In the last 12 months, insiders at Keros Therapeutics, Inc. ($KROS) filed 113 transactions with the SEC: 7 open-market purchases totaling $9,511,919 and 22 sales totaling $208,458,820. Net insider sentiment: net selling.
Keros Therapeutics, Inc. operates in the Pharmaceutical preparations industry (Life sciences sector).
Most Active Insiders
- ADAR1 Capital Management, LLC (TenPercentOwner) — 20 transactions totaling $105,241,948
- Pontifax Management 4 G.P. (2015) Ltd. (TenPercentOwner) — 4 transactions totaling $84,975,125
- GORDON CARL L (Director) — 5 transactions totaling $14,810,266
- ORBIMED ADVISORS LLC (Director) — 4 transactions totaling $14,810,266
- Knowles Julius (Not found) — 5 transactions totaling $5,715,873
View all SEC Filings for Keros Therapeutics, Inc. (KROS).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 24, 2026 | Cho Esther | Chief Legal Officer | A | Employee Stock Option (Right to Buy) | 80000 | $0.00 | 80,000.0000 | 41,202,371 | 9999.99% | 0.19% |
| March 9, 2026 | BIENAIME JEAN JACQUES | Not found | P | Common Stock | 2000 | $11.21 | 7,450.0000 | 41,202,371 | 36.70% | 0.00% |
| March 9, 2026 | Newton Charles W. | Not found | A | Common Stock | 13215 | $0.00 | 13,215.0000 | 41,202,371 | 9999.99% | 0.03% |
| March 9, 2026 | Newton Charles W. | Not found | A | Stock Option (Right to Buy) | 14788 | $0.00 | 14,788.0000 | 41,202,371 | 9999.99% | 0.04% |
| Feb. 24, 2026 | Regnante Keith | CHIEF FINANCIAL OFFICER | A | Employee Stock Option (Right to Buy) | 60000 | $0.00 | 60,000.0000 | 41,202,371 | 9999.99% | 0.15% |
| Feb. 24, 2026 | Cho Esther | Chief Legal Officer | A | Employee Stock Option (Right to Buy) | 80000 | $0.00 | 80,000.0000 | 41,202,371 | 9999.99% | 0.19% |
| Feb. 24, 2026 | Lerner Lorena Raquel | Chief Scientific Officer | A | Employee Stock Option (Right to Buy) | 75000 | $0.00 | 75,000.0000 | 41,202,371 | 9999.99% | 0.18% |
| Feb. 24, 2026 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | A | Employee Stock Option (Right to Buy) | 217000 | $0.00 | 217,000.0000 | 41,202,371 | 9999.99% | 0.53% |
| Feb. 24, 2026 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | A | Employee Stock Option (right to buy) | 100000 | $0.00 | 100,000.0000 | 41,202,371 | 9999.99% | 0.24% |
| Feb. 18, 2026 | Regnante Keith | CHIEF FINANCIAL OFFICER | S | Common Stock | 4739 | $16.35 | 39,261.0000 | 41,202,371 | 10.77% | 0.01% |
| Feb. 18, 2026 | Lerner Lorena Raquel | Chief Science Officer | S | Common Stock | 3873 | $16.35 | 31,127.0000 | 41,202,371 | 11.07% | 0.01% |
| Feb. 18, 2026 | Cho Esther | SVP, General Counsel | S | Common Stock | 4745 | $16.35 | 39,755.0000 | 41,202,371 | 10.66% | 0.01% |
| Feb. 19, 2026 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | S | Common Stock | 7015 | $16.17 | 385,708.0000 | 41,202,371 | 1.79% | 0.02% |
| Jan. 7, 2026 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | A | Employee Stock Option (right to buy) | 62500 | $0.00 | 62,500.0000 | 41,202,371 | 9999.99% | 0.15% |
| Nov. 21, 2025 | Knowles Julius | Not found | D | Common Stock | 191527 | $17.75 | 156,488.0000 | 41,202,371 | 55.03% | 0.46% |
| Nov. 21, 2025 | Knowles Julius | Not found | D | Common Stock | 130494 | $17.75 | 108,674.0000 | 41,202,371 | 54.56% | 0.32% |
| Nov. 21, 2025 | ORBIMED ADVISORS LLC | Director | D | Common Stock | 140057 | $17.75 | 759,155.0000 | 41,202,371 | 15.58% | 0.34% |
| Nov. 21, 2025 | GORDON CARL L | Director | D | Common Stock | 140057 | $17.75 | 759,155.0000 | 41,202,371 | 15.58% | 0.34% |
| Nov. 21, 2025 | ORBIMED ADVISORS LLC | Director | D | Common Stock | 74465 | $17.75 | 45,057.0000 | 41,202,371 | 62.30% | 0.18% |
| Nov. 21, 2025 | GORDON CARL L | Director | D | Common Stock | 74465 | $17.75 | 45,057.0000 | 41,202,371 | 62.30% | 0.18% |
| Oct. 15, 2025 | Pontifax Management 4 G.P. (2015) Ltd. | TenPercentOwner | S | Common Stock, $0.0001 par value per share | 1121045 | $17.75 | 10,500.0000 | 41,202,371 | 99.07% | 2.72% |
| Oct. 15, 2025 | Pontifax Management 4 G.P. (2015) Ltd. | TenPercentOwner | S | Common Stock, $0.0001 par value per share | 2284612 | $17.75 | 10,500.0000 | 41,202,371 | 99.54% | 5.54% |
| Oct. 15, 2025 | Pontifax Management 4 G.P. (2015) Ltd. | TenPercentOwner | S | Common Stock, $0.0001 par value per share | 1226412 | $17.75 | 10,500.0000 | 41,202,371 | 99.15% | 2.98% |
| Oct. 15, 2025 | Pontifax Management 4 G.P. (2015) Ltd. | TenPercentOwner | S | Common Stock, $0.0001 par value per share | 155262 | $17.75 | 10,500.0000 | 41,202,371 | 93.67% | 0.38% |
| Oct. 15, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | S | Common Stock | 254669 | $17.75 | 0.0000 | 41,202,371 | 100.00% | 0.62% |
| Oct. 15, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | S | Common Stock | 4391237 | $17.75 | 0.0000 | 41,202,371 | 100.00% | 10.66% |
| Oct. 15, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | S | Common Stock | 743358 | $17.75 | 0.0000 | 41,202,371 | 100.00% | 1.80% |
| Sept. 3, 2025 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | A | Common Stock | 90500 | $0.00 | 392,723.0000 | 37,437,652 | 29.94% | 0.24% |
| June 20, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | X | Common Stock | 100 | $60.00 | 5,135,995.0000 | 37,437,652 | 0.00% | 0.00% |
| June 20, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | X | Common Stock | 200 | $70.00 | 5,134,595.0000 | 37,437,652 | 0.00% | 0.00% |
| June 20, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | X | Common Stock | 1400 | $70.00 | 5,134,595.0000 | 37,437,652 | 0.03% | 0.00% |
| June 20, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | X | Put Option (right to sell) | 14 | $0.00 | 0.0000 | 37,437,652 | 100.00% | 0.00% |
| June 20, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | X | Put Option (right to sell) | 2 | $0.00 | 0.0000 | 37,437,652 | 100.00% | 0.00% |
| June 20, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | X | Put Option (right to sell) | 1 | $0.00 | 0.0000 | 37,437,652 | 100.00% | 0.00% |
| May 16, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | E | Put Option (obligation to buy) | 178 | $0.00 | 0.0000 | 37,437,652 | 100.00% | 0.00% |
| May 16, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | E | Put Option (obligation to buy) | 300 | $0.00 | 0.0000 | 37,437,652 | 100.00% | 0.00% |
| May 16, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | E | Put Option (obligation to buy) | 836 | $0.00 | 0.0000 | 37,437,652 | 100.00% | 0.00% |
| June 4, 2025 | Knowles Julius | Not found | A | Common Stock | 5250 | $0.00 | 580,742.0000 | 37,437,652 | 0.91% | 0.01% |
| June 4, 2025 | BIENAIME JEAN JACQUES | Not found | A | Stock Option (right to buy) | 10500 | $0.00 | 10,500.0000 | 37,437,652 | 9999.99% | 0.03% |
| June 4, 2025 | BIENAIME JEAN JACQUES | Not found | A | Common Stock | 5250 | $0.00 | 5,450.0000 | 37,437,652 | 2625.00% | 0.01% |
| June 4, 2025 | GRAY MARY ANN | Not found | A | Stock Option (right to buy) | 10500 | $0.00 | 10,500.0000 | 37,437,652 | 9999.99% | 0.03% |
| June 4, 2025 | GRAY MARY ANN | Not found | A | Common Stock | 5250 | $0.00 | 5,250.0000 | 37,437,652 | 9999.99% | 0.01% |
| June 4, 2025 | Seth Alpna | Not found | A | Stock Option (right to buy) | 10500 | $0.00 | 10,500.0000 | 37,437,652 | 9999.99% | 0.03% |
| June 4, 2025 | Seth Alpna | Not found | A | Common Stock | 5250 | $0.00 | 5,250.0000 | 37,437,652 | 9999.99% | 0.01% |
| June 4, 2025 | Nussbaum Ran | Not found | A | Stock Option (right to buy) | 10500 | $0.00 | 10,500.0000 | 37,437,652 | 9999.99% | 0.03% |
| June 4, 2025 | Nussbaum Ran | Not found | A | Common Stock | 5250 | $0.00 | 4,637,319.0000 | 37,437,652 | 0.11% | 0.01% |
| June 4, 2025 | Farzan Nima | Not found | A | Stock Option (right to buy) | 10500 | $0.00 | 10,500.0000 | 37,437,652 | 9999.99% | 0.03% |
| June 4, 2025 | Farzan Nima | Not found | A | Common Stock | 5250 | $0.00 | 5,250.0000 | 37,437,652 | 9999.99% | 0.01% |
| June 4, 2025 | Kariv Tomer | Not found | A | Stock Option (right to buy) | 10500 | $0.00 | 10,500.0000 | 37,437,652 | 9999.99% | 0.03% |
| June 4, 2025 | Kariv Tomer | Not found | A | Common Stock | 5250 | $0.00 | 4,637,319.0000 | 37,437,652 | 0.11% | 0.01% |
| June 4, 2025 | GORDON CARL L | Not found | A | Stock Option (right to buy) | 10500 | $0.00 | 10,500.0000 | 37,437,652 | 9999.99% | 0.03% |
| June 4, 2025 | GORDON CARL L | Not found | A | Common Stock | 5250 | $0.00 | 1,023,984.0000 | 37,437,652 | 0.52% | 0.01% |
| June 4, 2025 | Knowles Julius | Not found | A | Stock Option (right to buy) | 10500 | $0.00 | 10,500.0000 | 37,437,652 | 9999.99% | 0.03% |
| April 9, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | P | Common Stock | 18560 | $9.40 | 4,491,631.0000 | 37,437,652 | 0.41% | 0.05% |
| April 9, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | J | Cash Settled Total Return Swaps | 74333 | $0.00 | 50,000.0000 | 37,437,652 | 59.79% | 0.20% |
| April 9, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | J | Cash-Settled Total Return Swaps | 500000 | $0.00 | 124,333.0000 | 37,437,652 | 80.09% | 1.34% |
| April 9, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | J | Cash-Settled Total Return Swaps | 325000 | $0.00 | 624,333.0000 | 37,437,652 | 34.23% | 0.87% |
| April 9, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | P | Common Stock | 74333 | $10.33 | 5,390,964.0000 | 37,437,652 | 1.40% | 0.20% |
| April 9, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | P | Common Stock | 500000 | $10.33 | 5,316,631.0000 | 37,437,652 | 10.38% | 1.34% |
| April 9, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | P | Common Stock | 325000 | $9.86 | 4,816,631.0000 | 37,437,652 | 7.24% | 0.87% |
| April 9, 2025 | ADAR1 Capital Management, LLC | TenPercentOwner | P | Common Stock | 16365 | $9.40 | 5,390,964.0000 | 37,437,652 | 0.30% | 0.04% |
| April 4, 2025 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | M | Common Stock | 49367 | $0.30 | 302,223.0000 | 37,437,652 | 19.52% | 0.13% |
| April 4, 2025 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | M | Employee Stock Option (right to buy) | 49367 | $0.00 | 252,444.0000 | 37,437,652 | 16.36% | 0.13% |
| Feb. 18, 2025 | CHYUNG YUNG H. | Chief Medical Officer | A | Common Stock | 44000 | $0.00 | 44,000.0000 | 37,437,652 | 9999.99% | 0.12% |
| Feb. 18, 2025 | Rovaldi Christopher | Chief Operating Officer | A | Common Stock | 60000 | $0.00 | 60,000.0000 | 37,437,652 | 9999.99% | 0.16% |
| Feb. 18, 2025 | Regnante Keith | CHIEF FINANCIAL OFFICER | A | Common Stock | 44000 | $0.00 | 44,000.0000 | 37,437,652 | 9999.99% | 0.12% |
| Jan. 4, 2024 | Regnante Keith | CHIEF FINANCIAL OFFICER | S | Common Stock | 40000 | $45.29 | 0.0000 | 29,447,119 | 100.00% | 0.14% |
| Jan. 4, 2024 | Regnante Keith | CHIEF FINANCIAL OFFICER | M | Common Stock | 40000 | $16.00 | 40,000.0000 | 29,447,119 | 9999.99% | 0.14% |
| Nov. 8, 2024 | CHYUNG YUNG H. | Chief Medical Officer | A | Employee Stock Option (right to buy) | 110000 | $0.00 | 110,000.0000 | 37,590,727 | 9999.99% | 0.29% |
| Aug. 13, 2024 | ORBIMED ADVISORS LLC | Director | S | Common Stock | 29400 | $44.01 | 119,522.0000 | 29,447,119 | 19.74% | 0.10% |
| Aug. 13, 2024 | GORDON CARL L | Director | S | Common Stock | 220600 | $44.01 | 899,212.0000 | 29,447,119 | 19.70% | 0.75% |
| Aug. 13, 2024 | GORDON CARL L | Director | S | Common Stock | 29400 | $44.01 | 119,522.0000 | 29,447,119 | 19.74% | 0.10% |
| Aug. 13, 2024 | ORBIMED ADVISORS LLC | Director | S | Common Stock | 220600 | $44.01 | 899,212.0000 | 29,447,119 | 19.70% | 0.75% |
| June 3, 2024 | BIENAIME JEAN JACQUES | Not found | A | Stock Option (right to buy) | 17600 | $0.00 | 17,600.0000 | 29,447,119 | 9999.99% | 0.06% |
| May 30, 2024 | Farzan Nima | Not found | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 29,447,119 | 9999.99% | 0.03% |
| May 30, 2024 | Seth Alpna | Not found | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 29,447,119 | 9999.99% | 0.03% |
| May 30, 2024 | GORDON CARL L | Not found | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 29,447,119 | 9999.99% | 0.03% |
| May 30, 2024 | Kariv Tomer | Not found | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 29,447,119 | 9999.99% | 0.03% |
| May 30, 2024 | Nussbaum Ran | Not found | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 29,447,119 | 9999.99% | 0.03% |
| May 30, 2024 | GRAY MARY ANN | Not found | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 29,447,119 | 9999.99% | 0.03% |
| May 30, 2024 | Knowles Julius | Not found | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 29,447,119 | 9999.99% | 0.03% |
| Feb. 23, 2024 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | A | Employee Stock Option (right to buy) | 125000 | $0.00 | 125,000.0000 | 29,447,119 | 9999.99% | 0.42% |
| Feb. 13, 2024 | Cooper Simon Peter | CHIEF MEDICAL OFFICER | A | Employee Stock Option (right to buy) | 40000 | $0.00 | 40,000.0000 | 29,447,119 | 9999.99% | 0.14% |
| Feb. 13, 2024 | Rovaldi Christopher | CHIEF OPERATING OFFICER | A | Employee Stock Option (right to buy) | 150000 | $0.00 | 150,000.0000 | 29,447,119 | 9999.99% | 0.51% |
| Feb. 13, 2024 | Regnante Keith | CHIEF FINANCIAL OFFICER | A | Employee Stock Option (right to buy) | 40000 | $0.00 | 40,000.0000 | 29,447,119 | 9999.99% | 0.14% |
| Feb. 13, 2024 | Seehra Jasbir | CHIEF EXECUTIVE OFFICER | A | Employee Stock Option (right to buy) | 125000 | $0.00 | 125,000.0000 | 29,447,119 | 9999.99% | 0.42% |
| Jan. 4, 2024 | Regnante Keith | Chief Financial Officer | M | Employee Stock Option (right to buy) | 40000 | $0.00 | 53,622.0000 | 29,447,119 | 42.73% | 0.14% |
| Nov. 4, 2023 | Regnante Keith | Chief Financial Officer | M | Common Stock | 40000 | $16.00 | 40,000.0000 | 25,241,030 | 9999.99% | 0.16% |
| Nov. 4, 2023 | Regnante Keith | Chief Financial Officer | S | Common Stock | 40000 | $45.29 | 0.0000 | 25,241,030 | 100.00% | 0.16% |
| June 9, 2023 | Regnante Keith | Chief Financial Officer | M | Common Stock | 20000 | $16.00 | 20,000.0000 | 25,241,030 | 9999.99% | 0.08% |
| June 9, 2023 | Regnante Keith | Chief Financial Officer | M | Employee Stock Option (right to buy) | 20000 | $0.00 | 93,622.0000 | 25,241,030 | 17.60% | 0.08% |
| June 8, 2023 | Regnante Keith | Chief Financial Officer | M | Employee Stock Option (right to buy) | 20000 | $0.00 | 113,622.0000 | 25,241,030 | 14.97% | 0.08% |
| June 9, 2023 | Regnante Keith | Chief Financial Officer | S | Common Stock | 2579 | $47.25 | 0.0000 | 25,241,030 | 100.00% | 0.01% |
| June 9, 2023 | Regnante Keith | Chief Financial Officer | S | Common Stock | 1428 | $46.46 | 2,579.0000 | 25,241,030 | 35.64% | 0.01% |
| June 9, 2023 | Regnante Keith | Chief Financial Officer | S | Common Stock | 15993 | $45.03 | 4,007.0000 | 25,241,030 | 79.97% | 0.06% |
| June 8, 2023 | Regnante Keith | Chief Financial Officer | S | Common Stock | 2699 | $48.65 | 0.0000 | 25,241,030 | 100.00% | 0.01% |
| June 8, 2023 | Regnante Keith | Chief Financial Officer | S | Common Stock | 17301 | $47.66 | 2,699.0000 | 25,241,030 | 86.51% | 0.07% |
| June 8, 2023 | Regnante Keith | Chief Financial Officer | M | Common Stock | 20000 | $16.00 | 20,000.0000 | 25,241,030 | 9999.99% | 0.08% |
| June 6, 2023 | GORDON CARL L | Director | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 25,241,030 | 9999.99% | 0.04% |
| June 6, 2023 | Farzan Nima | Director | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 25,241,030 | 9999.99% | 0.04% |
| June 6, 2023 | GRAY MARY ANN | Director | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 25,241,030 | 9999.99% | 0.04% |
| June 6, 2023 | Knowles Julius | Director | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 25,241,030 | 9999.99% | 0.04% |
| June 6, 2023 | Nussbaum Ran | Director | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 25,241,030 | 9999.99% | 0.04% |
| June 6, 2023 | Kariv Tomer | Director | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 25,241,030 | 9999.99% | 0.04% |
| June 6, 2023 | Seth Alpna | Director | A | Stock Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 25,241,030 | 9999.99% | 0.04% |
| May 1, 2023 | Seth Alpna | Director | A | Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 25,241,030 | 9999.99% | 0.08% |
| April 8, 2023 | Seehra Jasbir | Chief Executive Officer | M | Common Stock | 4000 | $0.48 | 252,856.0000 | 25,241,030 | 1.61% | 0.02% |
| April 8, 2023 | Seehra Jasbir | Chief Executive Officer | M | Employee Stock Option (right to buy) | 4000 | $0.00 | 45,087.0000 | 25,241,030 | 8.15% | 0.02% |
| Feb. 16, 2023 | Seehra Jasbir | Chief Executive Officer | A | Employee Stock Option (right to buy) | 200000 | $0.00 | 200,000.0000 | 25,241,030 | 9999.99% | 0.79% |
| Feb. 16, 2023 | Regnante Keith | Chief Financial Officer | A | Employee Stock Option (right to buy) | 40000 | $0.00 | 40,000.0000 | 25,241,030 | 9999.99% | 0.16% |
| Feb. 16, 2023 | Cooper Simon Peter | Chief Medical Officer | A | Employee Stock Option (right to buy) | 40000 | $0.00 | 40,000.0000 | 25,241,030 | 9999.99% | 0.16% |
| Feb. 16, 2023 | Rovaldi Christopher | Chief Operating Officer | A | Employee Stock Option (right to buy) | 100000 | $0.00 | 100,000.0000 | 25,241,030 | 9999.99% | 0.40% |
| April 13, 2020 | Knowles Julius | Director | P | Common Stock | 1191 | $20.98 | 575,492.0000 | 0 | 0.21% | 0.00% |