The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Lowinger Timothy B since 2018.
This trader's CIK number is 1709775.
At the time of last reporting, Lowinger Timothy B was the SVP, Chief Sci.&Tech. Officer of Mersana Therapeutics, Inc.. (stock ticker symbol MRSN).
Also see all insider trading activities at Mersana Therapeutics, Inc..
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | MRSN | 0 | $0 | 13,325 | $8,095 | 33,958 | $0 |
| 2024 | MRSN | 0 | $0 | 24,096 | $55,358 | 79,375 | $0 |
| 2023 | MRSN | 0 | $0 | 6,233 | $35,777 | 20,001 | $0 |
| 2022 | MRSN | 0 | $0 | 4,741 | $28,066 | 15,209 | $0 |
| 2021 | MRSN | 0 | $0 | 53,531 | $856,329 | 150,770 | $277,865 |
| 2020 | MRSN | 0 | $0 | 37,020 | $776,212 | 50,460 | $208,657 |
| 2018 | MRSN | 0 | $0 | 10,500 | $125,440 | 22,911 | $86,163 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-01-15 | MRSN | Option Ex | 19,791 | .00 | 0 |
| 2025-01-16 | MRSN | Sale | 8,048 | .58 | 4,667 |
| 2025-01-14 | MRSN | Option Ex | 4,792 | .00 | 0 |
| 2025-01-15 | MRSN | Sale | 1,794 | .63 | 1,130 |
| 2025-01-13 | MRSN | Option Ex | 9,375 | .00 | 0 |
| 2025-01-14 | MRSN | Sale | 3,483 | .66 | 2,298 |
| 2024-10-01 | MRSN | Option Ex | 50,000 | .00 | 0 |
| 2024-10-03 | MRSN | Sale | 5,598 | 1.96 | 10,972 |
| 2024-10-02 | MRSN | Sale | 8,089 | 2.00 | 16,178 |
| 2024-01-16 | MRSN | Sale | 10,409 | 2.71 | 28,208 |
| 2024-01-13 | MRSN | Option Ex | 9,375 | .00 | 0 |
| 2024-01-14 | MRSN | Option Ex | 4,792 | .00 | 0 |
| 2024-01-15 | MRSN | Option Ex | 15,208 | .00 | 0 |
| 2023-01-17 | MRSN | Sale | 6,233 | 5.74 | 35,777 |
| 2023-01-15 | MRSN | Option Ex | 15,209 | .00 | 0 |
| 2023-01-14 | MRSN | Option Ex | 4,792 | .00 | 0 |
| 2022-01-14 | MRSN | Option Ex | 15,209 | .00 | 0 |
| 2022-01-18 | MRSN | Sale | 4,741 | 5.92 | 28,066 |
| 2021-12-20 | MRSN | Option Ex | 45,593 | 1.40 | 63,830 |
| 2021-08-20 | MRSN | Option Ex | 2,216 | 6.16 | 13,650 |
| 2021-08-20 | MRSN | Sale | 2,216 | 11.01 | 24,398 |
| 2021-07-20 | MRSN | Option Ex | 2,227 | 6.16 | 13,718 |
| 2021-07-20 | MRSN | Sale | 2,227 | 12.11 | 26,968 |
| 2021-07-15 | MRSN | Option Ex | 40,000 | .00 | 0 |
| 2021-07-16 | MRSN | Sale | 7,775 | 12.47 | 96,954 |
| 2021-07-19 | MRSN | Sale | 8,496 | 12.02 | 102,121 |
| 2021-07-08 | MRSN | Option Ex | 20,000 | 1.40 | 28,000 |
| 2021-07-01 | MRSN | Option Ex | 1,886 | 4.83 | 9,118 |
| 2021-07-01 | MRSN | Sale | 1,886 | 13.60 | 25,649 |
| 2021-06-21 | MRSN | Option Ex | 2,220 | 4.83 | 10,733 |
| 2021-06-21 | MRSN | Sale | 2,220 | 13.78 | 30,591 |
| 2021-04-20 | MRSN | Option Ex | 4,102 | 4.83 | 19,833 |
| 2021-04-20 | MRSN | Sale | 4,102 | 15.91 | 65,262 |
| 2021-03-22 | MRSN | Sale | 8,203 | 17.50 | 143,552 |
| 2021-03-22 | MRSN | Option Ex | 8,203 | 4.83 | 39,661 |
| 2021-02-22 | MRSN | Option Ex | 8,203 | 4.83 | 39,661 |
| 2021-02-22 | MRSN | Sale | 8,203 | 20.01 | 164,142 |
| 2021-01-20 | MRSN | Sale | 8,203 | 21.54 | 176,692 |
| 2021-01-20 | MRSN | Option Ex | 8,203 | 4.83 | 39,661 |
| 2021-01-15 | MRSN | Option Ex | 7,917 | .00 | 0 |
| 2020-12-28 | [MRSN] | Option Ex | 9,000 | 1.40 | 12,600 |
| 2020-12-21 | MRSN | Sale | 8,203 | 25.59 | 209,955 |
| 2020-12-21 | MRSN | Option Ex | 8,203 | 4.83 | 39,661 |
| 2020-10-20 | MRSN | Option Ex | 20,953 | 4.62 | 96,907 |
| 2020-10-21 | MRSN | Option Ex | 4,101 | 4.83 | 19,828 |
| 2020-10-20 | MRSN | Sale | 4,102 | 16.74 | 68,667 |
| 2020-10-21 | MRSN | Sale | 4,101 | 17.50 | 71,767 |
| 2020-09-21 | MRSN | Option Ex | 8,203 | 4.83 | 39,661 |
| 2020-09-21 | MRSN | Sale | 20,614 | 20.66 | 425,823 |
| 2018-09-24 | MRSN | Sale | 3,500 | 11.63 | 40,705 |
| 2018-09-24 | MRSN | Option Ex | 3,500 | 1.40 | 4,900 |
| 2018-08-27 | MRSN | Option Ex | 3,500 | 7.43 | 26,005 |
| 2018-08-27 | MRSN | Sale | 3,500 | 13.15 | 46,025 |
| 2018-07-23 | MRSN | Sale | 3,500 | 11.06 | 38,710 |
| 2018-07-03 | MRSN | Option Ex | 10,000 | 1.40 | 14,000 |
| 2018-02-21 | MRSN | Option Ex | 5,911 | 6.98 | 41,258 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Lowinger Timothy B (SVP, Chief Sci.&Tech. Officer of Mersana Therapeutics, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.