DeSchuytner Brian (CIK 1782163) reported 8 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-01-06). Recent activity: Sell MRSN (5,015 shares), Buy MRSN (6,250 shares), Buy MRSN (14,583 shares), Sell MRSN (8,470 shares), Buy MRSN (6,250 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-01-06 | Mersana Therapeutics, Inc. (MRSN) | SVP, COO & CFO | Sell | 5,015 | $0 |
| 2025-01-17 | Mersana Therapeutics, Inc. (MRSN) | SVP, COO & CFO | Buy | 6,250 | $0 |
| 2025-01-17 | Mersana Therapeutics, Inc. (MRSN) | SVP, COO & CFO | Buy | 14,583 | $0 |
| 2025-01-17 | Mersana Therapeutics, Inc. (MRSN) | SVP, COO & CFO | Sell | 8,470 | $4,913 |
| 2025-01-16 | Mersana Therapeutics, Inc. (MRSN) | SVP, COO & CFO | Buy | 6,250 | $0 |
| 2025-01-16 | Mersana Therapeutics, Inc. (MRSN) | SVP, COO & CFO | Sell | 2,331 | $1,469 |
| 2025-01-15 | Mersana Therapeutics, Inc. (MRSN) | SVP, COO & CFO | Buy | 10,000 | $0 |
| 2025-01-15 | Mersana Therapeutics, Inc. (MRSN) | SVP, COO & CFO | Sell | 3,713 | $2,451 |
Source: SEC Form 4 filings · as of 2026-01-06