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sellWeak cluster of 310b5-1 plan

Raymond Woo sold $135k of CBLL

Chief Technology Officer at Ceribell, Inc.. 11,112 shares at an average of $12.11, traded Sep 4, 2025, filed Sep 8, 2025.

Warning score
6
Value
$135k
11,112 shares
Holdings after
167,704
-6% from before
From 52-week low
+11%
low $11.15, close $12.33
From 52-week high
-59%
high $30.24, as of Sep 4, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $135k at market
    +11
  • Share of holdings sold
    Sold 6.2% of holdings
    0
  • Cluster
    3 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 +1.5%, 3m +67.7%, 6m +51.6%.

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 Sep 8, 2025: +95.9%SPY +21.6% · excess +74.4%

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 0000950170-25-113437, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 4, 2025MOption exercise
Common Stock10b5-1
+1,472$2.24$3,297169,176Sep 8, 2025
Sep 4, 2025MOption exercise
Common Stock10b5-1
+3,025$4.70$14k172,201Sep 8, 2025
Sep 4, 2025MOption exercise
Common Stock10b5-1
+6,615$4.70$31k178,816Sep 8, 2025
Sep 4, 2025SOpen-market sale
Common Stock10b5-1
-11,112$12.11$135k167,704Sep 8, 2025
Sep 4, 2025MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-1,472$0.00$020,162Sep 8, 2025
Sep 4, 2025MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-3,025$0.00$056,896Sep 8, 2025
Sep 4, 2025MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-6,615$0.00$071,983Sep 8, 2025

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.

Raymond Woo sold $135k of CBLL | InsiderTell