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sellModerate cluster of 6

Carsten Brunn sold $290k of RNAC

President and CEO at Cartesian Therapeutics, Inc.. 17,271 shares at an average of $16.78, traded Jan 3, 2025, filed Jan 7, 2025.

Warning score
54
Value
$290k
17,271 shares
Holdings after
204,096
-8% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    CEO
    +25
  • Trade size
    $290k at market
    +14
  • Share of holdings sold
    Sold 7.8% of holdings
    0
  • Cluster
    6 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.

RNACOct 9, 2026 · close 7.05
Since filing Jan 7, 2025: -58.9%SPY +34.9% · excess -93.8%

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 0001453687-25-000036, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jan 3, 2025SOpen-market sale
Common Stock
-8,563$16.72$143k212,804Jan 7, 2025
Jan 6, 2025SOpen-market sale
Common Stock
-8,708$16.83$147k204,096Jan 7, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
45Moderate
RNACbuy
Cartesian Therapeutics, Inc.
Timothy A Springer
director, owner
$1.4M
89,863 shares
+1%
30Weak
RNACbuy
Cartesian Therapeutics, Inc.
Timothy A Springer
director, owner
$366k
20,967 shares
+0%
48Moderate
RNACsell 6
Cartesian Therapeutics, Inc.
Blaine Davis
Chief Financial Officer
$134k
7,989 shares
-8%
40Moderate
RNACsell 6
Cartesian Therapeutics, Inc.
Emily English
Chief Operations Officer
$30k
1,797 shares
-4%
36Weak
RNACsell 6
Cartesian Therapeutics, Inc.
Christopher M Jewell
Chief Scientific Officer
$43k
2,550 shares
-5%
35Weak
RNACsell 6
Cartesian Therapeutics, Inc.
Milos Miljkovic
Chief Medical Officer
$32k
1,880 shares
-5%
39Weak
RNACsell 6
Cartesian Therapeutics, Inc.
Metin Kurtoglu
Chief Technology Officer
$82k
4,875 shares
-7%
40Moderate
RNACbuy
Cartesian Therapeutics, Inc.
Timothy A Springer
director, owner
$965k
52,189 shares
+1%
20Weak
RNACsell
Cartesian Therapeutics, Inc.
Metin Kurtoglu
Chief Technology Officer
$345k
13,664 shares
-22%
55Moderate
RNACsell 3
Cartesian Therapeutics, Inc.
Metin Kurtoglu
Chief Technology Officer
$649k
38,689 shares
-76%

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.

Carsten Brunn sold $290k of RNAC | InsiderTell