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sellWeak cluster of 510b5-1 plan

Stephen Feider sold $209k of BBNX

Chief Financial Officer at Beta Bionics, Inc.. 9,900 shares at an average of $21.13, traded Sep 8, 2025, filed Sep 9, 2025.

Warning score
19
Value
$209k
9,900 shares
Holdings after
44,041
-18% from before
From 52-week low
+138%
low $9.71, close $23.13
From 52-week high
-3%
high $23.81, as of Sep 8, 2025

Score components

  • Role
    CFO
    +22
  • Trade size
    $209k at market
    +12
  • Share of holdings sold
    Sold 18% of holdings
    +5
  • Cluster
    5 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 -11.1%, 3m +16.0%, 6m -56.1%.

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.

BBNXOct 12, 2026 · close 17.86
Since filing Sep 9, 2025: -28.6%SPY +21.3% · excess -49.8%

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 0001415889-25-023969, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 8, 2025MOption exercise
Common Stock10b5-1
+9,900$5.10$50k53,941Sep 9, 2025
Sep 8, 2025SOpen-market sale
Common Stock10b5-1
-9,900$21.13$209k44,041Sep 9, 2025
Sep 8, 2025MOption exercise
Employee Stock Option (right to buy)derivative10b5-1
-9,900$0.00$089,695Sep 9, 2025

Related signals

Other insiders at Beta Bionics, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
3Weak
BBNXsell 210b5-1
Beta Bionics, Inc.
Mark Hopman
Chief Commercial Officer
$7,015
370 shares
-1%
26Weak
BBNXsell 310b5-1
Beta Bionics, Inc.
Christy Jones
director
$148k
6,430 shares
-25%
40Moderate
BBNXsell 610b5-1
Beta Bionics, Inc.
Mark Hopman
Chief Commercial Officer
$665k
35,994 shares
-29%
40Moderate
BBNXsell 610b5-1
Beta Bionics, Inc.
Mark Hopman
Chief Commercial Officer
$620k
30,779 shares
-35%
17Weak
BBNXsell 610b5-1
Beta Bionics, Inc.
Mike Mensinger
Chief Product Officer
$58k
2,650 shares
-1%
10Weak
BBNXsell 610b5-1
Beta Bionics, Inc.
Mark Hopman
Chief Commercial Officer
$12k
775 shares
-1%
41Moderate
BBNXsell 610b5-1
Beta Bionics, Inc.
Mark Hopman
Chief Commercial Officer
$681k
36,870 shares
-30%
30Weak
BBNXsell 510b5-1
Beta Bionics, Inc.
Sean Saint
President & CEO
$113k
5,641 shares
-1%
40Moderate
BBNXsell 5
Beta Bionics, Inc.
Mark Hopman
Chief Commercial Officer
$102k
5,327 shares
-4%
39Weak
BBNXsell 5
Beta Bionics, Inc.
Mike Mensinger
Chief Product Officer
$84k
4,375 shares
-2%

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.

Stephen Feider sold $209k of BBNX | InsiderTell