Korro Bio, Inc. - Common Stock, par value $0.001 per share (KRRO) Institutional Ownership

13F Institutional Holders and Ownership History from Q4 2023 to Q4 2025

Type / Class
Equity / Common Stock, par value $0.001 per share
Symbol
KRRO on Nasdaq
Shares outstanding
14,713,909
Price per share
$11.76
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
7,561,789
Total reported value
$60,569,573
% of total 13F portfolios
0%
Share change
-1,820,815
Value change
-$128,778,003
Number of holders
82
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Korro Bio, Inc. - Common Stock, par value $0.001 per share (KRRO) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
New Enterprise Associates 17, L.P. 9.9% $17,130,522 1,456,677 Ali Behbahani 10 Mar 2026
Point72 Asset Management, L.P. 5.7% $9,606,568 +$9,606,568 816,885 Steven A. Cohen 10 Mar 2026
Lynx1 Capital Management LP 7.8% $5,531,593 733,633 Lynx1 Capital Management LP 23 Dec 2025
Nantahala Capital Management, LLC 6.4% $5,394,000 600,000 Nantahala Capital Management, LLC 31 Dec 2025
VANGUARD GROUP INC 5.2% $3,921,910 489,639 The Vanguard Group 31 Dec 2025
CITADEL ADVISORS LLC 3.9% $6,163,449 369,733 Citadel Advisors LLC 31 Dec 2024
Deep Track Capital, LP 3% $3,638,575 277,966 Deep Track Capital, LP 30 Jun 2025
FMR LLC 0.4% $303,227 37,857 FMR LLC 31 Dec 2025
ALLIANCEBERNSTEIN L.P. 0.1% -92% $100,793 -$9,138,050 7,700 -99% AllianceBernstein L.P. 30 Jun 2025

As of 31 Dec 2025, 82 institutional investors reported holding 7,561,789 shares of Korro Bio, Inc. - Common Stock, par value $0.001 per share (KRRO). This represents 51% of the company’s total 14,713,909 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Korro Bio, Inc. - Common Stock, par value $0.001 per share (KRRO) together control 48% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Atlas Venture Life Science Advisors, LLC 7.7% 1,137,149 0% 1.1% $9,108,563
NEA Management Company, LLC 7.4% 1,090,793 0% 0.45% $8,737,252
Lynx1 Capital Management LP 4.6% 677,915 1.1% $5,430,099
Nantahala Capital Management, LLC 4.1% 600,000 0.29% $4,806,000
VANGUARD GROUP INC 3.3% 489,639 +24% 0% $3,922,009
BlackRock, Inc. 3.1% 457,399 +2.4% 0% $3,663,766
TCG Crossover Management, LLC 2.8% 416,301 0% 0.11% $3,334,571
Siren, L.L.C. 2.4% 347,718 -17% 0.08% $2,785,221
JANE STREET GROUP, LLC 2% 288,457 0% $2,310,541
72 Investment Holdings, LLC 1.9% 276,831 0% 4.4% $2,217,416
SUSQUEHANNA INTERNATIONAL GROUP, LLP 1.3% 196,827 0% $1,576,584
GEODE CAPITAL MANAGEMENT, LLC 1.1% 162,760 -0.11% 0% $1,303,924
MILLENNIUM MANAGEMENT LLC 1.1% 161,092 -38% 0% $1,290,347
STATE STREET CORP 0.99% 146,221 +17% 0% $1,171,230
TWO SIGMA INVESTMENTS, LP 0.54% 78,984 +23% 0% $632,662
RENAISSANCE TECHNOLOGIES LLC 0.51% 74,900 +85% 0% $599,949
MORGAN STANLEY 0.47% 69,728 -58% 0% $558,521
F/m Investments LLC 0.45% 65,548 +19% 0.02% $525,039
EMERALD MUTUAL FUND ADVISERS TRUST 0.45% 65,548 +11% 0.03% $525,039
CITADEL ADVISORS LLC 0.4% 58,329 -62% 0% $467,215
XTX Topco Ltd 0.39% 57,067 0.01% $457,107
NORTHERN TRUST CORP 0.38% 55,640 -2.9% 0% $445,677
GOLDMAN SACHS GROUP INC 0.35% 51,950 +231% 0% $416,120
Graham Capital Management, L.P. 0.28% 40,766 0.01% $326,536
AQR CAPITAL MANAGEMENT LLC 0.28% 40,647 -16% 0% $325,582

Institutional Holders of Korro Bio, Inc. - Common Stock, par value $0.001 per share (KRRO) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 7,561,789 $60,569,573 -$128,778,003 $8.01 82
2025 Q3 9,720,188 $465,499,291 +$39,225,055 $47.89 90
2025 Q2 8,912,049 $111,311,830 -$12,666,834 $12.49 68
2025 Q1 9,704,902 $168,963,706 -$381,515 $17.41 75
2024 Q4 9,447,026 $359,649,124 +$39,856,612 $38.07 83
2024 Q3 8,537,080 $285,308,897 -$12,430,500 $33.42 70
2024 Q2 8,435,947 $285,725,569 +$37,204,728 $33.87 63
2024 Q1 6,909,485 $618,593,997 +$31,054,435 $90.00 48
2023 Q4 5,491,489 $260,365,563 +$260,365,563 $47.93 38