MarketPeel
Insider Trading Intelligence
TK

Timothy P. Kelly

CRBU
CHIEF TECHNOLOGY OFFICER · CARIBOU BIOSCIENCES, INC. · CIK 0001754067
FILING MIX · LIFETIME71%/29%
BUYS
5
SELLS
2
TOTAL VALUE
$18.2K
COMPANIES
1
ACTIVE SINCE
Jan 2024
HOLDINGS NOW
73,125
AVG SELL PX
$1.94
TRADE KIND
SHOWING 7 / 7
Trades · vs SPY
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Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 6 pending
Forward-return performance of every backtestable P/S trade by Timothy P. Kelly, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d2+100.00%-12.72%-1.09%-11.63%-11.63%
14d2+50.00%-2.06%-1.95%-0.10%-0.10%
30d2+100.00%-9.73%-7.33%-2.40%-2.40%
60d2+50.00%+4.38%+3.52%+0.86%+0.86%
90d2+50.00%-2.48%
180d2(2 pending)
1y2(2 pending)
2y2(2 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
CRBU · 73,125 shares · as of Feb 25, 2026
075,000150,000225,000300,00020252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 5 buys / 2 sellsCOVERAGE · 9 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CRBU
CARIBOU BIOSCIENCES, INC.
SALE
Chief Technology Officer
6,228$1.93$12.0K73,125Feb 25, 2026Feb 27, 2026View →
CRBU
CARIBOU BIOSCIENCES, INC.
SALE
Chief Technology Officer
3,147$1.96$6.2K79,353Feb 24, 2026Feb 24, 2026View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
45,00082,500Feb 20, 2026Feb 24, 2026View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
202,500202,500Feb 20, 2026Feb 24, 2026View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
170,000170,000Feb 20, 2025Feb 21, 2025View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
37,50037,500Feb 20, 2025Feb 21, 2025View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
300,000300,000Jan 8, 2024Jan 9, 2024View →
Other insiders · CRBU
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About this filer
CIK 0001754067
ROLE
Chief Technology Officer
PRIMARY
CRBU
COMPANIES
1
ACTIVE SINCE
Jan 2024
MARKETPEEL · /INSIDER/0001754067DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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