0001104659-21-107356.txt : 20210818 0001104659-21-107356.hdr.sgml : 20210818 20210818163206 ACCESSION NUMBER: 0001104659-21-107356 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210816 FILED AS OF DATE: 20210818 DATE AS OF CHANGE: 20210818 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: MISRA TUSHAR CENTRAL INDEX KEY: 0001877233 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 211187032 MAIL ADDRESS: STREET 1: 840 MEMORIAL DRIVE CITY: CAMBRIDGE STATE: MA ZIP: 02139 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Mersana Therapeutics, Inc. CENTRAL INDEX KEY: 0001442836 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 840 MEMORIAL DRIVE CITY: CAMBRIDGE STATE: MA ZIP: 02139 BUSINESS PHONE: 617-498-0020 MAIL ADDRESS: STREET 1: 840 MEMORIAL DRIVE CITY: CAMBRIDGE STATE: MA ZIP: 02139 FORMER COMPANY: FORMER CONFORMED NAME: MERSANA THERAPEUTICS INC DATE OF NAME CHANGE: 20080813 4 1 tm2125411-2_4seq1.xml OWNERSHIP DOCUMENT X0306 4 2021-08-16 0 0001442836 Mersana Therapeutics, Inc. MRSN 0001877233 MISRA TUSHAR C/O MERSANA THERAPEUTICS, INC. 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 0 1 0 0 Chief Manufacturing Officer Stock Option (right to buy) 11.56 2021-08-16 4 A 0 112500 0 A 2031-08-15 Common Stock 112500 112500 D Restricted stock unit 2021-08-16 4 A 0 25000 0 A Common Stock 25000 25000 D The options will vest as to 25% of the shares on the first anniversary of the grant date and in equal quarterly installments over the next three years. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting. The restricted stock units will vest in equal annual installments over the first four years after the vesting commencement date, August 16, 2021. Brian DeSchuytner, as Attorney-in-Fact 2021-08-18