Latest Period
Q1 2026
Security Snapshot
Korro Bio, Inc. - Common Stock, par value $0.001 per share (KRRO) Institutional Ownership
CUSIP: 500946108
13F Institutional Holders and Ownership History from Q4 2023 to Q1 2026
Institutions Reporting
97
Shares (Excl. Options)
12,801,598
Price
$11.32
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- Type / Class
- Equity / Common Stock, par value $0.001 per share
- Symbol
- KRRO on Nasdaq
- Shares outstanding
- 14,376,598
- Price per share
- $12.80
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 12,801,598
- Total reported value
- $144,841,311
- % of total 13F portfolios
- 0%
- Share change
- +5,225,816
- Value change
- +$60,140,494
- Number of holders
- 97
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Key facts
- KRRO - Korro Bio, Inc. - Common Stock, par value $0.001 per share is tracked under CUSIP 500946108.
- 97 institutions reported positions in Q1 2026.
- 8 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 82 to 97 between Q4 2025 and Q1 2026.
- Reported value moved from $60,569,573 to $144,841,311.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 97 institutions filings for Q1 2026.
Security key
500946108
Latest holder period
Q1 2026
13F holders
97
13D/G owners
8
CIK / CUSIP context first
Open Q1 2026 holders
KRRO full holder history
Korro Bio, Inc. SEC filings
Korro Bio, Inc. company facts
Korro Bio, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 500946108:
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 |
|---|---|---|---|---|---|---|---|---|
| Lynx1 Capital Management LP | 11% | +36% | $18,351,871 | +$9,599,630 | 1,538,296 | +110% | Lynx1 Capital Management LP | 31 Mar 2026 |
| Venrock Healthcare Capital Partners III, L.P. | 9.9% | $17,760,012 | 1,488,685 | Venrock Healthcare Capital Partners III, L.P. | 10 Mar 2026 | |||
| New Enterprise Associates 17, L.P. | 9.9% | $17,130,522 | 1,456,677 | Ali Behbahani | 10 Mar 2026 | |||
| Nantahala Capital Management, LLC | 6.4% | $5,394,000 | 600,000 | Nantahala Capital Management, LLC | 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 Mar 2026, 97 institutional investors reported holding 12,801,598 shares of Korro Bio, Inc. - Common Stock, par value $0.001 per share (KRRO). This represents 89% of the company’s total 14,376,598 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 82% 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 |
|---|---|---|---|---|---|
| Lynx1 Capital Management LP | 11% | 1,538,296 | +127% | 2.8% | $17,413,511 |
| NEA Management Company, LLC | 9% | 1,297,893 | +19% | 0.84% | $14,692,149 |
| Atlas Venture Life Science Advisors, LLC | 7.9% | 1,137,149 | 0% | 1.6% | $12,872,527 |
| Balyasny Asset Management L.P. | 7.2% | 1,040,054 | 0.02% | $11,773,411 | |
| Venrock Adviser, LLC | 7% | 1,009,500 | 0.43% | $11,427,540 | |
| Affinity Asset Advisors, LLC | 4.9% | 706,904 | 0.47% | $8,002,153 | |
| Nantahala Capital Management, LLC | 4.6% | 660,036 | +10% | 0.47% | $7,471,608 |
| ADAR1 Capital Management, LLC | 3.8% | 540,054 | 0.37% | $6,113,411 | |
| BlackRock, Inc. | 3.2% | 460,006 | +0.57% | 0% | $5,207,267 |
| Driehaus Capital Management LLC | 3.1% | 450,045 | 0.04% | $5,094,509 | |
| TCG Crossover Management, LLC | 2.9% | 416,301 | 0% | 0.13% | $4,712,527 |
| Siren, L.L.C. | 2.4% | 347,718 | 0% | 0.11% | $3,936,168 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.2% | 310,913 | 0% | 0% | $3,519,535 |
| 72 Investment Holdings, LLC | 1.9% | 276,831 | 0% | 6.3% | $3,133,727 |
| AQR CAPITAL MANAGEMENT LLC | 1.9% | 267,755 | +559% | 0% | $3,030,986 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 1.6% | 228,400 | 0% | $2,585,488 | |
| GEODE CAPITAL MANAGEMENT, LLC | 1.2% | 173,643 | +6.7% | 0% | $1,965,961 |
| TWO SIGMA INVESTMENTS, LP | 1.2% | 165,472 | +110% | 0% | $1,873,143 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1% | 148,559 | 0% | 0% | $1,681,688 |
| STATE STREET CORP | 0.98% | 140,341 | -4% | 0% | $1,588,660 |
| RENAISSANCE TECHNOLOGIES LLC | 0.95% | 136,227 | +82% | 0% | $1,542,090 |
| JANE STREET GROUP, LLC | 0.8% | 115,704 | -60% | 0% | $1,309,769 |
| Kalehua Capital Management LLC | 0.76% | 109,376 | 0.88% | $1,238,136 | |
| JPMORGAN CHASE & CO | 0.48% | 68,500 | +2314% | 0% | $704,180 |
| MILLENNIUM MANAGEMENT LLC | 0.44% | 63,606 | -61% | 0% | $720,020 |
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 |
|---|---|---|---|---|---|
| 2026 Q1 | 12,801,598 | $144,841,311 | +$60,140,494 | $11.32 | 97 |
| 2025 Q4 | 7,561,789 | $60,569,573 | -$128,796,872 | $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 |