TransDigm Group Incorporated (TDG) Insider Trading
Over the last 3 months, TDG insiders made 0 open-market buys and 107 sales, a net sale of -$51.8M (SEC Form 4). Over the last 6 months, 846 institutions increased and 782 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
107
Net (3m)
-$51.8M
Insider trades by month Buys Sells
Apr
May
Jun
Jul
Aug
Context3-month price -5.3%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 140 | $1236.12 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 1,055 | $1232.01 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 204 | $1225.60 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 270 | $1234.69 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 450 | $1233.30 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 3,980 | $1239.17 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 290 | $1229.09 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 520 | $1238.08 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 570 | $1230.02 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 70 | $1227.62 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 830 | $1231.12 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 250 | $1236.89 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 190 | $1241.14 |
| Aug 19, 2026 | Howley W Nicholasdirector | Sell | 1,313 | $1240.42 |
| Aug 19, 2026 | Howley W Nicholasdirector | Option | 10,132 | $66.47 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 20 | $1250.82 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Option | 3,900 | $284.97 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 30 | $1253.08 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 499 | $1237.87 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 60 | $1248.26 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 140 | $1232.82 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 48 | $1247.31 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 138 | $1243.03 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 260 | $1233.87 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 112 | $1242.28 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 671 | $1236.80 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 327 | $1234.93 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 37 | $1245.90 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 340 | $1238.84 |
| Aug 18, 2026 | Reiss Joelofficer: Co-Chief Operating Officer | Sell | 120 | $1240.78 |
Source: TDG SEC Form 4 filings, latest Aug 19, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their TDG positions over the last 6 months (SEC Form 13F).
Increased
846
New positions
264
Reduced
782
Sold out
98
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| CAPITAL INTERNATIONAL INVESTORS | Reduced | 5.5M | May 13, 2026 |
| Capital International Investors | Reduced | 5.1M | Aug 12, 2026 |
| BlackRock, Inc. | Increased | 4.9M | Aug 7, 2026 |
| CAPITAL WORLD INVESTORS | Increased | 4.7M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 4.6M | May 13, 2026 |
| Capital World Investors | Reduced | 4.3M | Aug 12, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 3.7M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 3.7M | Aug 13, 2026 |
| CAPITAL RESEARCH GLOBAL INVESTORS | Increased | 3.1M | May 13, 2026 |
| Capital Research Global Investors | Reduced | 3.1M | Aug 12, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 2.6M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 2.6M | May 8, 2026 |
| STATE STREET CORP | Increased | 2.6M | Aug 7, 2026 |
| STATE STREET CORP | Increased | 2.5M | May 15, 2026 |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 2.0M | May 4, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.