TransDigm Group
Supplies proprietary aircraft components for long-lived original-equipment and aftermarket programs.
$1,185.97
After-hours close+0.65 (+0.05%)
At close$1,185.32(−0.10%)
Something off on this page? Send us feedback.
Breakdown13F · Form 4
Institutions 295.50%Insiders 0.93%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 55.93M · Float 55.23M · 98.7% free float
Institutions13F, as of Jun 30, 2026
1,176 holders · 165.29M shares · 143 new positions · 586 increased · 372 reduced · 110 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Capital International Investors | 5.06M | 9.05% | −432.0K | Aug 12, 2026 |
| BlackRock, Inc. | 4.87M | 8.71% | +270.3K | Aug 7, 2026 |
| Capital World Investors | 4.27M | 7.64% | −392.4K | Aug 12, 2026 |
| Vanguard Capital Management LLC | 3.65M | 6.53% | −16.2K | Aug 13, 2026 |
| Capital Research Global Investors | 3.12M | 5.58% | −24.0K | Aug 12, 2026 |
| Vanguard Portfolio Management LLC | 2.58M | 4.61% | +7.9K | Aug 13, 2026 |
| State Street Corp | 2.56M | 4.58% | +42.5K | Aug 7, 2026 |
| Principal Financial Group Inc | 1.71M | 3.06% | −304.7K | Aug 4, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Capital International Investors | 9.90% | 5.58M | 13G | May 14, 2026 ↗ |
| Capital World Investors | 8.30% | 4.71M | 13G | May 14, 2026 ↗ |
| Vanguard Capital Management | 7.48% | 4.22M | 13G | Apr 30, 2026 ↗ |
| BlackRock, Inc. | 7.00% | 3.92M | Oct 22, 2024 ↗ | |
| Capital Research Global Investors | 5.60% | 3.15M | 13G | May 14, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Robert J. Small | director | 371.8K | 0.66% | Feb 27, 2026 |
| Sean P. Hennessy | director | 33.8K | 0.06% | Mar 23, 2026 |
| David Barr | director | 32.2K | 0.06% | Mar 23, 2026 |
| W. Nicholas Howley | director | 21.7K | 0.04% | Aug 19, 2026 |
| Kevin M. Stein | director | 21.4K | 0.04% | Feb 3, 2026 |
| III Jorge L. Valladares | director | 11.1K | 0.02% | May 14, 2025 |
| Michael Graff | director | 8.7K | 0.02% | Mar 23, 2026 |
| Sarah Wynne | officer: Chief Financial Officer | 4.9K | 0.01% | Feb 6, 2026 |
| Peter Palmer | director | 4.0K | 0.01% | Mar 23, 2026 |
| Michael Lisman | director, officer: President & CEO | 3.9K | 0.01% | Feb 9, 2026 |
2 ten-percent owners hold 33.73M shares by Form 4, outside the officers-and-directors figure above · 19 people have not refiled in the last 18 months (226.1K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 18, 2026 | W. Nicholas Howleydirector | Sale · 14 lots | 10,132 | $1,236.28 | 21,548 |
| Aug 17, 2026 | Joel Reissofficer: Co-Chief Operating Officer | Sale · 19 lots | 3,900 | $1,238.76 | 3,600 |
| Jul 20, 2026 | W. Nicholas Howleydirector | Sale · 12 lots | 10,132 | $1,216.08 | 21,548 |
| Jul 15, 2026 | Joel Reissofficer: Co-Chief Operating Officer | Sale · 33 lots | 3,900 | $1,217.79 | 3,600 |
| Jun 18, 2026 | W. Nicholas Howleydirector | Sale · 22 lots | 10,132 | $1,319.55 | 21,548 |
| Jun 15, 2026 | Joel Reissofficer: Co-Chief Operating Officer | Sale · 18 lots | 3,900 | $1,276.78 | 3,600 |
| May 18, 2026 | W. Nicholas Howleydirector | Sale · 25 lots | 10,132 | $1,180.82 | 21,548 |
| May 15, 2026 | Joel Reissofficer: Co-Chief Operating Officer | Sale · 27 lots | 3,900 | $1,154.09 | 3,600 |
| Apr 20, 2026 | W. Nicholas Howleydirector | Sale · 11 lots | 10,132 | $1,265.06 | 21,548 |
| Apr 15, 2026 | Joel Reissofficer: Co-Chief Operating Officer | Sale · 17 lots | 3,900 | $1,280.46 | 3,600 |
CongressHouse and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Rep. April Delaney · MD06 | Purchase | $1,001 – $15,000 | Jul 28, 2026 | Aug 4, 2026 ↗ | |
| Sen. Alan Armstrong | Purchase | $1,001 – $15,000 | Joint | Mar 27, 2026 | Jul 21, 2026 ↗ |
| Rep. April Delaney · MD06 | Purchase | $1,001 – $15,000 | May 22, 2026 | Jun 8, 2026 ↗ | |
| Rep. April Delaney · MD06 | Purchase | $1,001 – $15,000 | May 21, 2026 | Jun 8, 2026 ↗ | |
| Rep. April Delaney · MD06 | Purchase | $1,001 – $15,000 | May 13, 2026 | Jun 8, 2026 ↗ |