MarketPeel
Insider Trading Intelligence
BM

Barbara G. Mcclung

CRBU
CHIEF LEGAL OFFICER · CARIBOU BIOSCIENCES, INC. · CIK 0001231321
FILING MIX · LIFETIME64%/36%
BUYS
14
SELLS
8
TOTAL VALUE
$133.9K
COMPANIES
1
ACTIVE SINCE
Oct 2021
HOLDINGS NOW
481,564
AVG SELL PX
$1.75
TRADE KIND
SHOWING 22 / 22
Trades · vs SPY
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Performance · forward returns vs SPY
6 backtested trades · 8 horizons · 4 pending
Forward-return performance of every backtestable P/S trade by Barbara G. Mcclung, 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
7d6+66.67%-3.70%-0.57%-3.13%-10.38%
14d6+66.67%-2.80%-0.26%-2.53%-5.55%
30d6+66.67%-13.53%-0.39%-13.14%-11.36%
60d6+33.33%-28.41%-2.30%-26.11%-24.31%
90d6+33.33%-36.19%-4.05%-37.98%-41.70%
180d6(1 pending)+0.00%-39.21%-4.27%-34.94%-44.43%
1y6(1 pending)+0.00%-34.40%-10.06%-24.35%-35.39%
2y6(2 pending)+0.00%-74.28%-1.55%-72.73%-72.73%
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 · 481,564 shares · as of Feb 24, 2026
0122,126244,251366,377488,50220222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 14 buys / 8 sellsCOVERAGE · 18 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CRBU
CARIBOU BIOSCIENCES, INC.
SALE
Chief Legal Officer
6,938$1.96$13.6K481,564Feb 24, 2026Feb 24, 2026View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
45,000488,502Feb 20, 2026Feb 24, 2026View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
202,500202,500Feb 20, 2026Feb 24, 2026View →
CRBU
CARIBOU BIOSCIENCES, INC.
SALE
Chief Legal Officer
3,564$1.35$4.8K443,502Feb 21, 2025Feb 21, 2025View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
170,000170,000Feb 20, 2025Feb 21, 2025View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
37,500447,066Feb 20, 2025Feb 21, 2025View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
33,000409,566Feb 20, 2024Feb 22, 2024View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
153,000153,000Feb 20, 2024Feb 22, 2024View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
131,000131,000Feb 21, 2023Feb 23, 2023View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASE
Chief Legal Officer
77$2.69$207349,048Sep 15, 2022Sep 16, 2022View →
CRBU
CARIBOU BIOSCIENCES, INC.
SALE
Chief Legal Officer
770Sep 15, 2022Sep 16, 2022View →
CRBU
CARIBOU BIOSCIENCES, INC.
SALE
Chief Legal Officer
27,51847,318Sep 15, 2022Sep 16, 2022View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASE
Chief Legal Officer
27,518$2.69$74.0K376,566Sep 15, 2022Sep 16, 2022View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
147,000147,000Dec 20, 2021Dec 21, 2021View →
CRBU
CARIBOU BIOSCIENCES, INC.
SALE
Chief Legal Officer
6,11574,836Dec 7, 2021Dec 8, 2021View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASE
Chief Legal Officer
12$2.69$32342,856Dec 7, 2021Dec 8, 2021View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASE
Chief Legal Officer
6,115$2.69$16.4K348,971Dec 7, 2021Dec 8, 2021View →
CRBU
CARIBOU BIOSCIENCES, INC.
SALE
Chief Legal Officer
1277Dec 7, 2021Dec 8, 2021View →
CRBU
CARIBOU BIOSCIENCES, INC.
SALE
Chief Legal Officer
4389Oct 20, 2021Oct 21, 2021View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASE
Chief Legal Officer
43$2.69$116342,844Oct 20, 2021Oct 21, 2021View →
CRBU
CARIBOU BIOSCIENCES, INC.
SALE
Chief Legal Officer
9,17680,951Oct 20, 2021Oct 21, 2021View →
CRBU
CARIBOU BIOSCIENCES, INC.
PURCHASE
Chief Legal Officer
9,176$2.69$24.7K342,801Oct 20, 2021Oct 21, 2021View →
Other insiders · CRBU
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About this filer
CIK 0001231321
ROLE
Chief Legal Officer
PRIMARY
CRBU
COMPANIES
1
ACTIVE SINCE
Oct 2021
MARKETPEEL · /INSIDER/0001231321DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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