TDG TransDigm Group Incorporated
TransDigm Group Incorporated (TDG) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 0% planned / 100% discretionary
Largest single sale: $4.9M.
Where they traded
Last open-market purchase: February 25, 2026 , by SMALL ROBERT J .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Howley W Nicholas 14 fills | Director | Sell | 10,132 | $1,236.28 | $12.5M | 31,476 −24.4% of holding | |
| Reiss Joel 19 fills | Co-Chief Operating Officer | Sell | 3,900 | $1,238.76 | $4.8M | 7,360 −34.6% of holding | |
| Howley W Nicholas 12 fills | Director | Sell | 10,132 | $1,216.08 | $12.3M | 31,110 −24.6% of holding | |
| Reiss Joel 33 fills | Co-Chief Operating Officer | Sell | 3,900 | $1,217.79 | $4.7M | 7,490 −34.2% of holding | |
| Howley W Nicholas 66 fills | Director | Sell | 30,396 | $1,319.55 | $40.1M | 31,568 −49.1% of holding | |
| Reiss Joel 18 fills | Co-Chief Operating Officer | Sell | 3,900 | $1,276.78 | $5.0M | 7,468 −34.3% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.