KROS
Keros Therapeutics, Inc.
NASDAQ · Healthcare · Biotechnology · US
$11.32
+1.89%3
Insider buys (3m)
7
Insider sells (3m)
-$131.9K
Net value (3m)
+9.2%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 20, 2026 | Tanini Annita · officer: Corp. Controller & VP, Finance | Sale | 1,224 | $10 |
| Aug 20, 2026 | Cho Esther · officer: Chief Legal Officer | Sale | 4,485 | $10 |
| Aug 20, 2026 | Lerner Lorena Raquel · officer: Chief Scientific Officer | Sale | 3,568 | $10 |
| Aug 20, 2026 | Newton Charles W. · director | Sale | 551 | $10 |
| Aug 19, 2026 | BIENAIME JEAN JACQUES · director | Purchase | 1,000 | $10 |
| Jul 17, 2026 | BIENAIME JEAN JACQUES · director | Purchase | 1,000 | $11 |
| Jul 6, 2026 | Prener Anne · director | A-Award | 13,786 | $0.00 |
| Jul 6, 2026 | Prener Anne · director | A-Award | 14,870 | $11 |
| Jun 17, 2026 | BIENAIME JEAN JACQUES · director | Purchase | 1,000 | $10 |
| Jun 15, 2026 | Newton Charles W. · director | Sale | 550 | $10 |
| Jun 8, 2026 | Farzan Nima · director | Sale | 2,625 | $11 |
| Jun 8, 2026 | Knowles Julius · director | Sale | 2,625 | $11 |
| Jun 5, 2026 | Knowles Julius · director | A-Award | 7,433 | $11 |
| Jun 5, 2026 | GRAY MARY ANN · director | A-Award | 7,433 | $11 |
| Jun 5, 2026 | BIENAIME JEAN JACQUES · director | A-Award | 7,433 | $11 |
| Jun 5, 2026 | Knowles Julius · director | A-Award | 7,142 | $0.00 |
| Jun 5, 2026 | Farzan Nima · director | A-Award | 7,142 | $0.00 |
| Jun 5, 2026 | Seth Alpna · director | A-Award | 7,433 | $11 |
| Jun 5, 2026 | Seth Alpna · director | A-Award | 7,142 | $0.00 |
| Jun 5, 2026 | Farzan Nima · director | A-Award | 7,433 | $11 |
| Jun 5, 2026 | Seth Alpna · director | Sale | 2,625 | $11 |
| Jun 5, 2026 | BIENAIME JEAN JACQUES · director | A-Award | 7,142 | $0.00 |
| Jun 5, 2026 | GRAY MARY ANN · director | A-Award | 7,142 | $0.00 |
| May 19, 2026 | BIENAIME JEAN JACQUES · director | Purchase | 1,000 | $11 |
| Apr 17, 2026 | BIENAIME JEAN JACQUES · director | Purchase | 1,000 | $12 |
| Apr 6, 2026 | Seehra Jasbir · director, officer: CHIEF EXECUTIVE OFFICER | M-Exempt | 55,000 | $0.30 |
| Mar 27, 2026 | Cho Esther · officer: Chief Legal Officer | A-Award | 80,000 | $16 |
| Mar 11, 2026 | BIENAIME JEAN JACQUES · director | Purchase | 2,000 | $11 |
| Mar 11, 2026 | Newton Charles W. · director | A-Award | 14,788 | $11 |
| Mar 11, 2026 | Newton Charles W. · director | A-Award | 13,215 | $0.00 |
Institutional positioning
13F filings over the trailing two quarters
New 27Increased 49Reduced 57Sold out 146
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 2,411,793 | May 13, 2026 |
| NANTAHALA CAPITAL MANAGEMENT, LLC | Increased | 1,360,419 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 831,421 | May 15, 2026 |
| ORBIMED ADVISORS LLC | Reduced | 759,155 | May 15, 2026 |
| QUBE RESEARCH & TECHNOLOGIES LTD | Reduced | 724,926 | May 15, 2026 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | 706,071 | May 15, 2026 |
| FEDERATED HERMES, INC. | Increased | 689,229 | May 11, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 682,043 | May 8, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 681,460 | May 15, 2026 |
| MADISON AVENUE PARTNERS, LP | Reduced | 626,583 | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 590,517 | Mar 25, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 590,249 | May 14, 2026 |
| STATE STREET CORP | Reduced | 561,730 | May 15, 2026 |
| CITADEL ADVISORS LLC | Reduced | 553,766 | May 15, 2026 |
| D. E. SHAW & CO., INC. | Reduced | 509,608 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 20, 2026