TransDigm Group INC
Total Trades
267
Buys
6
Sells
139
Largest Trade
$1M+
Insiders
16
Institutional Funds
974
Inst. Value
$1M+
Activist Filings
16
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Murphy Patrick Joseph | COO | SELL | $500K+ | 580 | $1354.76 | Oct 28, 2025 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $284.97 | Oct 21, 2025 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1279.59 | Oct 21, 2025 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1276.07 | Sep 24, 2025 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $284.97 | Sep 24, 2025 |
| Howley W Nicholas | Director | SELL | $1M+ | 3K | $1282.47 | Sep 16, 2025 |
| Howley W Nicholas | Director | EXERCISE | $100K–$500K | 3K | $50.92 | Sep 16, 2025 |
| SMALL ROBERT J | Director | SELL | $1M+ | 5K | $1276.98 | Sep 16, 2025 |
| Graff Michael | Director | SELL | $1M+ | 2K | $1402.10 | Aug 28, 2025 |
| Graff Michael | Director | EXERCISE | $100K–$500K | 2K | $156.47 | Aug 28, 2025 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $284.97 | Jul 22, 2025 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1597.86 | Jul 22, 2025 |
| Howley W Nicholas | Director | SELL | $1M+ | 3K | $1569.86 | Jul 15, 2025 |
| Howley W Nicholas | Director | EXERCISE | $100K–$500K | 3K | $140.92 | Jul 15, 2025 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1424.27 | Jun 20, 2025 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $284.97 | Jun 20, 2025 |
| Howley W Nicholas | Director | EXERCISE | $100K–$500K | 3K | $140.92 | Jun 18, 2025 |
| Howley W Nicholas | Director | SELL | $1M+ | 3K | $1444.08 | Jun 18, 2025 |
| Wynne Sarah | CFO | SELL | $1M+ | 2K | $1450.00 | Jun 13, 2025 |
| Wynne Sarah | CFO | EXERCISE | $1M+ | 2K | $559.78 | Jun 13, 2025 |
| SMALL ROBERT J | Director | SELL | $1M+ | 46K | $1425.01 | Jun 13, 2025 |
| Wynne Sarah | CFO | SELL | $1M+ | 3K | $1452.15 | Jun 12, 2025 |
| Wynne Sarah | CFO | EXERCISE | $1M+ | 3K | $559.78 | Jun 12, 2025 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $284.97 | May 20, 2025 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1434.35 | May 20, 2025 |
| HENNESSY SEAN P | Director | EXERCISE | $500K+ | 5K | $156.47 | May 20, 2025 |
| HENNESSY SEAN P | Director | SELL | $1M+ | 5K | $1436.52 | May 20, 2025 |
| Howley W Nicholas | Director | SELL | $1M+ | 3K | $1395.63 | May 16, 2025 |
| Howley W Nicholas | Director | EXERCISE | $100K–$500K | 3K | $140.92 | May 16, 2025 |
| Valladares III Jorge L. | Director | EXERCISE | $1M+ | 10K | $284.97 | May 14, 2025 |
| Valladares III Jorge L. | Director | SELL | $1M+ | 10K | $1419.91 | May 14, 2025 |
| Warren Jessica L | GC, CCO, Secretary | EXERCISE | $100K–$500K | 490 | $643.00 | May 13, 2025 |
| Warren Jessica L | GC, CCO, Secretary | SELL | $500K+ | 490 | $1425.00 | May 13, 2025 |
| Howley W Nicholas | Director | SELL | $1M+ | 49K | $1475.85 | May 5, 2025 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 49K | $140.92 | May 5, 2025 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1321.80 | Apr 21, 2025 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Apr 21, 2025 |
| Stein Kevin M | President & CEO | SELL | $1M+ | 20K | $1329.61 | Apr 15, 2025 |
| Stein Kevin M | President & CEO | EXERCISE | $1M+ | 20K | $195.88 | Apr 15, 2025 |
| Howley W Nicholas | Director | SELL | $1M+ | 5K | $1346.30 | Apr 15, 2025 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 5K | $140.92 | Apr 15, 2025 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Mar 21, 2025 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1360.04 | Mar 21, 2025 |
| Howley W Nicholas | Director | SELL | $1M+ | 5K | $1354.60 | Mar 19, 2025 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 5K | $140.92 | Mar 19, 2025 |
| SMALL ROBERT J | Director | SELL | $1M+ | 10K | $1340.54 | Mar 17, 2025 |
| Stein Kevin M | President & CEO | EXERCISE | $1M+ | 20K | $195.88 | Mar 12, 2025 |
| Stein Kevin M | President & CEO | SELL | $1M+ | 20K | $1314.46 | Mar 12, 2025 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1323.02 | Feb 25, 2025 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Feb 25, 2025 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 974 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Capital International Investors | 6.5M | $1M+ | SH |
| Capital World Investors | 4.0M | $1M+ | SH |
| Capital Research Global Investors | 2.5M | $1M+ | SH |
| STATE STREET CORP | 2.5M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.1M | $1M+ | SH |
| ALTAROCK PARTNERS LP | 969K | $1M+ | SH |
| NORGES BANK | 771K | $1M+ | SH |
| EDGEWOOD MANAGEMENT LLC | 581K | $1M+ | SH |
| PRIMECAP MANAGEMENT CO/CA/ | 410K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 397K | $1M+ | SH |
| VANGUARD GROUP INC | 316K | $1M+ | SH |
| Point72 Asset Management, L.P. | 253K | $1M+ | SH |
| Vulcan Value Partners, LLC | 241K | $1M+ | SH |
| Sumitomo Mitsui Trust Group, Inc. | 197K | $1M+ | SH |
| Swiss National Bank | 154K | $1M+ | SH |
| DF DENT & CO INC | 150K | $1M+ | SH |
| National Pension Service | 133K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 126K | $1M+ | SH |
| Mitsubishi UFJ Asset Management Co., Ltd. | 121K | $1M+ | SH |
| UBS Group AG | 121K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Jul 29, 2025
11.9%
6.7M shares
SC 13G/A · Feb 13, 2025
6.8%
3.8M shares
SC 13G/A · Nov 8, 2024
7.0%
3.9M shares
SC 13G/A · Oct 22, 2024
7.0%
3.9M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
10.8%
6.0M shares
Principal Global Investors, LLC
SC 13G/A · Feb 13, 2024
4.1%
2.3M shares
Capital World Investors 95-1411037
SC 13G · Feb 9, 2024
5.6%
3.1M shares
Capital International Investors 95-1411037
SC 13G/A · Feb 9, 2024
12.2%
6.7M shares
SC 13G/A · Jan 25, 2024
8.1%
4.5M shares
Principal Global Investors, LLC
SC 13G/A · Feb 14, 2023
5.5%
3.0M shares
Capital International Investors 95-1411037
SC 13G/A · Feb 13, 2023
12.4%
6.8M shares
SC 13G/A · Jan 30, 2023
8.7%
4.8M shares
SC 13G/A · Jan 25, 2023
8.7%
4.8M shares
The Vanguard Group - 23-1945930
SC 13G/A · Mar 9, 2022
10.1%
5.6M shares
Principal Global Investors, LLC
SC 13G/A · Feb 15, 2022
5.0%
2.8M shares
Capital International Investors 95-1411037
SC 13G/A · Feb 11, 2022
12.2%
6.8M shares