Keros Therapeutics, Inc. (KROS) Insider Trading
Over the last 3 months, KROS insiders made 3 open-market buys and 8 sales, a net sale of -$160K (SEC Form 4). Over the last 6 months, 50 institutions increased and 56 reduced their position (13F).
Insider Activity
Sentiment
14/100
Buys (3m)
3
Sells (3m)
8
Net (3m)
-$160.1K
Insiders buying
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price -0.5%Institutions reducing (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 20, 2026 | Tanini Annitaofficer: Corp. Controller & VP, Finance | Sell | 1,224 | $10.29 |
| Aug 20, 2026 | Cho Estherofficer: Chief Legal Officer | Sell | 4,485 | $10.29 |
| Aug 20, 2026 | Lerner Lorena Raquelofficer: Chief Scientific Officer | Sell | 3,568 | $10.29 |
| Aug 20, 2026 | Newton Charles W.director | Sell | 551 | $10.30 |
| Aug 19, 2026 | BIENAIME JEAN JACQUESdirector | Buy | 1,000 | $10.27 |
| Jul 17, 2026 | BIENAIME JEAN JACQUESdirector | Buy | 1,000 | $10.61 |
| Jul 6, 2026 | Prener Annedirector | Grant | 13,786 | — |
| Jul 6, 2026 | Prener Annedirector | Grant | 14,870 | $10.88 |
| Jun 17, 2026 | BIENAIME JEAN JACQUESdirector | Buy | 1,000 | $10.19 |
| Jun 15, 2026 | Newton Charles W.director | Sell | 550 | $10.04 |
| Jun 8, 2026 | Farzan Nimadirector | Sell | 2,625 | $10.73 |
| Jun 8, 2026 | Knowles Juliusdirector | Sell | 2,625 | $10.73 |
| Jun 5, 2026 | Knowles Juliusdirector | Grant | 7,433 | $10.50 |
| Jun 5, 2026 | GRAY MARY ANNdirector | Grant | 7,433 | $10.50 |
| Jun 5, 2026 | BIENAIME JEAN JACQUESdirector | Grant | 7,433 | $10.50 |
| Jun 5, 2026 | Knowles Juliusdirector | Grant | 7,142 | — |
| Jun 5, 2026 | Farzan Nimadirector | Grant | 7,142 | — |
| Jun 5, 2026 | Seth Alpnadirector | Grant | 7,433 | $10.50 |
| Jun 5, 2026 | Seth Alpnadirector | Grant | 7,142 | — |
| Jun 5, 2026 | Farzan Nimadirector | Grant | 7,433 | $10.50 |
| Jun 5, 2026 | Seth Alpnadirector | Sell | 2,625 | $10.72 |
| Jun 5, 2026 | BIENAIME JEAN JACQUESdirector | Grant | 7,142 | — |
| Jun 5, 2026 | GRAY MARY ANNdirector | Grant | 7,142 | — |
| May 19, 2026 | BIENAIME JEAN JACQUESdirector | Buy | 1,000 | $10.58 |
| Apr 17, 2026 | BIENAIME JEAN JACQUESdirector | Buy | 1,000 | $11.70 |
| Apr 6, 2026 | Seehra Jasbirdirector, officer: CHIEF EXECUTIVE OFFICER | Option | 55,000 | $0.30 |
| Mar 27, 2026 | Cho Estherofficer: Chief Legal Officer | Grant | 80,000 | $15.52 |
| Mar 11, 2026 | BIENAIME JEAN JACQUESdirector | Buy | 2,000 | $11.21 |
| Mar 11, 2026 | Newton Charles W.director | Grant | 14,788 | $11.35 |
| Mar 11, 2026 | Newton Charles W.director | Grant | 13,215 | — |
Source: KROS SEC Form 4 filings, latest Aug 20, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their KROS positions over the last 6 months (SEC Form 13F).
Increased
50
New positions
27
Reduced
56
Sold out
148
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 2.4M | May 13, 2026 |
| NANTAHALA CAPITAL MANAGEMENT, LLC | Increased | 1.4M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 831K | May 15, 2026 |
| ORBIMED ADVISORS LLC | Reduced | 759K | May 15, 2026 |
| QUBE RESEARCH & TECHNOLOGIES LTD | Reduced | 725K | May 15, 2026 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | 706K | May 15, 2026 |
| FEDERATED HERMES, INC. | Increased | 689K | May 11, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 682K | May 8, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 681K | May 15, 2026 |
| MADISON AVENUE PARTNERS, LP | Reduced | 627K | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 591K | Mar 25, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 590K | May 14, 2026 |
| STATE STREET CORP | Reduced | 562K | May 15, 2026 |
| CITADEL ADVISORS LLC | Reduced | 554K | May 15, 2026 |
| D. E. SHAW & CO., INC. | Reduced | 510K | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.