🕵️ Transdigm Group Inc ($TDG)
SEC insider & ownership activity, last 12 months · CIK 1260221 · every row links its SEC filing
Over the last 12 months insiders sold $500.6M against $3.8M of open-market buying. The Fortuna Trust U/T/A DTD 06/01/2018 sold $186.5M through a program of 13 sale notices averaging $17.9M (Oct–Feb). 1 planned sale is pending, the largest $47.6M (The Fortuna Trust U/T/A DTD 06/01/2018). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $3.8M (8 lots) · 5 sellers, $500.6M (555 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| The Fortuna Trust U/T/A DTD 06/01/2018 | 0 | – | 87 | $186.5M | Feb 2, 2026 |
| Robert Small | 1 | $1K | 5 | $127.6M | Feb 25, 2026 |
| Howley W. Nicholas | 0 | – | 189 | $122.5M | Aug 18, 2026 |
| Joel Reiss | 0 | – | 269 | $61.7M | Sep 15, 2026 |
| Lisman Michael | 7 | $3.8M | 0 | – | Feb 6, 2026 |
| Patrick J. Murphy | 0 | – | 5 | $2.4M | Feb 2, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Capital International Investors | 9.9% | 13G | May 14, 2026 | filing ↗ | |
| Capital World Investors | 8.3% | 13G | May 14, 2026 | filing ↗ | |
| Vanguard Capital Management | 7.5% | 13G | Apr 30, 2026 | filing ↗ | |
| Capital Research Global Investors | 5.6% | 13G | May 14, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Joel Reiss | $8.9M | Sep 15, 2026 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $47.6M | Aug 7, 2026 | filing ↗ |
| Howley W. Nicholas | $40.1M | Jun 18, 2026 | filing ↗ |
| Joel Reiss | $14.7M | Jun 15, 2026 | filing ↗ |
| Howley W. Nicholas | $53.0M | Feb 18, 2026 | filing ↗ |
| Joel Reiss | $20.1M | Feb 17, 2026 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $68.5M | Feb 2, 2026 | filing ↗ |
| Patrick J. Murphy | $1.7M | Feb 2, 2026 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $10.5M | Jan 14, 2026 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $24.1M | Jan 8, 2026 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $34.0M | Jan 5, 2026 | filing ↗ |
| Patrick J. Murphy | $386K | Jan 2, 2026 | filing ↗ |
| Robert Small | $6.1M | Dec 10, 2025 | filing ↗ |
| Stockbridge Partners LLC | $134.7M | Dec 9, 2025 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $23.4M | Dec 4, 2025 | filing ↗ |
| Patrick J. Murphy | $394K | Dec 1, 2025 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $6.2M | Nov 28, 2025 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $41K | Nov 26, 2025 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $5.6M | Nov 25, 2025 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $305K | Nov 21, 2025 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $1.5M | Nov 20, 2025 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $9.6M | Nov 18, 2025 | filing ↗ |
| Howley W. Nicholas | $3.7M | Nov 17, 2025 | filing ↗ |
| Joel Reiss | $15.7M | Nov 17, 2025 | filing ↗ |
| Patrick J. Murphy | $379K | Nov 3, 2025 | filing ↗ |
| Patrick Joseph Murphy | $788K | Oct 27, 2025 | filing ↗ |
| The Fortuna Trust U/T/A DTD 06/01/2018 | $952K | Oct 27, 2025 | filing ↗ |
| Reiss Joel | $11.5M | Aug 20, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Reg FD disclosure (7.01) | Sep 14, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Sep 14, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Sep 14, 2026 | filing ↗ |
| Earnings (2.02) | Aug 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 4, 2026 | filing ↗ |
| Other events (8.01) | Jul 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 27, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jul 22, 2026 | filing ↗ |
| Other events (8.01) | Jul 10, 2026 | filing ↗ |
| Earnings (2.02) | May 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 5, 2026 | filing ↗ |
| Material agreement (1.01) | Apr 17, 2026 | filing ↗ |
| New financial obligation (2.03) | Apr 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 17, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 14, 2026 | filing ↗ |
| Earnings (2.02) | Apr 14, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 14, 2026 | filing ↗ |
| Other events (8.01) | Apr 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 7, 2026 | filing ↗ |
| Shareholder vote (5.07) | Mar 5, 2026 | filing ↗ |
| Material agreement (1.01) | Feb 13, 2026 | filing ↗ |
| New financial obligation (2.03) | Feb 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 13, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 10, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 9, 2026 | filing ↗ |
| Earnings (2.02) | Feb 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 3, 2026 | filing ↗ |
| Other events (8.01) | Jan 16, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 16, 2026 | filing ↗ |
| Other events (8.01) | Dec 31, 2025 | filing ↗ |