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sellWeak cluster of 410b5-1 plan

Tina M. Albertson sold $2,089 of CRBU

Chief Medical Officer at Caribou Biosciences, Inc.. 1,066 shares at an average of $1.96, traded Feb 24, 2026, filed Feb 24, 2026.

Warning score
10
Value
$2,089
1,066 shares
Holdings after
68,523
-2% from before
From 52-week low
+192%
low $0.73, close $2.14
From 52-week high
-25%
high $2.84, as of Feb 24, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $2k at market
    0
  • Share of holdings sold
    Sold 1.5% of holdings
    0
  • Cluster
    4 insiders selling within 14 days
    +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 -10.7%, 3m +0.9%, 6m -17.8%.

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.

CRBUOct 12, 2026 · close 0.50
Since filing Feb 24, 2026: -76.8%SPY +14.1% · excess -90.8%

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 0001917391-26-000002, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Feb 20, 2026AGrant or award
Common Stock10b5-1
+55,000$0.00$069,589Feb 24, 2026
Feb 24, 2026SOpen-market sale
Common Stock10b5-1
-1,066$1.96$2,08968,523Feb 24, 2026
Feb 20, 2026AGrant or award
Option to purchase Common Stockderivative10b5-1
+247,500$0.00$0247,500Feb 24, 2026

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
30Weak
CRBUsell 4
Caribou Biosciences, Inc.
Timothy P Kelly
Chief Technology Officer
$12k
6,228 shares
-8%
10Weak
CRBUsell 410b5-1
Caribou Biosciences, Inc.
Barbara G McClung
Chief Legal Officer
$14k
6,938 shares
-1%
30Weak
CRBUsell 4
Caribou Biosciences, Inc.
Timothy P Kelly
Chief Technology Officer
$6,168
3,147 shares
-4%
10Weak
CRBUsell 410b5-1
Caribou Biosciences, Inc.
Ruhi Ahmad Khan
Chief Business Officer
$14k
6,938 shares
-6%
20Weak
CRBUbuy
Caribou Biosciences, Inc.
Rachel E. Haurwitz
President and CEO
$20k
20,000 shares
+1%
10Weak
CRBUsell 310b5-1
Caribou Biosciences, Inc.
Barbara G McClung
Chief Legal Officer
$4,811
3,564 shares
-1%
10Weak
CRBUsell 310b5-1
Caribou Biosciences, Inc.
Steven Kanner
Chief Scientific Officer
$4,811
3,564 shares
-1%
10Weak
CRBUsell 310b5-1
Caribou Biosciences, Inc.
Ruhi Ahmad Khan
Chief Business Officer
$4,811
3,564 shares
-5%
30Weak
CRBUbuy
Caribou Biosciences, Inc.
Sriram Ryali
Chief Financial Officer
$25k
17,360 shares
-

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.

Tina M. Albertson sold $2,089 of CRBU | InsiderTell