CRBU | CARIBOU BIO | Owners

S&P 500$7,520.93
-0.38%
2m
DOW 30$52,231.89
-0.30%
2m
NASDAQ 100$27,740.79
-0.60%
2m
Russell 2000$280.58
-0.68%
2m
Russell 1000$410.85
-0.36%
2m
S&P 400$3,700.81
-0.39%
2m
S&P 600$1,716.22
-0.36%
2m

CARIBOU BIO (CRBU)

NASDAQ

$0.39-$0.02 (-4.73%)

Price as of Nov 11, 2026 7:50 PM EST

$44.3M
Market Cap
-81.68%
1-Year Change
Biotechnology
Industry

Top Holders

Institutional

Mutual Funds

Holder	Ownership %	Shares Held	Change (Shares, %)	Report Date
BLACKROCK, INC.	7.29%	7.8M	+5.7M (+72.58%)	Jun 30, 2026
BLACKROCK INC.	6.48%	6.9M	-57,242 (-0.82%)	Jun 30, 2024
BLACKROCK FUNDING, INC. /DE	6.12%	6.6M	-669,183 (-10.19%)	Dec 31, 2024
PFIZER INC	4.38%	4.7M	0 (0.00%)	Jun 30, 2026
VANGUARD GROUP INC	4.01%	4.3M	+77,272 (+1.80%)	Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC	3.93%	4.2M	+441,340 (+10.49%)	Jun 30, 2026
MACKENZIE FINANCIAL CORP	3.80%	4.1M	+421,023 (+10.34%)	Sep 30, 2026

Holder	Ownership %	Shares Held	Change (Shares, %)	Report Date
VANGUARD INDEX FUNDS	3.85%	4.1M	+472,688 (+11.45%)	Jun 30, 2026
FIDELITY SALEM STREET TRUST	0.94%	1.0M	+884,432 (+87.38%)	Jul 31, 2026
FIDELITY CONCORD STREET TRUST	0.69%	736,708	-62,295 (-8.46%)	Aug 31, 2026
VANGUARD SCOTTSDALE FUNDS	0.58%	620,781	+154,931 (+24.96%)	Aug 31, 2026
SCHWAB STRATEGIC TRUST	0.47%	501,241	-2,927 (-0.58%)	Aug 31, 2026
Dimensional ETF Trust	0.31%	330,269	+8,090 (+2.45%)	Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC	0.26%	280,533	+35,840 (+12.78%)	Jul 31, 2026

Current Ownership Distribution

Institutions927.2M (78.47%)
Mutual Funds249.8M (21.14%)
Insiders4.6M (0.39%)
Other0 (0.00%)

Insider Transactions

0.39% (4.6M)
Current InsiderOwnership (%, shares)
0
Number of InsiderBuying (last 12 months)
$0.00
Amount of InsiderBuying (last 12 months)
3
Number of InsiderSelling (last 12 months)
$1.3M
Amount of InsiderSelling (last 12 months)

Insider Name & Title	Type	Date	Transaction Value	Shares	Share Price	Shares After Transactions
MCCLUNG BARBARA G Chief Legal Officer	Sell	Feb 24, 2026	$13,598.48	6,938	$1.96	481,564
Albertson Tina M. Chief Medical Officer	Sell	Feb 24, 2026	$2,089.36	1,066	$1.96	68,523
Khan Ruhi Ahmad Chief Business Officer	Sell	Feb 24, 2026	$13,598.48	6,938	$1.96	104,998
JOHNSON DAVID LEE	Award	Feb 20, 2026	$0.00	45,000	$0.00	45,000
Richardson-Heron Dara	Award	Feb 20, 2026	$0.00	45,000	$0.00	45,000
GUGGENHIME ANDREW	Award	Feb 20, 2026	$0.00	45,000	$0.00	45,000
Ryali Sriram Chief Financial Officer	Award	Feb 20, 2026	$0.00	247,500	$0.00	247,500
Zheng Ran	Award	Feb 20, 2026	$0.00	45,000	$0.00	45,000
Haurwitz Rachel E. President and CEO	Award	Feb 20, 2026	$0.00	682,500	$0.00	682,500
Albertson Tina M. Chief Medical Officer	Award	Feb 20, 2026	$0.00	247,500	$0.00	247,500
Khan Ruhi Ahmad Chief Business Officer	Award	Feb 20, 2026	$0.00	202,500	$0.00	202,500
Albertson Tina M. Chief Medical Officer	Award	Feb 20, 2026	$0.00	55,000	$0.00	69,589
Braunstein Scott	Award	Feb 20, 2026	$0.00	45,000	$0.00	45,000
Ryali Sriram Chief Financial Officer	Award	Feb 20, 2026	$0.00	55,000	$0.00	72,360
Whiting Nancy	Award	Feb 20, 2026	$0.00	45,000	$0.00	45,000
Khan Ruhi Ahmad Chief Business Officer	Award	Feb 20, 2026	$0.00	45,000	$0.00	111,936
Haurwitz Rachel E. President and CEO	Award	Feb 20, 2026	$0.00	151,700	$0.00	447,150
Sacks Natalie	Award	Feb 20, 2026	$0.00	45,000	$0.00	45,000
MCCLUNG BARBARA G Chief Legal Officer	Award	Feb 20, 2026	$0.00	202,500	$0.00	202,500
MCCLUNG BARBARA G Chief Legal Officer	Award	Feb 20, 2026	$0.00	45,000	$0.00	488,502
Haurwitz Rachel E. President and CEO	Buy	Mar 14, 2025	$20,400.00	20,000	$1.02	3.4M
Ryali Sriram Chief Financial Officer	Buy	Jan 29, 2025	$24,651.20	17,360	$1.42	17,360
Ryali Sriram Chief Financial Officer	Award	Jan 10, 2025	$0.00	300,000	$0.00	300,000
Fischesser Ryan VP of Finance and Controller	Award	Nov 20, 2024	$0.00	25,000	$0.00	118,854