MERSANA THERAPEUTICS INC (MRSN) Stock Ownership and Short Interest
USA - NASDAQ:MRSN - US59045L2051 - Common Stock
9.88 USD
-0.65 (-6.22%)
| Shares Outstanding | 4.99M |
| Float | 4.91M |
| Float Short Interest Percentage | 8.69% |
| Owners (insider) | 1.61% |
| Owners (institutional) | 61.93% |
| Owners (insider) change | 0.01% |
| Owners (institutional) change | -1.07% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Sep 12, 2025 | Huber Martin H. Jr. | Open Market Sale | 2012 | 7.31 | $ 14,707.72 |
| Sep 11, 2025 | Huber Martin H. Jr. | Option Excercise | 6670 | 0.00 | $ 0.00 |
| Jan 16, 2025 | Huber Martin H. Jr. | Open Market Sale | 4514 | 0.58 | $ 2,618.12 |
| Jan 16, 2025 | DeSchuytner Brian | Open Market Sale | 8470 | 0.58 | $ 4,912.60 |
| Jan 16, 2025 | Carvajal Alejandra | Open Market Sale | 5096 | 0.58 | $ 2,955.68 |
| Jan 16, 2025 | Bala Mohan | Open Market Sale | 5939 | 0.58 | $ 3,444.62 |
| Jan 16, 2025 | Mandelia Ashish | Open Market Sale | 3554 | 0.58 | $ 2,061.32 |
| Jan 16, 2025 | Protopapas Anna | Open Market Sale | 8637 | 0.58 | $ 5,009.46 |
| Jan 16, 2025 | Lowinger Timothy B | Open Market Sale | 8048 | 0.58 | $ 4,667.84 |
| Jan 15, 2025 | Protopapas Anna | Open Market Sale | 6191 | 0.63 | $ 3,900.33 |
| Jan 15, 2025 | Mandelia Ashish | Open Market Sale | 1791 | 0.63 | $ 1,128.33 |
| Jan 15, 2025 | Lowinger Timothy B | Open Market Sale | 1794 | 0.63 | $ 1,130.22 |
| Jan 15, 2025 | DeSchuytner Brian | Open Market Sale | 2331 | 0.63 | $ 1,468.53 |
| Jan 15, 2025 | Carvajal Alejandra | Open Market Sale | 952 | 0.63 | $ 599.76 |
| Jan 15, 2025 | Huber Martin H. Jr. | Option Excercise | 11062 | 0.00 | $ 0.00 |
| Jan 15, 2025 | DeSchuytner Brian | Option Excercise | 20833 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Carvajal Alejandra | Option Excercise | 12500 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Bala Mohan | Option Excercise | 14583 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Mandelia Ashish | Option Excercise | 8685 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Protopapas Anna | Option Excercise | 21250 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Lowinger Timothy B | Option Excercise | 19791 | 0.00 | $ 0.00 |
| Jan 14, 2025 | Carvajal Alejandra | Open Market Sale | 3330 | 0.66 | $ 2,197.80 |
| Jan 14, 2025 | Bala Mohan | Open Market Sale | 3253 | 0.66 | $ 2,146.98 |
| Jan 14, 2025 | Protopapas Anna | Option Excercise | 16750 | 0.00 | $ 0.00 |
| Jan 14, 2025 | Mandelia Ashish | Option Excercise | 4783 | 0.00 | $ 0.00 |
| Jan 14, 2025 | Lowinger Timothy B | Option Excercise | 4792 | 0.00 | $ 0.00 |
| Jan 14, 2025 | DeSchuytner Brian | Option Excercise | 6250 | 0.00 | $ 0.00 |
| Jan 14, 2025 | Carvajal Alejandra | Option Excercise | 2500 | 0.00 | $ 0.00 |
| Jan 14, 2025 | Protopapas Anna | Open Market Sale | 11534 | 0.66 | $ 7,612.44 |
| Jan 14, 2025 | Mandelia Ashish | Open Market Sale | 1007 | 0.66 | $ 664.62 |
| Jan 14, 2025 | Lowinger Timothy B | Open Market Sale | 3483 | 0.66 | $ 2,298.78 |
| Jan 14, 2025 | DeSchuytner Brian | Open Market Sale | 3713 | 0.66 | $ 2,450.58 |
| Jan 13, 2025 | Protopapas Anna | Option Excercise | 31250 | 0.00 | $ 0.00 |
| Jan 13, 2025 | Mandelia Ashish | Option Excercise | 2646 | 0.00 | $ 0.00 |
| Jan 13, 2025 | Lowinger Timothy B | Option Excercise | 9375 | 0.00 | $ 0.00 |
| Jan 13, 2025 | DeSchuytner Brian | Option Excercise | 10000 | 0.00 | $ 0.00 |
| Jan 13, 2025 | Carvajal Alejandra | Option Excercise | 8958 | 0.00 | $ 0.00 |
| Jan 13, 2025 | Bala Mohan | Option Excercise | 8750 | 0.00 | $ 0.00 |
| Dec 19, 2024 | EcoR1 Capital, LLC | Other Disposition | 8036688 | $ 0.00 | |
| Oct 28, 2024 | Bala Mohan | Open Market Sale | 1884 | 1.90 | $ 3,579.60 |
| Oct 25, 2024 | Bala Mohan | Option Excercise | 6250 | 0.00 | $ 0.00 |