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 |
|---|---|---|---|---|---|---|
| SMALL ROBERT J | Director | EXERCISE | $500K+ | 4K | $126.17 | Feb 20, 2024 |
| Graff Michael | Director | EXERCISE | $500K+ | 3K | $206.73 | Feb 13, 2024 |
| Graff Michael | Director | SELL | $1M+ | 3K | $1108.17 | Feb 13, 2024 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $1022.29 | Jan 18, 2024 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Jan 18, 2024 |
| Howley W Nicholas | Director | SELL | $1M+ | 4K | $1022.27 | Jan 18, 2024 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 4K | $172.84 | Jan 18, 2024 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 24K | $172.84 | Jan 2, 2024 |
| Howley W Nicholas | Director | SELL | $1M+ | 24K | $1015.00 | Jan 2, 2024 |
| HENNESSY SEAN P | Director | EXERCISE | $500K+ | 4K | $172.84 | Nov 27, 2023 |
| HENNESSY SEAN P | Director | SELL | $1M+ | 4K | $971.15 | Nov 27, 2023 |
| SMALL ROBERT J | Director | SELL | $1M+ | 23K | $969.93 | Nov 22, 2023 |
| SMALL ROBERT J | Director | SELL | $1M+ | 106K | $966.23 | Nov 21, 2023 |
| Valladares Jorge | Director | SELL | $1M+ | 16K | $996.32 | Nov 16, 2023 |
| Valladares Jorge | Director | EXERCISE | $1M+ | 16K | $226.34 | Nov 16, 2023 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $994.84 | Nov 16, 2023 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Nov 16, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 7K | $995.01 | Nov 16, 2023 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 7K | $207.84 | Nov 16, 2023 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $862.38 | Oct 17, 2023 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Oct 17, 2023 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $872.68 | Sep 15, 2023 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Sep 15, 2023 |
| SMALL ROBERT J | Director | SELL | $1M+ | 3K | $880.47 | Sep 15, 2023 |
| SMALL ROBERT J | Director | SELL | $1M+ | 21K | $883.65 | Sep 9, 2023 |
| Wynne Sarah | CFO | EXERCISE | $1M+ | 5K | $221.81 | Sep 8, 2023 |
| Wynne Sarah | CFO | SELL | $1M+ | 5K | $883.16 | Sep 8, 2023 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Aug 17, 2023 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $853.76 | Aug 17, 2023 |
| Stein Kevin M | President & CEO | EXERCISE | $1M+ | 12K | $250.92 | Aug 10, 2023 |
| Stein Kevin M | President & CEO | SELL | $1M+ | 12K | $878.41 | Aug 10, 2023 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 40K | $173.29 | Aug 2, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 40K | $900.00 | Aug 2, 2023 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 3K | $173.29 | Aug 1, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 3K | $900.00 | Aug 1, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 6K | $900.00 | Jul 31, 2023 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 6K | $173.29 | Jul 31, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 3K | $890.04 | Jul 18, 2023 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 3K | $173.29 | Jul 18, 2023 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Jul 18, 2023 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $889.75 | Jul 18, 2023 |
| Stein Kevin M | President & CEO | SELL | $1M+ | 12K | $884.27 | Jul 12, 2023 |
| Stein Kevin M | President & CEO | EXERCISE | $1M+ | 12K | $250.92 | Jul 12, 2023 |
| Reiss Joel | COO | SELL | $1M+ | 3K | $812.68 | Jun 17, 2023 |
| Reiss Joel | COO | EXERCISE | $500K+ | 3K | $226.34 | Jun 17, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 3K | $812.77 | Jun 17, 2023 |
| Howley W Nicholas | Director | EXERCISE | $500K+ | 3K | $173.29 | Jun 17, 2023 |
| Stein Kevin M | President & CEO | EXERCISE | $1M+ | 12K | $250.92 | Jun 12, 2023 |
| Stein Kevin M | President & CEO | SELL | $1M+ | 12K | $798.13 | Jun 12, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 3K | $800.76 | May 16, 2023 |
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