Insider Transactions last 24 months for Mersana Therapeutics, Inc. - NSDQ: MRSN
Transactions
All
Buy
Sell
Option Exercise
Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Huber Martin H. Jr. President, CEO 09/12/2025 DS Direct COM 2,012 $7.31 $14,707.72 9,572 Huber Martin H. Jr. President, CEO 09/11/2025 AM Direct COM 6,670 $0.00 $0.00 11,584 Bala Mohan SVP, Chief Development Officer 01/16/2025 DS Direct COM 5,939 $0.58 $3,444.62 68,872 Carvajal Alejandra SVP, Chief Legal Officer 01/16/2025 DS Direct COM 5,096 $0.58 $2,955.68 78,296 Deschuytner Brian SVP, COO & CFO 01/16/2025 DS Direct COM 8,470 $0.58 $4,912.60 121,393 Huber Martin H. Jr. President, CEO 01/16/2025 DS Direct COM 4,514 $0.58 $2,618.12 122,875 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/16/2025 DS Direct COM 8,048 $0.58 $4,667.84 257,673 Protopapas Anna Director 01/16/2025 DS Direct COM 8,637 $0.58 $5,009.46 168,041 Mandelia Ashish VP, Chief Accounting Officer 01/16/2025 DS Direct COM 3,554 $0.58 $2,061.32 57,519 Carvajal Alejandra SVP, Chief Legal Officer 01/15/2025 DS Direct COM 952 $0.63 $599.76 70,892 Deschuytner Brian SVP, COO & CFO 01/15/2025 DS Direct COM 2,331 $0.63 $1,468.53 109,030 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/15/2025 DS Direct COM 1,794 $0.63 $1,130.22 245,930 Mandelia Ashish VP, Chief Accounting Officer 01/15/2025 DS Direct COM 1,791 $0.63 $1,128.33 52,388 Protopapas Anna Director 01/15/2025 DS Direct COM 6,191 $0.63 $3,900.33 155,428 Bala Mohan SVP, Chief Development Officer 01/15/2025 AM Direct COM 14,583 $0.00 $0.00 74,811 Carvajal Alejandra SVP, Chief Legal Officer 01/15/2025 AM Direct COM 12,500 $0.00 $0.00 83,392 Deschuytner Brian SVP, COO & CFO 01/15/2025 AM Direct COM 14,583 $0.00 $0.00 129,863 Deschuytner Brian SVP, COO & CFO 01/15/2025 AM Direct COM 6,250 $0.00 $0.00 115,280 Huber Martin H. Jr. President, CEO 01/15/2025 AM Direct COM 11,062 $0.00 $0.00 127,389 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/15/2025 AM Direct COM 12,500 $0.00 $0.00 265,721 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/15/2025 AM Direct COM 7,291 $0.00 $0.00 253,221 Protopapas Anna Director 01/15/2025 AM Direct COM 21,250 $0.00 $0.00 176,678 Mandelia Ashish VP, Chief Accounting Officer 01/15/2025 AM Direct COM 4,166 $0.00 $0.00 61,073 Mandelia Ashish VP, Chief Accounting Officer 01/15/2025 AM Direct COM 4,519 $0.00 $0.00 56,907 Bala Mohan SVP, Chief Development Officer 01/14/2025 DS Direct COM 3,253 $0.66 $2,146.98 60,228
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Mott David M Director 10/02/2023 AA Direct COM 15,873 $0.00 $0.00 579,884 Dere Willard H Director 10/02/2023 AA Direct COM 11,011 $0.00 $0.00 33,070
1 You are at page 1 of 1 pages
Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Huber Martin H. Jr. President, CEO 09/12/2025 DS Direct COM 2,012 $7.31 $14,707.72 9,572 Bala Mohan SVP, Chief Development Officer 01/16/2025 DS Direct COM 5,939 $0.58 $3,444.62 68,872 Carvajal Alejandra SVP, Chief Legal Officer 01/16/2025 DS Direct COM 5,096 $0.58 $2,955.68 78,296 Deschuytner Brian SVP, COO & CFO 01/16/2025 DS Direct COM 8,470 $0.58 $4,912.60 121,393 Huber Martin H. Jr. President, CEO 01/16/2025 DS Direct COM 4,514 $0.58 $2,618.12 122,875 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/16/2025 DS Direct COM 8,048 $0.58 $4,667.84 257,673 Protopapas Anna Director 01/16/2025 DS Direct COM 8,637 $0.58 $5,009.46 168,041 Mandelia Ashish VP, Chief Accounting Officer 01/16/2025 DS Direct COM 3,554 $0.58 $2,061.32 57,519 Carvajal Alejandra SVP, Chief Legal Officer 01/15/2025 DS Direct COM 952 $0.63 $599.76 70,892 Deschuytner Brian SVP, COO & CFO 01/15/2025 DS Direct COM 2,331 $0.63 $1,468.53 109,030 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/15/2025 DS Direct COM 1,794 $0.63 $1,130.22 245,930 Mandelia Ashish VP, Chief Accounting Officer 01/15/2025 DS Direct COM 1,791 $0.63 $1,128.33 52,388 Protopapas Anna Director 01/15/2025 DS Direct COM 6,191 $0.63 $3,900.33 155,428 Bala Mohan SVP, Chief Development Officer 01/14/2025 DS Direct COM 3,253 $0.66 $2,146.98 60,228 Carvajal Alejandra SVP, Chief Legal Officer 01/14/2025 DS Direct COM 3,330 $0.66 $2,197.80 69,344 Deschuytner Brian SVP, COO & CFO 01/14/2025 DS Direct COM 3,713 $0.66 $2,450.58 105,111 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/14/2025 DS Direct COM 3,483 $0.66 $2,298.78 242,932 Mandelia Ashish VP, Chief Accounting Officer 01/14/2025 DS Direct COM 1,007 $0.66 $664.62 49,396 Protopapas Anna Director 01/14/2025 DS Direct COM 11,534 $0.66 $7,612.44 144,869 Ecor1 Capital, Llc Other 12/19/2024 DJ Indirect COM 8,036,688 $0.00 $0.00 11,328,000 Bala Mohan SVP, Chief Development Officer 10/28/2024 DS Direct COM 1,884 $1.90 $3,579.60 54,731 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 10/03/2024 DS Direct COM 5,598 $1.96 $10,972.08 235,642 Mandelia Ashish VP, Chief Accounting Officer 10/03/2024 DS Direct COM 3,361 $1.96 $6,587.56 47,757 Bala Mohan SVP, Chief Development Officer 10/03/2024 DS Direct COM 5,598 $1.96 $10,972.08 50,365 Carvajal Alejandra SVP, Chief Legal Officer 10/03/2024 DS Direct COM 5,598 $1.96 $10,972.08 63,716
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Huber Martin H. Jr. President, CEO 09/11/2025 AM Direct COM 6,670 $0.00 $0.00 11,584 Bala Mohan SVP, Chief Development Officer 01/15/2025 AM Direct COM 14,583 $0.00 $0.00 74,811 Carvajal Alejandra SVP, Chief Legal Officer 01/15/2025 AM Direct COM 12,500 $0.00 $0.00 83,392 Deschuytner Brian SVP, COO & CFO 01/15/2025 AM Direct COM 14,583 $0.00 $0.00 129,863 Deschuytner Brian SVP, COO & CFO 01/15/2025 AM Direct COM 6,250 $0.00 $0.00 115,280 Huber Martin H. Jr. President, CEO 01/15/2025 AM Direct COM 11,062 $0.00 $0.00 127,389 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/15/2025 AM Direct COM 12,500 $0.00 $0.00 265,721 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/15/2025 AM Direct COM 7,291 $0.00 $0.00 253,221 Protopapas Anna Director 01/15/2025 AM Direct COM 21,250 $0.00 $0.00 176,678 Mandelia Ashish VP, Chief Accounting Officer 01/15/2025 AM Direct COM 4,166 $0.00 $0.00 61,073 Mandelia Ashish VP, Chief Accounting Officer 01/15/2025 AM Direct COM 4,519 $0.00 $0.00 56,907 Carvajal Alejandra SVP, Chief Legal Officer 01/14/2025 AM Direct COM 2,500 $0.00 $0.00 71,844 Deschuytner Brian SVP, COO & CFO 01/14/2025 AM Direct COM 6,250 $0.00 $0.00 111,361 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/14/2025 AM Direct COM 4,792 $0.00 $0.00 247,724 Mandelia Ashish VP, Chief Accounting Officer 01/14/2025 AM Direct COM 4,783 $0.00 $0.00 54,179 Protopapas Anna Director 01/14/2025 AM Direct COM 16,750 $0.00 $0.00 161,619 Bala Mohan SVP, Chief Development Officer 01/13/2025 AM Direct COM 8,750 $0.00 $0.00 63,481 Carvajal Alejandra SVP, Chief Legal Officer 01/13/2025 AM Direct COM 8,958 $0.00 $0.00 72,674 Deschuytner Brian SVP, COO & CFO 01/13/2025 AM Direct COM 10,000 $0.00 $0.00 108,824 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 01/13/2025 AM Direct COM 9,375 $0.00 $0.00 246,415 Mandelia Ashish VP, Chief Accounting Officer 01/13/2025 AM Direct COM 2,646 $0.00 $0.00 50,403 Protopapas Anna Director 01/13/2025 AM Direct COM 31,250 $0.00 $0.00 156,403 Bala Mohan SVP, Chief Development Officer 10/25/2024 AM Direct COM 6,250 $0.00 $0.00 56,615 Lowinger Timothy B SVP, Chief Sci.&Tech. Officer 10/01/2024 AM Direct COM 50,000 $0.00 $0.00 249,329 Mandelia Ashish VP, Chief Accounting Officer 10/01/2024 AM Direct COM 30,000 $0.00 $0.00 55,973
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Transaction Type Key A = Acquired, D = Disposed A = Grant, award or other acquisition pursuant to Rule 16b-3(d)
C = Conversion of derivative security |
D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) |
E = Expiration of short derivative position |
F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. |
G = Gift |
H = Expiration (or cancellation) of long derivative position with value received |
I = Discretionary transaction in accordance with Rule 16b-3(f) |
J = Other |
L = Small acquisition under Rule 16a-6 |
M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 |
O = Exercise of out-of-the-money derivative security |
P = Open market or private purchase |
S = Open market or private sale |
U = Disposition pursuant to a tender of shares in a change of control transaction |
W = Acquisition or disposition by will or the laws of descent and distribution |
X = Exercise of in-the-money or at-the-money derivative security |
Z = Deposit into or withdrawal from voting trust
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