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sellWeak cluster of 5

Scott Blumberg sold $25k of CBLL

Chief Financial Officer at Ceribell, Inc.. 1,387 shares at an average of $18.00, traded May 21, 2026, filed May 26, 2026.

Warning score
37
Value
$25k
1,387 shares
Holdings after
147,683
-1% from before
From 52-week low
+72%
low $10.92, close $18.74
From 52-week high
-20%
high $23.43, as of May 21, 2026

Score components

  • Role
    CFO
    +22
  • Trade size
    $25k at market
    0
  • Share of holdings sold
    Sold 0.9% of holdings
    0
  • Cluster
    5 insiders selling within 14 days
    +15

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.

CBLLOct 9, 2026 · close 23.63
Since filing May 26, 2026: +25.7%SPY +4.2% · excess +21.5%

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 0001193125-26-239345, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 21, 2026SOpen-market sale
Common Stock
-1,387$18.00$25k147,683May 26, 2026

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
0Weak
CBLLsell10b5-1
Ceribell, Inc.
Raymond Woo
Chief Technology Officer
$119k
4,887 shares
-2%
2Weak
CBLLsell 410b5-1
Ceribell, Inc.
Scott Blumberg
Chief Financial Officer
$21k
846 shares
-1%
38Weak
CBLLsell 410b5-1
Ceribell, Inc.
Xingjuan Chao
President and CEO
$522k
20,846 shares
-3%
5Weak
CBLLsell 410b5-1
Ceribell, Inc.
Raymond Woo
Chief Technology Officer
$119k
4,887 shares
-2%
17Weak
CBLLsell 410b5-1
Ceribell, Inc.
David Foehr
Senior VP, Finance and PAO
$224k
9,255 shares
-26%
2Weak
CBLLsell 510b5-1
Ceribell, Inc.
Scott Blumberg
Chief Financial Officer
$16k
652 shares
-0%
30Weak
CBLLsell 510b5-1
Ceribell, Inc.
Xingjuan Chao
President and CEO
$973k
39,540 shares
-5%
43Moderate
CBLLsell 6
Ceribell, Inc.
Scott Blumberg
Chief Financial Officer
$37k
1,521 shares
-1%
51Moderate
CBLLsell 6
Ceribell, Inc.
Xingjuan Chao
President and CEO
$146k
6,068 shares
-1%
37Weak
CBLLsell 6
Ceribell, Inc.
Raymond Woo
Chief Technology Officer
$48k
1,979 shares
-1%

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.

Scott Blumberg sold $25k of CBLL | InsiderTell