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 |
| 2024-05-17 08:26 am Purchase | 2024-05-14 | 13G | Mersana Therapeutics, Inc. MRSN | Nextech Crossover I GP S.a. r.l. | 249,954 5.100% | 249,954 (New Position) | Filing History |
| 2024-02-14 8:56 pm Purchase | 2023-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | Venrock Healthcare Capital Partners III, L.P. | 453,120 9.400% | 66,000 (+17.05%) | Filing History |
| 2024-02-14 8:43 pm Purchase | 2023-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | SilverArc Capital Management, LLC | 256,805 5.300% | 256,805 (New Position) | Filing History |
| 2024-02-14 6:55 pm Sale | 2023-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | ORBIMED ADVISORS LLC | 0 0.000% | -283,313 (Position Closed) | Filing History |
| 2024-02-14 09:20 am Sale | 2023-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | Avoro Capital Advisors LLC | 0 0.000% | -302,000 (Position Closed) | Filing History |
| 2024-02-14 07:22 am Purchase | 2023-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | Balyasny Asset Management L.P. | 387,926 8.040% | 387,926 (New Position) | Filing History |
| 2024-02-13 5:09 pm Purchase | 2023-12-29 | 13G | Mersana Therapeutics, Inc. MRSN | The Vanguard Group | 249,504 5.170% | 71,542 (+40.20%) | Filing History |
| 2024-01-29 3:26 pm Purchase | 2023-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | BlackRock Inc. BLK | 313,771 6.500% | 14,094 (+4.70%) | Filing History |
| 2024-01-22 1:36 pm Sale | 2023-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | STATE STREET CORP STT | 93,177 1.930% | -141,065 (-60.22%) | Filing History |
| 2023-08-07 4:15 pm Purchase | 2023-07-28 | 13G | Mersana Therapeutics, Inc. MRSN | Venrock Healthcare Capital Partners III, L.P. | 387,120 8.500% | 387,120 (New Position) | Filing History |
| 2023-07-27 5:11 pm Purchase | 2023-07-27 | 13G | Mersana Therapeutics, Inc. MRSN | EcoR1 Capital, LLC | 774,588 16.900% | 774,588 (New Position) | Filing History |
| 2023-02-14 4:43 pm Purchase | 2022-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | ORBIMED ADVISORS LLC | 283,313 7.100% | 283,313 (New Position) | Filing History |
| 2023-02-14 4:18 pm Sale | 2022-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | BB BIOTECH AG | 162,648 4.100% | -2,752 (-1.66%) | Filing History |
| 2023-02-14 09:38 am Purchase | 2022-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | Avoro Capital Advisors LLC | 302,000 7.600% | 30,000 (+11.03%) | Filing History |
| 2023-02-13 6:04 pm Sale | 2022-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | Rho Ventures V L.P. | 24,169 0.600% | -29,079 (-54.61%) | Filing History |
| 2023-02-09 11:27 am Purchase | 2022-12-30 | 13G | Mersana Therapeutics, Inc. MRSN | The Vanguard Group | 177,962 4.460% | 33,664 (+23.33%) | Filing History |
| 2023-02-06 2:53 pm Sale | 2022-12-30 | 13G | Mersana Therapeutics, Inc. MRSN | Wellington Management Group LLP | 0 0.000% | -200,683 (Position Closed) | Filing History |
| 2023-02-03 12:27 pm Purchase | 2022-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | STATE STREET CORP STT | 234,242 5.870% | 65,420 (+38.75%) | Filing History |
| 2023-01-31 1:58 pm Purchase | 2022-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | BlackRock Inc. BLK | 299,677 7.500% | 508 (+0.17%) | Filing History |
| 2023-01-19 4:06 pm Sale | 2022-12-31 | 13G | Mersana Therapeutics, Inc. MRSN | Millennium Management LLC | 146,541 3.700% | -2,687 (-1.80%) | Filing History |