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Korro Bio, Inc. (KRRO) institutional ownership

Latest close $10.07 Jul 29, 2026
Market cap$130M 52-week range SectorHealthcare
Funds holding · Q1 2026
97
reported KRRO position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
62 buyers · 35 sellers

Korro Bio, Inc. (KRRO) price and institutional activity

Dates

Q1 2026

$0 bought by 62 investors
Balyasny Asset Management L.P.Venrock Adviser, LLC +60 more
$0 sold by 35 investors
Susquehanna International Group, LLPJane Street Group, LLC +33 more
Bought Sold Totals per quarter; hover a bar for the names.

Korro Bio, Inc. (KRRO) institutional activity · 97

Investor Type Est. change Change Δ Own Date
Balyasny Asset Management L.P. · New
Change +1.0M Date Q1 2026
Balyasny Asset Management L.P. New· Q1 2026 +1.0M Q1 2026
Venrock Adviser, LLC · New
Change +1.0M Date Q1 2026
Venrock Adviser, LLC New· Q1 2026 +1.0M Q1 2026
Lynx1 Capital Management LP · Added
Change +860K Date Q1 2026
Lynx1 Capital Management LP Added· Q1 2026 +860K Q1 2026
Affinity Asset Advisors, LLC · New
Change +707K Date Q1 2026
Affinity Asset Advisors, LLC New· Q1 2026 +707K Q1 2026
Adar1 Capital Management, LLC · New
Change +540K Date Q1 2026
Adar1 Capital Management, LLC New· Q1 2026 +540K Q1 2026
Driehaus Capital Management LLC · New
Change +450K Date Q1 2026
Driehaus Capital Management LLC New· Q1 2026 +450K Q1 2026
Adage Capital Partners Gp, L.L.C. · New
Change +228K Date Q1 2026
Adage Capital Partners Gp, L.L.C. New· Q1 2026 +228K Q1 2026
AQR Capital Management LLC · Added
Change +227K Date Q1 2026
AQR Capital Management LLC Added· Q1 2026 +227K Q1 2026
Nea Management Company, LLC · Added
Change +207K Date Q1 2026
Nea Management Company, LLC Added· Q1 2026 +207K Q1 2026
Susquehanna International Group, LLP · Exited
Change −197K Δ Own −100.0% Date Q1 2026
Susquehanna International Group, LLP Exited· Q1 2026 −197K −100.0% Q1 2026
Jane Street Group, LLC · Reduced
Change −173K Date Q1 2026
Jane Street Group, LLC Reduced· Q1 2026 −173K Q1 2026
Kalehua Capital Management LLC · New
Change +109K Date Q1 2026
Kalehua Capital Management LLC New· Q1 2026 +109K Q1 2026
Millennium Management LLC · Reduced
Change −97K Date Q1 2026
Millennium Management LLC Reduced· Q1 2026 −97K Q1 2026
Two Sigma Investments, LP · Added
Change +86K Δ Own +109.5% Date Q1 2026
Two Sigma Investments, LP Added· Q1 2026 +86K +109.5% Q1 2026
JPMorgan Chase & Co · Added
Change +66K Date Q1 2026
JPMorgan Chase & Co Added· Q1 2026 +66K Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 97

Famous investor activity in Korro Bio, Inc. (KRRO)

Korro Bio, Inc. (KRRO) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Vincent Loic A. · Officer Grant (A) 8K
Owned 26K ΔOwn +41.0% Trade date Jul 15, 2026 Filed date Jul 17, 2026
Vincent Loic A. Officer Grant (A) 8K 26K +41.0% Jul 15, 2026 Jul 17, 2026
Dolan Oliver · Officer Grant (A) 6K
Owned 24K ΔOwn +30.4% Trade date Jul 15, 2026 Filed date Jul 17, 2026
Dolan Oliver Officer Grant (A) 6K 24K +30.4% Jul 15, 2026 Jul 17, 2026
Cerio Jeffrey · Officer Grant (A) 6K
Owned 42K ΔOwn +18.4% Trade date Jul 15, 2026 Filed date Jul 17, 2026
Cerio Jeffrey Officer Grant (A) 6K 42K +18.4% Jul 15, 2026 Jul 17, 2026
Chappell Todd · Officer Grant (A) 8K
Owned 24K ΔOwn +44.2% Trade date Jul 15, 2026 Filed date Jul 17, 2026
Chappell Todd Officer Grant (A) 8K 24K +44.2% Jul 15, 2026 Jul 17, 2026
Formela Jean Francois · Director 2 operations −$130K
Price $13.96 Qty −9K Owned 146K Trade date Jul 6, 2026 Filed date Jul 7, 2026
Formela Jean Francois Director 2 operations $13.96 −9K −$130K 146K Jul 6, 2026 Jul 7, 2026
Formela Jean Francois · Director 2 operations −$1.4M
Price $14.03 Qty −101K Owned 155K Trade date Jul 2, 2026 Filed date Jul 7, 2026
Formela Jean Francois Director 2 operations $14.03 −101K −$1.4M 155K Jul 2, 2026 Jul 7, 2026
Formela Jean Francois · Director 4 operations −$707K
Price $14.60–$14.98 Qty −48K Owned 170K Trade date Jun 24, 2026 Filed date Jun 24, 2026
Formela Jean Francois Director 4 operations $14.60–$14.98 −48K −$707K 170K Jun 24, 2026 Jun 24, 2026
Formela Jean Francois · Director 2 operations −$1.7M
Price $14.25 Qty −119K Owned 177K Trade date Jun 23, 2026 Filed date Jun 24, 2026
Formela Jean Francois Director 2 operations $14.25 −119K −$1.7M 177K Jun 23, 2026 Jun 24, 2026
Formela Jean Francois · Director 2 operations −$55K
Price $13.95 Qty −4K Owned 194K Trade date Jun 22, 2026 Filed date Jun 24, 2026
Formela Jean Francois Director 2 operations $13.95 −4K −$55K 194K Jun 22, 2026 Jun 24, 2026
Chappell Todd · Officer Sell −$34K
Price $10.83 Qty −3K Owned 17K Trade date Jun 16, 2026 Filed date Jun 17, 2026
Chappell Todd Officer Sell $10.83 −3K −$34K 17K Jun 16, 2026 Jun 17, 2026
Vincent Loic A. · Officer Sell −$37K
Price $10.83 Qty −3K Owned 18K Trade date Jun 16, 2026 Filed date Jun 17, 2026
Vincent Loic A. Officer Sell $10.83 −3K −$37K 18K Jun 16, 2026 Jun 17, 2026
Cerio Jeffrey · Officer Sell −$72K
Price $10.83 Qty −7K Owned 35K Trade date Jun 16, 2026 Filed date Jun 17, 2026
Cerio Jeffrey Officer Sell $10.83 −7K −$72K 35K Jun 16, 2026 Jun 17, 2026
Dolan Oliver · Officer Sell −$37K
Price $10.83 Qty −3K Owned 18K Trade date Jun 16, 2026 Filed date Jun 17, 2026
Dolan Oliver Officer Sell $10.83 −3K −$37K 18K Jun 16, 2026 Jun 17, 2026
Behbahani Ali · Director Grant (A) 15K
Owned 15K Trade date Jun 10, 2026 Filed date Jun 11, 2026
Behbahani Ali Director Grant (A) 15K 15K Jun 10, 2026 Jun 11, 2026
Meyers Rachel · Director Grant (A) 15K
Owned 15K Trade date Jun 10, 2026 Filed date Jun 11, 2026
Meyers Rachel Director Grant (A) 15K 15K Jun 10, 2026 Jun 11, 2026
15 of 51
15 of 51 Sign in to continue to older insider transactions.

Korro Bio, Inc. (KRRO) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
New Enterprise Associates 17, L.P. 1.1M
% of shares outstanding 11.8% Filing date Apr 24, 2024
New Enterprise Associates 17, L.P. 1.1M 11.8% Apr 24, 2024
Atlas Venture Fund Xi, L.P. 942K
% of shares outstanding 11.8% Filing date Nov 13, 2023
Atlas Venture Fund Xi, L.P. 942K 11.8% Nov 13, 2023
Wasatch Advisors Inc
% of shares outstanding 9.2% Filing date Feb 11, 2022
Wasatch Advisors Inc 9.2% Feb 11, 2022
Deep Track Capital, LP
% of shares outstanding 9.1% Filing date Nov 14, 2024
Deep Track Capital, LP 9.1% Nov 14, 2024
Lynx1 Capital Management LP 734K
% of shares outstanding 7.8% Filing date Jan 5, 2026
Lynx1 Capital Management LP 734K 7.8% Jan 5, 2026
Driehaus Capital Management LLC 672K
% of shares outstanding 7.2% Filing date Nov 14, 2025
Driehaus Capital Management LLC 672K 7.2% Nov 14, 2025
Platanus Investment LLC 540K
% of shares outstanding 6.8% Filing date Nov 17, 2023
Platanus Investment LLC 540K 6.8% Nov 17, 2023
FMR LLC 580K
% of shares outstanding 6.2% Filing date Nov 12, 2024
FMR LLC 580K 6.2% Nov 12, 2024
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Korro Bio, Inc. (KRRO) ownership FAQ

Who owns KRRO?

97 reporting institutions disclosed KRRO position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.