Hack Andrew A. F. has filed 21 insider transactions across 2 companies since June 2023.
Most recent transaction: a disposition of 2200 shares of Mersana Therapeutics, Inc. ($MRSN) on January 06, 2026.
Activity breakdown: 0 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 2200 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.04% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 400 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.01% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 1000 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.02% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 368 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.01% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 118 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.00% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 1002 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.02% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 439 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.01% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 1800 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.04% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 734 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.01% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | U | Common Stock | 578 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.01% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | U | Common Stock | 346545 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 6.93% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 2460 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.05% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | D | Stock Option (right to buy) | 2088 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.04% |
| June 12, 2025 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | A | Stock Option (right to buy) | 61500 | $0.00 | 61,500.0000 | 124,631,339 | 9999.99% | 0.05% |
| Dec. 11, 2024 | Nuvalent, Inc. | $NUVL | Hack Andrew A. F. | Not found | S | Class A Common Stock | 1250000 | $88.00 | 1,449,766.0000 | 65,678,693 | 46.30% | 1.90% |
| June 12, 2024 | Nuvalent, Inc. | $NUVL | Hack Andrew A. F. | Not found | A | Class A Common Stock | 2499 | $0.00 | 2,699,766.0000 | 58,223,339 | 0.09% | 0.00% |
| June 12, 2024 | Nuvalent, Inc. | $NUVL | Hack Andrew A. F. | Not found | A | Stock Option (right to buy) | 3789 | $0.00 | 3,789.0000 | 58,223,339 | 9999.99% | 0.01% |
| June 11, 2024 | Mersana Therapeutics, Inc. | $MRSN | Hack Andrew A. F. | Not found | A | Stock Option (right to buy) | 55000 | $0.00 | 55,000.0000 | 0 | 9999.99% | 0.00% |
| March 27, 2024 | Nuvalent, Inc. | $NUVL | Hack Andrew A. F. | Not found | S | Class A Common Stock | 791795 | $72.31 | 2,697,267.0000 | 58,223,339 | 22.69% | 1.36% |
| March 27, 2024 | Nuvalent, Inc. | $NUVL | Hack Andrew A. F. | Not found | S | Class A Common Stock | 88205 | $76.88 | 3,489,062.0000 | 58,223,339 | 2.47% | 0.15% |
| June 15, 2023 | Nuvalent, Inc. | $NUVL | Hack Andrew A. F. | Not found | A | Stock Option (Right to Buy) | 15000 | $0.00 | 15,000.0000 | 49,668,864 | 9999.99% | 0.03% |