Latest Period
Q4 2025
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
82
Shares (Excl. Options)
7,561,789
Price
$8.01
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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
- $13.69
- 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
Quick Takeaways
- KRRO - Korro Bio, Inc. - Common Stock, par value $0.001 per share is tracked under CUSIP 500946108.
- 82 institutions reported positions in Q4 2025.
- 9 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 82 to 17 between Q4 2025 and Q1 2026.
- Reported value moved from $60,569,573 to $18,188,856.
Why This Matters
- 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.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 82 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 500946108?
CUSIP 500946108 identifies KRRO - Korro Bio, Inc. - Common Stock, par value $0.001 per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
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 | |||
| Point72 Asset Management, L.P. | 5.7% | $9,606,568 | +$9,606,568 | 816,885 | Steven A. Cohen | 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 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 53% 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 49% 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 | 7.9% | 1,137,149 | 0% | 1.1% | $9,108,563 |
| NEA Management Company, LLC | 7.6% | 1,090,793 | 0% | 0.45% | $8,737,252 |
| Lynx1 Capital Management LP | 4.7% | 677,915 | 1.1% | $5,430,099 | |
| Nantahala Capital Management, LLC | 4.2% | 600,000 | 0.29% | $4,806,000 | |
| VANGUARD GROUP INC | 3.4% | 489,639 | +24% | 0% | $3,922,009 |
| BlackRock, Inc. | 3.2% | 457,399 | +2.4% | 0% | $3,663,766 |
| TCG Crossover Management, LLC | 2.9% | 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 | 1.4% | 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 | 1% | 146,221 | +17% | 0% | $1,171,230 |
| TWO SIGMA INVESTMENTS, LP | 0.55% | 78,984 | +23% | 0% | $632,662 |
| RENAISSANCE TECHNOLOGIES LLC | 0.52% | 74,900 | +85% | 0% | $599,949 |
| MORGAN STANLEY | 0.49% | 69,728 | -58% | 0% | $558,521 |
| F/m Investments LLC | 0.46% | 65,548 | +19% | 0.02% | $525,039 |
| EMERALD MUTUAL FUND ADVISERS TRUST | 0.46% | 65,548 | +11% | 0.03% | $525,039 |
| CITADEL ADVISORS LLC | 0.41% | 58,329 | -62% | 0% | $467,215 |
| XTX Topco Ltd | 0.4% | 57,067 | 0.01% | $457,107 | |
| NORTHERN TRUST CORP | 0.39% | 55,640 | -2.9% | 0% | $445,677 |
| GOLDMAN SACHS GROUP INC | 0.36% | 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 |
|---|---|---|---|---|---|
| 2026 Q1 | 1,606,783 | $18,188,856 | +$9,663,486 | $11.32 | 17 |
| 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 |