Mersana Therapeutics, Inc. (MRSN) Insider Trading -- Recent Executive & Director Transactions

13 insiders reported 22 Form 4 transactions for Mersana Therapeutics, Inc. (MRSN) over the past 18 months (most recent 2026-01-06). Recent activity: Protopapas Anna (Director) Sell 6,721 shares, Protopapas Anna (Director) Sell 2,890 shares, Protopapas Anna (Director) Sell 9,609 shares, Mandelia Ashish (VP, Chief Accounting Officer) Sell 2,300 shares, Hege Kristen (Director) Sell 578 shares. Source: SEC Form 4.

DateInsiderTitleTypeSharesValue
2026-01-06Protopapas AnnaDirectorSell6,721$0
2026-01-06Protopapas AnnaDirectorSell2,890$0
2026-01-06Protopapas AnnaDirectorSell9,609$0
2026-01-06Mandelia AshishVP, Chief Accounting OfficerSell2,300$0
2026-01-06Hege KristenDirectorSell578$0
2026-01-06MOTT DAVID MDirectorSell23,546$0
2026-01-06MOTT DAVID MDirectorSell383$0
2026-01-06Huber Martin H. Jr.President, CEOSell9,573$0
2026-01-06Hack Andrew A. F.DirectorSell578$0
2026-01-06Hack Andrew A. F.DirectorSell346,545$0
2026-01-06Carvajal AlejandraSVP, Chief Legal OfficerSell3,131$0
2026-01-06Lowinger Timothy BSVP, Chief Sci.&Tech. OfficerSell10,466$0
2026-01-06Bala MohanSVP, Chief DevelopmentSell2,927$0
2026-01-06Dere Willard HDirectorSell1,567$0
2026-01-06Diaz Allene M.DirectorSell578$0
2026-01-06DeSchuytner BrianSVP, COO & CFOSell5,015$0
2026-01-06Alleva Lawrence MDirectorSell578$0
2026-01-06Alleva Lawrence MDirectorSell84$0
2025-10-28Bala MohanSVP, Chief Development OfficerBuy250$0
2025-10-28Bala MohanSVP, Chief Development OfficerSell77$762
2025-09-15Huber Martin H. Jr.President, CEOBuy6,670$0
2025-09-15Huber Martin H. Jr.President, CEOSell2,012$14,708

Source: SEC Form 4 filings · as of 2026-01-06