BlackRock, Inc.

Position in KRRO — Korro Bio, Inc.

CIK 2012383 New York, NY

Position in KRRO

as of Jun 30, 2026 · filed Aug 7, 2026 Compact

Position Value

$10,776,240

+$5,568,976 QoQ

Shares Held

817,621

+77.7% QoQ

Ownership

5.55%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

of 106 holders

Holding Since

Sep 2024

8 quarters on record

Voting authority Sole 97% Shared 0% None 3%

Healthcare · as of Jun 30, 2026

BlackRock, Inc. holds $85,016,936,299 across 474 Biotechnology names. KRRO ranks #267 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	24,109,373	$11,975,848,839
2	REGN	Regeneron Pharmaceuticals, Inc.	9,113,506	$5,682,635,520
3	ALNY	Alnylam Pharmaceuticals, Inc.	10,907,675	$3,283,537,392
4	RVMD	Revolution Medicines, Inc.	13,695,790	$2,564,947,540
5	MRNA	Moderna, Inc.	30,599,409	$2,142,876,602
6	INCY	Incyte Corp	18,032,718	$2,044,188,902
7	CYTK	Cytokinetics Inc	20,094,362	$1,711,838,691
8	ROIV	Roivant Sciences Ltd.	48,236,091	$1,707,075,250

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$9,852,656	747,546	—	Shares	Sole	2026-07-29
2026-06-30	$10,776,240	817,621	+77.7%	Shares	Sole	2026-08-07
2026-03-31	$5,207,264	460,006	+0.6%	Shares	Sole	2026-05-13
2025-12-31	$3,663,761	457,399	+2.4%	Shares	Sole	2026-02-12
2025-09-30	$21,392,362	446,698	-3.3%	Shares	Sole	2025-11-12
2025-06-30	$5,768,989	461,889	+4.6%	Shares	Sole	2025-08-12
2025-03-31	$7,685,292	441,430	-2.4%	Shares	Sole	2025-05-02
2024-12-31	$17,224,728	452,449	+0.6%	Shares	Sole	2025-02-07
2024-09-30	$15,037,326	449,950	—	Shares	Sole	2024-11-13
No filing history on record for this holder in this stock.