DeSchuytner Brian has filed 47 insider transactions across 1 company since January 2024.
Most recent transaction: a disposition of 2671 shares of Mersana Therapeutics, Inc. ($MRSN) on January 06, 2026.
Activity breakdown: 0 open-market purchases and 6 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 | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 2671 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.05% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 178 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.00% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 5590 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.11% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 4009 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.08% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 7734 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.15% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 3515 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.07% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | U | Common Stock | 5015 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.10% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Restricted Stock Units | 2500 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.05% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Restricted Stock Units | 1750 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.04% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Restricted Stock Units | 800 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.02% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Restricted Stock Units | 250 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.01% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 9422 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.19% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 1077 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.02% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 6381 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.13% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 818 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.02% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 4218 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.08% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 281 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.01% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 4172 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.08% |
| Jan. 6, 2026 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | D | Stock Option (right to buy) | 327 | $0.00 | 0.0000 | 4,998,750 | 100.00% | 0.01% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Common Stock | 6250 | $0.00 | 115,280.0000 | 0 | 5.73% | 0.00% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Common Stock | 14583 | $0.00 | 129,863.0000 | 0 | 12.65% | 0.00% |
| Jan. 16, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | S | Common Stock | 8470 | $0.58 | 121,393.0000 | 0 | 6.52% | 0.00% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Restricted Stock Unit | 6250 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Restricted Stock Unit | 14583 | $0.00 | 43,750.0000 | 0 | 25.00% | 0.00% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | A | Stock Option (Right to Buy) | 281250 | $0.00 | 281,250.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | A | Restricted Stock Unit | 62500 | $0.00 | 62,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 14, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Restricted Stock Unit | 6250 | $0.00 | 6,250.0000 | 0 | 50.00% | 0.00% |
| Jan. 14, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Common Stock | 6250 | $0.00 | 111,361.0000 | 0 | 5.95% | 0.00% |
| Jan. 15, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | S | Common Stock | 2331 | $0.63 | 109,030.0000 | 0 | 2.09% | 0.00% |
| Jan. 14, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | S | Common Stock | 3713 | $0.66 | 105,111.0000 | 0 | 3.41% | 0.00% |
| Jan. 13, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Restricted Stock Unit | 10000 | $0.00 | 20,000.0000 | 0 | 33.33% | 0.00% |
| Jan. 13, 2025 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Common Stock | 10000 | $0.00 | 108,824.0000 | 0 | 10.12% | 0.00% |
| Oct. 3, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | S | Common Stock | 5598 | $1.96 | 94,824.0000 | 0 | 5.57% | 0.00% |
| Oct. 1, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Common Stock | 50000 | $0.00 | 108,511.0000 | 0 | 85.45% | 0.00% |
| Oct. 2, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | S | Common Stock | 8089 | $2.00 | 100,422.0000 | 0 | 7.45% | 0.00% |
| Oct. 1, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Restricted Stock Unit | 50000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Jan. 15, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | A | Stock Option (Right to Buy) | 262500 | $0.00 | 262,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 13, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Common Stock | 10000 | $0.00 | 47,380.0000 | 0 | 26.75% | 0.00% |
| Jan. 15, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | A | Restricted Stock Unit | 58333 | $0.00 | 58,333.0000 | 0 | 9999.99% | 0.00% |
| Jan. 15, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Restricted Stock Unit | 3958 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Jan. 15, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Restricted Stock Unit | 6250 | $0.00 | 6,250.0000 | 0 | 50.00% | 0.00% |
| Jan. 14, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Restricted Stock Unit | 6250 | $0.00 | 12,500.0000 | 0 | 33.33% | 0.00% |
| Jan. 13, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Restricted Stock Unit | 10000 | $0.00 | 30,000.0000 | 0 | 25.00% | 0.00% |
| Jan. 16, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | S | Common Stock | 9327 | $2.71 | 54,511.0000 | 0 | 14.61% | 0.00% |
| Jan. 15, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Common Stock | 3958 | $0.00 | 63,838.0000 | 0 | 6.61% | 0.00% |
| Jan. 15, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Common Stock | 6250 | $0.00 | 59,880.0000 | 0 | 11.65% | 0.00% |
| Jan. 14, 2024 | Mersana Therapeutics, Inc. | $MRSN | DeSchuytner Brian | SVP, COO & CFO | M | Common Stock | 6250 | $0.00 | 55,630.0000 | 0 | 12.66% | 0.00% |