Korro Bio, Inc.
KRRO- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001703647
In the last 90 days, Korro Bio, Inc. insiders filed 1 open-market purchase and 8 sales; 106 institutions reported holding it in 13F filings for Q2 2026, worth $190.1M in total; no superinvestor holds it.
Holders of 5% or more of KRRO
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Korro Bio, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Venrock Healthcare Capital Partners III, L.P. | 13G | 9.90%1.49M shares | New | Mar 17, 20261 filing | Mar 17, 2026 | SEC |
| New Enterprise Associates 17, L.P. | 13D/A | 9.90%1.46M shares | – | Mar 12, 20261 filing | Mar 12, 2026 | SEC |
| Driehaus Capital Management LLC | 13G/A | 7.16%672.0K shares | +1.88 ppfrom 5.28% | Feb 14, 20252 filings | Nov 14, 2025 | SEC |
| Point72 Asset Management, L.P. | 13G | 5.70%816.9K shares | −3.00 ppfrom 8.70% | Aug 14, 20252 filings | Mar 11, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
11 Schedule 13D and 13G filings on Korro Bio, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 202610:16 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Mar 17, 20264:15 PM ET | Venrock Healthcare Capital Partners III, L.P.and 6 others | 13G | 9.90%1.49M shares | New | Mar 10, 2026 | SEC |
| Mar 12, 20267:32 PM ET | New Enterprise Associates 17, L.P.and 11 others | 13D/A | 9.90%1.46M shares | – | Mar 10, 2026 | SEC |
| Mar 11, 20265:24 PM ET | Point72 Asset Management, L.P.and 5 others | 13G | 5.70%816.9K shares | −3.00 ppfrom 8.70% | Mar 10, 2026 | SEC |
| Nov 14, 20258:52 AM ET | Driehaus Capital Management LLC | 13G/A | 7.16%672.0K shares | +1.88 ppfrom 5.28% | Sep 30, 2025 | SEC |
| Aug 14, 20254:53 PM ET | Point72 Asset Management, L.P.and 5 others | 13G/A | 8.70%816.9K shares | – | Jun 30, 2025 | SEC |
| Aug 14, 20258:47 AM ET | Deep Track Capital, LPand 2 others | 13G/A | 2.96%278.0K shares | –Below 5% | Jun 30, 2025 | SEC |
| Aug 13, 20253:50 PM ET | Alliancebernstein L.P. | 13G/A | 0.10%7.70K shares | −7.40 ppfrom 7.50%Below 5% | Jun 30, 2025 | SEC |
| Feb 14, 20256:20 PM ET | Citadel Advisors LLCand 6 others | 13G/A | 3.90%369.7K shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 14, 20257:52 AM ET | Driehaus Capital Management LLC | 13G | 5.28%494.9K shares | New | Dec 31, 2024 | SEC |
| Feb 5, 20254:31 PM ET | Alliancebernstein L.P. | 13G | 7.50%705.8K shares | New | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Korro Bio, Inc. shares.
No Form 144 notices for Korro Bio, Inc. are on file.