ADAR1 Capital Management, LLC has filed 23 insider transactions across 2 companies since August 2024.
Most recent transaction: a sale of 743358 shares of Keros Therapeutics, Inc. ($KROS) on October 15, 2025.
Activity breakdown: 8 open-market purchases and 3 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct. 15, 2025 | Keros Therapeutics, Inc. | $KROS | ADAR1 Capital Management, LLC | TenPercentOwner | S | Common Stock | 743358 | $17.75 | 0.0000 | 41,202,371 | 100.00% | 1.80% |
| Oct. 15, 2025 | Keros Therapeutics, Inc. | $KROS | ADAR1 Capital Management, LLC | TenPercentOwner | S | Common Stock | 254669 | $17.75 | 0.0000 | 41,202,371 | 100.00% | 0.62% |
| Oct. 15, 2025 | Keros Therapeutics, Inc. | $KROS | ADAR1 Capital Management, LLC | TenPercentOwner | S | Common Stock | 4391237 | $17.75 | 0.0000 | 41,202,371 | 100.00% | 10.66% |
| June 20, 2025 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | ADAR1 Capital Management, LLC | TenPercentOwner | X | Put Option (right to sell) | 1 | $0.00 | 0.0000 | 37,437,652 | 100.00% | 0.00% |
| June 20, 2025 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | ADAR1 Capital Management, LLC | TenPercentOwner | X | Put Option (right to sell) | 2 | $0.00 | 0.0000 | 37,437,652 | 100.00% | 0.00% |
| May 16, 2025 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | ADAR1 Capital Management, LLC | TenPercentOwner | E | Put Option (obligation to buy) | 836 | $0.00 | 0.0000 | 37,437,652 | 100.00% | 0.00% |
| April 9, 2025 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | ADAR1 Capital Management, LLC | TenPercentOwner | P | Common Stock | 16365 | $9.40 | 5,390,964.0000 | 37,437,652 | 0.30% | 0.04% |
| April 9, 2025 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | 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 | Keros Therapeutics, Inc. | $KROS | ADAR1 Capital Management, LLC | TenPercentOwner | J | Cash Settled Total Return Swaps | 74333 | $0.00 | 50,000.0000 | 37,437,652 | 59.79% | 0.20% |
| Aug. 9, 2024 | PALVELLA THERAPEUTICS, INC. | $PVLA | ADAR1 Capital Management, LLC | TenPercentOwner | P | Common Stock | 3000 | $14.89 | 142,398.0000 | 0 | 2.15% | 0.00% |
| Aug. 12, 2024 | PALVELLA THERAPEUTICS, INC. | $PVLA | ADAR1 Capital Management, LLC | TenPercentOwner | P | Common Stock | 757 | $15.88 | 144,641.0000 | 0 | 0.53% | 0.00% |
| Aug. 12, 2024 | PALVELLA THERAPEUTICS, INC. | $PVLA | ADAR1 Capital Management, LLC | TenPercentOwner | P | Common Stock | 2243 | $15.88 | 144,641.0000 | 0 | 1.58% | 0.00% |