Keros Therapeutics's top three insider shareholders as of April 17, 2026 are Management 4 G.P. (2015) Ltd. Pontifax (TenPercentOwner, 1.23Mn shares), Ran Nussbaum (Director, 1.23Mn shares), Management 4 G.P. (2015) Ltd. Pontifax (TenPercentOwner, 1.23Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Management 4 G.P. (2015) Ltd. Pontifax | - | 0 | 1,226,412 | 30 Nov, 2022 |
| Tomer Kariv | - | 0 | 1,226,412 | 30 Nov, 2022 |
| Ran Nussbaum | - | 0 | 1,226,412 | 30 Nov, 2022 |
| Ran Nussbaum | - | 0 | 1,226,412 | 30 Nov, 2022 |
| Management 4 G.P. (2015) Ltd. Pontifax | - | 0 | 1,226,412 | 30 Nov, 2022 |
| Jasbir Seehra | Chief Executive Officer | 440,708 | 0 | 06 Apr, 2026 |
| Julius Knowles | - | 0 | 102,233 | 18 Dec, 2025 |
| Julius Knowles | - | 0 | 102,233 | 18 Dec, 2025 |
| Jennifer Lachey | Chief Scientific Officer | 95,100 | 0 | 19 Jul, 2022 |
| Jennifer Lachey | Chief Scientific Officer | 95,100 | 0 | 19 Jul, 2022 |
| Christopher Rovaldi | Chief Operating Officer | 60,000 | 0 | 19 Feb, 2025 |
| Christopher Rovaldi | Chief Operating Officer | 60,000 | 0 | 19 Feb, 2025 |
| Carl L Gordon | - | 0 | 45,057 | 18 Dec, 2025 |
| Yung H. Chyung | Chief Medical Officer | 44,000 | 0 | 19 Feb, 2025 |
| Esther Cho | Svp, General Counsel | 39,755 | 0 | 20 Feb, 2026 |
| Keith Regnante | Chief Financial Officer | 39,261 | 0 | 20 Feb, 2026 |
| Lorena Raquel Lerner | Chief Science Officer | 31,127 | 0 | 20 Feb, 2026 |
| Lorena Raquel Lerner | Chief Science Officer | 31,127 | 0 | 20 Feb, 2026 |
| Charles W. Newton | - | 13,215 | 0 | 11 Mar, 2026 |
| Charles W. Newton | - | 13,215 | 0 | 11 Mar, 2026 |
| Jean Jacques Bienaime | - | 7,450 | 0 | 11 Mar, 2026 |
| Julius Knowles | - | 6,441 | 0 | 06 Jun, 2025 |
| Julius Knowles | - | 6,441 | 0 | 06 Jun, 2025 |
| Nima Farzan | - | 5,250 | 0 | 06 Jun, 2025 |
| Alpna Seth | - | 5,250 | 0 | 06 Jun, 2025 |
| Alpna Seth | - | 5,250 | 0 | 06 Jun, 2025 |
| Ran Nussbaum | - | 5,250 | 0 | 06 Jun, 2025 |
| Tomer Kariv | - | 5,250 | 0 | 06 Jun, 2025 |
| Carl L Gordon | - | 5,250 | 0 | 06 Jun, 2025 |
| Mary Ann Gray | - | 5,250 | 0 | 06 Jun, 2025 |
| Ran Nussbaum | - | 5,250 | 0 | 06 Jun, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 02 Apr, 2026 | Jasbir Seehra | Common Stock | A | 55,000 | $0.30 | 440,708 | D | M |
| 02 Apr, 2026 | Jasbir Seehra | Employee Stock Option (Right to Buy) | D | 55,000 | $0.00 | 197,444 | D | M |
| 24 Feb, 2026 | Esther Cho | Employee Stock Option (Right to Buy) | A | 80,000 | $0.00 | 80,000 | D | A |
| 09 Mar, 2026 | Charles W. Newton | Common Stock | A | 13,215 | $0.00 | 13,215 | D | A |
| 09 Mar, 2026 | Jean Jacques Bienaime | Common Stock | A | 2,000 | $11.21 | 7,450 | D | P |
| 09 Mar, 2026 | Charles W. Newton | Stock Option (Right to Buy) | A | 14,788 | $0.00 | 14,788 | D | A |
| 24 Feb, 2026 | Jasbir Seehra | Employee Stock Option (Right to Buy) | A | 217,000 | $0.00 | 217,000 | D | A |
| 24 Feb, 2026 | Esther Cho | Employee Stock Option (Right to Buy) | A | 80,000 | $0.00 | 80,000 | D | A |
| 24 Feb, 2026 | Lorena Raquel Lerner | Employee Stock Option (Right to Buy) | A | 75,000 | $0.00 | 75,000 | D | A |
| 24 Feb, 2026 | Jasbir Seehra | Employee Stock Option (right to buy) | A | 100,000 | $0.00 | 100,000 | D | A |
| 18 Feb, 2026 | Esther Cho | Common Stock | D | 4,745 | $16.35 | 39,755 | D | S |
| 19 Feb, 2026 | Jasbir Seehra | Common Stock | D | 7,015 | $16.17 | 385,708 | D | S |
| 18 Feb, 2026 | Lorena Raquel Lerner | Common Stock | D | 3,873 | $16.35 | 31,127 | D | S |
| 07 Jan, 2026 | Jasbir Seehra | Employee Stock Option (right to buy) | A | 62,500 | $0.00 | 62,500 | D | A |
| 21 Nov, 2025 | Julius Knowles | Common Stock | D | 191,527 | $17.75 | 150,047 | I | D |
| 21 Nov, 2025 | Advisors Llc Orbimed | Common Stock | D | 140,057 | $17.75 | 759,155 | I | D |
| 21 Nov, 2025 | Carl L Gordon | Common Stock | D | 140,057 | $17.75 | 759,155 | I | D |
| 21 Nov, 2025 | Julius Knowles | Common Stock | D | 130,494 | $17.75 | 102,233 | I | D |
| 21 Nov, 2025 | Advisors Llc Orbimed | Common Stock | D | 74,465 | $17.75 | 45,057 | I | D |
| 21 Nov, 2025 | Carl L Gordon | Common Stock | D | 74,465 | $17.75 | 45,057 | I | D |