FMR LLC

Position in CRBU — Caribou Biosciences, Inc.

CIK 315066 BOSTON, MA

Position in CRBU

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$1,375,521

+$221,233 QoQ

Shares Held

723,959

-0.3% QoQ

Ownership

0.730%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#16

of 137 holders

Holding Since

Sep 2021

19 quarters on record

Voting authority Sole 98.57312361611639.ToString("F0")% Shared 0.ToString("F0")% None 1.4268763838836178.ToString("F0")%

Healthcare · as of Mar 31, 2026

FMR LLC holds $49,683,576,696 across 351 Biotechnology names. CRBU ranks #198 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ALNY	Alnylam Pharmaceuticals, Inc.	14,579,166	$4,823,808,652
2	ARGX	Argenx SE	4,991,034	$3,644,702,577
3	MRNA	Moderna, Inc.	45,672,024	$2,320,138,818
4	ROIV	Roivant Sciences Ltd.	77,981,253	$2,160,080,705
5	INSM	INSMED Inc	13,160,167	$2,151,950,504
6	IONS	Ionis Pharmaceuticals Inc	24,556,637	$1,843,957,869
7	RPRX	Royalty Pharma plc	25,152,242	$1,206,553,046
8	REGN	Regeneron Pharmaceuticals, Inc.	1,518,192	$1,173,015,865

19 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,375,521	723,959	-0.3%	Shares	Defined	2026-05-15
2025-12-31	$1,154,288	725,968	-0.4%	Shares	Defined	2026-02-17
2025-09-30	$1,698,574	729,002	-0.1%	Shares	Defined	2025-11-13
2025-06-30	$919,094	729,441	-50.0%	Shares	Defined	2025-08-14
2025-03-31	$1,333,068	1,460,098	-11.4%	Shares	Defined	2025-05-12
2024-12-31	$2,619,054	1,647,205	+4.2%	Shares	Defined	2025-02-13
2024-09-30	$3,099,725	1,581,493	+7.4%	Shares	Defined	2024-11-13
2024-06-30	$2,413,893	1,471,887	+1.8%	Shares	Defined	2024-08-13
2024-03-31	$7,428,130	1,445,162	+0.0%	Shares	Defined	2024-05-13
2023-12-31	$8,277,418	1,444,576	-0.0%	Shares	Defined	2024-02-13
2023-09-30	$6,908,031	1,445,195	+0.1%	Shares	Defined	2023-11-13
2023-06-30	$6,133,548	1,443,188	-0.0%	Shares	Defined	2023-08-11
2023-03-31	$7,666,699	1,443,823	+0.1%	Shares	Defined	2023-08-11
2022-12-31	$9,062,328	1,443,046	-0.0%	Shares	Defined	2023-02-13
2022-09-30	$15,229,906	1,443,593	-5.3%	Shares	Defined	2022-11-10
2022-06-30	$8,277,137	1,524,335	-24.3%	Shares	Defined	2022-08-12
2022-03-31	$18,479,642	2,013,033	-39.4%	Shares	Defined	2022-05-13
2021-12-31	$50,148,355	3,323,284	0.0%	Shares	Defined	2022-02-14
2021-09-30	$79,326,789	3,323,284	—	Shares	Defined	2022-02-14
No filing history on record for this holder in this stock.