sellWeak cluster of 210b5-1 plan
W Nicholas Howley sold $12M of TDG
director at TransDigm Group INC. 10,132 shares at an average of $1,213.05, traded Mar 18, 2026, filed Mar 19, 2026.
Warning score
23Value
$12M
10,132 shares
Holdings after
21,548
-32% from before
From 52-week low
+4%
low $1,152.50, close $1,199.94
From 52-week high
-21%
high $1,516.55, as of Mar 18, 2026
Score components
- +15RoleDirector
- +25Trade size$12.3M at market
- +10Share of holdings soldSold 32% of holdings
- +8Cluster2 insiders selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m +6.2%, 3m +11.4%, 6m -9.7%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
TDGOct 13, 2026 · close 1,112
Since filing Mar 19, 2026: -6.7%SPY +18.8% · excess -25.5%
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001193125-26-116079, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Mar 18, 2026 | MOption exercise Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | +10,132 | $50.92 | $516k | 31,680 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -202 | $1,205.42 | $243k | 31,478 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -507 | $1,206.05 | $611k | 30,971 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -91 | $1,207.38 | $110k | 30,880 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -324 | $1,208.56 | $392k | 30,556 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -1,246 | $1,209.52 | $1.5M | 29,310 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -1,376 | $1,210.39 | $1.7M | 27,934 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -1,182 | $1,211.46 | $1.4M | 26,752 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -2,025 | $1,212.57 | $2.5M | 24,727 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -1,159 | $1,213.45 | $1.4M | 23,568 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -552 | $1,214.40 | $670k | 23,016 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -125 | $1,215.51 | $152k | 22,891 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -188 | $1,216.63 | $229k | 22,703 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -80 | $1,217.57 | $97k | 22,623 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -49 | $1,218.80 | $60k | 22,574 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -90 | $1,220.61 | $110k | 22,484 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -40 | $1,221.44 | $49k | 22,444 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -29 | $1,222.38 | $35k | 22,415 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -10 | $1,223.80 | $12k | 22,405 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -70 | $1,225.10 | $86k | 22,335 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -38 | $1,226.44 | $47k | 22,297 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -120 | $1,228.44 | $147k | 22,177 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -521 | $1,229.51 | $641k | 21,656 | Mar 19, 2026 |
| Mar 18, 2026 | SOpen-market sale Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -108 | $1,231.34 | $133k | 21,548 | Mar 19, 2026 |
| Mar 18, 2026 | MOption exercise Stock Optionderivativeindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1 | -10,132 | $0.00 | $0 | 7,908 | Mar 19, 2026 |
Related signals
Other insiders at TransDigm Group INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 30Weak | TransDigm Group INC | Joel Reiss Co-Chief Operating Officer | $4.3M 3,900 shares | -52% | |
| 23Weak | TransDigm Group INC | W Nicholas Howley director | $13M 10,132 shares | -32% | |
| 38Weak | TransDigm Group INC | Joel Reiss Co-Chief Operating Officer | $4.8M 3,900 shares | -52% | |
| 23Weak | TransDigm Group INC | W Nicholas Howley director | $12M 10,132 shares | -32% | |
| 28Weak | TransDigm Group INC | Joel Reiss Co-Chief Operating Officer | $4.2M 3,486 shares | -46% | |
| 31Weak | TransDigm Group INC | Joel Reiss Co-Chief Operating Officer | $510k 414 shares | -10% | |
| 43Moderate | TransDigm Group INC | W Nicholas Howley director | $13M 10,132 shares | -32% | |
| 43Moderate | TransDigm Group INC | W Nicholas Howley director | $13M 10,132 shares | -32% | |
| 43Moderate | TransDigm Group INC | W Nicholas Howley director | $13M 10,132 shares | -32% | |
| 58Moderate | TransDigm Group INC | Joel Reiss Co-Chief Operating Officer | $5.0M 3,900 shares | -52% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.