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sellWeak10b5-1 plan

Daniel Schumacher sold $426k of PRLB

Chief Financial Officer at Proto Labs Inc. 5,000 shares at an average of $85.21, traded Sep 16, 2026, filed Sep 18, 2026.

Warning score
24
Value
$426k
5,000 shares
Holdings after
40,019
-11% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    CFO
    +22
  • Trade size
    $426k at market
    +17
  • Share of holdings sold
    Sold 11% of holdings
    +5
  • Cluster
    No other insider selling within 14 days
    0
  • 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.

PRLBOct 9, 2026 · close 93.84
Since filing Sep 18, 2026: +6.9%SPY +2.2% · excess +4.7%

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 0001628280-26-062704, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 16, 2026SOpen-market sale
Common Stock10b5-1
-100$85.00$8,50044,91924 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-4,900$85.21$418k40,01924 d ago

Related signals

Other insiders at Proto Labs Inc and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
25Weak
PRLBsell10b5-1
Proto Labs Inc
Daniel Schumacher
Chief Financial Officer
$477k
5,000 shares
-12%
31Weak
PRLBbuy 2
Proto Labs Inc
Rainer Gawlick
director
$75k
1,715 shares
+4%
44Moderate
PRLBbuy 2
Proto Labs Inc
Suresh Krishna
President and CEO
$75k
1,725 shares
+11%

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.

Daniel Schumacher sold $426k of PRLB | InsiderTell