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sellWeak cluster of 310b5-1 plan

Joel Reiss sold $4.2M of TDG

Co-Chief Operating Officer at TransDigm Group INC. 3,000 shares at an average of $1,406.07, traded Aug 20, 2025, filed Aug 20, 2025.

Warning score
35
Value
$4.2M
3,000 shares
Holdings after
3,600
-45% from before
From 52-week low
+14%
low $1,152.50, close $1,311.95
From 52-week high
-13%
high $1,516.55, as of Aug 20, 2025

Score components

  • Role
    COO
    +20
  • Trade size
    $4.2M at market
    +25
  • Share of holdings sold
    Sold 45% of holdings
    +10
  • Cluster
    3 insiders selling within 14 days
    +15
  • 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.

This signal so far: 1m -2.2%, 3m +2.2%, 6m +0.3%.

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 Aug 20, 2025: -15.5%SPY +23.6% · excess -39.1%

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 0001656109-25-000004, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 20, 2025MOption exercise
Common Stock10b5-1
+3,000$284.97$855k6,600Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-487$1,399.60$682k6,113Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-287$1,401.01$402k5,826Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-342$1,403.59$480k5,484Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-343$1,404.50$482k5,141Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-158$1,405.68$222k4,983Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-152$1,406.58$214k4,831Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-22$1,407.09$31k4,809Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-200$1,408.62$282k4,609Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-238$1,410.29$336k4,371Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-571$1,411.41$806k3,800Aug 20, 2025
Aug 20, 2025SOpen-market sale
Common Stock10b5-1
-200$1,413.00$283k3,600Aug 20, 2025
Aug 20, 2025MOption exercise
Stock Optionderivative10b5-1
-3,000$0.00$053,000Aug 20, 2025

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.

Joel Reiss sold $4.2M of TDG | InsiderTell