There have been 50 recent insider transactions recorded for Mersana Therapeutics, Inc. (MRSN), including 9 buys and 40 sells. Total insider buying was valued at $173.31K and total insider selling at $76.79K.
Notable insiders with recent activity include Mott David M, Hege Kristen, Dere Willard H. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — MRSN
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2025-06-12 |
Mott David M |
Director |
RSU Award |
61,500 |
$0.36 |
$22.14K |
61,500 |
| 2025-06-12 |
Hege Kristen |
Director |
RSU Award |
61,500 |
$0.36 |
$22.14K |
61,500 |
| 2025-06-12 |
Dere Willard H |
Director |
RSU Award |
61,500 |
$0.36 |
$22.14K |
61,500 |
| 2025-06-12 |
Protopapas Anna |
Director |
RSU Award |
61,500 |
$0.36 |
$22.14K |
61,500 |
| 2025-06-12 |
Alleva Lawrence M |
Director |
RSU Award |
61,500 |
$0.36 |
$22.14K |
61,500 |
| 2025-06-12 |
Hack Andrew A. F. |
Director |
RSU Award |
61,500 |
$0.36 |
$22.14K |
61,500 |
| 2025-06-12 |
Diaz Allene M. |
Director |
RSU Award |
61,500 |
$0.36 |
$22.14K |
61,500 |
| 2025-01-16 |
Protopapas Anna |
Director |
Informative Sell |
8,637 |
$0.58 |
$5.01K |
168,041 |
| 2025-01-16 |
Carvajal Alejandra |
SVP, Chief Legal Officer |
Informative Sell |
5,096 |
$0.58 |
$2.96K |
78,296 |
| 2025-01-16 |
Huber Martin H. Jr. |
President, CEO |
Informative Sell |
4,514 |
$0.58 |
$2.62K |
122,875 |
| 2025-01-16 |
Lowinger Timothy B |
SVP, Chief Sci.&tech. Officer |
Informative Sell |
8,048 |
$0.58 |
$4.67K |
257,673 |
| 2025-01-16 |
Deschuytner Brian |
SVP, COO & CFO |
Informative Sell |
8,470 |
$0.58 |
$4.91K |
121,393 |
| 2025-01-16 |
Mandelia Ashish |
VP, Chief Accounting Officer |
Informative Sell |
3,554 |
$0.58 |
$2.06K |
57,519 |
| 2025-01-16 |
Bala Mohan |
SVP, Chief Development Officer |
Informative Sell |
5,939 |
$0.58 |
$3.44K |
68,872 |
| 2025-01-15 |
Protopapas Anna |
Director |
Informative Sell |
6,191 |
$0.63 |
$3.9K |
155,428 |
| 2025-01-15 |
Carvajal Alejandra |
SVP, Chief Legal Officer |
Informative Sell |
952 |
$0.63 |
$599.76 |
70,892 |
| 2025-01-15 |
Lowinger Timothy B |
SVP, Chief Sci.&tech. Officer |
Informative Sell |
1,794 |
$0.63 |
$1.13K |
245,930 |
| 2025-01-15 |
Deschuytner Brian |
SVP, COO & CFO |
Informative Sell |
2,331 |
$0.63 |
$1.47K |
109,030 |
| 2025-01-15 |
Mandelia Ashish |
VP, Chief Accounting Officer |
Informative Sell |
1,791 |
$0.63 |
$1.13K |
52,388 |
| 2025-01-15 |
Protopapas Anna |
Director |
Option Exercise (Sell) |
21,250 |
- |
- |
- |
| 2025-01-15 |
Carvajal Alejandra |
SVP, Chief Legal Officer |
Option Exercise (Sell) |
12,500 |
- |
- |
37,500 |
| 2025-01-15 |
Huber Martin H. Jr. |
President, CEO |
Option Exercise (Sell) |
11,062 |
- |
- |
33,188 |
| 2025-01-15 |
Lowinger Timothy B |
SVP, Chief Sci.&tech. Officer |
Option Exercise (Sell) |
7,291 |
- |
- |
- |
| 2025-01-15 |
Deschuytner Brian |
SVP, COO & CFO |
Option Exercise (Sell) |
6,250 |
- |
- |
- |
| 2025-01-15 |
Mandelia Ashish |
VP, Chief Accounting Officer |
Option Exercise (Sell) |
4,519 |
- |
- |
- |
| 2025-01-15 |
Bala Mohan |
SVP, Chief Development Officer |
Option Exercise (Sell) |
14,583 |
- |
- |
43,750 |
| 2025-01-14 |
Protopapas Anna |
Director |
Informative Sell |
11,534 |
$0.66 |
$7.61K |
144,869 |
| 2025-01-14 |
Carvajal Alejandra |
SVP, Chief Legal Officer |
Informative Sell |
3,330 |
$0.66 |
$2.2K |
69,344 |
| 2025-01-14 |
Lowinger Timothy B |
SVP, Chief Sci.&tech. Officer |
Informative Sell |
3,483 |
$0.66 |
$2.3K |
242,932 |
| 2025-01-14 |
Deschuytner Brian |
SVP, COO & CFO |
Informative Sell |
3,713 |
$0.66 |
$2.45K |
105,111 |
| 2025-01-14 |
Mandelia Ashish |
VP, Chief Accounting Officer |
Informative Sell |
1,007 |
$0.66 |
$664.62 |
49,396 |
| 2025-01-14 |
Bala Mohan |
SVP, Chief Development Officer |
Informative Sell |
3,253 |
$0.66 |
$2.15K |
60,228 |
| 2025-01-14 |
Protopapas Anna |
Director |
Option Exercise (Sell) |
16,750 |
- |
- |
16,750 |
| 2025-01-14 |
Carvajal Alejandra |
SVP, Chief Legal Officer |
Option Exercise (Sell) |
2,500 |
- |
- |
2,500 |
| 2025-01-14 |
Lowinger Timothy B |
SVP, Chief Sci.&tech. Officer |
Option Exercise (Sell) |
4,792 |
- |
- |
4,791 |
| 2025-01-14 |
Deschuytner Brian |
SVP, COO & CFO |
Option Exercise (Sell) |
6,250 |
- |
- |
6,250 |
| 2025-01-14 |
Mandelia Ashish |
VP, Chief Accounting Officer |
Option Exercise (Sell) |
4,783 |
- |
- |
4,783 |
| 2025-01-13 |
Protopapas Anna |
Director |
Option Exercise (Sell) |
31,250 |
- |
- |
62,500 |
| 2025-01-13 |
Carvajal Alejandra |
SVP, Chief Legal Officer |
Option Exercise (Sell) |
8,958 |
- |
- |
17,917 |
| 2025-01-13 |
Lowinger Timothy B |
SVP, Chief Sci.&tech. Officer |
Option Exercise (Sell) |
9,375 |
- |
- |
18,750 |
| 2025-01-13 |
Deschuytner Brian |
SVP, COO & CFO |
Option Exercise (Sell) |
10,000 |
- |
- |
20,000 |
| 2025-01-13 |
Mandelia Ashish |
VP, Chief Accounting Officer |
Option Exercise (Sell) |
2,646 |
- |
- |
5,292 |
| 2025-01-13 |
Bala Mohan |
SVP, Chief Development Officer |
Option Exercise (Sell) |
8,750 |
- |
- |
17,500 |
| 2025-01-02 |
Alleva Lawrence M |
Director |
RSU Award |
12,521 |
$1.40 |
$17.53K |
12,521 |
| 2024-12-20 |
Nextech Crossover I Scsp |
10 Percent Owner |
Unknown |
- |
- |
- |
12,067,246 |
| 2024-12-19 |
Ecor1 Capital, Llc |
10 Percent Owner |
Other (Buy) |
8,036,688 |
$0.00 |
$803.67 |
8,036,688 |
| 2024-10-28 |
Bala Mohan |
SVP, Chief Development Officer |
Informative Sell |
1,884 |
$1.90 |
$3.58K |
54,731 |
| 2024-10-25 |
Bala Mohan |
SVP, Chief Development Officer |
Option Exercise (Sell) |
6,250 |
- |
- |
6,250 |
| 2024-10-03 |
Carvajal Alejandra |
SVP, Chief Legal Officer |
Informative Sell |
5,598 |
$1.96 |
$10.97K |
63,716 |
| 2024-10-03 |
Lowinger Timothy B |
SVP, Chief Sci.&tech. Officer |
Informative Sell |
5,598 |
$1.96 |
$10.97K |
235,642 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
