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 |
|---|---|---|---|---|---|---|
| Howley W Nicholas | Director | EXERCISE | $500K+ | 5K | $140.92 | Feb 21, 2025 |
| Howley W Nicholas | Director | SELL | $1M+ | 5K | $1315.93 | Feb 21, 2025 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1359.06 | Jan 23, 2025 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Jan 23, 2025 |
| Howley W Nicholas | Director | SELL | $1M+ | 5K | $1296.77 | Jan 15, 2025 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 5K | $140.92 | Jan 15, 2025 |
| Stein Kevin M | President & CEO | EXERCISE | $1M+ | 20K | $195.88 | Jan 15, 2025 |
| Stein Kevin M | President & CEO | SELL | $1M+ | 20K | $1267.21 | Jan 15, 2025 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1257.09 | Dec 20, 2024 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Dec 20, 2024 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Nov 20, 2024 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1253.39 | Nov 20, 2024 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 5K | $140.92 | Nov 19, 2024 |
| Howley W Nicholas | Director | SELL | $1M+ | 5K | $1267.29 | Nov 19, 2024 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Oct 17, 2024 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1401.75 | Oct 17, 2024 |
| Howley W Nicholas | Director | SELL | $1M+ | 5K | $1402.85 | Oct 17, 2024 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 5K | $140.92 | Oct 17, 2024 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1311.67 | Jun 18, 2024 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Jun 18, 2024 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 5K | $215.92 | Jun 18, 2024 |
| Howley W Nicholas | Director | SELL | $1M+ | 5K | $1317.22 | Jun 18, 2024 |
| Stein Kevin M | President & CEO | SELL | $1M+ | 10K | $1308.52 | Jun 14, 2024 |
| Stein Kevin M | President & CEO | EXERCISE | $1M+ | 10K | $270.88 | Jun 14, 2024 |
| SMALL ROBERT J | Director | SELL | $1M+ | 21K | $1315.87 | Jun 13, 2024 |
| SMALL ROBERT J | Director | SELL | $1M+ | 43K | $1320.40 | Jun 12, 2024 |
| Warren Jessica L | GC, CCO, Secretary | SELL | $1M+ | 925 | $1339.34 | Jun 10, 2024 |
| Warren Jessica L | GC, CCO, Secretary | EXERCISE | $500K+ | 1K | $347.42 | Jun 10, 2024 |
| Stein Kevin M | President & CEO | EXERCISE | $1M+ | 10K | $270.88 | Apr 16, 2024 |
| Stein Kevin M | President & CEO | SELL | $1M+ | 10K | $1216.16 | Apr 16, 2024 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1233.10 | Apr 16, 2024 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Apr 16, 2024 |
| SMALL ROBERT J | Director | SELL | $1M+ | 254K | $1160.50 | Mar 1, 2024 |
| Valladares Jorge | Director | SELL | $1M+ | 2K | $1191.99 | Feb 28, 2024 |
| Valladares Jorge | Director | EXERCISE | $500K+ | 2K | $226.34 | Feb 28, 2024 |
| Valladares Jorge | Director | EXERCISE | $1M+ | 14K | $226.34 | Feb 28, 2024 |
| Valladares Jorge | Director | SELL | $1M+ | 14K | $1191.99 | Feb 28, 2024 |
| Lisman Michael | COO | EXERCISE | $1M+ | 16K | $347.17 | Feb 28, 2024 |
| Lisman Michael | COO | SELL | $1M+ | 16K | $1196.76 | Feb 28, 2024 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 59K | $176.24 | Feb 27, 2024 |
| Howley W Nicholas | Director | SELL | $1M+ | 59K | $1173.76 | Feb 27, 2024 |
| Wynne Sarah | CFO | SELL | $1M+ | 6K | $1159.00 | Feb 23, 2024 |
| Wynne Sarah | CFO | EXERCISE | $1M+ | 9K | $322.62 | Feb 23, 2024 |
| Howley W Nicholas | Director | SELL | $1M+ | 9K | $1165.00 | Feb 22, 2024 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 9K | $172.84 | Feb 22, 2024 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 6K | $172.84 | Feb 20, 2024 |
| Howley W Nicholas | Director | SELL | $1M+ | 6K | $1149.81 | Feb 20, 2024 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1140.48 | Feb 20, 2024 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Feb 20, 2024 |
| SMALL ROBERT J | Director | SELL | $1M+ | 4K | $1155.97 | Feb 20, 2024 |
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