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sellModerate cluster of 2

Kristen M Oelschlager sold $391k of CSTL

Chief Operating Officer at CASTLE BIOSCIENCES INC. 18,007 shares at an average of $21.69, traded Aug 27, 2025, filed Aug 29, 2025.

Warning score
49
Value
$391k
18,007 shares
Holdings after
153,793
-10% from before
From 52-week low
+52%
low $14.65, close $22.28
From 52-week high
-36%
high $34.67, as of Aug 27, 2025

Score components

  • Role
    COO
    +20
  • Trade size
    $391k at market
    +16
  • Share of holdings sold
    Sold 10% of holdings
    +5
  • Cluster
    2 insiders selling within 14 days
    +8

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 -5.4%, 3m +66.4%, 6m +23.2%.

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.

CSTLOct 9, 2026 · close 34.42
Since filing Aug 29, 2025: +43.4%SPY +22.3% · excess +21.1%

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 0001856565-25-000006, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 27, 2025SOpen-market sale
Common Stock
-18,007$21.69$391k153,793Aug 29, 2025

Related signals

Other insiders at CASTLE BIOSCIENCES INC and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
33Weak
CSTLsell 310b5-1
CASTLE BIOSCIENCES INC
Derek J Maetzold
Pres. & Chief Exec. Officer
$516k
14,496 shares
-49%
16Weak
CSTLsell 310b5-1
CASTLE BIOSCIENCES INC
Kristen M Oelschlager
Chief Operating Officer
$149k
4,153 shares
-24%
28Weak
CSTLsell 310b5-1
CASTLE BIOSCIENCES INC
Tobin W Juvenal
Chief Commercial Officer
$232k
6,577 shares
-11%
33Weak
CSTLsell 310b5-1
CASTLE BIOSCIENCES INC
Derek J Maetzold
Pres. & Chief Exec. Officer
$512k
14,496 shares
-48%
27Weak
CSTLsell 310b5-1
CASTLE BIOSCIENCES INC
Tobin W Juvenal
Chief Commercial Officer
$223k
6,600 shares
-10%
32Weak
CSTLsell 310b5-1
CASTLE BIOSCIENCES INC
Derek J Maetzold
Pres. & Chief Exec. Officer
$465k
14,518 shares
-48%
16Weak
CSTLsell 310b5-1
CASTLE BIOSCIENCES INC
Kristen M Oelschlager
Chief Operating Officer
$139k
4,152 shares
-24%
17Weak
CSTLsell 310b5-1
CASTLE BIOSCIENCES INC
Tobin W Juvenal
Chief Commercial Officer
$57k
1,730 shares
-3%
45Moderate
CSTLsell 410b5-1
CASTLE BIOSCIENCES INC
Derek J Maetzold
Pres. & Chief Exec. Officer
$616k
18,560 shares
-55%
29Weak
CSTLsell 410b5-1
CASTLE BIOSCIENCES INC
Tobin W Juvenal
Chief Commercial Officer
$317k
9,050 shares
-12%

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.

Kristen M Oelschlager sold $391k of CSTL | InsiderTell