
| Reiss Joel | Co-Chief Operating Officer | Sale | 487 | $1,399.60 | $681,605 | 6,113 | Aug 20, 2025 |
| Howley W Nicholas | — | Sale | 100 | $1,399.81 | $139,981 | 22,171 | Aug 15, 2025 |
| Reiss Joel | Co-Chief Operating Officer | Sale | 300 | $1,599.00 | $479,700 | 5,239 | Jul 21, 2025 |
| Howley W Nicholas | — | Option Exercise | 2,736 | $140.92 | $385,557 | 24,284 | Jul 15, 2025 |
| Reiss Joel | Co-Chief Operating Officer | Option Exercise | 3,000 | $284.97 | $854,910 | 6,600 | Jun 20, 2025 |
| Howley W Nicholas | — | Sale | 100 | $1,450.00 | $145,000 | 21,548 | Jun 16, 2025 |
| Wynne Sarah | Chief Financial Officer | Option Exercise | 1,800 | $559.78 | $1,007,604 | 5,200 | Jun 13, 2025 |
| Graff Michael | — | Gift | 1,000 | — | — | 7,000 | Jun 12, 2025 |
| Wynne Sarah | Chief Financial Officer | Option Exercise | 3,200 | $559.78 | $1,791,296 | 6,600 | Jun 12, 2025 |
| SMALL ROBERT J | — | Sale | 40,500 | $1,425.01 | $57,712,905 | 444,132 | Jun 10, 2025 |
| Reiss Joel | Co-Chief Operating Officer | Sale | 360 | $1,435.22 | $516,679 | 4,997 | May 20, 2025 |
| HENNESSY SEAN P | — | Option Exercise | 4,700 | $156.47 | $735,409 | 38,413 | May 20, 2025 |
| Howley W Nicholas | — | Sale | 350 | $1,390.72 | $486,752 | 23,934 | May 15, 2025 |
| Graff Michael | — | Gift | 2,000 | — | — | 6,000 | May 14, 2025 |
| Valladares III Jorge L. | — | Sale | 100 | $1,439.52 | $143,952 | 147 | May 13, 2025 |
| Warren Jessica L | GC, CCO, Secretary | Option Exercise | 490 | $643.00 | $315,070 | 1,065 | May 13, 2025 |
| Howley W Nicholas | — | Sale | 157 | $1,477.19 | $231,919 | 30,459 | May 5, 2025 |
| Reiss Joel | Co-Chief Operating Officer | Sale | 571 | $1,326.52 | $757,443 | 4,005 | Apr 21, 2025 |
| Howley W Nicholas | — | Sale | 339 | $1,345.49 | $456,121 | 25,396 | Apr 15, 2025 |
| Stein Kevin M | President & CEO | Sale | 1,054 | $1,327.70 | $1,399,396 | 20,110 | Apr 14, 2025 |