Caribou Biosciences (CRBU) insider trading activity: Get Latest News Today

CRBU Stock Outstanding Shares

Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.

ShortableYes

OptionableYes

Short Percent Of Outstanding Shares10.63

Short Percent Of Float11.13

Shares Outstanding93.00M

Shares Float83.94M

Shares Short9.89M

Short Ratio9.66

11.13%

Short % of Float

10.63%

Short % of Shares Outstanding

Market Insider CRBU

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

10.04% Percentage of Shares held by All Insiders

62.14% Percentage of Shares held by All Institutions

69.07% Percentage of Float held by Institutions

179

Number of Institutions Holding Shares

Institutional Ownership

About 62.14% of CRBU shares are held by financial institutions. UBS GROUP AG is the top corporate investor, holding 408.28K shares valued at $2.10M. A 0.46% stake in Caribou Biosciences, Inc. is owned by the company. ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC owns 42.65K shares valued at $219.24K, which translates its holding of 0.05% of the stake in the company.

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Mar 31, 2024	UBS GROUP AG	0.46%	408.28K	2.1M	81.75K	+25.03%
Mar 31, 2024	ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC	0.05%	42.65K	219.24K	3.59K	+9.20%
Mar 31, 2024	VANGUARD GROUP INC	4.65%	4.11M	21.13M	148.75K	+3.75%
Mar 31, 2024	ALKEON CAPITAL MANAGEMENT LLC	3.1%	2.74M	14.1M	-370.06K	-11.89%
Mar 31, 2024	GEODE CAPITAL MANAGEMENT, LLC	2.08%	1.84M	9.47M	47.54K	+2.65%
Mar 31, 2024	CANDRIAM S.C.A.	1.29%	1.15M	5.89M	285.04K	+33.14%
Mar 31, 2024	BANK OF AMERICA CORP /DE/	1.26%	1.12M	5.74M	-476.37K	-29.90%
Mar 31, 2024	KYNAM CAPITAL MANAGEMENT, LP	1.21%	1.07M	5.49M	0	0
Mar 31, 2024	FIL LTD	0.97%	860.67K	4.42M	0	0
Mar 31, 2024	ROKOS CAPITAL MANAGEMENT LLP	0.95%	840.63K	4.3M	0	0
Mar 31, 2024	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.93%	824.66K	4.24M	16.9K	+2.09%
Mar 31, 2024	NORTHERN TRUST CORP	0.83%	734.27K	3.77M	-23.1K	-3.05%
Mar 31, 2024	MAVERICK CAPITAL LTD	0.74%	652.54K	3.35M	0	0
Mar 31, 2024	GOLDMAN SACHS GROUP INC	0.68%	602.9K	3.1M	-57.14K	-8.66%
Mar 31, 2024	JPMORGAN CHASE & CO	0.62%	549.05K	2.82M	-27.93K	-4.84%
Mar 31, 2024	RAFFERTY ASSET MANAGEMENT, LLC	0.61%	541.45K	2.78M	160.25K	+42.04%
Mar 31, 2024	CITADEL ADVISORS LLC	0.6%	526.91K	2.71M	526.91K	+100.00%
Mar 31, 2024	72 INVESTMENT HOLDINGS, LLC	0.54%	474.07K	2.44M	0	0
Mar 31, 2024	MARSHALL WACE, LLP	0.42%	368.26K	1.89M	310.53K	+537.90%
Mar 31, 2024	READYSTATE ASSET MANAGEMENT LP	0.39%	344.5K	1.77M	344.5K	+100.00%
Mar 31, 2024	BANK OF NEW YORK MELLON CORP	0.31%	270.18K	1.39M	-25.06K	-8.49%
Mar 31, 2024	NUVEEN ASSET MANAGEMENT, LLC	0.3%	267.74K	1.38M	0	0
Mar 31, 2024	ROYCE & ASSOCIATES LP	0.29%	258.93K	1.33M	5.83K	+2.30%
Mar 31, 2024	WESTWOOD HOLDINGS GROUP INC	0.28%	251.47K	1.29M	-25.74K	-9.28%
Mar 31, 2024	WOODLINE PARTNERS LP	0.27%	237.28K	1.22M	-903.39K	-79.20%
Mar 31, 2024	MIRAE ASSET GLOBAL INVESTMENTS CO., LTD.	0.26%	230.19K	1.1M	56.59K	+32.59%
Mar 31, 2024	RESONANT CAPITAL ADVISORS, LLC	0.21%	184.2K	946.78K	0	0
Mar 31, 2024	ABRDN PLC	0.21%	181.49K	932.84K	0	0
Mar 31, 2024	SQUAREPOINT OPS LLC	0.19%	169.92K	873.41K	77.26K	+83.37%
Mar 31, 2024	BALYASNY ASSET MANAGEMENT L.P.	0.18%	162.68K	836.19K	162.68K	+100.00%
Mar 31, 2024	EXODUSPOINT CAPITAL MANAGEMENT, LP	0.18%	158.61K	815K	158.61K	+100.00%
Mar 31, 2024	ACADIAN ASSET MANAGEMENT LLC	0.18%	156.24K	802K	11.92K	+8.26%
Mar 31, 2024	ADAGE CAPITAL PARTNERS GP, L.L.C.	0.17%	153.93K	791.22K	-50K	-24.52%
Mar 31, 2024	DEKABANK DEUTSCHE GIROZENTRALE	0.15%	130K	666K	0	0
Mar 31, 2024	ALYESKA INVESTMENT GROUP, L.P.	0.14%	125K	642.5K	0	0
Mar 31, 2024	RHUMBLINE ADVISERS	0.14%	122.52K	629.73K	3.46K	+2.90%
Mar 31, 2024	CITIGROUP INC	0.53%	469.52K	2.41M	307.8K	+190.33%
Mar 31, 2024	WELLINGTON MANAGEMENT GROUP LLP	0.5%	441.81K	2.27M	127.73K	+40.67%
Mar 31, 2024	MORGAN STANLEY	0.47%	414.5K	2.13M	-690.32K	-62.48%
Mar 31, 2024	BLACKROCK INC.	7.92%	7.01M	36.01M	-63.41K	-0.90%
Mar 31, 2024	PFM HEALTH SCIENCES, LP	7.33%	6.48M	33.32M	2.51K	+0.04%
Mar 31, 2024	TWO SIGMA INVESTMENTS, LP	0.26%	229.75K	1.18M	-274.85K	-54.47%
Mar 31, 2024	BRUCE & CO., INC.	0.23%	200K	1.03M	0	0
Mar 31, 2024	STATE STREET CORP	7.18%	6.35M	32.63M	1.23M	+23.98%
Mar 31, 2024	AVIDITY PARTNERS MANAGEMENT LP	6.54%	5.79M	29.74M	-574.86K	-9.04%
Mar 31, 2024	POINT72 ASSET MANAGEMENT, L.P.	4.05%	3.59M	18.43M	63.64K	+1.81%
Mar 31, 2024	ELMWOOD WEALTH MANAGEMENT, INC.	2.67%	2.36M	12.15M	-20	0.00%
Mar 31, 2024	PARADIGM BIOCAPITAL ADVISORS LP	2.46%	2.17M	11.17M	-751.23K	-25.69%
Mar 31, 2024	DIMENSIONAL FUND ADVISORS LP	2.36%	2.09M	10.73M	736.34K	+54.51%
Mar 31, 2024	SCHONFELD STRATEGIC ADVISORS LLC	2.08%	1.84M	9.47M	1.84M	+100.00%
Mar 31, 2024	FMR LLC	1.63%	1.45M	7.43M	586	+0.04%
Mar 31, 2024	SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC	0.12%	108.6K	558.23K	108.6K	+100.00%
Mar 31, 2024	AMERICAN CENTURY COMPANIES INC	0.12%	108.5K	557.69K	33.37K	+44.41%
Mar 31, 2024	ARTAL GROUP S.A.	0.12%	105.35K	541.48K	0	0
Mar 31, 2024	RAYMOND JAMES & ASSOCIATES	0.11%	101.15K	519.92K	-13.71K	-11.94%
Mar 31, 2024	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.08%	72.2K	371.11K	72.2K	+100.00%
Mar 31, 2024	RMB CAPITAL MANAGEMENT, LLC	0.11%	93.26K	479.35K	16.91K	+22.15%
Mar 31, 2024	NELSON CAPITAL MANAGEMENT, LLC	0.1%	85.02K	437K	0	0
Mar 31, 2024	ALLIANCEBERNSTEIN L.P.	0.1%	84.63K	435K	-1.13K	-1.32%
Mar 31, 2024	PROFUND ADVISORS LLC	0.09%	83.79K	430.67M	21.55K	+34.63%
Mar 31, 2024	GREEN ALPHA ADVISORS, LLC	0.09%	83.52K	429.3K	3.96K	+4.97%
Mar 31, 2024	PRUDENTIAL FINANCIAL INC	0.09%	81.62K	419.52K	66.69K	+446.89%
Mar 31, 2024	INVESCO LTD.	0.08%	70.26K	361.15K	-6.77K	-8.79%
Mar 31, 2024	STANSBERRY ASSET MANAGEMENT, LLC	0.07%	64.34K	330.69K	-4.11K	-6.01%
Mar 31, 2024	STATE OF WISCONSIN INVESTMENT BOARD	0.07%	63.6K	326.9K	-23K	-26.56%
Mar 31, 2024	EXCHANGE TRADED CONCEPTS, LLC	0.06%	53.16K	273.24K	29.24K	+122.20%
Mar 31, 2024	FRANKLIN RESOURCES INC	0.06%	50.96K	261.94K	-329	-0.64%
Mar 31, 2024	PEAK6 INVESTMENTS LLC	0.06%	50K	257K	0	0
Mar 31, 2024	COMMONWEALTH EQUITY SERVICES, LLC	0.06%	49.53K	255K	49.53K	+100.00%
Dec 31, 2023	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.96%	807.76K	4.63M	215.91K	+36.48%
Dec 31, 2023	NORTHERN TRUST CORP	0.9%	757.36K	4.34M	70.2K	+10.22%
Dec 31, 2023	GOLDMAN SACHS GROUP INC	0.79%	660.04K	3.78M	264.43K	+66.84%
Dec 31, 2023	MAVERICK CAPITAL LTD	0.78%	652.54K	3.74M	0	0
Dec 31, 2023	JPMORGAN CHASE & CO	0.69%	576.98K	3.31M	4.61K	+0.80%
Dec 31, 2023	TWO SIGMA INVESTMENTS, LP	0.6%	504.6K	2.89M	307.98K	+156.64%
Dec 31, 2023	72 INVESTMENT HOLDINGS, LLC	0.57%	474.07K	2.72M	0	0
Dec 31, 2023	RAFFERTY ASSET MANAGEMENT, LLC	0.46%	381.2K	2.18M	-126.2K	-24.87%
Dec 31, 2023	UBS GROUP AG	0.39%	326.53K	1.87M	175.02K	+115.52%
Dec 31, 2023	WELLINGTON MANAGEMENT GROUP LLP	0.37%	314.08K	1.8M	314.08K	+100.00%
Dec 31, 2023	BANK OF NEW YORK MELLON CORP	0.35%	295.23K	1.69M	30.99K	+11.73%
Dec 31, 2023	ROYAL BANK OF CANADA	0.34%	281.94K	1.62M	250K	+782.71%
Dec 31, 2023	WESTWOOD HOLDINGS GROUP INC	0.33%	277.21K	1.59M	124.77K	+81.85%
Dec 31, 2023	NUVEEN ASSET MANAGEMENT, LLC	0.32%	267.74K	1.53M	18.7K	+7.51%
Dec 31, 2023	BARCLAYS PLC	0.31%	263.47K	1.51M	9.24K	+3.63%
Dec 31, 2023	ROYCE & ASSOCIATES LP	0.3%	253.1K	1.45M	228.79K	+940.93%
Dec 31, 2023	ADAGE CAPITAL PARTNERS GP, L.L.C.	0.24%	203.93K	1.17M	-50K	-19.69%
Dec 31, 2023	BRUCE & CO., INC.	0.24%	200K	1.15M	0	0
Dec 31, 2023	LAURION CAPITAL MANAGEMENT LP	0.23%	192.35K	1.1M	27.16K	+16.44%
Dec 31, 2023	RESONANT CAPITAL ADVISORS, LLC	0.22%	184.2K	1.06M	184.2K	+100.00%
Dec 31, 2023	ABRDN PLC	0.22%	181.49K	1.04M	181.49K	+100.00%
Dec 31, 2023	MIRAE ASSET GLOBAL INVESTMENTS CO., LTD.	0.21%	173.61K	994.76K	-118.29K	-40.52%
Dec 31, 2023	CITIGROUP INC	0.19%	161.72K	926.65K	-59.45K	-26.88%
Dec 31, 2023	ATOM INVESTORS LP	0.19%	160.66K	920.59K	37.23K	+30.17%
Dec 31, 2023	ACADIAN ASSET MANAGEMENT LLC	0.17%	144.32K	826K	144.32K	+100.00%
Dec 31, 2023	POLAR ASSET MANAGEMENT PARTNERS INC.	0.17%	139.3K	798.19K	139.3K	+100.00%
Dec 31, 2023	GRANAHAN INVESTMENT MANAGEMENT, LLC	0.17%	138.33K	792.63K	1.95K	+1.43%
Dec 31, 2023	DEKABANK DEUTSCHE GIROZENTRALE	0.16%	130K	764K	130K	+100.00%
Dec 31, 2023	BLACKROCK INC.	8.44%	7.07M	40.5M	984.03K	+16.17%
Dec 31, 2023	PFM HEALTH SCIENCES, LP	7.74%	6.48M	37.13M	-243.95K	-3.63%
Dec 31, 2023	AVIDITY PARTNERS MANAGEMENT LP	7.59%	6.36M	36.44M	310K	+5.12%
Dec 31, 2023	STATE STREET CORP	6.11%	5.12M	29.34M	-233.72K	-4.37%
Dec 31, 2023	VANGUARD GROUP INC	4.73%	3.96M	22.7M	139.89K	+3.66%
Dec 31, 2023	POINT72 ASSET MANAGEMENT, L.P.	4.2%	3.52M	20.18M	21.54K	+0.62%
Dec 31, 2023	ALKEON CAPITAL MANAGEMENT LLC	3.72%	3.11M	17.84M	1.47M	+89.29%
Dec 31, 2023	PARADIGM BIOCAPITAL ADVISORS LP	3.49%	2.92M	16.75M	-20.66K	-0.70%
Dec 31, 2023	ELMWOOD WEALTH MANAGEMENT, INC.	2.82%	2.36M	13.55M	-155	-0.01%
Dec 31, 2023	ASSENAGON ASSET MANAGEMENT S.A.	2.7%	2.26M	12.94M	-390.04K	-14.73%
Dec 31, 2023	GEODE CAPITAL MANAGEMENT, LLC	2.14%	1.79M	10.28M	217.51K	+13.79%
Dec 31, 2023	BANK OF AMERICA CORP /DE/	1.9%	1.59M	9.13M	-713.66K	-30.94%
Dec 31, 2023	FMR LLC	1.72%	1.44M	8.28M	-619	-0.04%
Dec 31, 2023	DIMENSIONAL FUND ADVISORS LP	1.61%	1.35M	7.74M	757.11K	+127.53%
Dec 31, 2023	WOODLINE PARTNERS LP	1.36%	1.14M	6.54M	679.13K	+147.15%
Dec 31, 2023	MORGAN STANLEY	1.32%	1.1M	6.33M	-712.87K	-39.22%
Dec 31, 2023	KYNAM CAPITAL MANAGEMENT, LP	1.28%	1.07M	6.12M	0	0
Dec 31, 2023		1.12%	940.91K	5.39M	-988.48K	-51.23%
Dec 31, 2023	SILVERARC CAPITAL MANAGEMENT, LLC	1.08%	900.82K	5.16M	8.03K	+0.90%
Dec 31, 2023	FIL LTD	1.03%	860.67K	4.93M	0	0
Dec 31, 2023	CANDRIAM S.C.A.	1.03%	860.02K	4.93M	860.02K	+100.00%
Dec 31, 2023	ROKOS CAPITAL MANAGEMENT LLP	1%	840.63K	4.8M	-1.91M	-69.41%

CRBU Insiders

Among the CRBU insiders holding of 10.04% of the stake in company, CARIBOU BIOSCIENCES, INC., 10 percent owner, holds the largest shares of 3.99M. HAURWITZ RACHEL E., President and CEO, is the second largest CRBU insider with ownership of 3.37M shares. MCCLUNG BARBARA G, Chief Legal Officer, stands third with possession of 443.5K shares of that stake.

Insiders	Designation	Shares Held
CARIBOU BIOSCIENCES, INC.	10 percent owner	3.99M
HAURWITZ RACHEL E.	President and CEO	3.37M
MCCLUNG BARBARA G	Chief Legal Officer	443.5K
KANNER STEVEN	Chief Scientific Officer	431.56K
FISCHESSER RYAN	VP of Finance and Controller	110.37K
KHAN RUHI AHMAD	Chief Business Officer	66.94K
RIZVI SYED ALI-AAMIR	Chief Medical Officer	59.37K
RYALI SRIRAM	Chief Financial Officer	17.36K

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
Mar 14, 2025	HAURWITZ RACHEL E.	PURCHASE	1.02	20K	20.4K	3.37M
Feb 21, 2025	KANNER STEVEN	SALE	1.35	3.56K	4.81K	431.56K
Feb 21, 2025	KHAN RUHI AHMAD	SALE	1.35	3.56K	4.81K	66.94K
Feb 21, 2025	MCCLUNG BARBARA G	SALE	1.35	3.56K	4.81K	443.5K
Jan 29, 2025	RYALI SRIRAM	PURCHASE	1.42	17.36K	24.65K	17.36K
Jan 19, 2023	RIZVI SYED ALI-AAMIR	SALE	6.31	5.63K	35.51K	59.37K
Oct 06, 2022	FISCHESSER RYAN	SALE	10.80	10K	107.96K	110.37K
Aug 25, 2022	KANNER STEVEN	SALE	11.22	43.25K	485.22K	302.06K
Jan 11, 2022	FISCHESSER RYAN	PURCHASE	2.69	569	1.53K	102.26K
Dec 20, 2021	FISCHESSER RYAN	PURCHASE	2.69	1.14K	3.06K	101.7K
Dec 07, 2021	MCCLUNG BARBARA G	PURCHASE	2.69	12	32.28	342.86K
Oct 20, 2021	MCCLUNG BARBARA G	PURCHASE	2.69	9.18K	24.68K	342.8K
Oct 12, 2021	KANNER STEVEN	PURCHASE	1.81	99.55K	180.18K	199.72K
Oct 11, 2021	FISCHESSER RYAN	PURCHASE	2.69	1.75K	4.7K	100.56K
Jan 29, 2018	CARIBOU BIOSCIENCES, INC.	SALE	26.78	550.65K	14.75M	3.99M
Sep 13, 2017	CARIBOU BIOSCIENCES, INC.	SALE	0.00	1.05M	-	4.55M

Insider Transaction Summary (6 Months)

SHARESTRANS

PURCHASE37.36K2

SALES10.69K3

NET SHARES26.67K1

SHARES HELD4.33M5

% NET SHARES-99.38%-80%

Frequently Asked Questions

CRBU Stock Outstanding Shares

ShortableYes

OptionableYes

Short Percent Of Outstanding Shares10.63

Short Percent Of Float11.13

Shares Outstanding93.00M

Shares Float83.94M

Shares Short9.89M

Short Ratio9.66

11.13%

Short % of Float

10.63%

Short % of Shares Outstanding

Market Insider CRBU

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

10.04% Percentage of Shares held by All Insiders

62.14% Percentage of Shares held by All Institutions

69.07% Percentage of Float held by Institutions

179

Number of Institutions Holding Shares

Institutional Ownership

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Mar 31, 2024	UBS GROUP AG	0.46%	408.28K	2.1M	81.75K	+25.03%
Mar 31, 2024	ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC	0.05%	42.65K	219.24K	3.59K	+9.20%
Mar 31, 2024	VANGUARD GROUP INC	4.65%	4.11M	21.13M	148.75K	+3.75%
Mar 31, 2024	ALKEON CAPITAL MANAGEMENT LLC	3.1%	2.74M	14.1M	-370.06K	-11.89%
Mar 31, 2024	GEODE CAPITAL MANAGEMENT, LLC	2.08%	1.84M	9.47M	47.54K	+2.65%
Mar 31, 2024	CANDRIAM S.C.A.	1.29%	1.15M	5.89M	285.04K	+33.14%
Mar 31, 2024	BANK OF AMERICA CORP /DE/	1.26%	1.12M	5.74M	-476.37K	-29.90%
Mar 31, 2024	KYNAM CAPITAL MANAGEMENT, LP	1.21%	1.07M	5.49M	0	0
Mar 31, 2024	FIL LTD	0.97%	860.67K	4.42M	0	0
Mar 31, 2024	ROKOS CAPITAL MANAGEMENT LLP	0.95%	840.63K	4.3M	0	0
Mar 31, 2024	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.93%	824.66K	4.24M	16.9K	+2.09%
Mar 31, 2024	NORTHERN TRUST CORP	0.83%	734.27K	3.77M	-23.1K	-3.05%
Mar 31, 2024	MAVERICK CAPITAL LTD	0.74%	652.54K	3.35M	0	0
Mar 31, 2024	GOLDMAN SACHS GROUP INC	0.68%	602.9K	3.1M	-57.14K	-8.66%
Mar 31, 2024	JPMORGAN CHASE & CO	0.62%	549.05K	2.82M	-27.93K	-4.84%
Mar 31, 2024	RAFFERTY ASSET MANAGEMENT, LLC	0.61%	541.45K	2.78M	160.25K	+42.04%
Mar 31, 2024	CITADEL ADVISORS LLC	0.6%	526.91K	2.71M	526.91K	+100.00%
Mar 31, 2024	72 INVESTMENT HOLDINGS, LLC	0.54%	474.07K	2.44M	0	0
Mar 31, 2024	MARSHALL WACE, LLP	0.42%	368.26K	1.89M	310.53K	+537.90%
Mar 31, 2024	READYSTATE ASSET MANAGEMENT LP	0.39%	344.5K	1.77M	344.5K	+100.00%
Mar 31, 2024	BANK OF NEW YORK MELLON CORP	0.31%	270.18K	1.39M	-25.06K	-8.49%
Mar 31, 2024	NUVEEN ASSET MANAGEMENT, LLC	0.3%	267.74K	1.38M	0	0
Mar 31, 2024	ROYCE & ASSOCIATES LP	0.29%	258.93K	1.33M	5.83K	+2.30%
Mar 31, 2024	WESTWOOD HOLDINGS GROUP INC	0.28%	251.47K	1.29M	-25.74K	-9.28%
Mar 31, 2024	WOODLINE PARTNERS LP	0.27%	237.28K	1.22M	-903.39K	-79.20%
Mar 31, 2024	MIRAE ASSET GLOBAL INVESTMENTS CO., LTD.	0.26%	230.19K	1.1M	56.59K	+32.59%
Mar 31, 2024	RESONANT CAPITAL ADVISORS, LLC	0.21%	184.2K	946.78K	0	0
Mar 31, 2024	ABRDN PLC	0.21%	181.49K	932.84K	0	0
Mar 31, 2024	SQUAREPOINT OPS LLC	0.19%	169.92K	873.41K	77.26K	+83.37%
Mar 31, 2024	BALYASNY ASSET MANAGEMENT L.P.	0.18%	162.68K	836.19K	162.68K	+100.00%
Mar 31, 2024	EXODUSPOINT CAPITAL MANAGEMENT, LP	0.18%	158.61K	815K	158.61K	+100.00%
Mar 31, 2024	ACADIAN ASSET MANAGEMENT LLC	0.18%	156.24K	802K	11.92K	+8.26%
Mar 31, 2024	ADAGE CAPITAL PARTNERS GP, L.L.C.	0.17%	153.93K	791.22K	-50K	-24.52%
Mar 31, 2024	DEKABANK DEUTSCHE GIROZENTRALE	0.15%	130K	666K	0	0
Mar 31, 2024	ALYESKA INVESTMENT GROUP, L.P.	0.14%	125K	642.5K	0	0
Mar 31, 2024	RHUMBLINE ADVISERS	0.14%	122.52K	629.73K	3.46K	+2.90%
Mar 31, 2024	CITIGROUP INC	0.53%	469.52K	2.41M	307.8K	+190.33%
Mar 31, 2024	WELLINGTON MANAGEMENT GROUP LLP	0.5%	441.81K	2.27M	127.73K	+40.67%
Mar 31, 2024	MORGAN STANLEY	0.47%	414.5K	2.13M	-690.32K	-62.48%
Mar 31, 2024	BLACKROCK INC.	7.92%	7.01M	36.01M	-63.41K	-0.90%
Mar 31, 2024	PFM HEALTH SCIENCES, LP	7.33%	6.48M	33.32M	2.51K	+0.04%
Mar 31, 2024	TWO SIGMA INVESTMENTS, LP	0.26%	229.75K	1.18M	-274.85K	-54.47%
Mar 31, 2024	BRUCE & CO., INC.	0.23%	200K	1.03M	0	0
Mar 31, 2024	STATE STREET CORP	7.18%	6.35M	32.63M	1.23M	+23.98%
Mar 31, 2024	AVIDITY PARTNERS MANAGEMENT LP	6.54%	5.79M	29.74M	-574.86K	-9.04%
Mar 31, 2024	POINT72 ASSET MANAGEMENT, L.P.	4.05%	3.59M	18.43M	63.64K	+1.81%
Mar 31, 2024	ELMWOOD WEALTH MANAGEMENT, INC.	2.67%	2.36M	12.15M	-20	0.00%
Mar 31, 2024	PARADIGM BIOCAPITAL ADVISORS LP	2.46%	2.17M	11.17M	-751.23K	-25.69%
Mar 31, 2024	DIMENSIONAL FUND ADVISORS LP	2.36%	2.09M	10.73M	736.34K	+54.51%
Mar 31, 2024	SCHONFELD STRATEGIC ADVISORS LLC	2.08%	1.84M	9.47M	1.84M	+100.00%
Mar 31, 2024	FMR LLC	1.63%	1.45M	7.43M	586	+0.04%
Mar 31, 2024	SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC	0.12%	108.6K	558.23K	108.6K	+100.00%
Mar 31, 2024	AMERICAN CENTURY COMPANIES INC	0.12%	108.5K	557.69K	33.37K	+44.41%
Mar 31, 2024	ARTAL GROUP S.A.	0.12%	105.35K	541.48K	0	0
Mar 31, 2024	RAYMOND JAMES & ASSOCIATES	0.11%	101.15K	519.92K	-13.71K	-11.94%
Mar 31, 2024	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.08%	72.2K	371.11K	72.2K	+100.00%
Mar 31, 2024	RMB CAPITAL MANAGEMENT, LLC	0.11%	93.26K	479.35K	16.91K	+22.15%
Mar 31, 2024	NELSON CAPITAL MANAGEMENT, LLC	0.1%	85.02K	437K	0	0
Mar 31, 2024	ALLIANCEBERNSTEIN L.P.	0.1%	84.63K	435K	-1.13K	-1.32%
Mar 31, 2024	PROFUND ADVISORS LLC	0.09%	83.79K	430.67M	21.55K	+34.63%
Mar 31, 2024	GREEN ALPHA ADVISORS, LLC	0.09%	83.52K	429.3K	3.96K	+4.97%
Mar 31, 2024	PRUDENTIAL FINANCIAL INC	0.09%	81.62K	419.52K	66.69K	+446.89%
Mar 31, 2024	INVESCO LTD.	0.08%	70.26K	361.15K	-6.77K	-8.79%
Mar 31, 2024	STANSBERRY ASSET MANAGEMENT, LLC	0.07%	64.34K	330.69K	-4.11K	-6.01%
Mar 31, 2024	STATE OF WISCONSIN INVESTMENT BOARD	0.07%	63.6K	326.9K	-23K	-26.56%
Mar 31, 2024	EXCHANGE TRADED CONCEPTS, LLC	0.06%	53.16K	273.24K	29.24K	+122.20%
Mar 31, 2024	FRANKLIN RESOURCES INC	0.06%	50.96K	261.94K	-329	-0.64%
Mar 31, 2024	PEAK6 INVESTMENTS LLC	0.06%	50K	257K	0	0
Mar 31, 2024	COMMONWEALTH EQUITY SERVICES, LLC	0.06%	49.53K	255K	49.53K	+100.00%
Dec 31, 2023	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.96%	807.76K	4.63M	215.91K	+36.48%
Dec 31, 2023	NORTHERN TRUST CORP	0.9%	757.36K	4.34M	70.2K	+10.22%
Dec 31, 2023	GOLDMAN SACHS GROUP INC	0.79%	660.04K	3.78M	264.43K	+66.84%
Dec 31, 2023	MAVERICK CAPITAL LTD	0.78%	652.54K	3.74M	0	0
Dec 31, 2023	JPMORGAN CHASE & CO	0.69%	576.98K	3.31M	4.61K	+0.80%
Dec 31, 2023	TWO SIGMA INVESTMENTS, LP	0.6%	504.6K	2.89M	307.98K	+156.64%
Dec 31, 2023	72 INVESTMENT HOLDINGS, LLC	0.57%	474.07K	2.72M	0	0
Dec 31, 2023	RAFFERTY ASSET MANAGEMENT, LLC	0.46%	381.2K	2.18M	-126.2K	-24.87%
Dec 31, 2023	UBS GROUP AG	0.39%	326.53K	1.87M	175.02K	+115.52%
Dec 31, 2023	WELLINGTON MANAGEMENT GROUP LLP	0.37%	314.08K	1.8M	314.08K	+100.00%
Dec 31, 2023	BANK OF NEW YORK MELLON CORP	0.35%	295.23K	1.69M	30.99K	+11.73%
Dec 31, 2023	ROYAL BANK OF CANADA	0.34%	281.94K	1.62M	250K	+782.71%
Dec 31, 2023	WESTWOOD HOLDINGS GROUP INC	0.33%	277.21K	1.59M	124.77K	+81.85%
Dec 31, 2023	NUVEEN ASSET MANAGEMENT, LLC	0.32%	267.74K	1.53M	18.7K	+7.51%
Dec 31, 2023	BARCLAYS PLC	0.31%	263.47K	1.51M	9.24K	+3.63%
Dec 31, 2023	ROYCE & ASSOCIATES LP	0.3%	253.1K	1.45M	228.79K	+940.93%
Dec 31, 2023	ADAGE CAPITAL PARTNERS GP, L.L.C.	0.24%	203.93K	1.17M	-50K	-19.69%
Dec 31, 2023	BRUCE & CO., INC.	0.24%	200K	1.15M	0	0
Dec 31, 2023	LAURION CAPITAL MANAGEMENT LP	0.23%	192.35K	1.1M	27.16K	+16.44%
Dec 31, 2023	RESONANT CAPITAL ADVISORS, LLC	0.22%	184.2K	1.06M	184.2K	+100.00%
Dec 31, 2023	ABRDN PLC	0.22%	181.49K	1.04M	181.49K	+100.00%
Dec 31, 2023	MIRAE ASSET GLOBAL INVESTMENTS CO., LTD.	0.21%	173.61K	994.76K	-118.29K	-40.52%
Dec 31, 2023	CITIGROUP INC	0.19%	161.72K	926.65K	-59.45K	-26.88%
Dec 31, 2023	ATOM INVESTORS LP	0.19%	160.66K	920.59K	37.23K	+30.17%
Dec 31, 2023	ACADIAN ASSET MANAGEMENT LLC	0.17%	144.32K	826K	144.32K	+100.00%
Dec 31, 2023	POLAR ASSET MANAGEMENT PARTNERS INC.	0.17%	139.3K	798.19K	139.3K	+100.00%
Dec 31, 2023	GRANAHAN INVESTMENT MANAGEMENT, LLC	0.17%	138.33K	792.63K	1.95K	+1.43%
Dec 31, 2023	DEKABANK DEUTSCHE GIROZENTRALE	0.16%	130K	764K	130K	+100.00%
Dec 31, 2023	BLACKROCK INC.	8.44%	7.07M	40.5M	984.03K	+16.17%
Dec 31, 2023	PFM HEALTH SCIENCES, LP	7.74%	6.48M	37.13M	-243.95K	-3.63%
Dec 31, 2023	AVIDITY PARTNERS MANAGEMENT LP	7.59%	6.36M	36.44M	310K	+5.12%
Dec 31, 2023	STATE STREET CORP	6.11%	5.12M	29.34M	-233.72K	-4.37%
Dec 31, 2023	VANGUARD GROUP INC	4.73%	3.96M	22.7M	139.89K	+3.66%
Dec 31, 2023	POINT72 ASSET MANAGEMENT, L.P.	4.2%	3.52M	20.18M	21.54K	+0.62%
Dec 31, 2023	ALKEON CAPITAL MANAGEMENT LLC	3.72%	3.11M	17.84M	1.47M	+89.29%
Dec 31, 2023	PARADIGM BIOCAPITAL ADVISORS LP	3.49%	2.92M	16.75M	-20.66K	-0.70%
Dec 31, 2023	ELMWOOD WEALTH MANAGEMENT, INC.	2.82%	2.36M	13.55M	-155	-0.01%
Dec 31, 2023	ASSENAGON ASSET MANAGEMENT S.A.	2.7%	2.26M	12.94M	-390.04K	-14.73%
Dec 31, 2023	GEODE CAPITAL MANAGEMENT, LLC	2.14%	1.79M	10.28M	217.51K	+13.79%
Dec 31, 2023	BANK OF AMERICA CORP /DE/	1.9%	1.59M	9.13M	-713.66K	-30.94%
Dec 31, 2023	FMR LLC	1.72%	1.44M	8.28M	-619	-0.04%
Dec 31, 2023	DIMENSIONAL FUND ADVISORS LP	1.61%	1.35M	7.74M	757.11K	+127.53%
Dec 31, 2023	WOODLINE PARTNERS LP	1.36%	1.14M	6.54M	679.13K	+147.15%
Dec 31, 2023	MORGAN STANLEY	1.32%	1.1M	6.33M	-712.87K	-39.22%
Dec 31, 2023	KYNAM CAPITAL MANAGEMENT, LP	1.28%	1.07M	6.12M	0	0
Dec 31, 2023		1.12%	940.91K	5.39M	-988.48K	-51.23%
Dec 31, 2023	SILVERARC CAPITAL MANAGEMENT, LLC	1.08%	900.82K	5.16M	8.03K	+0.90%
Dec 31, 2023	FIL LTD	1.03%	860.67K	4.93M	0	0
Dec 31, 2023	CANDRIAM S.C.A.	1.03%	860.02K	4.93M	860.02K	+100.00%
Dec 31, 2023	ROKOS CAPITAL MANAGEMENT LLP	1%	840.63K	4.8M	-1.91M	-69.41%

CRBU Insiders

Insiders	Designation	Shares Held
CARIBOU BIOSCIENCES, INC.	10 percent owner	3.99M
HAURWITZ RACHEL E.	President and CEO	3.37M
MCCLUNG BARBARA G	Chief Legal Officer	443.5K
KANNER STEVEN	Chief Scientific Officer	431.56K
FISCHESSER RYAN	VP of Finance and Controller	110.37K
KHAN RUHI AHMAD	Chief Business Officer	66.94K
RIZVI SYED ALI-AAMIR	Chief Medical Officer	59.37K
RYALI SRIRAM	Chief Financial Officer	17.36K

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
Mar 14, 2025	HAURWITZ RACHEL E.	PURCHASE	1.02	20K	20.4K	3.37M
Feb 21, 2025	KANNER STEVEN	SALE	1.35	3.56K	4.81K	431.56K
Feb 21, 2025	KHAN RUHI AHMAD	SALE	1.35	3.56K	4.81K	66.94K
Feb 21, 2025	MCCLUNG BARBARA G	SALE	1.35	3.56K	4.81K	443.5K
Jan 29, 2025	RYALI SRIRAM	PURCHASE	1.42	17.36K	24.65K	17.36K
Jan 19, 2023	RIZVI SYED ALI-AAMIR	SALE	6.31	5.63K	35.51K	59.37K
Oct 06, 2022	FISCHESSER RYAN	SALE	10.80	10K	107.96K	110.37K
Aug 25, 2022	KANNER STEVEN	SALE	11.22	43.25K	485.22K	302.06K
Jan 11, 2022	FISCHESSER RYAN	PURCHASE	2.69	569	1.53K	102.26K
Dec 20, 2021	FISCHESSER RYAN	PURCHASE	2.69	1.14K	3.06K	101.7K
Dec 07, 2021	MCCLUNG BARBARA G	PURCHASE	2.69	12	32.28	342.86K
Oct 20, 2021	MCCLUNG BARBARA G	PURCHASE	2.69	9.18K	24.68K	342.8K
Oct 12, 2021	KANNER STEVEN	PURCHASE	1.81	99.55K	180.18K	199.72K
Oct 11, 2021	FISCHESSER RYAN	PURCHASE	2.69	1.75K	4.7K	100.56K
Jan 29, 2018	CARIBOU BIOSCIENCES, INC.	SALE	26.78	550.65K	14.75M	3.99M
Sep 13, 2017	CARIBOU BIOSCIENCES, INC.	SALE	0.00	1.05M	-	4.55M

Insider Transaction Summary (6 Months)

SHARESTRANS

PURCHASE37.36K2

SALES10.69K3

NET SHARES26.67K1

SHARES HELD4.33M5

% NET SHARES-99.38%-80%

CRBU Stock Ownership Breakdown

Caribou Biosciences, Inc.

CRBU Stock Outstanding Shares

Market Insider CRBU

Institutional Ownership

CRBU Insiders

Buying/Selling by Insiders

Insider Transaction Summary (6 Months)

Frequently Asked Questions

CRBU Stock Outstanding Shares

Market Insider CRBU

Institutional Ownership

CRBU Insiders

Buying/Selling by Insiders

Insider Transaction Summary (6 Months)

Frequently Asked Questions