KRRO
Korro Bio, Inc.
NASDAQ · Healthcare · Biotechnology · US
$12.13
+4.39%2
Insider buys (3m)
23
Insider sells (3m)
-$4.6M
Net value (3m)
+14.0%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 28, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 51 | $14 |
| Aug 28, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 249 | $14 |
| Aug 21, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 23,584 | $14 |
| Aug 21, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 4,884 | $14 |
| Aug 13, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 1,775 | $14 |
| Aug 13, 2026 | Lynx1 Capital Management LP · 10 percent owner | Purchase | 1,462 | $13 |
| Aug 13, 2026 | Lynx1 Capital Management LP · 10 percent owner | Purchase | 5,222 | $11 |
| Aug 13, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 368 | $14 |
| Aug 5, 2026 | Aiyar Ram · director, officer: President and CEO | Sale | 5,802 | $11 |
| Jul 17, 2026 | Dolan Oliver · officer: Senior Vice President, Finance | A-Award | 5,500 | $0.00 |
| Jul 17, 2026 | Chappell Todd · officer: Chief Operating Officer | A-Award | 7,500 | $0.00 |
| Jul 17, 2026 | Cerio Jeffrey · officer: General Counsel | A-Award | 6,500 | $0.00 |
| Jul 17, 2026 | Vincent Loic A · officer: Chief Scientific Officer | A-Award | 7,500 | $0.00 |
| Jul 7, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 14,745 | $14 |
| Jul 7, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 8,506 | $14 |
| Jul 7, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 817 | $14 |
| Jul 7, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 85,955 | $14 |
| Jun 24, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 580 | $14 |
| Jun 24, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 114 | $15 |
| Jun 24, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 6,979 | $15 |
| Jun 24, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 666 | $15 |
| Jun 24, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 40,679 | $15 |
| Jun 24, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 17,426 | $14 |
| Jun 24, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 101,579 | $14 |
| Jun 24, 2026 | FORMELA JEAN FRANCOIS · director | Sale | 3,382 | $14 |
| Jun 17, 2026 | Vincent Loic A · officer: Chief Scientific Officer | Sale | 3,418 | $11 |
| Jun 17, 2026 | Dolan Oliver · officer: Senior Vice President, Finance | Sale | 3,383 | $11 |
| Jun 17, 2026 | Cerio Jeffrey · officer: General Counsel | Sale | 6,609 | $11 |
| Jun 17, 2026 | Chappell Todd · officer: Chief Operating Officer | Sale | 3,168 | $11 |
| Jun 11, 2026 | Behbahani Ali · director | A-Award | 14,677 | $11 |
Institutional positioning
13F filings over the trailing two quarters
New 54Increased 80Reduced 42Sold out 11
| Filer | Action | Shares | Filed |
|---|---|---|---|
| Lynx1 Capital Management LP | Unchanged | 1,538,296 | Aug 13, 2026 |
| LYNX1 CAPITAL MANAGEMENT LP | Increased | 1,538,296 | May 4, 2026 |
| NEA Management Company, LLC | Unchanged | 1,297,893 | Aug 14, 2026 |
| NEA MANAGEMENT COMPANY, LLC | Increased | 1,297,893 | May 15, 2026 |
| ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC | Unchanged | 1,137,149 | May 14, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | New Position | 1,040,054 | May 15, 2026 |
| VR ADVISER, LLC | New Position | 1,009,500 | May 15, 2026 |
| VR Adviser, LLC | Unchanged | 1,009,500 | Aug 14, 2026 |
| Atlas Venture Life Science Advisors, LLC | Reduced | 962,884 | Aug 13, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | Reduced | 951,783 | Aug 14, 2026 |
| BlackRock, Inc. | Increased | 817,621 | Aug 7, 2026 |
| Affinity Asset Advisors, LLC | Unchanged | 706,904 | Aug 13, 2026 |
| AFFINITY ASSET ADVISORS, LLC | New Position | 706,904 | May 14, 2026 |
| NANTAHALA CAPITAL MANAGEMENT, LLC | Increased | 660,036 | May 15, 2026 |
| Nantahala Capital Management, LLC | Unchanged | 660,036 | Aug 19, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 28, 2026