Mersana Therapeutics, Inc. (MRSN) has 51 open-market insider trades by 21 insiders since 2017. The most active filer is Andrew A. F. Hack, Director.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Andrew A. F. Hack | Dir | — | 10 | $60.5M | 2026-01-06 |
| David M. Mott | Dir | — | 3 | $36.0M | 2026-01-06 |
| Peter J. Barris | 10% Owner | — | 2 | $30.0M | 2019-03-05 |
| Peter J. Barris | 10% | — | 2 | $30.0M | 2019-03-05 |
| Forest Baskett | 10% Owner | — | 3 | $15.2M | 2020-09-14 |
| Scott D. Sandell | 10% Owner | — | 4 | $15.2M | 2020-09-14 |
| Anthony A. Florence Jr. | 10% Owner | — | 2 | $15.2M | 2020-09-14 |
| Peter W. Sonsini | 10% Owner | — | 1 | $15.0M | 2020-09-14 |
| M. James Barrett | 10% Owner | — | 1 | $15.0M | 2017-07-03 |
| Ravi Viswanathan | 10% Owner | — | 1 | $15.0M | 2017-07-03 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Mohan Bala | SVP & Chief Development Officer | Sell | $762 | 2025-10-27 |
| Martin H. Huber Jr. | CEO & President | Sell | $15K | 2025-09-12 |
| Alejandra Carvajal | CLO & SVP | Sell | $3K | 2025-01-16 |
| Martin H. Huber Jr. | CEO & President | Sell | $3K | 2025-01-16 |
| Anna Protopapas | Director | Sell | $5K | 2025-01-16 |
| Ashish Mandelia | VP & Chief Accounting Officer | Sell | $2K |
Companies that share insiders with MRSN, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| 2025-01-16 |
| Mohan Bala | SVP & Chief Development Officer | Sell | $3K | 2025-01-16 |
| Timothy B. Lowinger | SVP & Chief Sci.&Tech. Officer | Sell | $5K | 2025-01-16 |
| Brian DeSchuytner | SVP & COO & CFO | Sell | $5K | 2025-01-16 |
| Timothy B. Lowinger | SVP & Chief Sci.&Tech. Officer | Sell | $1K | 2025-01-15 |
| Brian DeSchuytner | SVP & COO & CFO | Sell | $1K | 2025-01-15 |
| Ashish Mandelia | VP & Chief Accounting Officer | Sell | $1K | 2025-01-15 |
| Anna Protopapas | Director | Sell | $4K | 2025-01-15 |
| Alejandra Carvajal | CLO & SVP | Sell | $600 | 2025-01-15 |
| Timothy B. Lowinger | SVP & Chief Sci.&Tech. Officer | Sell | $2K | 2025-01-14 |