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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 $1,180.82, traded May 18, 2026, filed May 19, 2026.

Warning score
23
Value
$12M
10,132 shares
Holdings after
21,548
-32% from before
From 52-week low
+4%
low $1,132.88, close $1,182.35
From 52-week high
-22%
high $1,516.55, as of May 18, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $12.0M at market
    +25
  • Share of holdings sold
    Sold 32% of holdings
    +10
  • Cluster
    2 insiders selling within 14 days
    +8
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

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.

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 9, 2026 · close 1,108
Since filing May 19, 2026: -6.0%SPY +6.6% · excess -12.6%

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 0001352573-26-000007, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 18, 2026MOption exercise
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
+10,132$66.47$673k31,680May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-40$1,145.16$46k31,640May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-60$1,146.42$69k31,580May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-80$1,150.17$92k31,500May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-80$1,160.00$93k31,420May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-50$1,162.95$58k31,370May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-23$1,163.98$27k31,347May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-110$1,165.51$128k31,237May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-586$1,167.05$684k30,651May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-463$1,168.33$541k30,188May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-390$1,169.24$456k29,798May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-60$1,170.38$70k29,738May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-220$1,172.31$258k29,518May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-685$1,174.17$804k28,833May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-313$1,175.96$368k28,520May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-40$1,176.68$47k28,480May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-140$1,178.14$165k28,340May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-250$1,179.67$295k28,090May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-437$1,180.97$516k27,653May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-290$1,182.81$343k27,363May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-87$1,183.86$103k27,276May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-1,075$1,185.05$1.3M26,201May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-448$1,185.97$531k25,753May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-272$1,187.11$323k25,481May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-3,801$1,188.13$4.5M21,680May 19, 2026
May 18, 2026SOpen-market sale
Common Stockindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-132$1,189.02$157k21,548May 19, 2026
May 18, 2026MOption exercise
Stock Optionderivativeindirect: W. Nicholas Howley Family Trust u/a/d 4/23/9910b5-1
-10,132$0.00$032,096May 19, 2026

Related signals

Other insiders at TransDigm Group INC and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
30Weak
TDGsell10b5-1
TransDigm Group INC
Joel Reiss
Co-Chief Operating Officer
$4.3M
3,900 shares
-52%
23Weak
TDGsell 210b5-1
TransDigm Group INC
W Nicholas Howley
director
$13M
10,132 shares
-32%
38Weak
TDGsell 210b5-1
TransDigm Group INC
Joel Reiss
Co-Chief Operating Officer
$4.8M
3,900 shares
-52%
23Weak
TDGsell 210b5-1
TransDigm Group INC
W Nicholas Howley
director
$12M
10,132 shares
-32%
28Weak
TDGsell 210b5-1
TransDigm Group INC
Joel Reiss
Co-Chief Operating Officer
$4.2M
3,486 shares
-46%
31Weak
TDGsell 210b5-1
TransDigm Group INC
Joel Reiss
Co-Chief Operating Officer
$510k
414 shares
-10%
43Moderate
TDGsell 2
TransDigm Group INC
W Nicholas Howley
director
$13M
10,132 shares
-32%
43Moderate
TDGsell 2
TransDigm Group INC
W Nicholas Howley
director
$13M
10,132 shares
-32%
43Moderate
TDGsell 2
TransDigm Group INC
W Nicholas Howley
director
$13M
10,132 shares
-32%
58Moderate
TDGsell 2
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.

W Nicholas Howley sold $12M of TDG | InsiderTell