| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 2,500 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 1,750 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 800 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 250 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 9,422 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 1,077 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 6,381 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 818 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 4,218 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 281 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 4,172 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 327 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 2,671 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 178 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 5,590 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 4,009 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 7,734 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFODERIV | Jan 6 | D | 3,515 | — | — |
| Mersana Therapeutics, Inc. | MRSN | Brian DeSchuytnerCFO | Jan 6 | U | 5,015 | — | — |