Alejandra Carvajal - Jan 14, 2022 Form 4 Insider Report for Mersana Therapeutics, Inc. (MRSN)

Role
Chief Legal Officer
Signature
/s/ Brian DeSchuytner, as Attorney-in-Fact
Stock symbol
MRSN
Transactions as of
Jan 14, 2022
Transactions value $
$0
Form type
4
Date filed
1/19/2022, 04:43 PM
Next filing
Apr 28, 2022

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MRSN Stock Option (right to buy) Award $0 +45K $0.00 45K Jan 14, 2022 Common Stock 45K $6.28 Direct F1
transaction MRSN Restricted Stock Units Award $0 +10K $0.00 10K Jan 14, 2022 Common Stock 10K Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The option vests in equal quarterly installments over the first four years after the vesting commencement date, January 14, 2022.
F2 Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock upon vesting.
F3 The restricted stock units vest in equal annual installments over the first four years after the vesting commencement date, January 14, 2022.