Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2021-02-12 08:04 am Purchase | 2020-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | Avoro Capital Advisors LLC | 6,800,000 9.900% | 6,800,000 (New Position) | Filing History |
| 2021-02-11 5:08 pm Sale | 2020-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | BIOTECHNOLOGY VALUE FUND L P | 0 0.000% | -3,755,553 (Position Closed) | Filing History |
| 2021-02-04 09:51 am Purchase | 2020-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | WELLINGTON MANAGEMENT CO LLP | 4,653,066 6.790% | 3,686,164 (+381.23%) | Filing History |
| 2021-01-26 6:52 pm Purchase | 2020-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | BLACKROCK INC BLK | 7,987,812 11.700% | 850,072 (+11.91%) | Filing History |
| 2021-01-25 4:42 pm Purchase | 2021-01-15 | 13G | Mersana Therapeutics, Inc. MRSN | Sarissa Capital Management LP | 3,770,000 5.500% | 20,000 (+0.53%) | Filing History |
| 2021-01-12 5:19 pm Purchase | 2021-01-08 | 13D | Mersana Therapeutics, Inc. MRSN | Bain Capital Life Sciences Fund II L.P. | 3,294,423 4.800% | 222,857 (+7.26%) | Filing History |
| 2020-12-10 1:17 pm Sale | 2020-12-01 | 13D | Mersana Therapeutics, Inc. MRSN | New Enterprise Associates 14 L.P. | 0 0.000% | -3,961,232 (Position Closed) | Filing History |
| 2020-11-19 1:29 pm Sale | 2020-11-09 | 13D | Mersana Therapeutics, Inc. MRSN | New Enterprise Associates 14 L.P. | 3,961,232 5.800% | -2,001,882 (-33.57%) | Filing History |
| 2020-09-21 7:02 pm Sale | 2020-09-14 | 13D | Mersana Therapeutics, Inc. MRSN | New Enterprise Associates 14 L.P. | 5,963,114 8.700% | -1,998,798 (-25.10%) | Filing History |
| 2020-07-10 10:39 am Purchase | 2020-06-30 | 13G | Mersana Therapeutics, Inc. MRSN | BLACKROCK INC BLK | 7,137,740 10.700% | 4,672,421 (+189.53%) | Filing History |
| 2020-04-24 2:17 pm Sale | 2020-04-09 | 13D | Mersana Therapeutics, Inc. MRSN | New Enterprise Associates 14 L.P. | 7,961,912 12.900% | -3,941,160 (-33.11%) | Filing History |
| 2020-04-17 5:26 pm Purchase | 2020-04-07 | 13D | Mersana Therapeutics, Inc. MRSN | Bain Capital Life Sciences Fund II L.P. | 3,071,566 5.200% | 3,071,566 (New Position) | Filing History |