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+ | 3K | $173.29 | May 16, 2023 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 10K | $173.29 | May 10, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 10K | $775.27 | May 10, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 7K | $753.17 | Apr 19, 2023 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 7K | $173.29 | Apr 19, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 7K | $701.38 | Mar 17, 2023 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 7K | $173.29 | Mar 17, 2023 |
| Wynne Sarah | Chief Accounting O… | EXERCISE | $50K–$100K | 280 | $221.81 | Mar 16, 2023 |
| Wynne Sarah | Chief Accounting O… | SELL | $100K–$500K | 180 | $720.41 | Mar 16, 2023 |
| SMALL ROBERT J | Director | SELL | $1M+ | 4K | $739.22 | Feb 28, 2023 |
| Lisman Michael | CFO | SELL | $1M+ | 12K | $749.81 | Feb 21, 2023 |
| Lisman Michael | CFO | EXERCISE | $1M+ | 12K | $279.98 | Feb 21, 2023 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 7K | $173.29 | Feb 17, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 7K | $754.78 | Feb 17, 2023 |
| Staer John | Director | SELL | $1M+ | 5K | $731.34 | Feb 14, 2023 |
| Staer John | Director | EXERCISE | $1M+ | 5K | $266.47 | Feb 14, 2023 |
| SMALL ROBERT J | Director | SELL | $1M+ | 152K | $736.32 | Feb 14, 2023 |
| SMALL ROBERT J | Director | SELL | $1M+ | 255K | $739.04 | Feb 14, 2023 |
| Stein Kevin M | President & CEO | SELL | $1M+ | 39K | $749.50 | Feb 13, 2023 |
| Stein Kevin M | President & CEO | EXERCISE | $1M+ | 39K | $173.29 | Feb 13, 2023 |
| Valladares Jorge | COO | SELL | $1M+ | 32K | $755.78 | Feb 13, 2023 |
| Valladares Jorge | COO | EXERCISE | $1M+ | 32K | $148.45 | Feb 13, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 10K | $753.91 | Feb 13, 2023 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 10K | $207.84 | Feb 13, 2023 |
| Howley W Nicholas | Director | SELL | $1M+ | 7K | $685.24 | Jan 18, 2023 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 7K | $173.29 | Jan 18, 2023 |
| Valladares Jorge | COO | SELL | $1M+ | 20K | $667.41 | Jan 13, 2023 |
| Valladares Jorge | COO | EXERCISE | $1M+ | 20K | $148.45 | Jan 13, 2023 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 7K | $173.29 | Dec 19, 2022 |
| Howley W Nicholas | Director | SELL | $1M+ | 7K | $620.35 | Dec 19, 2022 |
| Dunn Mervin | Director | SELL | $1M+ | 4K | $612.74 | Nov 18, 2022 |
| Dunn Mervin | Director | EXERCISE | $500K+ | 4K | $161.17 | Nov 18, 2022 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 7K | $173.29 | Nov 17, 2022 |
| Howley W Nicholas | Director | SELL | $1M+ | 7K | $620.35 | Nov 17, 2022 |
| Howley W Nicholas | Director | SELL | $1M+ | 12K | $528.07 | Oct 19, 2022 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 12K | $111.59 | Oct 19, 2022 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 12K | $111.59 | Sep 19, 2022 |
| Howley W Nicholas | Director | SELL | $1M+ | 12K | $592.97 | Sep 19, 2022 |
| Staer John | Director | EXERCISE | $500K+ | 4K | $207.84 | Sep 8, 2022 |
| Staer John | Director | SELL | $1M+ | 4K | $604.27 | Sep 8, 2022 |
| CRONIN JANE M. | Director | BUY | $1K–$15K | 9 | $643.87 | Aug 30, 2022 |
| Wynne Sarah | Chief Accounting O… | EXERCISE | $100K–$500K | 2K | $148.45 | Aug 17, 2022 |
| Wynne Sarah | Chief Accounting O… | SELL | $1M+ | 2K | $670.65 | Aug 17, 2022 |
| HENNESSY SEAN P | Director | SELL | $1M+ | 4K | $678.14 | Aug 16, 2022 |
| HENNESSY SEAN P | Director | EXERCISE | $500K+ | 4K | $179.67 | Aug 16, 2022 |
| Howley W Nicholas | Director | SELL | $1M+ | 12K | $675.31 | Aug 16, 2022 |
| Howley W Nicholas | Director | EXERCISE | $1M+ | 12K | $130.09 | Aug 16, 2022 |
| Stein Kevin M | President & CEO | SELL | $1M+ | 36K | $661.68 | Aug 15, 2022 |
| Stein Kevin M | President & CEO | EXERCISE | $1M+ | 36K | $661.68 | Aug 15, 2022 |
| Howley W Nicholas | Director | SELL | $1M+ | 12K | $540.70 | Jul 18, 2022 |
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