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sellWeak cluster of 210b5-1 plan

Mike Mensinger sold $231k of BBNX

Chief Product Officer at Beta Bionics, Inc.. 7,800 shares at an average of $29.61, traded Jan 2, 2026, filed Jan 5, 2026.

Warning score
16
Value
$231k
7,800 shares
Holdings after
82,952
-9% from before
From 52-week low
+201%
low $9.71, close $29.25
From 52-week high
-9%
high $31.97, as of Jan 2, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $231k at market
    +13
  • Share of holdings sold
    Sold 8.6% of holdings
    0
  • Cluster
    2 insiders selling within 14 days
    +8
  • 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 -52.3%, 3m -66.4%, 6m -43.5%.

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 9, 2026 · close 17.63
Since filing Jan 5, 2026: -40.4%SPY +14.0% · excess -54.4%

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 0002048500-26-000002, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jan 2, 2026SOpen-market sale
Common Stock10b5-1
-7,200$29.56$213k83,552Jan 5, 2026
Jan 2, 2026SOpen-market sale
Common Stock10b5-1
-600$30.20$18k82,952Jan 5, 2026

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.

Mike Mensinger sold $231k of BBNX | InsiderTell